ASTM 4118 alloy steel rods

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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ASTM 4118 alloy steel rods