Sichuan Liaofu Special Steel Company is one of the most experienced manufacturers and suppliers of 4140 steel properies in China. With over 20 years' experience, our factory offer high quality products made in China with competitive price. Welcome to contact us for wholesale service.
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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