Ambient temperature mechanical properties of creep resisting steels to BS EN 10302

Introduction

EN 10302 is the European standard covering a wide range of creep resisting steels. Some of these can also be classified as stainless steels. This article summarises the mechanical properties of these steels.

BS EN 10302:2008

The latest edition of the standard was published in 2008.

Steel Grade Heat treatment

Rp0.2

MPa

Rm

MPa

A% minimum
Steel Name Steel Number Long Products Flat Products

0.5 < a < 3

l, tr 

3 < a

tr

Martensitic steels
X10CrMoVNb9-1 1.4903 +QT 450 620/850 20 - -
X11CrMoWVNb9-1-1 1.4905 +QT 450 620/850 19 - -
X8CrCoNiMo10-6 1.4911 +QT 850 1000/1140 10 - -
X19CrMoNbVN11-1 1.4913 +QT (d<160) 750 900/1050 12 - -
X20CrMoV11-1 1.4922 +QT 500 700/850 16   15
X22CrMoV12-1 1.4923 +QT (d<160) 600 800/950 14   14
X20CrMoWV12-1 1.4935 +QT 700 500 700/850 16   15
+QT 800 600 800/950 14   -
X12CrNiMoV12-3 1.4938 +QT (d<160) 760 930/1130 14   14
Austenitic steels
X3CrNiMoBN17-13-3 1.4910 +AT (d<160) 260 550/750 35 35 
X6CrNiMoB17-12-2 1.4919 +AT (d<160) 205 490/690 35  30  35 
X6CrNiTiB18-10 1.4941 +AT (d<160) 195 490/680 35  30  35 
X6CrNiWNbN16-16 1.4945 +AT 250 540/740 30  30 
+WW (warm worked) (d < 60) 490 630/840 17 - -
X6CrNi25-20 1.4951 +AT 200 510/710  35 35  35 
X5NiCrAlTi31-20 1.4958 +AT (d<160) 170 500/750  35  30  30 
+RA 210 500/750 35 30 30
X8NiCrAlTi32-21 1.4959 +AT (d<160) 170 500/750  35 30  30 
X8CrNiNb16-13 1.4961 +AT 200 510/690  35 30  35 
X12CrNiWTiB16-13 1.4962  +AT 230 500/750 30 30 
+WW (warm worked) (d < 60) 440 590/790 20 - -
X12CrCoNi21-20 1.4971 +AT 300 690/900  30 35 
X6NiCrTiMoVB25-15-2 1.4980 +P (d<160) 600 900/1150  15 15 
X8CrNiMoNb16-16 1.4981 +AT 215  530/690  35 35 
X6CrNiMoTiB17-13 1.4983 +AT 205  530/730  35 30  35 
X8CrNiMoVNb16-13 1.4988 +P 255  540/740  30 30 

The abbreviations in this table are:

+QT = Quench and Tempered

+AT = Solution Annealed

+P = Precipitation Hardened

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