Stockist & supplier ASTM A240 · ASME SA-240 · ASTM A480
SS 310S Plates — ASTM A240 UNS S31008
SS 310S plate is a 25% chromium, 20% nickel austenitic stainless steel plate for high-temperature oxidation resistance. Teshi Group stocks and supplies ASTM A240 / ASME SA-240 310S (UNS S31008) plate and sheet. Quotes are sent in 24–48 hours.
Also called: 310S plate, SS 310 plate, UNS S31008 plate, 1.4845 plate, heat resisting stainless plate
What is an SS 310S Plate?
Type 310S is a high-chromium, high-nickel austenitic stainless steel designed for service at elevated temperatures, where it resists oxidation and scaling in air. The 'S' version has lower carbon than 310 to improve weldability and reduce carbide precipitation. Its higher silicon limit also helps scaling resistance. It is used for furnace parts, radiant tubes supports, heat-treatment fixtures, kiln liners, burners and heat shields. It is not a first choice for aqueous corrosion where 316L or higher-molybdenum grades are better suited.
Key features
- Stockist and supplier — sourced from stainless mills; Teshi does not manufacture plate
- ASTM A240 / ASME SA-240 Type 310S (UNS S31008)
- High chromium and nickel for oxidation resistance
- Plate and sheet; other sizes supplied against order
- Lower carbon than 310 for better weldability
- Can be ordered together with flanges, fittings and fabrications manufactured by Teshi
Specification
| Supply | Stockist & supplier — Teshi Group, India |
|---|---|
| Standard | ASTM A240 / ASME SA-240; general requirements ASTM A480 |
| Grades | 310S (S31008) |
| Product forms | Plate (3/16 in / 4.76 mm and thicker per ASTM A480), sheet and coil; other sizes supplied against order |
| Condition | Solution annealed and descaled (pickled) |
| Finish | No.1 (hot rolled, annealed, pickled) for plate; 2B, BA or No. 4 for sheet |
| Other plate grades stocked | Carbon / boiler: IS 2062 E250–E450, ASTM A36, A516 Gr 60 / 70, A537; Cr-Mo: ASTM A387 Gr 11, 12, 22, 91; stainless: ASTM A240 304 / 304L / 304H, 309S, 310S, 316 / 316L / 316H / 316Ti, 317L, 321 / 321H, 347 / 347H, 410, 430, 904L, 254 SMO; duplex S31803 / S32205; super duplex S32750 / S32760; nickel: Monel 400 (B127), Inconel 600 (B168), Inconel 625 (B443), Incoloy 800 / 800H / 800HT (B409), Incoloy 825 (B424), Hastelloy C276 / C22 (B575), Hastelloy B2 / B3 (B333), Alloy 20 (B463), Nickel 200 / 201 (B162); titanium Gr 1, 2, 5, 7, 12 (B265); Cu-Ni 90/10, 70/30 (B171) |
| Testing | Chemical and tensile tests per A240; intergranular corrosion test (ASTM A262) when specified |
| Documents | Mill test certificate to EN 10204 3.1; EN 10204 3.2 / third-party inspection when the order specifies |
Applications
- Furnace parts and muffles
- Heat-treatment baskets and fixtures
- Kiln and incinerator liners
- Burner components and heat shields
- Boiler and refinery heater internals
Chemical composition — 310S (ASTM A240)
| UNS | C | Mn | P | S | Si | Cr | Ni |
|---|---|---|---|---|---|---|---|
| S31008 (310S) | 0.08 | 2.00 | 0.045 | 0.030 | 1.50 | 24.0–26.0 | 19.0–22.0 |
Maximum unless a range is shown; % by weight. Per ASTM A240 Table 1.
Mechanical properties
| UNS | Tensile, min (MPa) | Yield 0.2%, min (MPa) | Elongation in 50 mm, min (%) | Hardness, max |
|---|---|---|---|---|
| S31008 | 515 | 205 | 40 | 217 HBW / 95 HRB |
Per ASTM A240 Table 2.
Technical data sheets
Dimensions & weights
FAQ
SS 310S Plate: common questions
What is the difference between 310 and 310S?
310S has lower carbon (0.08% max under ASTM A240) than standard 310, which improves weldability and reduces carbide precipitation. Most plate is supplied as 310S.
Why is 310S used at high temperature?
Its 24–26% chromium and 19–22% nickel form a protective oxide that resists scaling in air at elevated temperatures, and its austenitic structure keeps strength and ductility.
Is 310S better than 316L for corrosion?
Not for most aqueous corrosion. 310S has no molybdenum, so 316L is usually better in chlorides and acids. 310S is chosen for heat and oxidation.
Does Teshi manufacture stainless plate?
No. Teshi Group is a stockist and supplier of SS 310S Plate, sourced from established mills and supplied with the original mill test certificate. Teshi is an OEM manufacturer of flanges, fittings, fasteners, valves and custom fabrications, which can be ordered with it.
Need a size or grade not listed here?
We source against your specification from approved mills, with mill test certificates and inspection before dispatch.
Send us your specificationTraceability
From mill heat to your site
- 01
Approved mill material
Received against the mill certificate; heat number registered.
- 02
Forging & machining
Heat number carried through every stage in our Indian works.
- 03
PMI, dimensional & NDT
Every lot inspected to the governing standard; TPI witness on request.
- 04
Stamped & certified dispatch
Hard-stamped pieces with EN 10204 3.1 / 3.2 certificates.
Quick RFQ
Quote for SS 310S Plate in 24–48 hours
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