JIS G 4104:1979 SCr420 Steel: Specifications & Listings

JIS G 4104:1979 SCr420: Japanese chrome case hardening steel, higher C

Forms: Round Bar Category: Alloy Steel
Grade Details
GradeJIS G 4104:1979 SCr420
Standard JIS G 4104:1979
ApplicationsCase hardened gears, shafts, cams
Most Active InCentral (Madhya Pradesh)
Equivalent / Similar Grades
Grade Standard Region Live on M-EX
EN 10084 20MnCr5 EN 10084:2008 Europe 11 listings, 11 RFQs →
AISI 5120 AISI USA 0 listings, 2 RFQs →
EN 10084 16MnCr5 EN 10084:2008 Europe 11 listings, 6 RFQs →
SAE J404 5120 SAE J404:2000 USA 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 5120 SAE J404:2009 Close Alternative
SAE J404 5120 SAE J404:2000 Close Alternative
SAE J404 5130 SAE J404:2009 Close Alternative
SAE J404 5130 SAE J404:2000 Close Alternative
BS 970 EN207 BS 970:1955 Close Alternative
BS 970 (Part 1) 530A30 BS 970 (Part 1):1983 Close Alternative
BS 970 (Part 1) 530A32 BS 970 (Part 1):1983 Close Alternative
SAE J404 5132 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 Si Mn Cr P S
0.18–0.23 0.15–0.35 0.60–0.90 0.90–1.20 ≤0.030 ≤0.030
Mechanical Properties
Tensile Strength ≥830 MPa
Case Hardness HRC 58–62
Core Hardness HB 235–293
Typical Available Sizes
Round Bar 16mm–200mm dia
Flat Bar 20×8mm–150×40mm
Sizes are indicative. Contact seller for exact availability.

Popular forms for this grade:

Round Bar (2)

Active JIS G 4104:1979 SCr420 Listings on M-EX (For Sale)

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JIS G 4104:1979 SCr420 Round Bar
4.100 MT
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JIS G 4104:1979 SCr420 Round Bar
2.700 MT
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