Good high temperature oxidation resistance to 2000°F

Designed for high temperature applications, 310 stainless steel socket 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 socket head screws can be used in moderately caburizing, moderately oxidizing, nitriding, cementing and thermal cycling applications when not used at the maximum service temperature. 310SS socket head cap screws also have good resistance to sulfidation and other forms of hot corrosion.  Although primarily known for its high temperature properties, 310 socket 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.

Benefits

  • 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.

Applications

  • Thermal processing and high temperature furnaces rely on 310 socket head screws for their high temperature and oxidation resistance in minor cyclic conditions.
  • 310SS socket 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 socket 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
Density (lb/in3) 0.285
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

Resources: Flange DimensionsFlange Bolting Chart

Alloy 310 Screw Types: 12 Point Screws, Button Head Cap ScrewsFlat Head ScrewsHex Head Cap ScrewsPan Head ScrewsSet ScrewsSocket Head Cap ScrewsTorx Screws, Vented Screws


310 Stainless Steel Chemistry & Specifications

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

310 Chemical Compositon


310SS Socket Head Cap Screw Features and Benefits

When it comes to 310 socket head cap screws, it’s all about clearance. These screws are the best choice for applications with limited installation access or clearance. Yet if you have an application with a lot of debris, you may want to select a 310SS hex head bolt or hex head cap screw, as they don’t have a socket drive which could get clogged.

Advantages:
•  Ideal for applications with limited access as they require very little clearance around the fastener.
•  Socket head cap screws can be used in locations where externally wrenched fasteners aren't desirable.
•  Weight reduction on application as 310 socket head cap screws are smaller – being that the cylindrical heads of socket screws need less space than hex heads and require no additional wrench space.
•  Also known for safety, reliability and economy.

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