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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