Stainless steel / UNS S41008
410S is a low-carbon, non-hardening version of 410, used where weldability and oxidation resistance matter more than hardness — for example as a cladding and lining material.
- UNS S41008
- W.Nr. 1.4000
- Spec ASTM A240
- Density 7.75 g/cm³
Also known as / equivalents
| System | Designation |
|---|---|
| UNS | S41008 |
| W.Nr. | 1.4000 |
| EN | X6Cr13 |
| JIS | SUS410S |
| Also known as | AISI 410S, 1.4000, SUS410S |
Chemical composition
| Element | Min % | Max % |
|---|---|---|
| C | — | 0.08 |
| Mn | — | 1.00 |
| P | — | 0.040 |
| S | — | 0.030 |
| Si | — | 1.00 |
| Cr | 11.5 | 13.5 |
| Ni | — | 0.60 |
| Fe | Bal. | — |
Mechanical properties
| Property | Value |
|---|---|
| Tensile strength (min) | 415 MPa (60.2 ksi) |
| Yield strength, 0.2% offset (min) | 205 MPa (29.7 ksi) |
| Elongation in 50 mm (min) | 22 % |
| Hardness | 183 HB max |
Physical properties
| Property | Metric | Imperial |
|---|---|---|
| Density | 7.75 g/cm³ | 0.280 lb/in³ |
| Magnetic response | Magnetic | — |
Available forms & specifications
| Form | Specification | Size range |
|---|---|---|
| Sheets, plates & coils | ASTM A240 / ASME SA240 | 0.3 mm – 6 mm |
| Seamless & welded pipe | ASTM A312 / ASME SA312 | 1/8" – 24" NB |
| Tubes | ASTM A213, A249, A269 | 1/8" – 24" NB |
| Bars & rods | ASTM A276, A479 | 3 mm – 500 mm |
| Flanges & forgings | ASTM A182 / ASME SA182 | 1/2" – 48" NB (larger on request) |
| Buttweld fittings | ASTM A403 / ASME SA403 | 1/2" – 48" NB |
| Fasteners | ASTM A193 / A194, F593 / F594 | M3 – M56 |
Corrosion & temperature resistance
Corrosion resistance rises with chromium, molybdenum and nitrogen: 304 handles general atmospheric and food-contact service, 316/317 add resistance to chlorides and pitting, 904L handles strong reducing acids, and stabilised 321/347 resist intergranular attack after welding or high-temperature exposure.
Applications
SS 410S: Refinery cladding, trays, furnace parts. Process piping, tanks and vessels, heat exchangers, food, dairy and pharmaceutical equipment, architectural work and general engineering.
SS 410S vs SS 410
| SS 410S | SS 410 | |
|---|---|---|
| UNS | S41008 | S41000 |
| Key property | Low-carbon, non-hardening 410 | Hardenable martensitic |
| Typical use | Refinery cladding, trays, furnace parts | Valve trim, pump shafts, cutlery, fasteners |
| Cr (wt %) | 11.5–13.5 | 11.5–13.5 |
| Ni (wt %) | ≤ 0.60 | ≤ 0.75 |
| Mo (wt %) | — | — |
| C (wt %) | ≤ 0.08 | 0.08–0.15 |
| Tensile / yield (min, MPa) | 415 / 205 | 450 / 205 |
Frequently asked questions
What is the UNS number of SS 410S?
SS 410S is designated UNS S41008 (W.Nr. 1.4000, EN X6Cr13).
What is SS 410S used for?
Low-carbon, non-hardening 410. Typical uses: refinery cladding, trays, furnace parts.
Is SS 410S magnetic?
Magnetic.
In which forms can I buy SS 410S from Rajkamal Metals?
Coils & Strips, Sheets & Plates, Pipes & Tubes, Round Bars & Rods, Structural Sections, Flanges, Buttweld Fittings, Socket Weld & Threaded Fittings, Fasteners, Ferrule / Instrumentation Fittings, Dairy Fittings, Dish Ends, SS Tanks, Custom Orders. Sizes as per standard; other sizes on request.
Do you supply a Mill Test Certificate with SS 410S?
Yes. Actual values are given in the Mill Test Certificate (EN 10204 3.1) supplied with each order.
What is the difference between SS 410S and SS 410?
SS 410S: low-carbon, non-hardening 410. SS 410: hardenable martensitic. See the comparison table on this page.
Last updated: 30 October 2026. Grade names identify the supply range; designations are not engineering equivalents. Availability, make, origin and documentation are confirmed at quotation.
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