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JIS G4053:2008 SNCM240 Steel: Specifications & Listings

JIS G4053:2008 SNCM240: Medium carbon nickel-chromium-molybdenum alloy steel with good strength, toughness and fatigue resistance. Used for crankshafts, high-strength bolts and heavily loaded automotive components.

Forms: Round Bar Category: Alloy Steel
Grade Details
GradeJIS G4053:2008 SNCM240
Standard JIS G4053:2008
ApplicationsNickel-chromium-molybdenum case-hardening (carburizing) steel, higher carbon variant than SNCM220; gears, shafts, and highly stressed transmission components requiring wear-resistant carburized surface and tough core
Most Active InNorth (Punjab)
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Round Bar →
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Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
SAE J404 4340 SAE J404:2009 Close Alternative
SAE J404 4340 SAE J404:2000 Close Alternative
SAE J404 E4340 SAE J404:2009 Close Alternative
SAE J404 E4340 SAE J404:2000 Close Alternative
SAE J404 8637 SAE J404:2009 Close Alternative
SAE J404 8640 SAE J404:2009 Close Alternative
SAE J404 8637 SAE J404:2000 Close Alternative
SAE J404 8640 SAE J404:2000 Close Alternative
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Chemical Composition (%)
C Mn Si P S Cr Ni Mo
0.37-0.43 0.60-0.90 0.15-0.35 <=0.030 <=0.030 0.40-0.80 1.50-2.00 0.15-0.30
Mechanical Properties
Tensile Strength 980 MPa min
Yield Strength 835 MPa min
Elongation 10% min
Hardness 285-352 HB

Popular forms for this grade:

Round Bar (2)

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JIS G4053:2008 SNCM240 Round Bar
3.000 MT
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JIS G4053:2008 SNCM240 Round Bar
3.700 MT
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