310 Stainless Steel
UNS S31000
Description
310 stainless steel is an austenitic stainless steel with a high nickel and chromium content which makes the alloy has heat resistant with excellent resistance to oxidation under mildly cyclic conditions through 2000 °F. Its high chromium and nickel contents also provide comparable corrosion resistance and the retention of a larger fraction of room temperature strength than the common austenitic alloys like alloy 304. In addition, 310 stainless steel is often used at cryogenic temperatures, with excellent toughness to -450 °F, and low magnetic permeability. Often in many product forms, the grain size and carbon content of 310 stainless steel can meet both the 310S and 310H requirements.
Chemical Component
| Ni | Cr | Mn | Si | C | S | P | Mo | Cu | Fe |
|---|---|---|---|---|---|---|---|---|---|
| 19.0-20.0% | 24.0-26.0% | 2.0% | 0.75%* | 0.08% | 0.03% | 0.045% | 0.75% | 0.5% | Balance |
*ASTM specification 1.50 max Si.
Basic Information
| Items | 310 Stainless Steel |
|---|---|
| Catalog | ACMA-Fe-A011 |
| Density | 0.284 lb/in3 |
| Melting Range | 2470-2555 °F |
| Coefficient of Thermal Expansion, in/in°F x 10-6 | 70-1000 °F: 9.5; 70-1200 °F: 9.8; 70-1400 °F: 10.05; 70-1600 °F: 10.15; 70-1800 °F: 10.3; 70-2000 °F: 10.6 |
| Thermal Conductivity, Btu·ft/ft2·hr·°F | At 70 °F: 7.6; At 1000 °F: 13.6; At 1200 °F: 15.2; At 1400 °F: 16.8; At 1600 °F: 18.4; At 1800 °F: 20.0 |
| Modulus of Elasticity Dynamic, psi x 106 | At 70 °F: 29.0; At 1000 °F: 23.0; At 1200 °F: 21.8; At 1400 °F: 20.5; At 1600 °F: 19.2 |
Material Forms
Alfa Chemistry offers 310 stainless steel in a variety of forms, including Reducers, Flanges, Pipe, Plate, Rod Coil, Round Bar, Sheet, Tubing.
Mechanical Properties
- Representative tensile properties
| Temperature, °F | 70 | 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 | 16 | 3.4 | 1.4 | 0.22 |
| 10,000 Hour Rupture Strength, ksi | 17.2 | 4.8 | 1.6 | 0.56 |
Specifications
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
- Radiant tubes
- Tube hangers for petroleum refining and steam boilers
- Coal gasifier internal components
- Thermowells
- Refractory anchor bolts
- Burners, combustion chambers
- Retorts, muffles, annealing covers
- Food processing equipment
- Cryogenic structures
* Technical data included herein should be used as a guideline only, and should not be construed as maximum or minimum values for specification or for final design, or for a particular use or application. The data may be revised anytime without notice.
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