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KS D 3867:2025 SCM440 Steel: Specifications & Listings

KS D 3867:2025 SCM440: KS SCM440 is a chromium molybdenum alloy steel per Korean Standard KS D3867, equivalent to JIS SCM440, AISI 4140 and EN19. It is widely used in quenched and tempered condition for high-strength shafts, gears and automotive components requiring good fatigue resistance.

Forms: Round Bar Category: Alloy Steel
Grade Details
GradeKS D 3867:2025 SCM440
Standard KS D 3867:2025
Applicationsshafts,gears,axles,bolts,automotive parts,machine components,spindles,hydraulic parts
Most Active InWest (Gujarat, Maharashtra)
Equivalent / Similar Grades
Grade Standard Region Live on M-EX
JIS G4105 SCM440 JIS G4105:1979 Japan 0 listings, 3 RFQs →
AISI 4140 AISI USA 3 listings, 0 RFQs →
BS 970 EN19 BS 970:1955 UK 19 listings, 15 RFQs →
EN 10083-3 42CrMo4 EN 10083-3:2006 Europe 21 listings, 22 RFQs →
GB/T 3077 42CrMo GB/T 3077:2015 China 2 listings, 0 RFQs →
BS 970 (Part 1) 708M40 BS 970 (Part 1):1991 UK 2 listings, 0 RFQs →
SAE J404 4140 SAE J404:2000 USA No activity yet
BS 970 (Part 1) 708A40 BS 970 (Part 1):1983 UK No activity yet
Supply & Demand by FormSee Full Supply & Demand →
Round Bar →
Low Activity
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
UNI 7845 42CrMo4 UNI 7845:1978 Strong Match
SS 14 22 44 2244 SS 14 22 44 Strong Match
IS 1570 (Part 4) 42Cr4Mo2 IS 1570 (Part 4):1988 Strong Match
SAE J404 4140 SAE J404:2009 Strong Match
SAE J404 4140 SAE J404:2000 Strong Match
BS 970 (Part 3) 708M40 BS 970 (Part 3):1991 Strong Match
BS 970 (Part 1) 708A40 BS 970 (Part 1):1983 Strong Match
BS 970 (Part 3) 709M40 BS 970 (Part 3):1991 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 Cr Mo
0.38-0.43 0.15-0.35 0.60-0.85 <=0.030 <=0.030 0.90-1.20 0.15-0.30
Mechanical Properties
Tensile Strength 900-1100 MPa
Yield Strength 700-900 MPa
Elongation 11-16 %
Hardness 248-320 HB
Typical Available Sizes
Round Bar 16-500 mm
Flat Bar 20-150 mm
Sizes are indicative. Contact seller for exact availability.

Popular forms for this grade:

Round Bar (2)

Active KS D 3867:2025 SCM440 Listings on M-EX (For Sale)

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KS D 3867:2025 SCM440 Round Bar
5.900 MT
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KS D 3867:2025 SCM440 Round Bar
2.900 MT
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Buyer RFQs for KS D 3867:2025 SCM440

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