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JIS G4053:2008 SCM430 Steel: Specifications & Listings

JIS G4053:2008 SCM430: Chromium-molybdenum alloy steel for machine structural use with good hardenability and strength. Used for axles, shafts, gears and high-tensile bolts in automotive and general engineering.

Forms: Round Bar Category: Alloy Steel
Grade Details
GradeJIS G4053:2008 SCM430
Standard JIS G4053:2008
ApplicationsChromium-molybdenum through-hardening (quenched and tempered) alloy steel; shafts, bolts, gears, and machine components requiring moderate strength and toughness
Most Active InWest (Maharashtra)
Equivalent / Similar Grades
Grade Standard Region Live on M-EX
SAE J404 4130 SAE J404:2009 USA 2 listings, 0 RFQs →
BS 970 (Part 1) 708A30 BS 970 (Part 1):1983 UK No activity yet
IS 1570 (Part 4) 30Cr4Mo2 IS 1570 (Part 4):1988 India No activity yet
Supply & Demand by FormSee Full Supply & Demand →
Round Bar →
Low Activity
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
SAE J404 4130 SAE J404:2009 Strong Match
SAE J404 4130 SAE J404:2000 Strong Match
BS 970 (Part 1) 708A30 BS 970 (Part 1):1983 Strong Match
IS 1570 (Part 4) 30Cr4Mo2 IS 1570 (Part 4):1988 Strong Match
BS 970 (Part 3) 708M40 BS 970 (Part 3):1991 Close Alternative
IS 1570 (Part 4) 42Cr4Mo2 IS 1570 (Part 4):1988 Close Alternative
SAE J404 4135 SAE J404:2009 Close Alternative
SAE J404 4137 SAE J404:2009 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 Mo
0.28-0.33 0.60-0.85 0.15-0.35 <=0.030 <=0.030 0.90-1.20 0.15-0.25
Mechanical Properties
Tensile Strength 930 MPa min
Yield Strength 785 MPa min
Elongation 12% min
Hardness 269-331 HB

Popular forms for this grade:

Round Bar (2)

Active JIS G4053:2008 SCM430 Listings on M-EX (For Sale)

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JIS G4053:2008 SCM430 Round Bar
3.700 MT
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JIS G4053:2008 SCM430 Round Bar
4.700 MT
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