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IS 1570 (Part 4) 30Cr4Mo2 vs JIS G4105 SCM430

Strong Match — 90% match based on chemical composition and mechanical property overlap.

IS 1570 (Part 4) 30Cr4Mo2 (IS 1570 (Part 4):1988) and JIS G4105 SCM430 (JIS G4105:1979) are both steel grades. Both fall under the Alloy Steel category. IS 1570 (Part 4) 30Cr4Mo2 is defined under Bureau of Indian Standards (IS), originating from India, while JIS G4105 SCM430 is defined under Japanese Industrial Standards (JIS), originating from Japan.

As per chemical composition, IS 1570 (Part 4) 30Cr4Mo2 vs JIS G4105 SCM430 is a 90% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a strong match overall at 90%.

Frequently Compared With IS 1570 (Part 4) 30Cr4Mo2:
IS 1570 (Part 7) 12Cr4Mo5H IS 1570 (Part 7) 12Cr9Mo10H IS 1570 (Part 7) 10Mo6H IS 1570 (Part 7) 12Cr2Mo5V2H NF A35-565 100C6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 10Cr20Mo6 UNI 11234 100Cr6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 7) 10Cr36Mo10H IS 1570 (Part 4) 07Cr4Mo6
Match Breakdown
CHEMISTRY MATCH
90%
MECHANICAL MATCH
No shared data
OVERALL
90%
Specifications
Property IS 1570 (Part 4) 30Cr4Mo2 JIS G4105 SCM430
Standard IS 1570 (Part 4):1988 JIS G4105:1979
Category Alloy Steel Alloy Steel
C (%) 0.28-0.33 0.28–0.33
Si (%) 0.10-0.35 0.15–0.35
Mn (%) 0.40-0.80 0.60–0.90
Cr (%) 0.80-1.10 0.90–1.20
Mo (%) 0.15-0.28 0.15–0.30
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property IS 1570 (Part 4) 30Cr4Mo2 JIS G4105 SCM430
Tensile Strength Not specified ≥780 MPa
Yield Strength Not specified ≥635 MPa
Elongation Not specified ≥15%
Hardness Not specified 229–293 HB
Typical Applications
IS 1570 (Part 4) 30Cr4Mo2
Not documented
JIS G4105 SCM430
High tensile bolts, pressure vessels, aircraft parts
Can IS 1570 (Part 4) 30Cr4Mo2 Be Substituted With JIS G4105 SCM430?
IS 1570 (Part 4) 30Cr4Mo2 and JIS G4105 SCM430 overlap closely enough on chemistry and mechanical properties that JIS G4105 SCM430 is often considered as a substitute for IS 1570 (Part 4) 30Cr4Mo2 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
Forms & Sizes Available on M-EX
IS 1570 (Part 4) 30Cr4Mo2
No active listings currently.
JIS G4105 SCM430
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 5400–5500 mm (212.6–216.54 in)
On M-EX Right Now
IS 1570 (Part 4) 30Cr4Mo2
0 active listings and RFQs →
JIS G4105 SCM430
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between IS 1570 (Part 4) 30Cr4Mo2 and JIS G4105 SCM430?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can IS 1570 (Part 4) 30Cr4Mo2 be substituted with JIS G4105 SCM430?
IS 1570 (Part 4) 30Cr4Mo2 and JIS G4105 SCM430 overlap closely enough on chemistry and mechanical properties that JIS G4105 SCM430 is often considered as a substitute for IS 1570 (Part 4) 30Cr4Mo2 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.