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We can also provide Forged Rings for Slewing Rings . We can supply the material of C45 steel, 50Mn, 42CrMo material. Normally we deliver the forged rings after rough machining and quenching, and the tolerance can be discussed case by case.
Chemical Analysis
Steel |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
Ni |
Cu |
50Mn |
0.48~0.56 |
0.17~0.37 |
0.70~1.00 |
≤0.035 |
≤0.035 |
≤0.25 |
— |
≤0.30 |
≤0.20 |
42CrMo |
0.38~0.45 |
0.17~0.37 |
0.50~0.80 |
≤0.035 |
≤0.035 |
0.90~1.20 |
0.15~0.25 |
— |
— |
45 |
0.42~0.50 |
0.17~0.37 |
0.50~0.80 |
≤0.035 |
≤0.035 |
≤0.25 |
— |
≤0.30 |
≤0.20 |
* or other materials as required by customers |
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Steel Grade |
Tensile Strength σb |
Yield Point σs |
Elongation δ5 |
Shrinkage ψ |
Impact Aku2 |
GB/T 699-1999 |
≥645MPa |
≥390MPa |
≥13% |
≥40% |
≥31J |
50Mn |
|||||
GB/T 699-1999 |
≥1080MPa |
≥930MPa |
≥12% |
≥45% |
≥63J |
42CrMo |
|||||
GB/T 699-1999 |
≥600MPa |
≥355MPa |
≥16% |
≥40% |
≥39J |
45 |
Contrast of Steel Grade
Chinese Standard |
DIN Standard |
AISI Standard |
ISO Standard |
GB/T 699-1999 |
— |
AISI1053 |
SL，SM |
50Mn |
|||
GB/T 699-1999 |
42CrMo4 |
4140 |
42CrMo4 |
42CrMo |
|||
GB/T 699-1999 |
C45E |
AISI1045 |
C45E4 |
45 |
Steel Grade |
Quenching&Tempering |
Normalizing |
Hardness |
Hardness |
|
GB/T 699-1999 |
HB229~269 |
HB179~235 |
50Mn |
||
GB/T 699-1999 |
HB269~321 |
* |
42CrMo |
||
GB/T 699-1999 |
HB228~280 |
HB170~217 |
45 |
||
* As required by customers |
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We determine the hardness according to the diameter of depression in the forged rings.
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