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GOST 4543 40HM vs IS 1570 (Part 4) 42Cr4Mo2

Strong Match — 92.4% match based on chemical composition and mechanical property overlap.

GOST 4543 40HM (GOST 4543-2016) and IS 1570 (Part 4) 42Cr4Mo2 (IS 1570 (Part 4):1988) are both steel grades. Both fall under the Alloy Steel category. IS 1570 (Part 4) 42Cr4Mo2 is defined under Bureau of Indian Standards (IS) (India).

As per chemical composition, GOST 4543 40HM vs IS 1570 (Part 4) 42Cr4Mo2 is a 92.4% 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 92.4%.

Frequently Compared With GOST 4543 40HM:
NF A35-565 100C6 GOST 4543 12HN3A UNI 11234 100Cr6 GB/T 3077 12Cr2Ni4A IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 103Cr4 IS 4367 10Cr9Mo10 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 07Cr4Mo6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 4) 103Cr6
Match Breakdown
CHEMISTRY MATCH
92.4%
MECHANICAL MATCH
No shared data
OVERALL
92.4%
Specifications
Property GOST 4543 40HM IS 1570 (Part 4) 42Cr4Mo2
Standard GOST 4543-2016 IS 1570 (Part 4):1988
Category Alloy Steel Alloy Steel
C (%) 0.36-0.44 0.38-0.45
Cr (%) 0.9-1.2 0.90-1.20
Mo (%) 0.15-0.3 0.15-0.30
Mn (%) 0.5-0.8 0.60-0.90
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 40HM IS 1570 (Part 4) 42Cr4Mo2
Tensile Strength 980-1180 MPa Not specified
Yield Strength 835 MPa min Not specified
Elongation 10% min Not specified
Hardness 285-341 HB Not specified
Typical Applications
GOST 4543 40HM
Used for gears, shafts, spindles, bolts, and hydraulic components.
IS 1570 (Part 4) 42Cr4Mo2
Not documented
Can GOST 4543 40HM Be Substituted With IS 1570 (Part 4) 42Cr4Mo2?
GOST 4543 40HM and IS 1570 (Part 4) 42Cr4Mo2 overlap closely enough on chemistry and mechanical properties that IS 1570 (Part 4) 42Cr4Mo2 is often considered as a substitute for GOST 4543 40HM 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
GOST 4543 40HM
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 6300–7000 mm (248.03–275.59 in)
IS 1570 (Part 4) 42Cr4Mo2
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On M-EX Right Now
GOST 4543 40HM
2 active listings and RFQs →
IS 1570 (Part 4) 42Cr4Mo2
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Frequently Asked Questions
What is the difference between GOST 4543 40HM and IS 1570 (Part 4) 42Cr4Mo2?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can GOST 4543 40HM be substituted with IS 1570 (Part 4) 42Cr4Mo2?
GOST 4543 40HM and IS 1570 (Part 4) 42Cr4Mo2 overlap closely enough on chemistry and mechanical properties that IS 1570 (Part 4) 42Cr4Mo2 is often considered as a substitute for GOST 4543 40HM in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.