DIN 2391 Cold Drawn or Cold Rolled Steel Tube
Date:2019-08-30 View:3964 Tags:DIN 2391 Cold Drawn or Cold Rolled Steel Tube
DIN 2391 standard specifies the Seamless steel tubes used forMechanical and Automobile.
The main products of steel / steel grade: DIN2391-1(ST35, ST45, ST52).
Application:
-
for Atuo usd;
-
for machinery use;
-
Oil cylinder tube;
-
Motorcycle shock reducer steel tubes;
-
Auto shock reducer inner cylinder
DIN2391 ST52 Seamless Honed Tube
Features Specifications
|
OD(mm)
|
Wall Thickness Unit(mm)
|
|
2
|
2.5
|
3
|
3.5
|
4
|
4.5
|
5
|
6
|
6.5-7
|
7.5-8
|
8.5-9
|
9.5-10
|
11
|
12
|
|
Φ25-Φ28
|
●
|
●
|
●
|
●
|
●
|
●
|
|
|
|
|
|
|
|
|
|
Φ32
|
|
●
|
●
|
●
|
●
|
●
|
●
|
|
|
|
|
|
|
|
|
Φ34-Φ36
|
|
●
|
●
|
●
|
●
|
●
|
●
|
|
|
|
|
|
|
|
|
Φ38
|
|
●
|
●
|
●
|
●
|
●
|
●
|
|
|
|
|
|
|
|
|
Φ40
|
|
|
●
|
●
|
●
|
●
|
●
|
|
|
|
|
|
|
|
|
Φ42
|
|
|
●
|
●
|
●
|
●
|
●
|
|
|
|
|
|
|
|
|
Φ45
|
|
|
●
|
●
|
●
|
●
|
●
|
●
|
|
|
|
|
|
|
|
Φ48-Φ60
|
|
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
|
|
|
|
|
|
Φ63.5
|
|
|
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
|
|
|
|
|
Φ68-Φ73
|
|
|
|
|
●
|
●
|
●
|
●
|
●
|
●
|
|
|
|
|
|
Φ76
|
|
|
|
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
|
Φ80
|
|
|
|
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
|
Φ83
|
|
|
|
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
|
Φ89
|
|
|
|
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
|
Φ95
|
|
|
|
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
|
Φ102
|
|
|
|
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
|
Φ108
|
|
|
|
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
|
Φ114
|
|
|
|
|
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
|
Φ121
|
|
|
|
|
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
|
Φ127
|
|
|
|
|
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
|
Φ133
|
|
|
|
|
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
|
Φ140
|
|
|
|
|
|
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
|
Φ146
|
|
|
|
|
|
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
|
Φ152
|
|
|
|
|
|
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
|
Φ159
|
|
|
|
|
|
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
|
Φ168
|
|
|
|
|
|
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
●
|
Grade and Chemical Composition(%)
Grade
|
Chemical Composition(%):
|
|
C max
|
Si max
|
Mn
|
P max
|
S max
|
|
St 35
|
0.17
|
0.35
|
≥0.40
|
0.025
|
0.025
|
|
St 45
|
0.21
|
0.35
|
≥0.40
|
0.025
|
0.025
|
|
St 52
|
0.22
|
0.55
|
≤1.60
|
0.025
|
0.025
|
|
Steel grade
|
Chemical Composition(%):
|
|
Steel name
|
Steel number
|
C max
|
Si max
|
Mn
|
P max
|
S max
|
Al min
|
|
E215
|
1.0212
|
0.10
|
0.05
|
0.70
|
0.025
|
0.025
|
0.025
|
|
E235
|
1.0308
|
0.17
|
0.35
|
1.20
|
0.025
|
0.025
|
-
|
|
E355
|
1.0580
|
0.22
|
0.55
|
1.60
|
0.025
|
0.025
|
-
|
Mechanical Properties(Mpa)
|
Steel Grade
|
Minimum values for the delivery condition
|
|
Steel Name
|
Steel Number
|
BK
|
BKW
|
BKS
|
GBK
|
NBK
|
|
Rm
|
A %
|
Rm
|
A %
|
Rm
|
ReH
|
A %
|
Rm
|
A %
|
Rm
|
ReH
|
A %
|
|
Mpa
|
Mpa
|
Mpa
|
Mpa
|
Mpa
|
Mpa
|
Mpa
|
|
St 30 Si
|
1.0211
|
430
|
8
|
380
|
12
|
380
|
280
|
16
|
280
|
30
|
290 to 420
|
215
|
30
|
|
St 30 Al
|
1.0212
|
430
|
8
|
380
|
12
|
380
|
280
|
16
|
280
|
30
|
290 to 420
|
215
|
30
|
|
St 35
|
1.0308
|
480
|
6
|
420
|
10
|
420
|
315
|
14
|
315
|
25
|
340 to 470
|
235
|
25
|
|
St 45
|
1.0408
|
580
|
5
|
520
|
8
|
520
|
375
|
12
|
390
|
21
|
440 to 570
|
255
|
21
|
|
St 52
|
1.0580
|
640
|
4
|
580
|
7
|
580
|
420
|
10
|
490
|
22
|
490 to 630
|
355
|
22
|
Inspection and test list for the DIN 2391 Standard.
|
Inspection or test types
|
Test frequency
|
|
Internal test
|
Acceptance test
|
|
Chemical analysis
|
M
|
M
|
|
Tensile testing
|
M
|
One per tested batch
|
|
Flattening test or extension test
|
M
|
Two per tested batch
|
|
Dimension verification
|
M
|
M
|
|
Visual inspection
|
M
|
M
|
|
NDT in order to identify leaks
|
Individual
|
Individual
|
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