4140 steel properies
aisi 4140 scm440 hot rolled carbon alloy steel round bars
Standards:ASTM,JIS,GB,EN(DIN,BS,NF) Or Per as clients’ requires.
Product Basic Information:
Material | 4140 | ||
Chemical Composition | Mechanical Properties(In Quenched & Tempered State) | ||
C | 0.37-0.45 | Tensile strength(MPA) | 980 |
Si | 0.17-0.37 | Yield strength (MPA) | 785 |
Mn | 0.90-1.20 | Elongation(δ5/%) | 10 |
Cr | 0.90-1.20 | Reduction in Area (ψ/%) | 45 |
Mo | 0.20-0.30 | Impact (J) | 63 |
P | ≤0.035 | Hardness | ≤217HB |
S | ≤0.035 | ||
Cu | ≤0.30 | ||
Ni | ≤0.30 |
2.Product Application Areas:
Our products have been used in all kinds of areas, such as aviation,aerospace,navigation,nuclear energy,chemical industry,
electronic information,achine manufacture, petrochemical, automotive,instrument and meter, Communication ,transportation, and medical instruments, etc.
3.Similar steel grade & equivalent steel materials:
USA | Japanese | Gemany | British | France | International | Chinese |
ASTM&AISI&SAE | JIS | EN DIN | EN BS | EN NF | ISO | GB |
4140 | SSM440 | 42CrMo4(1.7225) | 42CrMo4 | 42CrMo4 | ------ | 40CrMnMo |
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