Heat-resistant stainless steel
310S / 1.4845 stainless steel
310S / 1.4845 is 25 % Cr / 20 % Ni. The classic heat-resisting stainless steel for dry, high temperature.
- Delivery conditions
- solution annealed
- Also known as
- 1.4845, X8CrNi25-21, AISI 310S, SS 2361
Designations
- W.Nr.
- 1.4845
- EN standard
- X8CrNi25-21
- AISI/SAE
- 310S
- SS (Sweden)
- 2361
- UNS
- S31008
- JIS
- SUH310S
- Group
- Stainless steel
What it is used for
Furnace parts, muffles and flue gas where 304/316 oxidise.
Limits
253MA often handles the same oxidation with less Ni. 314 when Si needs to be higher. Not a 316L for wet chlorides.
Delivery
We source 310S from European mill partners as round bar, plate, flat bar, seamless tube, welded tube, cut to your dimensions and ship the certificate with the material. Typical condition: solution annealed. Standard: X8CrNi25-21. From a single cut piece to larger lots — with no minimum charge, so you do not have to buy a full commercial length to get what you need.
Certificates and documentation
310S can be supplied with a material certificate to EN 10204, depending on producer, dimension and the requirements specified for the delivery. On stainless, the analysis and the delivery condition are what the certificate shows. If a specific test or an ageing/hardening condition is to be documented, it must be specified before we order. EN 10204 3.1 can be supplied on a wide range of our materials.
Dimension programme
| Form | Range | Note |
|---|---|---|
| Round bar | Ø20–120 mm | Per job. |
| Flat bar | Cut to order | Stainless flat. |
| Plate | 3–30 mm thickness | Dry heat. Not 253MA. |
| Seamless tube | Ø13.5–Ø508 mm | DN8–DN500. Wall up to 31 mm. ASME 1/4–16″. |
| Welded tube | Ø21.3–Ø610 mm | Welded stainless. Wall to ISO 1127. State whether the weld seam must be documented. |
| Fittings | Ø12–Ø2000 mm | ASME 1/2–60″ (Ø15–Ø1524 mm). Type A and B. Not a stock statement. |
| Flanges | Ø14–Ø2000 mm | ASME 1/2–60″ (Ø15–Ø1524 mm). PN 6–400. Not a stock statement. |
Parts of the range are held by European partners; other dimensions can be sourced. The range is not a current stock status in every diameter — stock is confirmed on enquiry.
Frequently asked questions
- What is the Werkstoff number for 310S?
- The Werkstoff number is 1.4845. The same grade may appear as 310S, 1.4845 or both on the drawing.
- What is the AISI/SAE equivalent of 310S?
- AISI/SAE 310S is the closest American designation. Chemistry, mechanical requirements and certificate must be checked before substituting.
- In which condition is 310S supplied?
- Typically solution annealed. State the condition the certificate must carry.
- Which dimensions can Industristål supply in 310S?
- 310S / 1.4845 as round bar typically Ø20–120 mm. Length is cut. The range is a delivery programme — not a stock statement.
- Can Industristål supply a single piece in 310S?
- Yes. We also supply single pieces and small quantities with no minimum charge. You do not have to take a full commercial length.
- Can the material be supplied with a 3.1 certificate?
- Yes. EN 10204/3.1 can be supplied where relevant for 310S. 3.2 is ordered before we lock the material.
Read more
Send your enquiry
State grade, dimensions and quantity — or attach a drawing. We reply with a quote.