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Application: For manufacturing auto semi-shaft casing Dimension Tolerances:
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Steel pipe supply condition |
Pipe sizes |
Allowed tolerance |
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Classification
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I |
Pipes delivered as per OD and WT
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OD D |
¡À1% |
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WT s |
WT¡Ü7mm
7mm<S¡Ü15mm
WT>15mm |
+15% -9% +12.5% -10% +12.5% -7.5% |
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II |
Pipes delivered as per OD, ID and WT |
£¨D£© £¨d£© £¨¦¤S£© |
¡À1.0% ¡À1.75% ¡Ü15% |
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III |
OD=77mm,ID=57mm WT=10mm |
£¨D£©
£¨d£©
£¨¦¤S£© |
+1.0mm -0.3mm +1.5mm -0.5mm ¡Ü1.5mm | Mechanical Properties:
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Item NO |
Grade |
Tensile Strength ¦Òb Mpa |
Yield Strength ¦Ò0.2 MPa |
Elongation ¦Ä5 % |
Hardness HB |
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1 |
45 |
¡Ý590 |
¡Ý335 |
¡Ý14 |
----- |
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2 |
45Mn2 |
---- |
------ |
------- |
217--269 |
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3 |
40MnB |
---- |
------- |
----- |
217--269 |
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4 |
40Cr |
----- |
-------- |
----- |
217--269 | Chemical composition:
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Designation |
C |
Si |
Mn |
Cr |
Mo |
B |
Cu |
Ni |
P |
S |
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Max |
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45 |
0.42~ 0.50 |
0.17~ 0.37 |
0.50~ 0.80 |
¡Ü0.25 |
---- |
---- |
¡Ü0.25 |
¡Ü0.30 |
0.035 |
0.035 |
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45Mn2 |
0.42~ 0.49 |
0.17~ 0.37 |
1.40~ 1.80 |
¡Ü0.30 |
¡Ü0.15 |
---- |
¡Ü0.25 |
¡Ü0.30 |
0.035 |
0.035 |
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40MnB |
0.37~ 0.44 |
0.17~ 0.37 |
1.10~ 1.40 |
¡Ü0.25 |
---- |
0.0005~ 0.0035 |
¡Ü0.25 |
¡Ü0.30 |
0.035 |
0.035 |
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40Cr |
0.37~ 0.44 |
0.17~ 0.37 |
0.50~ 0.80 |
0.80~ 1.10 |
¡Ü0.15 |
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¡Ü0.25 |
¡Ü0.30 |
0.035 |
0.035 | Products can be also supplied according to the standard of DIN 1629-1984. |
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