Stainless steel / UNS S41000
410 is the basic 12% chromium martensitic stainless steel. It can be hardened by heat treatment and offers moderate corrosion resistance with good strength and wear resistance.
- UNS S41000
- W.Nr. 1.4006
- Spec ASTM A240
- Density 7.75 g/cm³
Also known as / equivalents
| System | Designation |
|---|---|
| UNS | S41000 |
| W.Nr. | 1.4006 |
| EN | X12Cr13 |
| JIS | SUS410 |
| Also known as | AISI 410, 1.4006, SUS410 |
Chemical composition
| Element | Min % | Max % |
|---|---|---|
| C | 0.08 | 0.15 |
| Mn | — | 1.00 |
| P | — | 0.040 |
| S | — | 0.030 |
| Si | — | 1.00 |
| Cr | 11.5 | 13.5 |
| Ni | — | 0.75 |
| Fe | Bal. | — |
Mechanical properties
| Property | Value |
|---|---|
| Tensile strength (min) | 450 MPa (65.3 ksi) |
| Yield strength, 0.2% offset (min) | 205 MPa (29.7 ksi) |
| Elongation in 50 mm (min) | 20 % |
| Hardness | 217 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 410: Valve trim, pump shafts, cutlery, fasteners. Process piping, tanks and vessels, heat exchangers, food, dairy and pharmaceutical equipment, architectural work and general engineering.
SS 410 vs SS 420
| SS 410 | SS 420 | |
|---|---|---|
| UNS | S41000 | S42000 |
| Key property | Hardenable martensitic | High hardness after heat treatment |
| Typical use | Valve trim, pump shafts, cutlery, fasteners | Cutlery, surgical tools, moulds, shafts |
| Cr (wt %) | 11.5–13.5 | 12.0–14.0 |
| Ni (wt %) | ≤ 0.75 | — |
| Mo (wt %) | — | — |
| C (wt %) | 0.08–0.15 | 0.15 |
| Tensile / yield (min, MPa) | 450 / 205 | — |
Frequently asked questions
What is the UNS number of SS 410?
SS 410 is designated UNS S41000 (W.Nr. 1.4006, EN X12Cr13).
What is SS 410 used for?
Hardenable martensitic. Typical uses: valve trim, pump shafts, cutlery, fasteners.
Is SS 410 magnetic?
Magnetic.
In which forms can I buy SS 410 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 410?
Yes. Actual values are given in the Mill Test Certificate (EN 10204 3.1) supplied with each order.
What is the difference between SS 410 and SS 420?
SS 410: hardenable martensitic. SS 420: high hardness after heat treatment. 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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