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IS 1570 (Part 4) 30Cr4Mo2 vs GOST 4543 35HM

Close Alternative — 83.4% match based on chemical composition and mechanical property overlap.

IS 1570 (Part 4) 30Cr4Mo2 (IS 1570 (Part 4):1988) and GOST 4543 35HM (GOST 4543-2016) are both steel grades. Both fall under the Alloy Steel category. IS 1570 (Part 4) 30Cr4Mo2 is defined under Bureau of Indian Standards (IS) (India).

As per chemical composition, IS 1570 (Part 4) 30Cr4Mo2 vs GOST 4543 35HM is a 83.4% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a close alternative overall at 83.4%.

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
83.4%
MECHANICAL MATCH
No shared data
OVERALL
83.4%
Specifications
Property IS 1570 (Part 4) 30Cr4Mo2 GOST 4543 35HM
Standard IS 1570 (Part 4):1988 GOST 4543-2016
Category Alloy Steel Alloy Steel
C (%) 0.28-0.33 0.32-0.39
Si (%) 0.10-0.35 0.17-0.37
Mn (%) 0.40-0.80 0.5-0.8
Cr (%) 0.80-1.10 0.9-1.2
Mo (%) 0.15-0.28 0.15-0.3
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 GOST 4543 35HM
Tensile Strength Not specified 850-1000 MPa
Yield Strength Not specified 685 MPa min
Elongation Not specified 12% min
Hardness Not specified 241-302 HB
Typical Applications
IS 1570 (Part 4) 30Cr4Mo2
Not documented
GOST 4543 35HM
Used for shafts, gears, connecting rods, bolts, and pressure equipment parts.
Can IS 1570 (Part 4) 30Cr4Mo2 Be Substituted With GOST 4543 35HM?
IS 1570 (Part 4) 30Cr4Mo2 and GOST 4543 35HM are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.
Forms & Sizes Available on M-EX
IS 1570 (Part 4) 30Cr4Mo2
No active listings currently.
GOST 4543 35HM
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 6400–6400 mm (251.97–251.97 in)
On M-EX Right Now
IS 1570 (Part 4) 30Cr4Mo2
0 active listings and RFQs →
GOST 4543 35HM
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between IS 1570 (Part 4) 30Cr4Mo2 and GOST 4543 35HM?
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 GOST 4543 35HM?
IS 1570 (Part 4) 30Cr4Mo2 and GOST 4543 35HM are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.