Excellent resistance to oxidation under mildly cyclic conditions through 2000°F characterizes 310 Stainless steel. Because of its high chromium and medium nickel contents, 310 Stainless steel has good resistance to sulfidation and other forms of hot corrosion. 310 is widely used in moderately carburizing atmospheres such as encountered in petrochemical environments. 310 is not suggested for the severe thermal shock of repeated liquid quenching.
Often in many product forms, the grain size and carbon content can meet both the Stainless steel 310S and Stainless steel 310H requirements. 310 Stainless steel is often used at cryogenic temperatures, with excellent toughness to -450°F, and low magnetic permeability. 310 Stainless steel has a machinability rating of 42% relative to AISI B1112 steel. When using high speed steel tooling, this equates to about 70 surface feet per minute. Forming operations should be performed at room temperature whenever possible.
Chemistry
| Cr | Ni | C | Si | Mn | P | S | Mo | Cu | Fe | |
|---|---|---|---|---|---|---|---|---|---|---|
| MIN | 24.0 | 19.0 | - | - | - | - | - | - | - | - |
| MAX | 26.0 | 22.0 | 0.08 | 0.75* | 2.0 | 0.045 | 0.03 | 0.75 | 0.5 | Balance |
* ASTM specification 1.50 max Si.
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
Inventory
310 Stainless steel bar, 310 Stainless steel Pipes, 310 Stainless steel Plate, 310 Stainless steel pipe fittings,
310 Stainless steel flanges, 310 Stainless steel tubes, 310 Stainless steel Welding Products.
Common Trade Names
310 Stainless
Features
- Oxidation resistance to 2000°F
- Moderate strength at high temperature
- Resistance to hot corrosion
- Strength and toughness at cryogenic temperatures
Applications
- Flare tips
- Fluidized bed coal combustors
- Stainless steel tubes
- Tube hangers for petroleum refining and steam boilers
- Coal gasifier internal components
- Stainless steel pipes
- Stainless steel pipe fittings
- Refractory anchor bolts
- Retorts, muffles, annealing covers
- Food processing equipment
- Stainless steel flanges
Physical Properties
Density: 0.284 lb/inch3
Melting Point: 2470 - 2555°F
Melting Point: 2470 - 2555°F
| Temperature, °F | 70 | 1000 | 1200 | 1400 | 1600 | 1800 | 2000 |
| Coefficient* of Thermal Expansion, in/in°F x 10-6 | - | 9.5 | 9.8 | 10.05 | 10.15 | 10.3 | 10.6 |
| Thermal Conductivity Btu • ft/ft2 • hr • °F | 7.6 | 13.6 | 15.2 | 16.8 | 18.4 | 20.0 | - |
| Modulus of Elasticity, Dynamic psi x 106 | 29.0 | 23.0 | 21.8 | 20.5 | 19.2 | - | - |
* 70°F to indicated temperature.
Mechanical Properties
Representative Tensile Properties
| Temperature, °F | 10 | 1000 | 1200 | 1400 | 1600 |
| Ultimate Tensile Strength, ksi | 80.0 | 67.8 | 54.1 | 35.1 | 19.1 |
| 0.2% Yield Strength, ksi | 35.0 | 20.8 | 20.7 | 19.3 | 12.2 |
| Elongation, % | 52 | 47 | 43 | 46 | 48 |
Typical Creep- Rupture Properties
| Temperature, °F | 1200 | 1400 | 1600 | 1800 |
| Minimum Creep 0.0001%/Hr, ksi | 14.9 | 3.3 | 1.1 | 0.28 |
| 10,000 Hour Rupture Strength, ksi | 14.4 | 4.5 | 1.5 | 0.66 |
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