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GOST 4543 40HNM vs IS 1570 (Part 4) 103Cr4

Minimal Match — 35% match based on chemical composition and mechanical property overlap.

GOST 4543 40HNM (GOST 4543-2016) and IS 1570 (Part 4) 103Cr4 (IS 1570 (Part 4):1988) are both steel grades. Both fall under the Alloy Steel category. IS 1570 (Part 4) 103Cr4 is defined under Bureau of Indian Standards (IS) (India).

As per chemical composition, GOST 4543 40HNM vs IS 1570 (Part 4) 103Cr4 is a 54.3% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With GOST 4543 40HNM:
NF A35-565 100C6 UNI 11234 100Cr6 GOST 4543 12HN3A GB/T 3077 12Cr2Ni4A IS 1570 (Part 4) 103Cr6 IS 4367 07Cr4Mo6 IS 4367 10Cr9Mo10 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 7) 10Cr36Mo10H EN 10028-2 10CrMo9-10
Match Breakdown
CHEMISTRY MATCH
54.3%
MECHANICAL MATCH
No shared data
OVERALL
35%
Specifications
Property GOST 4543 40HNM IS 1570 (Part 4) 103Cr4
Standard GOST 4543-2016 IS 1570 (Part 4):1988
Category Alloy Steel Alloy Steel
C (%) 0.36-0.44 0.95-1.10
Cr (%) 0.4-0.7 0.90-1.20
Ni (%) 0.4-0.7 Not specified
Mo (%) 0.15-0.3 Not specified
Mn (%) 0.5-0.8 0.25-0.45
Si (%) Not specified 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 40HNM IS 1570 (Part 4) 103Cr4
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 40HNM
Used for crankshafts, gears, axles, heavy shafts, and machine tool parts.
IS 1570 (Part 4) 103Cr4
Not documented
Key Differences
Can GOST 4543 40HNM Be Substituted With IS 1570 (Part 4) 103Cr4?
GOST 4543 40HNM and IS 1570 (Part 4) 103Cr4 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.
Forms & Sizes Available on M-EX
GOST 4543 40HNM
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 5600–5600 mm (220.47–220.47 in)
IS 1570 (Part 4) 103Cr4
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On M-EX Right Now
GOST 4543 40HNM
2 active listings and RFQs →
IS 1570 (Part 4) 103Cr4
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Frequently Asked Questions
What is the difference between GOST 4543 40HNM and IS 1570 (Part 4) 103Cr4?
GOST 4543 40HNM specifies Ni, Mo which are not specified for IS 1570 (Part 4) 103Cr4. IS 1570 (Part 4) 103Cr4 specifies Si which is not specified for GOST 4543 40HNM.
Can GOST 4543 40HNM be substituted with IS 1570 (Part 4) 103Cr4?
GOST 4543 40HNM and IS 1570 (Part 4) 103Cr4 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.