Chemical Compositions of Stainless Steel to EN 10297-2
EN 10297-2 is the material standard for heat-resisting stainless steel for seamless tubes for mechanical and general engineering purposes. This new standard was first published in December 2005. It does not replace any previous British Standards, unlike the counterpart welded tube standard EN 10296-2, which replaced BS 6323-8:1982.
Included in the standard are chemical composition, delivery conditions, ambient temperature mechanical properties, some additional optional tests (leak testing, hydrostatic testing and a range of non-destructive test options including eddy current and ultrasonic test methods) and some dimensional and tolerance requirements.
Ferritic (4), one martensitic (1.4006), austenitic (22), austenitic-ferritic (duplex) (8) stainless steel and one ferritic (1.4749) and austenitic (6) heat resisting grades are included in the range of grades specified in this standard. Only the chemical composition of the stainless steel in the standard are listed in this article.
EN 10297-2 chemical composition tables
Corrosion resistant steel
| Designation |
Chemical composition (% by mass - max unless stated) |
| Steel name |
Steel No. |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
Ni |
Cu |
N |
Ti |
Others |
| Ferritic steels |
| X2CrTi12 |
1.4512 |
0.03 |
1.00 |
1.00 |
0.040 |
0.015 |
10.5
/12.5 |
- |
- |
- |
0.030 |
6x(C+N)
/0.65 |
|
| X6CrAl13 |
1.4002 |
0.08 |
1.00 |
1.00 |
0.040 |
0.015 |
12.0
/14.0 |
- |
- |
- |
- |
- |
Al: 0.10
/0.30 |
| X6Cr17 |
1.4016 |
0.08 |
1.00 |
1.00 |
0.040 |
0.015 |
16.0
/18.0 |
- |
- |
- |
- |
- |
- |
| X3CrTi17 |
1.4510 |
0.05 |
1.00 |
1.00 |
0.040 |
0.015 |
16.0
/18.0 |
- |
- |
- |
- |
4x
(C+N)+
0.15/
0.80 |
|
| Martensitic steel |
| X12Cr13 |
1.4006 |
0.08
/0.15 |
1.00 |
1.50 |
0.040 |
0.015 |
11.5
/13.5 |
0.75 |
- |
- |
- |
- |
- |
| Austenitic steel |
| X2CrNi18-9 |
1.4307 |
0.03 |
1.00 |
2.00 |
0.045 |
0.015 |
17.5
/19.5 |
- |
8.0
/10.5 |
- |
0.11 |
- |
- |
| X2CrNi19-11 |
1.4306 |
0.03 |
1.00 |
2.00 |
0.045 |
0.015 |
18.0
/20.0 |
- |
10.0
/12.0 |
- |
0.11 |
- |
- |
| X2CrNiN18-10 |
1.4311 |
0.03 |
1.00 |
2.00 |
0.045 |
0.015 |
17.0
/19.5 |
- |
8.5
/11.5 |
- |
0.12
/0.22 |
- |
- |
| X5CrNi18-10 |
1.4301 |
0.07 |
1.00 |
2.00 |
0.045 |
0.015 |
17.0
/19.5 |
- |
8.0
/10.5 |
- |
0.11 |
- |
- |
| X8CrNiS18-9 |
1.4305 |
0.10 |
1.00 |
2.00 |
0.045 |
0.15
/0.35 |
17.0
/19.0 |
- |
8.0
/10.0 |
1.00 |
0.11 |
- |
- |
| X6CrNiTi18-10 |
1.4541 |
0.08 |
1.00 |
2.00 |
0.045 |
0.015 |
17.0
/19.0 |
- |
9.0
/12.0 |
- |
- |
5xC
/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: 10x
C
/1.00 |
| X1CrNi25-21 |
1.4335 |
0.02 |
0.25 |
2.00 |
0.025 |
0.010 |
24.0
/26.0 |
0.20 |
20.0
/22.0 |
- |
0.11 |
- |
- |
X2CrNiMo
17-12-2 |
1.4404 |
0.03 |
1.00 |
2.00 |
0.045 |
0.015 |
16.5
/18.5 |
2.00
/2.50 |
10.0
/14.5 |
- |
0.11 |
- |
- |
X5CrNiMo
17-12-2 |
1.4401 |
0.07 |
1.00 |
2.00 |
0.045 |
0.015 |
16.5
/18.5 |
2.00
/2.50 |
10.0
/13.0 |
- |
0.11 |
- |
- |
X1CrNiMo
N25-22-2 |
1.4466 |
0.02 |
0.70 |
2.00 |
0.025 |
0.010 |
24.0
/26.0 |
2.00
/2.50 |
21.0
/23.0 |
- |
0.10
/0.16 |
- |
- |
XCrNiMo
Ti17-12-2 |
1.4571 |
0.08 |
1.00 |
2.00 |
0.045 |
0.015 |
16.5
/18.5 |
2.00
/2.50 |
10.5
/14.0 |
- |
- |
5xC
/0.70 |
|
X6CrNiMo
Nb17-12-3 |
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 |
X2CrNiMo
N17-13-3 |
1.4429 |
0.03 |
1.00 |
2.00 |
0.045 |
0.015 |
16.5
/18.5 |
2.50
/3.00 |
11.0
/15.0 |
- |
0.12
/0.22 |
- |
- |
X3CrNiMo
17-13-3 |
1.4436 |
0.05 |
1.00 |
2.00 |
0.045 |
0.015 |
16.5
/18.5 |
2.50
/3.00 |
10.5
/14.0 |
- |
0.11 |
- |
- |
X2CrNiMo
18-14-3 |
1.4435 |
0.03 |
1.00 |
2.00 |
0.045 |
0.015 |
17.0
/19.0 |
2.50
/3.00 |
12.5
/15.0 |
- |
0.11 |
- |
- |
X2CrNiMo
N17-13-5 |
1.4439 |
0.03 |
1.00 |
2.00 |
0.045 |
0.015 |
16.5
/18.5 |
4.0
/5.0 |
12.5
/14.5 |
- |
0.12
/0.22 |
- |
- |
X1NiCrMo
CuCu31-27-4 |
1.4563 |
0.02 |
0.70 |
2.00 |
0.030 |
0.010 |
26.0
/28.0 |
3.0
/4.0 |
30.0
/32.0 |
0.70
/1.50 |
0.11 |
- |
- |
X1NiCrMo
Cu25-20-5 |
1.4539 |
0.02 |
0.70 |
2.00 |
0.030 |
0.010 |
19.0
/21.0 |
4.0
/5.0 |
24.0
/26.0 |
1.20
/2.00 |
0.15 |
- |
- |
X1CrNiMo
CuN20-18-7 |
1.4547 |
0.02 |
0.70 |
1.00 |
0.030 |
0.010 |
19.5
/20.5 |
6.0
/7.0 |
17.5
/18.5 |
0.50
/1.00 |
0.18
/0.25 |
- |
- |
X1NiCrMo
CuN25-20-7 |
1.4529 |
0.02 |
0.50 |
1.00 |
0.030 |
0.010 |
19.0
/21.0 |
6.0
/7.0 |
24.0
/26.0 |
0.50
/1.50 |
0.15
/0.25 |
- |
- |
X2NiCrAl
Ti32-20 |
1.4558 |
0.03 |
0.70 |
1.00 |
0.020 |
0.015 |
20.0
/23.0 |
- |
32.0
/35.0 |
- |
- |
8xC/0.60 |
Al:
0.15
/0.45 |
| Austenitic ferritic steels |
| X2CrNiN23-4 |
1.4362 |
0.03 |
1.00 |
2.00 |
0.035 |
0.015 |
22.0
/24.0 |
0.10
/0.60 |
3.5
/5.5 |
0.10
/0.60 |
0.05
/0.20 |
- |
- |
X3CrNiMo
N27-5-2 |
1.4460 |
0.05 |
1.00 |
2.00 |
0.035 |
0.015 |
25.0
/28.0 |
1.30
/2.00 |
4.5
/6.5 |
- |
0.05
/0.20 |
- |
- |
X2CrNiMo
N29-7-2 |
1.4477 |
0.03 |
0.50 |
0.80
/1.50 |
0.030 |
0.015 |
28.0
/30.0 |
1.50
/2.60 |
5.8
/7.5 |
- |
0.30
/0.40 |
- |
- |
X2CrNiMo
N22-5-3 |
1.4462 |
0.03 |
1.00 |
2.00 |
0.035 |
0.015 |
21.0
/23.0 |
2.50
/3.5 |
4.5
/6.5 |
- |
0.10
/0.22 |
- |
- |
X2CrNiMo
CuN25-6-3 |
1.4507 |
0.03 |
0.70 |
2.00 |
0.035 |
0.015 |
24.0
/26.0 |
2.7
/4.0 |
5.5
/7.5 |
1.00
/2.50 |
0.15
/0.30 |
- |
- |
X2CrNiMo
N25-7-4 |
1.4410 |
0.03 |
1.00 |
2.00 |
0.035 |
0.015 |
24.0
/26.0 |
3.0
/4.5 |
6.0
/8.0 |
- |
0.24
/0.35 |
- |
- |
X2CrNiMo
CuWN25-7-4 |
1.4501 |
0.03 |
1.00 |
1.00 |
0.035 |
0.015 |
24.0
/26.0 |
3.0
/4.0 |
6.0
/8.0 |
0.50
/1.00 |
0.20
/0.30 |
- |
W: 0.50
/1.00 |
X2CrNiMo
Si18-5-3 |
1.4424 |
0.03 |
1.40
/2.00 |
1.20
/2.00 |
0.035 |
0.015 |
18.0
/19.0 |
2.50
/3.00 |
4.5
/5.2 |
- |
0.05
/0.10 |
- |
- |
Heat resisting steel
| Designation |
Chemical composition (% by mass - max unless stated) |
| Steel name |
Steel number |
C |
Si |
Mn |
P |
S |
Cr |
Ni |
N |
Ti |
Others |
| Ferritic heat resisting steel |
| X18CrN28 |
1.4749 |
0.15
/0.20 |
1.00 |
1.00 |
0.040 |
0.015 |
26.0/29.0 |
- |
0.15/0.25 |
- |
- |
| Austenitic heat resisting steels |
| X8CrNiTi18-10 |
1.4878 |
0.10 |
1.00 |
2.00 |
0.045 |
0.015 |
17.0/19.0 |
9.0/12.0 |
- |
5xC
/0.80 |
- |
| X9CrNiSiNCe21-11-2 |
1.4835 |
0.05
/0.12 |
1.40
/2.50 |
1.00 |
0.045 |
0.015 |
20.0/22.0 |
10.0/12.0 |
0.12/0.20 |
- |
Ce:
0.03
/0.08 |
| X12CrNi23-13 |
1.4833 |
0.15 |
1.00 |
2.00 |
0.045 |
0.015 |
22.0/24.0 |
12.0/14.0 |
0.11 |
- |
- |
| X8CrNi25-21 |
1.4845 |
0.10 |
1.50 |
2.00 |
0.045 |
0.015 |
24.0/26.0 |
19.0/22.0 |
0.11 |
- |
- |
| X10NiCrAlTi32-21 |
1.4876 |
0.12 |
1.00 |
2.00 |
0.030 |
0.015 |
19.0/23.0 |
30.0/34.0 |
- |
0.15
/0.60 |
Al: 0.15
/0.60 |
| X6NiCrSiNCe35-25 |
1.4854 |
0.04
/0.08 |
1.20
/2.00 |
2.00 |
0.040 |
0.015 |
24.0/26.0 |
34.0/36.0 |
0.12/0.20 |
- |
Ce: 0.03
/0.08 |
Related References:
EN 10297-2 Mechanical Properties of Stainless Steel Tubes
Tolerances to EN 10297-2 for Seamless Stainless Steel Tubes
Chemical Compositions of Stainless Steel to EN 10297-2
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