we have obtained ISO 9001, ISO 14001, ISO 45001, CE, AAA-level credit rating certification, etc.
DIN2393 Standard Specification for Welded precision steel tubes.This standard specifies dimensions for welded precision steel tubes and is to be used in conjunction with DIN2393 Part 2 which states the relevant technical delivery conditions.
Chemical Composition
|
Grade |
C |
Si |
Mn |
P |
S |
Al |
|
|
Steel name |
Steel number |
max |
max |
max |
max |
max |
min |
|
RSt34-2 |
1.0034 |
0.15 |
0.30 |
0.60 |
0.025 |
0.025 |
|
|
RSt37-2 |
1.0038 |
0.17 |
0.3 |
0.70 |
0.025 |
0.025 |
|
|
St44-2 |
1.0044 |
0.21 |
0.3 |
1.10 |
0.025 |
0.025 |
|
|
St52-3 |
1.0570 |
0.22 |
0.55 |
1.60 |
0.025 |
0.025 |
0.020 |
Mechanical Properties
|
Grade |
Minumum values for the delivery condition |
||||||||||||
|
BK |
BKW |
BKS |
GBK |
NBK |
|||||||||
|
Steel name |
Steel number |
Rm |
A |
Rm |
A |
Rm |
ReH |
A |
Rm |
A |
Rm |
ReH |
A |
|
|
|
MPa |
% |
MPa |
% |
MPa |
MPa |
% |
MPa |
% |
MPa |
MPa |
% |
|
RSt34-2 |
1.0034 |
460 |
6 |
410 |
12 |
410 |
305 |
16 |
300 |
28 |
310-410 |
205 |
28 |
|
RSt37-2 |
1.0038 |
490 |
6 |
440 |
10 |
440 |
325 |
14 |
315 |
25 |
340-470 |
235 |
25 |
|
St44-2 |
1.0044 |
560 |
5 |
510 |
8 |
510 |
375 |
12 |
390 |
21 |
410-540 |
255 |
21 |
|
St52-3 |
1.0570 |
640 |
4 |
590 |
8 |
590 |
435 |
10 |
490 |
22 |
490-630 |
355 |
22 |
