ASTM 4118 alloy steel rods
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ASTM 4118 alloy steel rods
ASTM 4118 SCM420 EN18CrMo4 20CrMo
Size:16-800mm
forged alloy steel round bars / rods made in china
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STM 4118 alloy steel rods
1,Material:ASTM 4118 SCM420 EN18CrMo4 20CrMo |
2,Diameter:160-800mm |
3,Length:15m max |
| 4,Tolerance:0/+5mm |
5,UT:Sep 1921 Class C/c |
6,Heating:quenched+tempered ,depend on the requirements |
7,Certification:MTC or Third party inspection like SGS |
Chemical component:
| C :0.17~0.24 |
| Si:0.17~0.37 |
| Mn:0.40~0.70 |
| S :residual content≤0.035 |
| P :residual content≤0.035 |
| Cr:0.80~1.10 |
| Ni:residual content≤0.030 |
| Cu:residual content≤0.030 |
Mo:0.15~0.25 |
Mechanical property:
| tensile strength σb (MPa):≥885(90) |
| yield strength σs (MPa):≥685(70) |
| special elongation δ5 (%):≥12 |
| contraction ratio ψ (%):≥50 |
| Akv (J):≥78 |
| impact toughness αkv (J/cm2):≥98(10) |
hardness :≤197HB |
Heat treatment:quench 880centidegree ,temper 500centidegree |
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