Date:2019-08-30 View:3962 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
●
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●
●
●
●
●
●
●
●
Φ114
●
●
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●
●
●
●
●
●
Φ121
●
●
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●
●
●
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●
●
Φ127
●
●
●
●
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●
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●
Φ133
●
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●
●
●
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●
●
Φ140
●
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●
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●
Φ146
●
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●
Φ152
●
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Φ159
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Φ168
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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
