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6d. Chemical compositions of stainless steels to BS EN 10269

Introduction

BS EN 10269 is the material standard for stainless and heat-resisting steels, a selection of low alloy steels and some nickel alloys for fasteners. The standard includes some elevated and sub-zero temperature mechanical properties and can be used for specifying fasteners for pressure purposes. Austenitic, martensitic and precipitation hardening stainless grades are included. Only the chemical composition of the stainless steels in the standard are listed in this article.

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The data given is not intended to replace that shown in individual standards to which reference should always be made.

BS EN 10269 chemical composition table

Designation Chemical composition (% by mass – max unless stated)
Steel name Steel number C Si Mn P max S max Al tot B Cr Mo Ni V Others
Steels for quenching and tempering
X22CrMoV12-1 1.4923 0.18/0.24 0.50 0.40/0.90 0.025 0.015 11.00/12.50 0.80/1.20 0.30/0.80 0.20/0.35
X12CrNiMoV12-3 1.4938 0.08/0.15 0.50 0.40/0.90 0.025 0.015 11.00/12.50 1.50/2.00 2.00/3.00 0.25/0.40 N 0.020/0.040
X19CrMoNbVN11-1 1.4913 0.17/0.23 0.50 0.40/0.90 0.025 0.015 0.020 0.0015 10.00/11.50 0.50/0.80 0.20/0.60 0.10/0.30 N 0.25/0.55: N 0.05/0.10
Austenitic steels
X2CrNi18-9 1.4307 0.030 1.00 2.00 0.045 0.030 17.50/19.50 8.00/10.00 N 0.11
X5CrNi18-10 1.4301 0.07 1.00 2.00 0.045 0.030 17.00/19.50 8.00/10.50 N 0.11
X4CrNi18-12 1.4303 0.06 1.00 2.00 0.045 0.030 17.00/19.00 11.00/13.00 N 0.11
X2CrNiMo17-12-2 1.4404 0.030 1.00 2.00 0.045 0.030 16.50/18.50 2.00/2.50 10.00/13.00 N 0.11
X5CrNiMo17-12-2 1.4401 0.07 1.00 2.00 0.045 0.030 16.50/18.50 2.00/2.50 10.00/13.00 N 0.11
X2CrNiMoN17-13-3 1.4429 0.030 1.00 2.00 0.045 0.030 16.50/18.50 2.50/3.00 11.00/14.00 N 0.12/0.22
X3CrNiCu18-9-4 1.4567 0.04 1.00 2.00 0.045 0.030 17.00/19.00 8.50/10.50 N 0.11: Cu 3.00/4.00
X6CrNi18-10 1.4948 0.04/0.08 1.00 2.00 0.035 0.015 17.00/19.00 8.00/11.00 N 0.11
X10CrNiMoMnNbVB15-10-1 1.4982 0.07/0.13 1.00 5.50/7.00 0.040 0.030 0.003/0.009 14.00/16.00 0.80/1.20 9.00/11.00 0.15/0.40 N 0.11: Nb 0.75/1.25
X3CrNiMoBN17-13-3 1.4910 0.04 0.75 2.00 0.035 0.015 0.0015/0.0050 16.00/18.00 2.00/3.00 12.00/14.00 N 0.10/0.18
X6CrNiMoB17-12-2 1.4919 0.04/0.08 1.00 2.00 0.035 0.015 0.0015/0.0050 16.50/18.50 2.00/2.50 10.00/13.00 N 0.11
X6CrNiTiB18-10 1.4941 0.04/0.08 1.00 2.00 0.035 0.015 0.0015/0.0050 17.00/19.00 9.00/12.00 Ti 5 x C/0.80
X6NiCrTiMoVB25-15-2 1.4980 0.03/0.08 1.00 1.00/2.00 0.025 0.015 0.35 0.0030/0.010 13.50/16.00 1.00/1.50 24.00/27.00 0.10/0.50 Ti 1.90/2.30
X7CrNiMoBNb16-16 1.4986 0.04/0.10 0.30/0.60 1.00 0.045 0.030 0.05/0.10 15.50/17.50 1.60/2.00 15.50/17.50 Nb+Ta 10xC/1.20

Note
Al tot – total aluminium

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