China SAE4140 B7 Scm440 5140 Cold Drawn Alloy Steel Rod, Find details about China B7 Thread Bar Bolts, China B7 Steel from SAE4140 B7 Scm440 5140 Cold Drawn Alloy Steel Rod
Round bars | 5mm-130mm |
Suqare bar | 6*6mm-100*100mm |
Flat bars | 3mm*20mm-50mm*100mm |
Hex bars | 6mm-100mm |
Bar Finsihe | Peeled, Cold Drawn, TurnedTurned & Polished, Centreless Ground |
Grade | C | Cr | Si | S | Mn | P | Mo |
ASTM A193 Gr.B7 | 0.37 - 0.49 | 0.80 - 1.10 | 0.15 - 0.35 | 0.04 max | 0.65 - 1.10 | 0.035 | 0.15 - 0.25 |
GB | 42CrMo |
ASTM | 4140 |
JIS | SCM440 |
DIN | 1.7225 |
Grade | Tensile Strength Mpa | Yield Strength Mpa | Elongation % | Reduction % | -40ºCAkv2/J | Hardness |
10.9 | ≥1040 | ≥940 | ≥9 | ≥48 | ≥50 | HRC32-39 |
8.8 | ≥830 | ≥660 | ≥12 | ≥52 | ≥70 | HRC23-34 |