Chemical composition of heat resisting steels to BS EN 10095

Introduction

BS EN 10095 is the material standard for heat resisting steels and nickel alloys. The chemical composition of the common grades of stainless steel covered in the standard are listed. Ferritic, austenitic and austenitic-ferritic (duplex) grades are included.

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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 10095 chemical composition tables

Steel designation Chemical composition % by mass unless stated
Ferritic heat-resisting steels
Name Number C Si Mn P S Cr Al Ni N Others
X10CrAlSi7 1.4713 0.12 0.50/1.00 1.00 0.040 0.015 6.00/8.00 0.50/1.00      
X10CrAlSi13 1.4724 0.12 0.70/1.40 1.00 0.040 0.015 12.00/14.00 0.70/1.20 - - -
X10CrAlSi18 1.4742 0.12 0.70/1.40 1.00 0.040 0.015 17.00/19.00 0.70/1.20 - - -
X10CrAlSi25 1.4762 0.12 0.70/1.40 1.00 0.040 0.015 23.00/26.00 1.20/1.70 - - -
X18CrN28 1.4749 0.15/0.20 1.00 1.00 0.040 0.015 26.00/29.00 - - 0.15/0.25 -
X3CrAlTi18-2 1.4736 0.04 1.00 1.00 0.040 0.015 17.00/18.00 1.70/2.10 - - 0.2 + 4(C + N) < Ti <0.80
Austenitic heat-resisting steels
X8CrNiTi18-10 1.4878 0.10 1.00 2.00 0.045 0.015 17.00/19.00 - 9.00/12.00 - Ti: 5 x % C < Ti < 0.80
X15CrNiSi20-12 1.4828 0.20 1.50/2.50 2.00 0.045 0.015 19.00/21.00 - 11.00/13.00 0.11 -
X9CrNiSiNCe21-11-2 1.4835 0.05/0.12 1.40/2.50 1.00 0.045 0.015 20.00/22.00 - 10.00/12.00 0.12/0.20 Ce: 0.03/0.08
X12CrNi23-13 1.4833 0.15 1.00 2.00 0.045 0.015 22.00/24.00 - 12.00/14.00 0.11 -
X8CrNi25-21 1.4845 0.10 1.50 2.00 0.045 0.015 24.00/26.00 - 19.00/22.00 0.11 -
X15CrNiSi25-21 1.4841 0.20 1.50/2.50 2.00 0.045 0.015 24.00/26.00 - 19.00/22.00 0.11 -
X12NiCrSi35-16 1.4864 0.15 1.00/2.00 2.00 0.045 0.015 15.00/17.00 - 33.00/37,00 0.11 -
X10NiCrAlTi32-21 1.4876 0.12 1.00 2.00 0.030 0.015 19.00/23.00 - 30.00/34.00 - Al: 0.15/0.60
Ti: 0.15/0.60
X6NiCrNbCe32-27 1.4877 0.04/0.08 0.30 1.00 0.020 0.010 26.00/28.00 - 31.00/33.00 0.11 Al: 0.025
Ce: 0.05/0.10
Nb: 0.60/1.00
X25CrMnNiN25-9-7 1.4872 0.20/0.30 1.00 8.00/10.00 0.045 0.015 24.00/26.00 - 6.00/8.00 0.20/0.40 -
X6CrNiSiNCe19-10 1.4818 0.04/0.08 1.00/2.00 1.00 0.045 0.015 18.00/20.00 - 9.00/11.00 0.12/0.20 Ce: 0.03/0.08
X6NiCrSiNCe35-25*) 1.4854 0.04/0.08 1.20/2.00 2.00 0.040 0.015 24.00/26.00 - 34.00/36.00 0.12/0.20 Ce: 0.03/0.08
X10NiCrSi35-19 1.4886 0.15 1.00/2.00 2.00 0.030 0.015 17.00/20.00 - 33.00/37.00 0.11 -
X10NiCrSiNb35-22 1.4887 0.15 1.00/2.00 2.00 0.030 0.015 20.00/23.00 - 33.00/37.00 0.11 Nb: 1.00/1.50
Austenitic-ferritic heat-resisting steel
X15CrNiSi25-4 1.4821 0.10/0.20 0.8/1.50 2.00 0.040 0.015 24.50/26.50 3.50/5.50 0.11 - -
Notes
Elements not listed in the table may not be intentionally added to the steel without the agreement of the purchaser except for finishing the cast. All appropriate precautions are to be taken to avoid addition of such elements from scrap and other materials used in production which would impair mechanical properties and the suitability of the steel.
*) Patented steel grade.

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