Customization: | Available |
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Size: | 10-600mm |
W.T: | 1-30mm |
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What is BS EN 10297?
BS EN 10297 is the material standard for heat resistant steel for mechanical and general engineering purposes seamless tube and not for pressure purposes.
Steel grade |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
Ni |
Other elem ents |
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Steel name |
Steelnum ber |
min |
max |
min |
max |
min |
max |
max |
max |
min |
max |
min |
max |
min |
max |
|
E235 |
1.0308 |
0.17 |
- |
0.35 |
- |
1.20 |
0.030 |
0.035 |
||||||||
E275 |
1.0225 |
0.21 |
- |
0.35 |
- |
1.40 |
0.030 |
0.035 |
||||||||
E315 |
1.0236 |
0.21 |
- |
0.30 |
- |
1.50 |
0.030 |
0.035 |
||||||||
E355 b |
1.0580 |
0. 22 |
- |
0.55 |
- |
1.60 |
0.030 |
0.035 |
||||||||
E470 |
1.0536 |
0.16 |
0.22 |
0.10 |
0.50 |
1.30 |
1.70 |
0.030 |
0.035 |
Al min 0.010, N max. 0.020, Nb Max.0.07,V 0.08/0.15 |
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C22E |
1.1 151 |
0. 17 |
0. 24 |
- |
0. 40 |
0. 40 |
0. 70 |
0.0 35 |
0.0 35 |
|||||||
C35E |
1.1 181 |
0. 32 |
0. 39 |
- |
0. 40 |
0. 50 |
0. 80 |
0.0 35 |
0.0 35 |
|||||||
C45E |
1.1 191 |
Term | Symbol | Explanation |
Cold-finished/hard (cold-finished as-drawn) |
BK | No heat treatment after the last cold-forming process. The tubes therefore have only low deformability. |
Cold-finished/soft (lightly cold-worked) |
BKW | After the last heat treatment there is a light finishing pass (cold drawing) With proper subsequent processing, the tube can be cold-formed (e.g. bent, expanded) within certain limits. |
Annealed | GBK | After the final cold-forming process the tubes are annealed in a controlled atmosphere or under vacuum. |
Normalized | NBK | The tubes are annealed above the upper transformation point in a controlled atmosphere or under vacuum. |