ASTM A 240, A 276, A 312 
UNS S31000 / UNS S31008
DIN 1.4845

ss-310[1]

What forms of 310/310S Stainless Steel are available at Hitachi Metal & Alloy?

  • Sheet
  • Plate
  • Bar
  • Pipe & Tube
  • Fittings (i.e. flanges, slip-ons, blinds, weld-necks, lapjoints, long welding necks, socket welds, elbows, tees, stub-ends, returns, caps, crosses, reducers, and pipe nipples)
  • Weld Wire

310/310S Stainless Steel Overview

Stainless steel 310/310S is an austenitic heat resistant alloy with excellent resistance to oxidation under mildly cyclic conditions through 2000ºF. Its high chromium and nickel contents provide comparable corrosion resistance, superior resistance to oxidation and the retention of a larger fraction of room temperature strength than the common austenitic alloys like Type 304. Stainless 310 is often used at cryogenic temperatures, with excellent toughness to -450°F, and low magnetic permeability.

**As you can see below, Grade 310S is a low carbon version of grade 310. 310S is less prone to embrittlement and sensitization in service.

310 UNS S31000 Chemical Composition, %

CrNiCSiMn
24.0-26.019.2-22.0.25 Max1.50 Max2.00 Max
PSMoCuFe
.045 Max.03 Max.75 Max.50 MaxBalance

310S UNS S31008 Chemical Composition, %

CrNiCSiMn
24.0-26.019.2-22.0.08 Max1.50 Max2.00 Max
PSMoCuFe
.045 Max.03 Max.75 Max.50 MaxBalance

What are the characteristics of 310/310S Stainless?

  • Oxidation resistance to 2000°F
  • Moderate strength at high temperature
  • Resistance to hot corrosion
  • Strength and toughness at cryogenic temperatures

Typical Applications for 310/310S Stainless

  • Kilns
  • Heat Exchangers
  • Radiant Tubes
  • Muffles, retorts, annealing covers
  • Tube hangers for petroleum refiing adn steam boilers
  • Coal gasifier internal components
  • Saggers
  • Furnace parts, conveyor belts, rollers, oven linings, fans
  • Food processing equipment
  • Cryogenic structures

Fabrication with Stainless 310/310S

Type 310/310S is readily fabricated by standard commercial procedures. In comparison to carbon steel, stainless steels are tougher and tend to work harden rapidly.

Type 310/310S can be welded using all of the common welding processes.

Mechanical Properties

Representative Tensile Properties

Temperature, °FUltimate Tensile Strength, ksi.2% Yield Strength, ksiElongation Percent
7080.035.052
100067.820.847
120054.120.743
140035.119.346
160019.112.248

Typical Creep-Rupture Properties

Temperature, °FMinimum Creep 0.0001%/hr, ksi100,000 Hour Rupture Strength, ksi
1200014.914.4
14003.34.5
16001.11.5
1800.28.66