Unique for its strength, lightness of weight and corrosion resistance
- Practically inert to chloride, chlorines and seawater
- Excellent strength to weight ratio
- Mechanical Properties: tensile, yield & elongation charts
- Titanium Grade 2, 5, 7 and 23 chemistry & specifications
- Titanium fastener styles
- Fastener stock & availability
Titanium fasteners are best known for being strong, lightweight, and corrosion resistant. They are critical to many industries including chlor alkali, marine, off-shore oil & gas, desalination, medical, and pulp and paper. Grade 2 and 5 are the most commonly used grades of titanium screws:
• Grade 2: Commercially pure titanium and the most common grade for screws.
• Grade 5: Superior strength-to-weight ratio for a unique combination of corrosion and high strength.
Perhaps the most notable attribute of titanium is its superior corrosion resistance to salt water / seawater. Titanium screws have the unique ability to rapidly regrow their protective passive layer in the presence of oxygen, giving them unparalleled resistance to salt water environments.
• Proven resistance in decades of polluted seawater
• Usable in ocean depths of a mile beneath the surface
• Resistant to high velocity, rapidly moving currents as well as stagnant seawater
• Not affected by the presence of sulfides in seawater
• Ideal for sea splash and tide zones
• Seawater resistant to temperatures as high as 500°F (260°C)
Chloride, Chlorine & Other Media
Similar to salt water, titanium’s strong, protective oxide film which regenerates in oxygen makes it extremely resistant to oxidizing environments, and chlorides solutions, including hypochlorites, chlorates, perchlorates, sodium chlorite, and chlorine dioxide. This protection holds true as long as moisture is present – which can be as little as 50ppm of moisture. Oxidizing environments in the absence of water can cause titanium to rapidly corrode or even ignite. Titanium screws are not resistant to reducing media and acids (see chart).
Not only are titanium grade 5 fasteners extremely strong, offering 148 ksi UTS and 138ksi yield they are also incredibly light. With a density of 4.51 g /cm3, titanium has on of the the highest strength-to-weight ratios available to industry. Titanium Grade 5 screws are 4 times stronger than 316 stainless steel at nearly half the weight. This makes titanium fasteners ideal for applications that require both lightness of weight and excellent strength such medical, military and sporting goods.
Which Grade is Best for Your Application?
The most common grades of of Titanium fasteners are Grade 2 and Grade 5. Still now sure? With decades of materials expertise and industrial experience, our engineers can help you select the best titanium fastener for your application. Other resources include: Titanium Torque Specs, Flange Dimensions, Flange Bolting Chart.
Titanium screws, bolts, nuts, washers, lock washers, hose clamps and threaded rods are stocked and ready to ship. Below is a list of some of the most commonly stocked sizes but please check with us as other sizes are available and our stock is updated regularly.
• Grade 2: Sizes M2 - M8; #2 - 3/8”
• Grade 5: Sizes M2 – M16; #4 – ½”
Titanium screw styles, if not in stock, can be made to order with minimum quantities, typically around 25 pcs. We also can provide fasteners in Titanium grade 7 and grade 23. The normal lead time for standard titanium is only few days. For custom titanium fasteners, we can typically ship in about 4 weeks. Be sure to contact us for specific lead times and expediting needs.
• Diameter sizes: Standard #00 – 4” in diameter / Metric M1.2 – M48
• Threads: UNC, UNF, UNJ, UNR, Rolled or Cut
• Minimum Volume – Typically 25pcs depending on size and stock
• Custom to print
• NACE MR0175, ASTM, ASME, MIL specifications, DFAR and Domestic available
Time critical? Just let us know! We have a large stock of grade 2 and 5 titanium fasteners, ready to ship and do our best to accommodate your needs.
Titanium Grade 2 (Commercially Pure)
Unalloyed titanium; Commercially pure titanium is the most common grade of titanium utilized throughout industry due to its ease of availability and good properties. Learn more about titanium grade 2.
Titanium Grade 2 Specifications: UNS R50400, ASTM B 348, AMS 4921, ASTM F 67, ISO 5832-2, Werkstoff 3.7035
Titanium Grade 5 (Ti 6Al-4V)
Known as the “workhorse” of the titanium alloys, Ti 6Al-4V, or Grade 5 titanium, is 2x stronger than titanium grade 2. This alloy offers high strength and light weight, useful formability and high corrosion resistance. Ti 6AI-4V finds many uses in the aerospace, medical, marine and chemical processing industries. Learn more about grade 5 titanium.
Titanium Grade 5 Specifications: ASTM - B265, B348, B381, B861, F467 and F468, AMS - 4911, 4928, 4935, 4965 and 4967, MIL-T - 9046 and - 9047, Werkstoff 3.7165
Titanium Grade 7
Grade 7 is the most corrosion resistant of all titanium alloys and is typically used in chemical processes and production equipment components. Similar to Grade 2, but with the addition of 0.12 to 0.25% palladium, Grade 23 has enhanced corrosion resistance to reducing acids and localized attack in hot halides.
Titanium Grade 7 Specifications: ASTM - B265, B337, B338, B348, B363, B381, B861 and B862, Werkstoff 3.7235
Titanium Grade 23 (TI 6AL-4V ELI)
Titanium grade 23 or TI 6AL-4V ELI is an Extra Low Intersticial grade. This grade is similar to Grade 5, but because of the low intersticials, its mechanical properties are enhanced. This ELI grade is often found in more demanding medical device applications as well as industrial applications.
Titanium Grade 23 Specifications:
ASTM - B265, B348, B363, B381, B861, B862 andF136, AMS - 4907, 4930 and 4956
Other titanium grades are also available upon request.
|12 Point Screws||Titanium 12 point screws are best for applications that require higher torque than a socket head cap screw or head head bolt, however they are be less economical due to the complexity to manufacture the head. Available in 1/4" or larger sizes.|
|Button Head Cap Screws||Titanium button head screws offer a wide clamping area and low profile. Button heads are most commmonly available with a socket driver and are best for fastening material that is too thin to counter bore.|
|Flat Head Screws||Titanium flat head screws are typically offererd in a 82° countersink angle, but can be custom made to other angles from 60° -120°. Available in slotted and socket drivers, titanium flat head screws are designed to be flush with the surface. Phillips, 6-lobe, torx and tamperproof drivers can also be specially manufacturing per drawing.|
|Hex Head Cap Screws||Hex head cap screws offer an added washer face to the bolt head which is lacking on a hex bolt. Titanium hex head cap screws provide tighter dimensional tolerances over hex bolts. These screws are best used for applications that need a high clamping force with easy access. Generally available in #2 - 1/2" sizes and metric sizes.|
|Pan Head Screws||Titanium pan head screws feature a rounded top are with either a slotted or phillips driver. These screws are best used for small diameter fastener needs, as well as low torque applications.|
|Security Screws||When security is critcal, titanium tamper proof driver designs provide resistance to unwanted removal due to the fact that they are not accessible with an ordinary driver. Titanium security screws are available in several different drive styles and heads, as well as custom per print.|
|Set Screws||Titanium set screws are available in cup, cone, flat, dog and half-dog points. Set screws have no head and feature a socket or slotted driver at one end.|
|Socket Head Cap Screws||Titanium socket head cap screws are known as a safe reliable fastener in limited access situations where there is little clearance around the screws. They are also economic.|
|Vented Screws||Vented screws are ideal for high vacuum fastening because the hole drilled through its axis (from head through threads) allows gases/contaminents to vent and relieve pressure. Titanium vented screws are available in any style.|
|Hex Head Bolts||Titanium hex bolts are similar to hex head cap screws but without the added washer face. They are an economic solution to high clamping force applications with ease access.|
|Shoulder Bolts||Titanium 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.|
|Hex Nuts||Titanium hex nuts are available in a variety of styles including finished hex nuts, jam nuts and heavy hex nuts.|
|Lock Nuts||Lock nuts are available in all metal (all metal, flexloc and stover) and polymer insert styles. All-metal titanium 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.|
|Studs||Titanium studs are fully threaded or partially threaded and made to custom lengths.|
|Threaded Rod||Titanium threaded rod or all thread are available in lengths greater than 1 foot. Minimum order quantity is a total of 6 of rod (1 x 6ft rod, 2 x 3ft rods, etc.).|
|Weld Studs||Weld studs are available in both arc or capacitor discharge (CD) styles. Titanium weld studs provide an extremely secure fastening solution for permanent attachments with only one side accessible.|
|Flat Washers||Titanium washers are stocked in SAE sizes, but also availabe in USS, oversized and custom sizes upon request.|
|Lock Washers||Titanium split lock washer are available in stock. Belleville spring lock washers can also be made upon request.|
|Worm Drive Hose Clamp||Titanium worm drive hose clamps offer an economic and resusable connection.|
|Medium Duty Hose Clamps||Titanium 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.|
|Blind Flanges||Titanium blind flanges are used to seal a flanged connection.|
|Lap Joint Flanges||Lap joint flanges fit over stub end, allowing the flanges to rotate freely so it is easy to align bolt holes. Titanium lap joint flanges are ideal for processes that require frequent changes. Both the flange and stub ends are offered.|
|Slip On Flange||Titanium slip on flanges are similar to socket weld flanges but without the socket shoulder. Slip on flanges make it possible for the pipe to slide completely through the flange hub.|
|Socket Weld Flanges||Titanium socket weld flanges feature an added shoulder inside the bore hole which the pipe rests against. They are ideal for small size, high pressure applications.|
|Threaded Flanges||Titanium threaded flanges have a tapered thread to tightly seal to the threads of a pipe. In hazardous/flammable conditions, threaded flanges are the answer when welding is not possible. Titanium threaded flanges are also used for small pipe connections.|
|Weld Neck Flanges||Titanium weld neck flanges are unique in that they have a long tapered neck with the bore to match the inside diameter of the pipe. This joint prevents turbulance and is best for high pressure, hazzardous applications|