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

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

GOST 4543 35HM (GOST 4543-2016) and IS 1570 (Part 4) 30Cr4Mo2 (IS 1570 (Part 4):1988) 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, GOST 4543 35HM vs IS 1570 (Part 4) 30Cr4Mo2 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 GOST 4543 35HM:
NF A35-565 100C6 UNI 11234 100Cr6 GOST 4543 12HN3A GB/T 3077 12Cr2Ni4A IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 105Cr5 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10
Match Breakdown
CHEMISTRY MATCH
83.4%
MECHANICAL MATCH
No shared data
OVERALL
83.4%
Specifications
Property GOST 4543 35HM IS 1570 (Part 4) 30Cr4Mo2
Standard GOST 4543-2016 IS 1570 (Part 4):1988
Category Alloy Steel Alloy Steel
C (%) 0.32-0.39 0.28-0.33
Cr (%) 0.9-1.2 0.80-1.10
Mo (%) 0.15-0.3 0.15-0.28
Mn (%) 0.5-0.8 0.40-0.80
Si (%) 0.17-0.37 0.10-0.35
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property GOST 4543 35HM IS 1570 (Part 4) 30Cr4Mo2
Tensile Strength 850-1000 MPa Not specified
Yield Strength 685 MPa min Not specified
Elongation 12% min Not specified
Hardness 241-302 HB Not specified
Typical Applications
GOST 4543 35HM
Used for shafts, gears, connecting rods, bolts, and pressure equipment parts.
IS 1570 (Part 4) 30Cr4Mo2
Not documented
Can GOST 4543 35HM Be Substituted With IS 1570 (Part 4) 30Cr4Mo2?
GOST 4543 35HM and IS 1570 (Part 4) 30Cr4Mo2 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
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)
IS 1570 (Part 4) 30Cr4Mo2
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On M-EX Right Now
GOST 4543 35HM
2 active listings and RFQs →
IS 1570 (Part 4) 30Cr4Mo2
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Frequently Asked Questions
What is the difference between GOST 4543 35HM and IS 1570 (Part 4) 30Cr4Mo2?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can GOST 4543 35HM be substituted with IS 1570 (Part 4) 30Cr4Mo2?
GOST 4543 35HM and IS 1570 (Part 4) 30Cr4Mo2 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.