DIN Pipe

DIN 17175

 

Standard: Deutsche industrie normen DIN 17175

Uses:Seamless Tubes OF Heat-resistant Steels.

 

Chemical Composition(%):

Grade C Si Mn S P Cr Mo V
Standard Steel grade Max
DIN 17175 St35.8 0.17 0.10-0.35 0.40-0.80 0.02 0.025 - - -
St45.8 0.21 0.10-0.35 0.40-1.2 0.02 0.025 - - -
15Mo3 0.12-0.20 0.10-0.35 0.40-0.80 0.02 0.025 - 0.25-0.35 -
13CrMo44 0.10-0.18 0.10-0.35 0.40-0.70 0.02 0.025 0.70-1.10 0.45-0.65 -
10CrMo910 0.08-0.15 0.50 0.40-0.70 0.02 0.025 2.00-2.5 0.90-1.20 -
14MoV63 0.10-0.18 0.10-0.35 0.40-0.70 0.02 0.025 0.30-0.60 0.50-0.70 0.22-0.32
12Cr1MoV 0.08-0.15 0.17-0.37 0.40-0.70 0.02 0.025 0.90-1.20 0.25-0.35 0.15-0.30

 

 

Mechanical Properties:

Standard
Grade Tensile strength Yield strength (MPa) Elongation     (%) Impact
(J)
Hardness
not less than not less than not less than not less than
DIN 17175 St35.8 360-480 235(t≤16mm) 25 - -
225(t>16mm)
St45.8 410-530 255(t≤16mm) 21 - -
245(t>16mm)
15Mo3 450-600 270 22 - -
13CrMo44 440-590 290 22 - -
10CrMo910 450-600 280 20 - -
14MoV63 460-610 320 20 55 -
12Cr1MoV 470-640 255 21 41 -

Available Dimension Range:

  • Cold Finished Seamless Steel Tube and Pipe:Φ8~114.3*1~20mm
  • Hot-rolled Steel Tube and Pipe:Φ114.3~720*5~120mm

DIN1629

 

Standard: DIN1629 Deutsche Industrie Normen
Uses: For manufacture of pipelines,vessels,equipment,pipe fittings and steel structures. 

Chemical Composition(%):

 Grade  Si  Mn  Cr  Ni  Cu 
St37.0  ≤0.17  0.17-0.37  0.35-0.65  ≤0.025  ≤0.020  ≤0.25  ≤0.25  ≤0.25 
St44.0  ≤0.21  0.17-0.37  0.50-0.80  ≤0.025  ≤0.020  ≤0.25  ≤0.25  ≤0.25 
St55  0.33-0.41  0.17-0.37  0.50-0.80  ≤0.025  ≤0.020  ≤0.25  ≤0.25  ≤0.25 
St52.0  ≤0.22  ≤0.55  ≤1.60  ≤0.025  ≤0.020  ≤0.25  ≤0.25  ≤0.25 

 

Mechanical Properties:

 

 

Grade  Tensile strength
(MPa) 
Yield strength (Mpa)
not less than
Elongation (%)
not less than
≤16mm  >16mm 
St37.0  350-480  235 225 25
St44.0  420-550  275 265 21
St55  540-645  295 285 17
St52.0  500-650  355 345 21

 
Available Dimension Range:
Cold Finished Seamless Steel Tube and Pipe:Φ8~114.3*1~20mm
Hot-rolled Steel Tube and Pipe:Φ114.3~720*5~120mm

 

 

DIN 2391-2

Standard:DIN 2391-2
Precision seamless steel tubes.
Chemical Composition(%):

Steel Grade
Chemical Analysis %
Grade
Material NO.
C max.
Si max.
Mn
P max.
S max.
St 30 Si
1.0211
0.1
0.3
≤0.55
0.025
0.025
St 30 Al
1.0212
0.1
0.05
≤0.55
0.025
0.025
St 35
1.0305
0.17
0.35
≥0.40
0.025
0.025
St 45
1.0408
0.21
0.35
≥0.40
0.025
0.025
St 52
1.058
0.22
0.55
≤1.60
0.025
0.025
Can join the alloy elements: Nb:≤0.03%;Ti:≤0.03%;V:≤0.05%;Nb+Ti+V:≤0.05%

Mechanical Properties:

 Delivery State
BK
BKW
BKS
GBK
NSK
Grade
Grade
Material NO.
Tensile Strength
(N/mm2)
Min.
Elongation
%
Min.
Tensile Strength
(N/mm2)
Min.
Elongation
%
Min.
Tensile Strength
(N/mm2)
Min.

Yield Strength
(N/mm2)Â
min.

Elongation
%
Min.
Tensile Strength
(N/mm2)
Min.
Elongation
%
Min.
Tensile Strength
(N/mm2)
Min.
Yield Strength
(N/mm2)
min.
Elongation
%
Min.
St 30 Si
1.0211
430
8
380
12
380
280
15
280
30
290-420
215
30
St 30 Al
1.0212
430
8
380
12
380
280
15
280
30
290-420
215
30
St 35
1.0305
480
6
420
10
420
315
14
315
25
340-470
235
25
St 45
1.0408
580
5
520
8
520
375
12
390
21
440-570
255
21
St 52
1.058
640
4
580
7
580
420
10
490
22
490-630
355
22