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.
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