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JIS G4103:1979 SNCM240 Steel: Specifications & Listings

JIS G4103:1979 SNCM240: SNCM240 is a nickel chromium molybdenum alloy steel known for good hardenability and impact resistance. It is widely used in quenched and tempered condition for highly stressed parts.

Forms: Round Bar Category: Alloy Steel
Grade Details
GradeJIS G4103:1979 SNCM240
Standard JIS G4103:1979
ApplicationsUsed in gears, shafts, axles, crankshafts, bolts, and machine tool components.
Most Active InCentral (Madhya Pradesh)
Supply & Demand by FormSee Full Supply & Demand →
Round Bar →
Low Activity
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 Si Mn P S Ni Cr Mo
0.37-0.43 0.15-0.35 0.60-0.90 0.030 max 0.030 max 1.50-2.00 0.40-0.80 0.15-0.30
Mechanical Properties
Tensile Strength 850-1000 MPa
Yield Strength 685 MPa min
Elongation 13% min
Hardness 240-300 HB

Popular forms for this grade:

Round Bar (2)

Active JIS G4103:1979 SNCM240 Listings on M-EX (For Sale)

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JIS G4103:1979 SNCM240 Round Bar
4.600 MT
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JIS G4103:1979 SNCM240 Round Bar
1.900 MT
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