Hastelloy Button Head Cap Screws

A high performace nickel alloy used for severe corrosion environments

• Excellent corrosion resistance to reducing and oxidizing environments
• Well suited for hydrochloric and sulfuric acid environments
• Strong resistance to stress corrosion cracking
• Excellent mechanical properties at elevated temperatures
• Alloy grades: C276, B2, B3, C22, Hastelloy X
• Hastelloy button head cap screw features and benefits

Hastelloy® button head cap screws are in stock and available now - such as Hastelloy C276, which is generally considered a versatile and highly corrosion resistant alloy. Hastelloy screws have excellent corrosion resistance in both oxidizing and reducing media which makes it well suited for a variety of strong corrosive applications. Hastelloy button head screws also have exceptional resistance to both sulfuric acid and hydrochloric acid.

Because Hastelloy screws resist some of the most severe media, Hastelloy button head cap screws are often utilized in chemical processing applications where acid chlorides, solvents, formic and acetic acids, acetic anhydride, wet chlorine gas, hypochlorites, chlorine solutions and phosphoric acid are used. For chemical processing applications, Hastelloy C276 is the most common grade and one of the most corrosion resistant nickel alloys - exceeding that of most other nickel alloy grades like Inconel or Monel. More indepth material information can be found by downloading our Hastelloy C276 datasheet.

Resources: Hastelloy Torque Spec

Screw Types: 12 Point Screws, Button Head Cap Screws, Flat Head Screws, Hex Cap Screws, Pan Head Screws, Set Screws, Socket Head Cap Screws, Tamper Resistant Security Screws, Torx Screws

Hastelloy Button Head Cap Screw Features and Benefits

Hastelloy button head cap screws combine the similar shape of a pan head with the driver of a socket head. The socket driver is ideal for low clearance applications that require a large area clamping face. Compared to a standard socket head cap screw, Hastelloy button heads have a lower and wider profile. This can be useful when the clamping material is too thin to counter-bore.

Advantages

• Wide bearing surface for clamping
• Low profile head

Common Hastelloy Bolt Grades

Confused about which grade of Hastelloy bolts are best for your corrosive application? Read this short blog post which gives an overview of each grade's strength. If you need more indepth direction, visit our Hastelloy grade pages or contact our engineering team.

HASTELLOY C276

Hastelloy C276 alloy, UNS N10276, is the most widely used and versatile, corrosion resistant alloy. Very good resistance to reducing, and mildly oxidizing corrosives. Excellent stress corrosion cracking resistance with very good resistance to localized attack. For more indepth material information download our Hastelloy C276 datasheet.

Hastelloy C276 Specifications: N10276, ASTM B574, ASME SB574, Werkstoff 2.4819, ASTM G28-A/B, EN 10204-3.1, ASME B18.2.2, ASTM B619, ASME SB619, ASTM B366, ASME SB366, WPHC276, ASME B16.11, ASTM B564/ASME SB564, COLD DRAWN, HOT FINISHED, ASTM B575, ASME SB575, COLD ROLLED, HOT ROLLED, ASME B16.9, ASME B16.5, ASTM B462, ASME SB462

HASTELLOY B2

Hastelloy B3 alloy, UNS N10665, resistance to hydrochloric acid and other strongly reducing chemicals but has poor corrosion resistance to oxidizing chemicals and in the presence of ferric or cupric salts. In addition, Hastelloy B2 has excellent resistance to pitting and stress corrosion cracking. However B2 has little chromium, and it should NOT be used with oxidizing media in the presence of salts. Select the following links for more details about Hastelloy B2 Bolts,  Screws, and Flanges.

Hastelloy B2 Specifications: N10665, ASTM B619, Werkstoff 2.4617, ASME SB619, ANNEALED, B/SB619 CLASS I OR II, X-RAY PER ASME SECTION VIII DIVISION 1 UW-51, MERCURY FREE, EN 10204-3.1, ASTM B366, ASME SB366, WPHB2-S, ASME B16.11, ASTM B335, ASME SB335, ASME B16.3, MSS SP-83, ASTM B564/ASME SB564, COLD DRAWN, HOT FINISHED, ASTM B333, ASME SB333, SHEET IS COLD ROLLED, HOT ROLLED, ENIMO-7, AWS A-5.11, ASME SFA-5.11

HASTELLOY B3

Hastelloy B3 alloy, UNS N10675, is specifically designed to deal with very aggressive hydrochloric acid (HCl), hyrdrobromic acid (HBr) and sulfuric acids (H2SO4) as well as acetic, formic and phosphoric acids. Additionally Hastelloy B3 has improved structural integrity over B2. However B3 has little chromium, and it should NOT be used with oxidizing media in the presence of salts. Select the following links for more details about Hastelloy B3 Bolts,  Screws, and Flanges.

Hastelloy B3 Specifications: N10675, ASTM B366, ASME SB366, Werkstoff 2.4600, WPHB3-W, ASME B16.9, ANNEALED, MERCURY FREE, EN 10204-3.1 (W/O X-RAY), ASTM B335, ASME SB335, ASTM B564, ASME SB564, DIMENSIONS PER ASME B16.5, ASTM B462, ASME SB462, ASME B16.5, COLD DRAWN, HOT FINISHED, ASTM B626, ASME SB626, B/SB626 CLASS III, ASTM B333, ASME SB333, COLD ROLLED, HOT ROLLED

HASTELLOY C22

Hastelloy C22 alloy, UNS N06022, has better overall corrosion resistance in oxidizing corrosives than C-276 and Inconel 625 alloys due to the higher chromium content. Outstanding resistance to localized corrosion and excellent resistance to stress corrosion cracking. This alloy has limited availability and can be made into fastener in larger diameters only (1/2" and greater in size). Select the following links for more details about Hastelloy C22 Bolts,  Screws, and Flanges.

Hastelloy C22 Specifications: SB 575/B 575, SB 574/B 574, SB 366/B 366 SB 462/B 462, SB 564/B 564 SB 462/B 462, Werkstoff 2.4602, 17744 No. 2.4602 NiCr21Mo14W, NACE MR0175 ISO 15156

HASTELLOY C2000

Hastelloy C2000 alloy, UNS N06200, is a corrosion resistant alloy with excellent resistance to uniform corrosion in oxidizing or re-ducing environments. Due to the addition of copper and the high content of chromium, it has enhanced corrosion resistance to sulfuric acid and process streams contaminated with ferric ions. In addition it has excellent resistance to stress corrosion cracking and superior resistance to localized corrosion as compared to C-276 alloy.

Hastelloy C2000 Specifications: SB 575/B 575, SB 574/B 574, SB 366/B 366 SB 462/B 462,SB 564/B 564 SB 462/B 462, Werkstoff 2.4675, NACE MR0175 ISO 15156

HASTELLOY X 

Alloy X, UNS N06002, is most known for its exceptional combination of high temperature oxidation resistance up to 2000°C and high temperature strength. Being stable, strong and ductile at high temperatures are its most notable characteristics which is often utilized in gas turbine components and furnace components.

Hastelloy X Specifications: AMS 5536, AMS 5754, AMS 5798, ASME SB 435, ASME SB 572, ASME Sect. IX P No. 43, ASME Section IX P No. 43, ASME SFA 5.14, ASTM B 435, ASTM B 572, EN 2.4665, GE B50A436, GE B50T83, GE B50TF24, PDS 1038 (X-low), PDS 15102QFC, UNS N06002, Werkstoff 2.4665

MECHANICAL PROPERTIES OF HASTELLOY

Hastelloy Corrosion Data

Hastelloy C276 Iso-Corrosion Curves for HCl & H₂SO₄

Nickel 200 Fasteners - Bolts, Screws & Nuts

Ideal for caustic alkali corrosive solutions

• Excellent corrosion resistance to caustic soda
• Moderate general corrosion resistance
• Chemistry, specifications & Mechanical Data
• Nickel 200 fastener styles
• Availability of Nickel 200 fasteners
• Nickel 200 datasheet

Nickel 200 (2.4060) fasteners are made from commercially pure nickel and are best known for their excellent performance in caustic alkali solutions such as caustic soda (NaOH). Nickel 200 also exhibits good performance in acids, especially HF (Hydrofluoric Acid - anhydrous) and hydroxides – but can be attacked by common solutions of hydrochloric or sulfuric acids.

From a mechanical perspective, Nickel 200 bolts have good ductility and low hardness, so they are tough, but not particularly strong (60-85 KSI UTS). See Tensile, Yield & Elongation Chart.

Corrosion
Nickel 200 screws are resistant to corrosive environments, most notably reducing chemicals. They offer outstanding protection to caustic alkaline solutions. However, Nickel 200 fasteners will be severely attacked in oxidizing salt solutions.
 
Chemical Resistance
•  Sodium Hydroxide (NaOH): Excellent resistance to all concentrations of caustic soda.
•  Alkalis: Excellent resistance except for ammonium hydroxide.
•  Sulfuric acid: Moderate resistance to nonaerated sulfuric acid solutions near room temperature.
•  Hydrochloric: Limited resistance in specific environments only.
•  Hydrofluoric: Good resistance to anhydrous hydrofluoric acid even at high temperatures. Nickel 200 it has limited resistance to aqueous HF solutions.
•  Important: Oxidizing acid chlorides such as ferric, cupric and mercuric are very corrosive to Nickel 200 fasteners.

General
•  60-85 KSI UTS
•  15-45 KSI Yield
•  Typically used in application temperatures less than 600⁰F / 315⁰C

Applications
•  Most often used in chemical and electronic processing, especially applications that deal with caustic soda.
•  High electrical and thermal conductivity, as well as magnetostrictive properties make Nickel 200 screws useful in electrics and sonic devices.
•  Nickel 200 bolts are used in salt production and applications that use sodium hydroxide and fluorine.

Nickel 200 Fastener Availability

Availability
Nickel 200 is available in a wide variety of screw styles. The minimum order quantity is typically around 20 pieces with the normal lead time being about 3 weeks, depending on the complexity of custom requests.  So be sure to contact us for specific lead times and any expediting needs.

• Diameter sizes:  Standard #00 – 4” in diameter / Metric M1.2 – M48
• Threads: UNC, UNF, UNJ, UNR, Rolled,Cut
• Custom to print available.
• NACE MR0175, ASTM, ASME, MIL specifications, DFAR and Domestic available

Expediting Options
We understand you may have critical needs that require expedited lead times. Please let us know when requesting a quote so we can do our best to help.

Nickel 200 Fastener Styles

Nickel 200 Chemistry and Specifications

NICKEL 200 SPECIFICATIONS: UNS N02200, EN 2.4060, EN 2.40666

Nickel 200 Aqueous Corrosion Data

Nickel 200 Temperature vs. Strength

Nickel 200 Screws  

12 Point Screws	Nickel 12 point screws are an ideal choice when higher torque  than a socket head cap screw is needed. The only drawback is they are be less economical due to the complex head design. Available in 1/4" or larger sizes.	•  IFI-115 •  MIL SPEC •  DIN 34822 •  DIN 34821
Button Head Cap Screws	Offering a wide clamping area and low profile, Nickel 200 button head screws are best suited for fastening a material that is too thin to counter bore.	• ASME B18.3 • ASME 18.3.4M • DIN 7380 / ISO 7380
Flat Head Screws	Most commonly offered in an 82° countersink angle, Nickel 200 flat head screws but can be customized to other angles from 60° -120°. These screws are designed to be flush with the surface.  Nickel 200 flat heads are available in slotted and socket drivers. Phillips, torx and other tamperproof drivers can also be made upon request.	•  ASME B18.3 •  ASME B18.3.6 •  DIN 963 / ISO 2009 •  DIN 965 / ISO 7046 •  DIN 7991 / ISO 10642
Hex Head Cap Screws	Nickel 200 hex head cap screws feature an added washer face to the bolt head (lacking on a hex bolt) which provides tighter dimensional tolerances. Ideal for a high clamping force applications with ease of access. Generally availabe in #2 - 1/2" sizes and metric sizes.	• ASME B18.6.3 • DIN 931 / ISO 4014 • DIN 933 / ISO 4017 • DIN 961 / ISO 8676
Pan Head Screws	Nickel 200 pan head screws have a rounded head style and typically featured a slotted driver. They are best for small diameter fasteners and low torque applications.	• ASME B18.6.3 • DIN 7985 • DIN 921 • DIN 85 / ISO 1580 • DIN 84 / ISO 1207   (cheese head) • DIN 966 / ISO 7047   (raised counter sunk)
Security Screws	Nickel 200 security screws provide a solution to unwanted tampering or removal due to the fact that they cannot be removed using an ordinary driver. Nickel 200 security screws can be made in a wide variety of driver styles, as well as custom per print.
Set Screws	Nickel 200 set screws are a headless fastener with a slotted or socket driver on one end and a special point on the other. We offer Nickel 200 set screws in cup, cone, flat, dog and half-dog points.	• ASME B18.3 • DIN 913 / ISO 4026 • DIN 914 / ISO 4027 • DIN 915 / ISO 4028 • DIN 916 / ISO 4029
Socket Head Cap Screws	Nickel 200 socket head cap are a safe reliable fastening solution for applications with limited access and little clearance.	• ASME B18.3 • DIN 912 / ISO 4762 • DIN 7984
Vented Screws	Nickel 200 vented screws have a vertical hole drilled from the screw head through to the end of the threads. This allows gases and other contaminents to vent. Nickel 200 vented screws are ideal for vacuum / high vacuum applications. Nickel 200 vented screws are available in any head style.

Nickel 200 Bolts 

Hex Head Bolts	Nickel 200 hex bolts are similar to hex head cap screws, less the washer face under the head. They are ideal for high clamping force applications with ease access.	• ASME B18.2.1 • DIN 931 / ISO 4014 • DIN 933 / ISO 4017
Shoulder Bolts	Nickel 200 shoulder bolts are made up of a head, smooth shoulder section (for rotating parts) and threaded segment.  Nickel 200 shoulder bolts are commonly available with socket drivers.	• ASME • DIN 7379 / ISO 7379 • ISO 7370
Wedge Anchor Bolts	Nickel 200 wedge anchor bolts are a safe and secure way to attach equipment and other materials to concrete in corrosive environments.

Nickel 200 Nuts 

Hex Nuts	Nickel 200 hex nuts are available in finished hex nuts, jam nuts and heavy hex nuts.	• ASME B18.16.3 • ASME B18.2.2 • DIN 439 / ISO 4035 • DIN 934 / ISO 4032 • DIN 986
Lock Nuts	Nickel 200 lock nuts are availalbe in all-metal (stover, flexloc, etc.) and polymer (nylon) insert styles. All-metal lock nuts are idea for high temperatures and even load distribution. Nickel 200 nylon insert lock nuts are an economic choice for temperatures under than 350°F.	• ASME B18.16.3M • DIN 980 / ISO 7042 /     ISO 19513 • DIN 6923 / ISO 4161 • DIN 985 / ISO 10511 /   ISO 7040

Nickel 200 Studs & Threaded Rod 

Studs	Nickel 200 studs are fully-threaded or partially-threaded lengths of rod that are under 12" long. Available in any custom length.	• ASME B18.31.2 • DIN 976
Threaded Rod	Nickel 200 threaded rods are available in lengths greater than 1 foot. Minimum order quantity is a total of 6 feet of length. Maximum shipment length is 6 feet long.	• ASME B1.1 • DIN 975

Nickel 200 Washers 

Flat Washers	Nickel 200 washers are offered in SAE, USS, MilSpec, oversized, and custom sizes.	• ASME 18.21.1 • SAE / USS • DIN 125 / ISO 7089 /   ISO 7090 • DIN 126 / ISO 7091
Lock Washers	Nickel 200 lock washers are available as split lock washers.	• ASME B18.21.1 • DIN 127 / ISO 7090 • DIN 6796 /  ISO 10690

Hastelloy C276 Fasteners - Bolts, Screws & Nuts

A high performace nickel alloy used for severe corrosion environments

• Excellent corrosion resistance to sulfuric & hydrochloric acids
• Good mechanical properties at elevated temperatures
• C276, B2, B3, C22, Hastelloy X chemistry & specs
• Hastelloy fastener styles
• In stock availability and timing
• Hastelloy FAQ of the week
• Hastelloy C276 Datasheet

Hastelloy Fastener Overview

Hastelloy fasteners such as bolts, screw, nuts and threaded rods are ideally suited for a wide variety of medium to severe corrosive acid environments.  The most common grade for Hastelloy fasteners is Hastelloy C276 (2.4819), which is the one of the most versatile of the corrosion resistant nickel alloys – exceeding that of Inconel or Monel. Hastelloy fasteners are also available in other specialty grades that can address more niche corrosion issues. Hastelloy is often used for applications involving:

• Sulfuric and hydrochloric acid (H2SO4 & HCl)
• Sour gas
• Chlorides, wet chloride gas and chlorine solutions
• Solvents
• Formic and acetic acids
• Acetic anhydride
• Hypochlorites
• Phosphoric acid

Because Hastelloy fasteners are resistant to some of the most severe chemicals, this very material often finds use in oil & gas sour gas service, chemical processing, power industries flue gas desulfurization systems, off-shore oil and down hole environments, pulp & paper bleaching and digesters, as well as other industrial facets where corrosion is an issue.

If you not sure which material is best for your application our team of engineers have decades of materials expertise and industrial experience that can help assist you in selecting the best Hastelloy fastener for your application. Other resources include: Hastelloy Torque Spec, Flange Dimensions, Flange Bolting Chart, Material Selection Tool

Hastelloy Fastener Stock and Availability

Stock
Hastelloy C276 (2.4819) bolts, nuts, washers, lock washers and threaded rods are stocked and ready to ship in the following sizes:  ¼” – 1”

Custom Availability
Other sizes, Hastelloy grades and screw styles can be made to order with minimum quantities, typically around 10pcs. The normal lead time for standard Hastelloy is few days. For custom Hastelloy fasteners, it can vary but is usually not more than 4 weeks. So be sure to contact us for specific lead times and any expediting needs.

• Diameter sizes:  Standard #00 – 4” in diameter / Metric M1.2 – M48
• Threads: UNC, UNF, UNJ, UNR, Rolled,Cut
• Minimum Volume – Typically 10pcs, depending on size and stock
• Custom to print
• NACE MR0175, ASTM, ASME, MIL specifications, DFAR and Domestic available
• Nuts per ASTM 467
• Bolts, Hex Cap Screws, Socket Head Cap Screws, and Studs per ASTM 468
  

Expediting Options
Lead Time is important?  You have down equipment?  No problem.  Just let us know what you need and we will do our very best to accommodate.
 

Hastelloy Fastener Styles

Hastelloy Frequently Asked Question of the Week

Common Hastelloy Bolt Grades

Confused about which grade of Hastelloy bolts are best for your corrosive application? Read this short blog post which gives an overview of each grade's strength. If you need more in-depth direction or contact our engineering team for expert guidance.

HASTELLOY C276 (2.4819)
Hastelloy C276 alloy, UNS N10276, 2.4819, is the most widely used and versatile corrosion resistant nickel alloy. Hastelloy fasteners offer very good resistance to strong reducing and moderately oxidizing corrosive acids, as well excellent stress corrosion cracking resistance and resistance to localized attack. Outstanding corrosion resistance to various concentrated, hot acids and reducing environments, C276 fasteners are readily used in hot sulfuric and hydrochloric acid applications. Hastelloy's resistance to sulfuric acid makes it a common choice for protection from hydrogen sulfide (H2S), more commonly known as sour gas.In addition, Hastelloy C276 is one of the few grades resistant to wet chloride gas and chlorine dioxide. The Hastelloy C276 grade also offers excellent mechanical properties at elevated temperatures up to 1500°F / 815°C, making it ideal for hot corrosive environments. Because of these properties, Hastelloy C276 fasteners have resistance to a wide range of acids, chlorides, and strong halides which is why they are often utilized in the chemical processing and the oil & gas industries. The only factor that is critical to point out when dealing with very strong oxidizing environments like nitric acid is that Hastelloy C276 fasteners can be attacked as it has a low chromium content compared to other grades like Hastelloy C22. For more indepth material information, download our Hastelloy C276 Datasheet.

C276 Corrison Data & Iso-Corrosion Curves
•  Hydrochloric Acid
•  Nickel Alloy Corrosion Comparison Chart
•  Nitric Acid
•  Sulfuric Acid

HASTELLOY C276 SPECIFICATIONS: N10276, ASTM B574, ASME SB574, Werkstoff 2.4819, ASTM G28-A/B, EN 10204-3.1, ASME B18.2.2, ASTM B619, ASME SB619, ASTM B366, ASME SB366, WPHC276, ASME B16.11, ASTM B564/ASME SB564, COLD DRAWN, HOT FINISHED, ASTM B575, ASME SB575, COLD ROLLED, HOT ROLLED, ASME B16.9, ASME B16.5, ASTM B462, ASME SB462, ASTM F467 (Nuts), ASTM F468 (screws, bolts, studs)

HASTELLOY B2 (2.4617)
Hastelloy B2 alloy, UNS N10665, offers excellent resistance to hydrochloric acid in all temperatures and concentrations, yet has poor corrosion resistance to oxidizing chemicals and in the presence of ferric or cupric salts. In addition, Hastelloy B2 has excellent resistance to pitting, stress corrosion cracking, and to knife-line and heat-affected zone attack. However B2 has little chromium, and it should NOT be used with oxidizing media in the presence of salts.  Like other Hastelloy alloys, B2 fasteners can be used in the as-welded condition because they resist the formation of grain-boundary carbide precipitates in the weld heat-affected zone. It is recommended that B2 fasteners not be utilized between 1000° F and 1600° F because of a reduction in the ductility.

B2 Corrison Data & Iso-Corrosion Curves
•  Hydrochloric Acid
•  Phosphoric Acid
•  Sulfuric Acid

HASTELLOY B2 SPECIFICATIONS: N10665, ASTM B619, Werkstoff 2.4617, ASME SB619, ANNEALED, B/SB619 CLASS I OR II, X-RAY PER ASME SECTION VIII DIVISION 1 UW-51, MERCURY FREE, EN 10204-3.1, ASTM B366, ASME SB366, WPHB2-S, ASME B16.11, ASTM B335, ASME SB335, ASME B16.3, MSS SP-83, ASTM B564/ASME SB564, COLD DRAWN, HOT FINISHED, ASTM B333, ASME SB333, SHEET IS COLD ROLLED, HOT ROLLED, ENIMO-7, AWS A-5.11, ASME SFA-5.11

HASTELLOY B3 (2.4600)
Hastelloy B3 alloy, UNS N10675, is specifically designed to deal with very aggressive hydrochloric acid (HCl), hyrdrobromic acid (HBr) and sulfuric acids (H2SO4) as well as acetic, formic and phosphoric acids. Hastelloy B3 fasteners deliver the same excellent resistance to hydrochloric acid and other strongly reducing chemicals as other B-alloys (including B2) but with significantly enhanced thermal stability and improved ease of fabrication. However B3 has little chromium, and it should NOT be used with oxidizing media and is not recommended for use in the presence of ferric or cupric salts which can cause rapid corrosion failure.

B3 Corrison Data & Iso-Corrosion Curves
•  Hydrobromic Acid
•  Hydrochloric Acid
•  Phosphoric Acid
•  Sulfuric Acid

HASTELLOY B3 SPECIFICATIONS: N10675, ASTM B366, ASME SB366, Werkstoff 2.4600, WPHB3-W, ASME B16.9, ANNEALED, MERCURY FREE, EN 10204-3.1 (W/O X-RAY), ASTM B335, ASME SB335, ASTM B564, ASME SB564, DIMENSIONS PER ASME B16.5, ASTM B462, ASME SB462, ASME B16.5, COLD DRAWN, HOT FINISHED, ASTM B626, ASME SB626, B/SB626 CLASS III, ASTM B333, ASME SB333, COLD ROLLED, HOT ROLLED

HASTELLOY C22 (2.4602)
Hastelloy C22 alloy, UNS N06022, has better overall corrosion resistance in oxidizing corrosives than C-276 and Inconel 625 alloys due to the higher chromium content. More specifically, C22 fasteners provides better protection when used in certain saturated wet chlorine environments. In addition, its high chromium content provides C22 fasteners much better resistance to oxidizing media that C276. This provides it exceptional resistance to chloride-induced pitting although, in most cases because of its availability, C-276 fasteners are a more cost-effective option. Hastelloy C22 fasteners also offer outstanding resistance to pitting and crevice corrosion, as well as stress corrosion cracking. Use of C22 fasteners should be limited to temperatures below 1250° F. This alloy has limited availability and can be made into fastener in larger diameters only (1/2" and greater in size).

C22 Corrison Data & Iso-Corrosion Curves
•  Hydrochloric Acid
•  Nitric Acid
•  Nickel Alloy Corrosion Comparison Chart
•  Phosphoric Acid
•  Sulfuric Acid

HASTELLOY C22 SPECIFICATIONS: SB 575/B 575, SB 574/B 574, SB 366/B 366 SB 462/B 462, SB 564/B 564 SB 462/B 462, Werkstoff 2.4602, 17744 No. 2.4602 NiCr21Mo14W, NACE MR0175 ISO 15156

HASTELLOY C2000 (2.4675)
Hastelloy C2000 alloy, UNS N06200, is a corrosion resistant alloy with excellent resistance to uniform corrosion in oxidizing or reducing environments. Hastelloy C2000 fasteners combine the outstanding resistance to oxidizing media of C276 with superior resistance to non-oxidizing environments, making it a unique alloy for protecting chemical process equipment that has a range of conditions. C2000 fasteners are designed to offer greater versatility compared to the other Hastelloy alloys. The addition of copper provides C2000 fasteners enhanced temperature capability in sulfuric acid, hydrofluoric acid, and dilute hydrochloric acid. Due to its high chromium content protects process streams contaminated with ferric ions. In addition, C2000 fasteners have excellent resistance to stress corrosion cracking and superior resistance to localized corrosion as compared to C-276 alloy.

C2000 Corrison Data & Iso-Corrosion Curves
•  Hydrobromic Acid
•  Hydrochloric Acid
•  Nitric Acid
•  Sulfuric Acid

HASTELLOY C2000 SPECIFICATIONS: SB 575/B 575, SB 574/B 574, SB 366/B 366 SB 462/B 462,SB 564/B 564 SB 462/B 462, Werkstoff 2.4675, NACE MR0175 ISO 15156

HASTELLOY X (2.4665)
Alloy X, UNS N06002, is most known for its exceptional combination of high temperature oxidation resistance up to 2000°C and high temperature strength. Being stable, strong and ductile at high temperatures are its most notable characteristics which is often utilized in gas turbine components and furnace components.

HASTELLOY X SPECIFICATIONS: AMS 5536, AMS 5754, AMS 5798, ASME SB 435, ASME SB 572, ASME Sect. IX P No. 43, ASME Section IX P No. 43, ASME SFA 5.14, ASTM B 435, ASTM B 572, EN 2.4665, GE B50A436, GE B50T83, GE B50TF24, PDS 1038 (X-low), PDS 15102QFC, UNS N06002, Werkstoff 2.4665

MECHANICAL PROPERTIES OF HASTELLOY

Hastelloy Corrosion Data

Hastelloy C276 Iso-Corrosion Curves for HCl & H₂SO₄

Hastelloy Screws

12 Point Screws	Hastelloy 12 point screws allow for higher torque to be applied than a socket head cap screw or head head bolt, however they are be less economical due to the complex head design. Available in 1/4" or larger sizes.	•  IFI-115 •  MIL SPEC •  DIN 34822 •  DIN 34821
Button Head Cap Screws	Hastelloy button head screws offer a wide clamping area and low profile. They are best for fastening material that is too thin to counter bore.	• ASME B18.3 • ASME 18.3.4M • DIN 7380 / ISO 7380
Flat Head Screws	Hastelloy flat head screws are most commonly offered in an 82° countersink angle, but can be customized to other angles from 60° -120° and are designed to be flush with the surface.  Available in slotted and socket drivers. Phillips, 6-lobe, torx and tamperproof drivers in Hastelloy flat head screws can be made require special manufacturing.	•  ASME B18.3 •  ASME B18.3.6 •  DIN 963 / ISO 2009 •  DIN 965 / ISO 7046 •  DIN 7991 / ISO 10642
Hex Head Cap Screws	Hastelloy hex head cap screws offer the added washer face to the bolt head which is lacking on a hex bolt and tighter dimensional tolerances. Ideal for a high clamping force applications with ease of access. Generally availabe in #2 - 1/2" sizes and metric sizes.	• ASME B18.6.3 • DIN 931 / ISO 4014 • DIN 933 / ISO 4017 • DIN 961 / ISO 8676
Pan Head Screws	Hastelloy pan head screws offer a rounded top are best used for small diameter faster needs. Offered in slotted and they are ideal for low torque applications.	• ASME B18.6.3 • DIN 7985 • DIN 921 • DIN 85 / ISO 1580 • DIN 84 / ISO 1207   (cheese head) • DIN 966 / ISO 7047   (raised counter sunk)
Security Screws	Unique driver designs offer these Hastelloy screws resistance to unwanted tampering or removal due to the fact that they cannot be removed using an ordinary driver. Hastelloy security screws are available in several different drive styles, as well as custom per print.
Set Screws	Hastelloy set screws are available in cup, cone, flat, dog and half-dog points. Set screws have no head and are equiped with a socket or slotted driver at one end.	• ASME B18.3 • DIN 913 / ISO 4026 • DIN 914 / ISO 4027 • DIN 915 / ISO 4028 • DIN 916 / ISO 4029
Socket Head Cap Screws	Hastelloy socket head cap screws are ideal for limited access situations where there is little clearance around the screws. They offer a safe, reliable and economic solution.	• ASME B18.3 • DIN 912 / ISO 4762 • DIN 7984
Vented Screws	Hastelloy vented screws are best for vacuum environments because the hole drilled through its axis (from head through threads) allow gases and other contaminents to vent. Hastelloy vented screws are available in any style.

Hastelloy Bolts

Hex Head Bolts	Hastelloy hex bolts are similar to hex head cap screws but without the added washer face. They are ideal for high clamping force applications with ease access.	• ASME B18.2.1 • DIN 931 / ISO 4014 • DIN 933 / ISO 4017
Shoulder Bolts	Hastelloy shoulder bolts are made up of a head, shoulder and threaded segment. The smooth shoulder section allows for rotating parts. Typically available with socket drivers.	• ASME • DIN 7379 / ISO 7379 • ISO 7370
Wedge Anchor Bolts	Hastelloy wedge anchor bolts offer a safe secure fastening solution for attaching equipment and other materials to concrete in corrosive environments.

Hastelloy Nuts

Hex Nuts	Hastelloy hex nuts are available in a variety of styles including finished hex nuts, jam nuts and heavy hex nuts.	• ASME B18.16.3 • ASME B18.2.2 • DIN 439 / ISO 4035 • DIN 934 / ISO 4032 • DIN 986
Lock Nuts	Hastelloy lock nuts are available in all metal and polymer insert styles. All-metal lock provide even load distribution and can be used at high temperatures. Polymer  insert styles are more economical and are best for temperatures under than 350°F.	• ASME B18.16.3M • DIN 980 / ISO 7042 /     ISO 19513 • DIN 6923 / ISO 4161 • DIN 985 / ISO 10511 /   ISO 7040

Hastelloy Studs & Threaded Rod

Studs	Hastelloy studs are fully threaded or partially threaded and made to custom lengths.	• ASME B18.31.2 • DIN 976
Threaded Rod	Hastelloy threaded rod or all thread are available in lengths greater than 1 foot. Minimum order quantity is a total of 6 feet of length.	• ASME B1.1 • DIN 975
Weld Studs	Hastelloy weld studs are available in both arc or capacitor discharge (CD) styles. Weld studs provide an extremely secure fastening solution when one side of the stud needs to be permanently fix to a part and the other side with the threads accessible.

Hastelloy Washers

Flat Washers	Hastelloy washers are most commonly offered in SAE sizes, but also availabe in USS, oversized and custom sizes upon request.	• ASME 18.21.1 • SAE / USS • DIN 125 / ISO 7089 /   ISO 7090 • DIN 126 / ISO 7091
Lock Washers	Hastelloy lock washers are offered as split lock washers. Belleville spring lock washers can also be made upon request.	• ASME B18.21.1 • DIN 127 / ISO 7090 • DIN 6796 /  ISO 10690

Hastelloy Hose Clamps

Medium Duty Hose Clamps

Hastelloy hose clamps feature a nut-and-bolt hose clamp with rolled band edges for the most secure, higher torque hold that is usable in both high and low pressure conditions.

SAE

Hastelloy C276 Gaskets (2.4819)

A semi-metalic nickel alloy gasket used for severe corrosion environments

JG/JP Gasket

Parameters Temp: Cryogenic to 1830°F / 1000°C Pressure: Vacuum to 5800psi / 400bar Pressure class: 1500 / PN400 Carrier metal:  Stainless & Specialty alloys Thickness: 0.098" to 0.394" (2.5 - 10mm) Max dimension: 144in / 4000mm

Applications Extreme pressure & temperatures Corrosive media, H2, hazardous service Replaces: Spiral Wound / Kammprofile

Advantages Leak rate 15000x less than spiral wound Extreme pressure / vacuum sealing Highest temperature stability Corrosion & temp resistant alloys Customizable for dissimilar flanges & gaps Very low sealing force required Minimal graphite residue on change out Metal sealing protects PTFE / Graphite

• Excellent corrosion resistance to sulfuric & hydrochloric acids
• Good mechanical properties at elevated temperatures
• C276 and C22 chemistry & specs
• Availability and lead time
• Hastelloy C276 Datasheet

Hastelloy Gasket Overview

Hastelloy gaskets are ideally suited for a wide variety of medium to severe corrosive acid environments.  The most common grade for Hastelloy gaskets is Hastelloy C276 (2.4819), which is the one of the most versatile of the corrosion resistant nickel alloys – exceeding that of Inconel or Monel. Hastelloy gaskets are also available in other specialty grades that can address more niche corrosion issues. Hastelloy is often used for applications involving:

• Sulfuric and hydrochloric acid (H2SO4 & HCl)
• Sour gas
• Chlorides, wet chloride gas and chlorine solutions
• Solvents
• Formic and acetic acids
• gaskets
• Hypochlorites
• Phosphoric acid

Hastelloy semi-metalic gaskets with a PTFE or graphite soft sealing material are available in the Revoseal JG / JP design which is usable in the most corrosive environments and has a pressure rating of from vacuum to 5800psi / 400bar. WIth a leak rate 15000x less than spiral wound gaskets, you can be sure that hazardous fumes and vapors will be conatained creating the safest work environment possible. Furthermore, our Hastelloy gaskets are customizable and accomodate dissimilar flange faces and large gaps.  

Because Hastelloy gaskets are resistant to some of the most severe chemicals, this very material often finds use in oil & gas sour gas service, chemical processing, power industries flue gas desulfurization systems, off-shore oil and down hole environments, pulp & paper bleaching and digesters, as well as other industrial facets where corrosion is an issue.

Hastelloy Gasket Availability

Custom Availability
Various Hastelloy grades and gasket designs can be made to order with standard lead time to be approximately 4 weeks. Be sure to contact us for specific lead times and any expediting needs.

• Max dimension: 144in / 4000mm
• Custom to print available
• NACE MR0175, ASTM, ASME, DFAR and Domestic available

Expediting Options
Lead Time is important?  You have down equipment?  No problem.  Just let us know what you need and we will do our very best to accommodate.
 

Common Hastelloy Gasket Grades

Confused about which grade of Hastelloy is best for your corrosive application? Read this short blog post which gives an overview of each grade's strength. If you need more in-depth direction or contact our engineering team for expert guidance.

HASTELLOY C276 (2.4819)
Hastelloy C276 alloy, UNS N10276, is the most widely used and versatile corrosion resistant nickel alloy. Hastelloy gaskets offer very good resistance to strong reducing and moderately oxidizing corrosive acids, as well excellent stress corrosion cracking resistance and resistance to localized attack. Outstanding corrosion resistance to various concentrated, hot acids and reducing environments, C276 gaskets are readily used in hot sulfuric and hydrochloric acid applications. Hastelloy's resistance to sulfuric acid makes it a common choice for protection from hydrogen sulfide (H2S), more commonly known as sour gas. In addition, Hastelloy C276 is one of the few grades resistant to wet chloride gas and chlorine dioxide. The Hastelloy C276 grade also offers excellent mechanical properties at elevated temperatures up to 1500°F / 815°C, making it ideal for hot corrosive environments. Because of these properties, Hastelloy C276 gaskets have resistance to a wide range of acids, chlorides, and strong halides which is why they are often utilized in the chemical processing and the oil & gas industries. The only factor that is critical to point out when dealing with very strong oxidizing environments like nitric acid is that Hastelloy C276 gaskets can be attacked as it has a low chromium content compared to other grades like Hastelloy C22. For more indepth material information, download our Hastelloy C276 Datasheet.

C276 Corrison Data & Iso-Corrosion Curves
•  Hydrochloric Acid
•  Nickel Alloy Corrosion Comparison Chart
•  Nitric Acid
•  Sulfuric Acid

HASTELLOY C276 SPECIFICATIONS: N10276, ASTM B574, ASME SB574, Werkstoff 2.4819, ASTM G28-A/B, ASME B18.2.2, ASTM B619, ASME SB619, ASTM B366, ASME SB366, WPHC276, ASME B16.11, ASTM B564/ASME SB564, COLD DRAWN, HOT FINISHED, ASTM B575, ASME SB575, COLD ROLLED, HOT ROLLED, ASME B16.9, ASME B16.5, ASTM B462, ASME SB462, ASTM F467 (Nuts), ASTM F468 (screws, bolts, studs)

HASTELLOY C22 (2.4602)
Hastelloy C22 alloy, UNS N06022, has better overall corrosion resistance in oxidizing corrosives than C-276 and Inconel 625 alloys due to the higher chromium content. More specifically, C22 gaskets provides better protection when used in certain saturated wet chlorine environments. In addition, its high chromium content provides C22 gaskets much better resistance to oxidizing media that C276. This provides it exceptional resistance to chloride-induced pitting although, in most cases because of its availability, C-276 gaskets are a more cost-effective option. Hastelloy C22 gaskets also offer outstanding resistance to pitting and crevice corrosion, as well as stress corrosion cracking. Use of C22 gaskets should be limited to temperatures below 1250° F. 

C22 Corrison Data & Iso-Corrosion Curves
•  Hydrochloric Acid
•  Nitric Acid
•  Nickel Alloy Corrosion Comparison Chart
•  Phosphoric Acid
•  Sulfuric Acid

HASTELLOY C22 SPECIFICATIONS: SB 575/B 575, SB 574/B 574, SB 366/B 366 SB 462/B 462, SB 564/B 564 SB 462/B 462, Werkstoff 2.4602, 17744 No. 2.4602 NiCr21Mo14W, NACE MR0175 ISO 15156

MECHANICAL PROPERTIES OF HASTELLOY

Hastelloy Corrosion Data

Hastelloy C276 Iso-Corrosion Curves for HCl & H₂SO₄