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E: ssas@bssa.org.uk
E: ssas@bssa.org.uk
BS EN 10283 is the material standard for stainless steel castings for corrosion resisting purposes. Martensitic, precipitation hardening, austenitic and austenitic-ferritic (duplex) grades are included. The chemical composition of all the grades of stainless steel covered in the standard are listed.
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The data given is not intended to replace that shown in individual standards to which reference should always be made.
| Designation | Chemical composition % by mass (max unless otherwise stated) | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Steel name | Steel number | C | Si | Mn | P | S | Cr | Mo | Ni | N | Cu | Nb1) | W | V |
| Martensitic grades | ||||||||||||||
| GX12Cr12 | 1.4011 | 0.15 | 1.00 | 1.00 | 0.035 | 0.025 | 11.50/13.50 | 0.50 | 1.00 | – | 0.30 | – | – | 0.08 |
| GX7CrNiMo12-1 | 1.4008 | 0.10 | 1.00 | 1.00 | 0.035 | 0.025 | 12.00/13.50 | 0.20/0.50 | 1.00/2.00 | – | 0.30 | – | – | 0.08 |
| GX4CrNi13-4 | 1.4317 | 0.06 | 1.00 | 1.00 | 0.035 | 0.025 | 12.00/13.50 | 0.70 | 3.50/5.00 | – | 0.30 | – | – | 0.08 |
| GX4CrNiMo16-5-1 | 1.4405 | 0.06 | 0.80 | 1.00 | 0.035 | 0.025 | 15.00/17.00 | 0.70/1.50 | 4.00/6.00 | – | 0.30 | – | – | 0.08 |
| GX4CrNiMo16-5-2 | 1.4411 | 0.06 | 0.80 | 1.00 | 0.035 | 0.025 | 15.00/17.00 | 1.50/2.00 | 4.00/6.00 | – | 0.30 | – | – | 0.08 |
| GX5CrNiCu16-4 | 1.4525 | 0.07 | 0.80 | 1.00 | 0.035 | 0.025 | 15.00/17.00 | 0.80 | 3.50/5.50 | 0.05 | 2.50/4.00 | 0.35 | – | 0.08 |
| Austenitic grades | ||||||||||||||
| GX2CrNi19-11 | 1.4309 | 0.030 | 1.50 | 2.00 | 0.035 | 0.025 | 18.00/20.00 | – | 9.00/12.00 | 0.20 | 0.50 | – | – | – |
| GX5CrNi19-10 | 1.4308 | 0.07 | 1.50 | 1.50 | 0.040 | 0.030 | 18.00/20.00 | – | 8.00/11.00 | – | 0.50 | – | – | – |
| GX5CrNiNb19-11 | 1.4552 | 0.07 | 1.50 | 1.50 | 0.040 | 0.030 | 18.00/20.00 | – | 9.00/12.00 | – | 0.50 | 8xC/1.00 | – | – |
| GX2CrNiMo19-11-2 | 1.4409 | 0.030 | 1.50 | 2.00 | 0.035 | 0.025 | 18.00/20.00 | 2.00/2.50 | 9.00/12.00 | 0.20 | 0.50 | – | – | – |
| GX5CrNiMo19-11-2 | 1.4408 | 0.07 | 1.50 | 1.50 | 0.040 | 0.030 | 18.00/20.00 | 2.00/2.50 | 9.00/12.00 | – | 0.50 | – | – | – |
| GX5CrNiMoNb19-11-2 | 1.4581 | 0.07 | 1.50 | 1.50 | 0.040 | 0.030 | 18.00/20.00 | 2.00/2.50 | 9.00/12.00 | – | 0.50 | 8xC/1.00 | – | – |
| GX5CrNiMo19-11-3 | 1.4412 | 0.07 | 1.50 | 1.50 | 0.040 | 0.030 | 18.00/20.00 | 3.00/3.50 | 10.00/13.00 | – | 0.50 | – | – | – |
| GX2CrNiMoN17-13-4 | 1.4446 | 0.030 | 1.00 | 1.50 | 0.040 | 0.030 | 16.50/18.50 | 4.00/4.50 | 12.50/14.50 | 0.12/0.22 | 0.50 | – | – | – |
| Fully austenitic grades | ||||||||||||||
| GX2NiCrMo28-20-2 | 1.4458 | 0.030 | 1.00 | 2.00 | 0.035 | 0.025 | 19.00/22.00 | 2.00/2.50 | 26.00/30.00 | 0.20 | 2.00 | – | – | – |
| GX4NiCrCuMo30-20-4 | 1.4527 | 0.06 | 1.50 | 1.50 | 0.040 | 0.030 | 19.00/22.00 | 2.00/3.00 | 27.50/30.50 | – | 3.00/4.00 | – | – | – |
| GX2NiCrMoCu25-20-5 | 1.4584 | 0.025 | 1.00 | 2.00 | 0.035 | 0.020 | 19.00/21.00 | 4.00/5.00 | 24.00/26.00 | 0.20 | 1.00/3.00 | – | – | – |
| GX2NiCrMoN25-20-5 | 1.4416 | 0.030 | 1.00 | 1.00 | 0.035 | 0.020 | 19.00/21.00 | 4.50/5.50 | 24.00/26.00 | 0.12/0.20 | 0.50 | – | – | – |
| GX2NiCrMoCuN29-25-5 | 1.4587 | 0.030 | 1.00 | 2.00 | 0.035 | 0.025 | 24.00/26.00 | 4.00/5.00 | 28.00/30.00 | 0.15/0.25 | 2.00/3.00 | – | – | – |
| GX2NiCrMoCuN25-20-6 | 1.4588 | 0.025 | 1.00 | 2.00 | 0.035 | 0.020 | 19.00/21.00 | 6.00/7.00 | 24.00/26.00 | 0.10/0.25 | 0.50/1.50 | – | – | – |
| GX2CrNiMoCuN20-18-6 | 1.4593 | 0.025 | 1.00 | 1.20 | 0.030 | 0.010 | 19.50/20.50 | 6.00/7.00 | 17.50/19.50 | 0.18/0.24 | 0.50/1.00 | – | – | – |
| Austenitic-ferritic grades | ||||||||||||||
| GX6CrNiN26-7 | 1.4347 | 0.08 | 1.50 | 1.50 | 0.035 | 0.020 | 25.00/27.00 | – | 5.50/7.50 | 0.10/0.20 | 0.50 | – | – | – |
| GX2CrNiMoN22-5-3 | 1.4470 | 0.030 | 1.00 | 2.00 | 0.035 | 0.025 | 21.00/23.00 | 2.50/3.50 | 4.50/6.50 | 0.12/0.20 | 0.50 | – | – | – |
| GX2CrNiMoN25-6-3 | 1.4468 | 0.030 | 1.00 | 2.00 | 0.035 | 0.025 | 24.50/26.50 | 2.50/3.50 | 5.50/7.00 | 0.12/0.25 | 0.50 | – | – | – |
| GX2CrNiMoCuN25-6-3-3 | 1.4517 | 0.030 | 1.00 | 1.50 | 0.035 | 0.025 | 24.50/26.50 | 2.50/3.50 | 5.00/7.00 | 0.12/0.22 | 2.75/3.50 | – | – | – |
| GX2CrNiMoN25-7-3 | 1.4417 | 0.030 | 1.00 | 1.50 | 0.030 | 0.020 | 24.00/26.00 | 3.00/4.00 | 6.00/8.50 | 0.15/0.25 | 1.00 | – | 1.00 | – |
| GX2CrNiMoN26-7-4 | 1.4469 | 0.030 | 1.00 | 1.00 | 0.035 | 0.025 | 25.00/27.00 | 3.00/5.00 | 6.00/8.00 | 0.12/0.22 | 1.30 | – | – | – |
Note 1 The niobium content value applies for the sum of the niobium + tantalum.