Overview
Stainless steel 310/310S is an austenitic heat resistant alloy with excellent resistance to oxidation under mildly cyclic conditions through 2000°F. 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.
Grade 310S (UNS S31008) is used when the application environment involves moist corrodents in a temperature range lower than that which is normally considered"high temperature"service. The lower carbon content of 310S does reduce its high temperature strength compared to 310.
Specification
ASTM A312/A312M-21 Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes.
| Specifications | ASTM A/ASME SA213 / A249 / A269 |
| Dimensions | ASTM, ASME and API |
| 310S Tubes Size | 10.29 OD (mm) – 762 OD (mm) |
| Thickness | 0.35 OD (mm) to 6.35 OD (mm) in thickness ranging from 0.1mm to 1.2mm. |
| Schedule | SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
| Type | Seamless / ERW / Welded / Fabricated |
| Form | Round Tubes, Custom Tubes, Square Tubes, Rectangular Tubes, “U” Shape, Hydraulic Tubes |
| Length | Single Random, Double Random & Cut Length. |
| End | Plain End, Beveled End, Treaded |
Equivalent Grades for Stainless Steel 310S Pipe and Tube
| Grade | UNS No | Old British | Euronorm | Swedish SS | Japanese JIS | ||
| BS | En | No | Name | ||||
| 310S | S31008 | 310S16 | - | 1.4845 | X8CrNi25-21 | 2361 | SUS 310S |
Chemical Composition
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
310S | min. | – | – | – | – | – | 24.0 | – | 19.0 | – |
| max. | 0.08 | 2.00 | 1.50 | 0.045 | 0.030 | 26.0 | 22.0 | |||
Mechanical Properties
Grade | Tensile Strength | Yield Strength | Elongation | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 310S | 515 | 205 | 40 | 95 | 217 |
Physical Properties
Grade | Density | Elastic Modulus | Mean Coefficient of Thermal Expansion (m/m/0C) | Thermal Conductivity (W/m.K) | Specific Heat 0-1000C (J/kg.K) | Electrical Resistivity (n.m) | |||
| 0-100°C | 0-315°C | 0-538°C | at 100°C | at 500°C | |||||
| 310S | 7750 | 200 | 15.9 | 16.2 | 17.0 | 14.2 | 18.7 | 500 | 720 |
Applications
- 1. Kilns
- 2. Heat Exchangers
- 3. Radiant Tubes
- 4. Muffles, retorts, annealing covers
- 5. Tube hangers for petroleum refiing adn steam boilers
- 6. Coal gasifier internal components
- 7. Saggers
- 8. Furnace parts, conveyor belts, rollers, oven linings, fans
- 9. Food processing equipment
- 10. Cryogenic structures
