Good high temperature oxidation resistance to 2000°F
High temperature stability for moderate strength applications
- Good oxidation and carburization resistant to 2000°F
- Resistance to moderate sulfidation and nitriding
- Economic alternative to high temperature nickel alloys
- 310SS chemistry & specifications
- Features & benefits of 310SS hex head screws
Designed for high temperature applications, 310 stainless steel hex head screws provide high temperature oxidation resistance to 2000°F under mild cyclic conditions. An economic alternative to nickel alloys like alloy 330 or Inconel, 310 screws provide slightly less strength and temperature resistance – but at a significantly lower price point. Alloy 310 hex heads can be used in moderately caburizing, moderately oxidizing, nitriding, cementing and thermal cycling applications when not used at the maximum service temperature. 310SS hex head cap screws also have good resistance to sulfidation and other forms of hot corrosion. Although primarily known for its high temperature properties, 310 hex heads also provide excellent performance at cryogenic temperatures, with toughness down to -450˚F. Though 310 is ideal for high temperature use, it should not be exposed to the severe thermal shock of repeated liquid quenching or where aqueous corrosive contaminants are present.
- High temperature resistance.
- Excellent resistance to oxidation under mildly cyclic conditions.
- Good resistance to sulfidation and atmospheres where sulfur dioxide gas is encountered at elevated temperatures.
- Good resistance to thermal fatigue.
- Excellent toughness to cryogenic temperatures of -450°F.
- Low magnetic permeability.
- Good ductility and weldability.
- Thermal processing and high temperature furnaces rely on 310 hex head screws for their high temperature and oxidation resistance in minor cyclic conditions.
- 310SS hex heads are commonly used in the petrochemical industry for their ability to provide resistance to moderately carburizing atmospheres.
- The high temperature properties of 310 screws make them ideal for ore processing, steel plants, power generation, and sintering.
- Cryogenic structures often use 310SS hex head cap screws for their strength at -450°F and low magnetic permeability.
|310 Stainless Steel Properties|
|Tensile Strength (ksi)||70|
|Yield Strength (ksi)||30|
|Rockwell B Hardness||95|
|Electrical Resistivity (Microhm-in at 68°C)||30.7|
|Modulus of Elasticity (x 106 psi)||28.5|
|Thermal Conductivity at 212°F (BTU/hr/ft2/ft/°F)||8.0|
Alloy 310 Screw Types: 12 Point Screws, Button Head Cap Screws, Flat Head Screws, Hex Head Cap Screws, Pan Head Screws, Set Screws, Socket Head Cap Screws, Tamper Resistant Security Screws, Torx Screws, Vented Screws
310SS Specifications: AMS 5521, AMS 5651, ASME SA 240, ASME SA 312, ASME SA 479, ASTM A 240, ASTM A 276, ASTM A 276 Condition A, ASTM A 276 Condition S, ASTM A 312, ASTM A 479, EN 10095, UNS S31008, UNS S31009, Werkstoff 1.4845
It is important to differentiate between a 310SS hex head cap screw and hex head bolt. Often people assume they are the same, but they are actually very different fasteners in terms of how they are manufactured, as well as from an application perspective. Regardless of your choice, 310 hex heads offer strong, stable joints because of their large head service.
The Hex Comparison
|Hex Head Cap Screw||Hex Head Bolts|
| || |
310 Hex Head Cap Screw Advantages
The most important feature of a 310SS hex head cap screws is that it has a larger bearing surface area which provide better clamping pressure than other type of fastener such as a socket head cap screw. Additionally, since debris build up is less of an issue with this style of fastener verses a socket head cap screw, they are ideal of dirty applications where particles could clog up a socket. Though 310 socket heads are typically used for tight access applications, hex heads can be a better choice when there is only side clearance available for tightening.