EN 10028-7 Chemical Composition of Stainless Steel Flat
EN 10028-7 is the material standard for stainless steel sheet, plate and strip for pressure purposes. The chemical composition of these stainless steel are shown in this article.
EN 10028-7:2007 Edition
EN 10028-7 was originally published in 2000. The second, current version, EN 10028-7:2007, has superseded EN 10028-7:2000, which was withdrawn by BSi on 31st January 2008. The tables shown here only have the 2005 composition ranges.
The grades are taken mostly from EN 10088-2 with some grades from creep resisting standard EN 10302. The distinction between standard and special grades in EN 10088-2 is not followed through into this standard. The following tables preserve the listing in the standard which is not in grade number order.
EN 10028-7 chemical composition tables
| Designation |
Chemical composition % by mass max unless stated |
| Steel name |
Steel number |
C |
Si |
Mn |
P |
S |
N |
Cr |
Mo |
Ni |
Others |
| Ferritic stainless steels |
| X2CrNi12 |
1.4003 |
0.030 |
1.00 |
1.50 |
0.040 |
0.015 |
0.030 |
10.5
/12.5 |
- |
0.30
/1.00 |
- |
| X6CrNiTi12 |
1.4516 |
0.08 |
0.70 |
1.50 |
0.040 |
0.015 |
- |
10.5
/12.5 |
- |
0.50
/1.50 |
Ti:
0.05
/0.35 |
| X2CrTi17 |
1.4520 |
0.025 |
0.50 |
0.50 |
0.040 |
0.015 |
0.015 |
16.0
/18.0 |
- |
- |
Ti:
0.30
/0.60 |
| X3CrTi17 |
1.4510 |
0.05 |
1.00 |
1.00 |
0.040 |
0.015 |
- |
16.0
/18.0 |
- |
- |
Ti:
4(C+N)
+0.15
/0.80 |
| X2CrMoTi17-1 |
1.4513 |
0.025 |
1.00 |
1.00 |
0.040 |
0.015 |
0.015 |
16.0
/18.0 |
0.80
/1.40 |
- |
Ti:
0.30
/0.60 |
| X2CrMoTi18-2 |
1.4521 |
0.025 |
1.00 |
1.00 |
0.040 |
0.015 |
0.030 |
17.0
/20.0 |
1.80
/2.50 |
- |
Ti:
4(C+N)+
0.15/0.80 |
| X6CrMoNb17-1 |
1.4526 |
0.08 |
1.00 |
1.00 |
0.040 |
0.015 |
0.040 |
16.0
/18.0 |
0.80
/1.40 |
- |
Nb:
7(C+N)+
0.10
/1.00 |
| X2CrTiNb18 |
1.4509 |
0.030 |
1.00 |
1.00 |
0.040 |
0.015 |
- |
17.5
/18.5 |
- |
- |
Ti:
0.10
/0.60
Nb:
3C+0.30
/1.00 |
| Martensitic stainless steels |
| X3CrNiMo13-4 |
1.4313 |
0.05 |
0.70 |
1.50 |
0.040 |
0.015 |
>
0.020 |
12.0
/14.0 |
0.30
/0.70 |
3.5
/4.5 |
|
| X4CrNiMo16-5-1 |
1.4418 |
0.06 |
0.70 |
1.50 |
0.040 |
0.015 |
>
0.020 |
15.0
/17.0 |
0.80
/1.50 |
4.0
/6.0 |
|
| Austenitic stainless steels |
| X2CrNiN18-7 |
1.4318 |
0.030 |
1.00 |
2.00 |
0.045 |
0.015 |
0.10
/0.20 |
16.5
/18.5 |
- |
6.0
/8.0 |
- |
| X2CrNi18-9 |
1.4307 |
0.030 |
1.00 |
2.00 |
0.045 |
0.015 |
0.11 |
17.5
/19.5 |
- |
8.0
/10.5 |
- |
| X2CrNi19-11 |
1.4306 |
0.030 |
1.00 |
2.00 |
0.045 |
0.015 |
0.11 |
18.0
/20.0 |
- |
10.0
/12.0 |
- |
| X5CrNiN19-9 |
1.4315 |
0.06 |
1.00 |
2.00 |
0.045 |
0.015 |
0.12
/0.22 |
18.0
/20.0 |
- |
8.0
/11.0 |
- |
| X2CrNiN18-10 |
1.4311 |
0.030 |
1.00 |
2.00 |
0.045 |
0.015 |
0.12
/0.22 |
17.5
/19.5 |
- |
8.5
/11.5 |
- |
| X5CrNi18-10 |
1.4301 |
0.07 |
1.00 |
2.00 |
0.045 |
0.015 |
0.11 |
17.5
/19.5 |
- |
8.0
/10.5 |
- |
| X6CrNiTi18-10 |
1.4541 |
0.08 |
1.00 |
2.00 |
0.045 |
0.015 |
- |
17.0
/19.0 |
- |
9.0
/12.0 |
Ti:
5C
/0.70 |
| X6CrNiNb18-10 |
1.4550 |
0.08 |
1.00 |
2.00 |
0.045 |
0.015 |
- |
17.0
/19.0 |
- |
9.0
/12.0 |
Nb:
10xC
/1.00 |
| X1CrNi25-21 |
1.4335 |
0.020 |
0.25 |
2.00 |
0.025 |
0.010 |
0.11 |
24.0
/26.0 |
0.20 |
20.0
/22.0 |
- |
| X2CrNiMo17-12-2 |
1.4404 |
0.030 |
1.00 |
2.00 |
0.045 |
0.015 |
0.11 |
16.5
/18.5 |
2.00
/2.50 |
10.0
/13.0 |
- |
| X2CrNiMoN17-11-2 |
1.4406 |
0.030 |
1.00 |
2.00 |
0.045 |
0.015 |
0.12
/0.22 |
16.5
/18.5 |
2.00
/2.50 |
10.0
/12.0 |
- |
| X5CrNiMo17-12-2 |
1.4401 |
0.07 |
1.00 |
2.00 |
0.045 |
0.015 |
0.11 |
16.5
/18.5 |
2.00
/2.50 |
10.0
/13.0 |
- |
| X1CrNiMoN25-22-2 |
1.4466 |
0.020 |
0.70 |
2.00 |
0.025 |
0.010 |
0.10
/0.16 |
24.0
/26.0 |
2.00
/2.50 |
21.0
/23.0 |
- |
| X6CrNiMoTi17-12-2 |
1.4571 |
0.08 |
1.00 |
2.00 |
0.045 |
0.015 |
- |
16.5
/18.5 |
2.00
/2.50 |
10.5
/13.5 |
Ti:
5C/0.70 |
| X6CrNiMoNb17-12-2 |
1.4580 |
0.08 |
1.00 |
2.00 |
0.045 |
0.015 |
- |
16.5
/18.5 |
2.00
/2.50 |
10.5
/13.5 |
Nb:
10xC
/1.00 |
| X2CrNiMo17-12-3 |
1.4432 |
0.030 |
1.00 |
2.00 |
0.045 |
0.015 |
0.11 |
16.5
/18.5 |
2.50
/3.00 |
10.5
/13.0 |
- |
| X2CrNiMoN17-3-3 |
1.4429 |
0.030 |
1.00 |
2.00 |
0.045 |
0.015 |
0.12
/0.22 |
16.5
/18.5 |
2.50
/3.00 |
11.0
/14.0 |
- |
| X3CrNiMo17-13-3 |
1.4436 |
0.05 |
1.00 |
2.00 |
0.045 |
0.015 |
0.11 |
16.5
/18.5 |
2.50
/3.00 |
10.5
/13.0 |
- |
| X2CrNiMo18-14-3 |
1.4435 |
0.030 |
1.00 |
2.00 |
0.045 |
0.015 |
0.11 |
17.0
/19.0 |
2.50
/3.00 |
12.5
/15.0 |
- |
| X2CrNiMoN18-12-4 |
1.4434 |
0.030 |
1.00 |
2.00 |
0.045 |
0.015 |
0.10
/0.20 |
16.5
/19.5 |
3.0
/4.0 |
10.5
/14.0 |
- |
| X2CrNiMo18-15-4 |
1.4438 |
0.030 |
1.00 |
2.00 |
0.045 |
0.015 |
0.11 |
17.5
/19.5 |
3.0
/4.0 |
13.0
/16.0 |
- |
| X2CrNiMoN17-13-5 |
1.4439 |
0.030 |
1.00 |
2.00 |
0.045 |
0.015 |
0.12
/0.22 |
16.5
/18.5 |
4.0
/5.0 |
12.5
/14.5 |
- |
| X1NiCrMo31-27-4 |
1.4563 |
0.020 |
0.70 |
2.00 |
0.030 |
0.010 |
0.11 |
26.0
/28.0 |
3.0
/4.0 |
30.0
/32.0 |
Cu:
0.70
/1.50 |
| X1NiCrMoCu25-20-5 |
1.4539 |
0.020 |
0.70 |
2.00 |
0.030 |
0.010 |
0.15 |
19.0
/21.0 |
4.0
/5.0 |
24.0
/26.0 |
Cu:
1.20
/2.00 |
| X1CrNiMoCuN25-25-5 |
1.4537 |
0.020 |
0.70 |
2.00 |
0.030 |
0.010 |
0.17
/0.25 |
24.0
/26.0 |
4.7
/5.7 |
24.0
/27.0 |
Cu:
1.00
/2.00 |
| X1CrNiMoCuN20-18-7 |
1.4547 |
0.020 |
0.70 |
1.00 |
0.030 |
0.010 |
0.18
/0.25 |
19.5
/20.5 |
6.0
/7.0 |
17.5
/18.5 |
Cu:
0.50
/1.00 |
| X1NiCrMoCuN25-20-7 |
1.4529 |
0.020 |
0.50 |
1.00 |
0.030 |
0.010 |
0.15
/0.25 |
19.0
/21.0 |
6.0
/7.0 |
24.0
/26.0 |
Cu:
0.50
/1.50 |
| Austenitic creep resisting steels |
| X3CrNiMoBN17-13-3 |
1.4910 |
0.4 |
0.75 |
2.00 |
0.035 |
0.015 |
0.10
/0.18 |
16.0
/18.0 |
2.00
/3.00 |
12.0
/14.0 |
B:
0.0015
/0.0050 |
| X6CrNiTiB18-10 |
1.4941 |
0.04
/0.08 |
1.00 |
2.00 |
0.035 |
0.015 |
- |
17.0
/19.0 |
- |
9.0
/12.0 |
Ti:
5xC
/ 0.80
B:0.0015
/0.0050 |
| X6CrNi18-10 |
1.4948 |
0.04
/0.08 |
1.00 |
2.00 |
0.035 |
0.015 |
0.10 |
17.0
/19.0 |
- |
8.0
/11.0 |
- |
| X6CrNi23-13 |
1.4950 |
0.04
/0.08 |
0.70 |
2.00 |
0.035 |
0.015 |
0.10 |
22.0
/24.0 |
- |
12.0
/15.0 |
- |
| X6CrNi25.20 |
1.4951 |
0.04
/0.08 |
0.70 |
2.00 |
0.035 |
0.015 |
0.10 |
24.0
/26.0 |
- |
19.0
/22.0 |
- |
| X5NiCrAlTi31-20 |
1.4958 (+RA) |
0.03
/0.08 |
0.70 |
1.50 |
0.015 |
0.010 |
0.030 |
19.0
/22.0 |
- |
30.0
/32.5 |
Cu: 0.50
Nb:0.10
Ti:
0.20/0.50
Al:
0.20/0.50
Al+Ti:0.70
Co: 0.50
Ni+Co:
30.0/32.5 |
| X8NiCrAlTi32-21 |
1.4959 |
0.05
/0.10 |
0.70 |
1.50 |
0.015 |
0.010 |
0.030 |
19.0
/22.0 |
- |
30.0
/34.0 |
Cu:
0.50
Ti:
0.20/
0.65
Al:
0.20
/0.65
Co:
0.50
Ni+Co:
30.0
/34.0 |
| X8CrNiNb16-13 |
1.4961 |
0.04
/0.10 |
0.30/
0.60 |
1.50 |
0.035 |
0.015 |
- |
15.0
/17.0 |
- |
12.0
/14.0 |
Nb:
10xC
/1.20 |
| Austenitic-ferritic stainless steels |
| X2CrNiN23-4 |
1.4362 |
0.030 |
1.00 |
2.00 |
0.035 |
0.015 |
0.05
/0.20 |
22.0
/24.0 |
0.10
/0.60 |
3.5
/5.5 |
Cu
0.10
/0.60 |
| X2CrNiMoN12-5-3 |
1.4462 |
0.030 |
1.00 |
2.00 |
0.035 |
0.015 |
0.10
/0.22 |
21.0
/23.0 |
2.50
/3.50 |
4.5
/6.5 |
- |
| X2CrNiMoCuN25-6-3 |
1.4507 |
0.030 |
0.70 |
2.00 |
0.035 |
0.015 |
0.20
/0.30 |
24.0
/26.0 |
3.0
/4.0 |
6.0
/8.0 |
Cu:
1.00
/2.50 |
| X2CrNiMoN25-7-4 |
1.4410 |
0.030 |
1.00 |
2.00 |
0.035 |
0.015 |
0.24
/0.35 |
24.0
/26.0 |
3.0
/4.5 |
6.0
/8.0 |
- |
| X2CrNiMoCuWN25-7-4 |
1.4501 |
0.030 |
1.00 |
1.00 |
0.035 |
0.015 |
0.20
/0.30 |
24.0
/26.0 |
3.0
/4.0 |
6.0
/8.0 |
Cu:
0.50
/1.00
W:
0.50
/1.00 |
Permissible product analysis tolerances on the cast analysis ranges given in EN 10028-7
| Element |
Specified Limits on Cast Analysis (%) |
Permissible tolerance on product analysis (%) |
| Carbon |
|
< 0.030 |
+0.005 |
| > 0.030 |
< 0.10 |
±0.01 |
| Silicon |
|
< 1.00 |
±0.05 |
| Manganese |
|
< 1.00 |
+0.03 |
| > 1.00 |
< 2.00 |
±0.04 |
| Phosphorus |
|
< 0.045 |
+0.005 |
| Sulphur |
|
< 0.015 |
+0.003 |
| Nitrogen |
|
< 0.35 |
±0.01 |
| Aluminium |
|
< 0.65 |
±0.10 |
| Boron |
> 0.0015 |
< 0.0050 |
±0.0003 |
| Chromium |
> 10.5 |
< 15.0 |
±0.15 |
| > 15.0 |
< 20.0 |
±0.20 |
| > 20.0 |
< 28.0 |
±0.25 |
| Copper |
|
< 1.00 |
±0.07 |
| > 1.00 |
< 2.50 |
±0.10 |
| Molybdenum |
|
<0.60 |
±0.03 |
| > 0.60 |
< 1.75 |
±0.05 |
| > 1.75 |
< 7.0 |
±0.10 |
| Niobium |
|
< 1.20 |
±0.05 |
| Nickel |
|
< 1.00 |
±0.03 |
| > 1.00 |
< 5.0 |
±0.07 |
| > 5.0 |
< 10.0 |
±0.10 |
| > 10.0 |
< 20.0 |
±0.15 |
| > 20.0 |
< 34.0 |
±0.20 |
| Cobalt |
|
< 0.50 |
±0.05 |
| Titanium |
|
< 0.80 |
±0.05 |
| Tungsten |
|
< 2.50 |
±0.05 |
| Vanadium |
|
< 0.20 |
±0.03 |
Related References:
1. EN 10028 - Stainless Steel Flat Products Made of Steel for Pressure Purpose
2. EN 10028-7 Chemical Composition of Stainless Steel Flat
3. EN 10028-7 Mechanical Properties for Stainless Steel
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