Stainless Steel Grades
Chemistry, strength, equivalents and uses of every grade we supply.
| Grade | Family | UNS | EN | JIS | Cr % | Ni % | Mo % | Tensile / Yield (MPa) |
|---|---|---|---|---|---|---|---|---|
| SS 304 | Austenitic (300 series) | S30400 | 1.4301 | SUS 304 | 17.5 – 19.5 | 8.0 – 10.5 | — | 515 / 205 |
| SS 304L | Austenitic (300 series) | S30403 | 1.4307 | SUS 304L | 17.5 – 19.5 | 8.0 – 12.0 | — | 485 / 170 |
| SS 316 | Austenitic (300 series) | S31600 | 1.4401 | SUS 316 | 16.0 – 18.0 | 10.0 – 14.0 | 2.00 – 3.00 | 515 / 205 |
| SS 316L | Austenitic (300 series) | S31603 | 1.4404 | SUS 316L | 16.0 – 18.0 | 10.0 – 14.0 | 2.00 – 3.00 | 485 / 170 |
| SS 202 | Austenitic (200 series) | S20200 | 1.4373 | SUS 202 | 17.0 – 19.0 | 4.0 – 6.0 | — | 620 / 260 |
| SS 201 | Austenitic (200 series) | S20100 | 1.4372 | SUS 201 | 16.0 – 18.0 | 3.5 – 5.5 | — | 515 / 260 |
| SS 310S | Austenitic heat-resistant | S31008 | 1.4845 | SUS 310S | 24.0 – 26.0 | 19.0 – 22.0 | — | 515 / 205 |
| SS 321 | Austenitic (titanium stabilised) | S32100 | 1.4541 | SUS 321 | 17.0 – 19.0 | 9.0 – 12.0 | — | 515 / 205 |
| SS 410 | Martensitic (400 series) | S41000 | 1.4006 | SUS 410 | 11.5 – 13.5 | 0.75 max | — | 450 / 205 |
| SS 430 | Ferritic (400 series) | S43000 | 1.4016 | SUS 430 | 16.0 – 18.0 | 0.75 max | — | 450 / 205 |
| SS 904L | Super-austenitic | N08904 | 1.4539 | SUS 890L | 19.0 – 23.0 | 23.0 – 28.0 | 4.0 – 5.0 | 490 / 220 |
| Duplex 2205 | Duplex (austenitic-ferritic) | S32205 / S31803 | 1.4462 | SUS 329J3L | 22.0 – 23.0 | 4.5 – 6.5 | 3.0 – 3.5 | 655 / 450 |
The most popular stainless steel — "18/8". Excellent corrosion resistance, easy to weld and form, non-magnetic in the annealed condition.
Full details SS 304LAustenitic (300 series)Low-carbon version of 304. Resists intergranular corrosion after welding, so it is preferred for welded tanks and thick sections.
Full details SS 316Austenitic (300 series)Molybdenum-bearing "marine grade" stainless with much better resistance to chlorides, acids and pitting than 304.
Full details SS 316LAustenitic (300 series)Low-carbon 316 — the standard grade for pharma, biotech and welded chemical equipment.
Full details SS 202Austenitic (200 series)A lower-nickel, manganese-bearing grade that costs less than 304. Good for indoor and decorative use.
Full details SS 201Austenitic (200 series)Economical low-nickel grade used for utensils, appliances and indoor items where cost matters most.
Full details SS 310SAustenitic heat-resistantHigh-chromium, high-nickel heat-resistant grade for service up to about 1100 °C.
Full details SS 321Austenitic (titanium stabilised)Titanium-stabilised 304 that resists intergranular corrosion at 425 – 815 °C. Used for exhausts and high-temperature service.
Full details SS 410Martensitic (400 series)Hardenable 12% chromium stainless with good strength and wear resistance. Magnetic.
Full details SS 430Ferritic (400 series)Nickel-free ferritic stainless with good indoor corrosion resistance and a bright finish. Magnetic and economical.
Full details SS 904LSuper-austeniticHigh-alloy super-austenitic grade with copper and molybdenum for sulphuric acid and severe chloride environments.
Full details Duplex 2205Duplex (austenitic-ferritic)Duplex stainless with about twice the yield strength of 316L and excellent resistance to chloride stress-corrosion cracking.
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