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GOST 4543 40HNMA vs IS 1570 (Part 4) 103Cr6

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

GOST 4543 40HNMA (GOST 4543-2016) and IS 1570 (Part 4) 103Cr6 (IS 1570 (Part 4):1988) are both steel grades. Both fall under the Alloy Steel category. IS 1570 (Part 4) 103Cr6 is defined under Bureau of Indian Standards (IS) (India).

As per chemical composition, GOST 4543 40HNMA vs IS 1570 (Part 4) 103Cr6 is a 58.1% 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 40HNMA:
NF A35-565 100C6 UNI 11234 100Cr6 GB/T 3077 12Cr2Ni4A GOST 4543 12HN3A IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10 IS 1570 (Part 4) 103Cr4 EN 10028-2 10CrMo9-10
Match Breakdown
CHEMISTRY MATCH
58.1%
MECHANICAL MATCH
No shared data
OVERALL
35%
Specifications
Property GOST 4543 40HNMA IS 1570 (Part 4) 103Cr6
Standard GOST 4543-2016 IS 1570 (Part 4):1988
Category Alloy Steel Alloy Steel
C (%) 0.36-0.44 0.95-1.10
Cr (%) 0.6-0.9 1.40-1.60
Ni (%) 1.25-1.65 Not specified
Mo (%) 0.15-0.3 Not specified
Mn (%) 0.5-0.8 0.25-0.45
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 40HNMA IS 1570 (Part 4) 103Cr6
Tensile Strength 930-1180 MPa Not specified
Yield Strength 785 MPa min Not specified
Elongation 12% min Not specified
Hardness 269-341 HB Not specified
Typical Applications
GOST 4543 40HNMA
Used for gears, shafts, spindles, connecting rods, and aerospace parts.
IS 1570 (Part 4) 103Cr6
Not documented
Key Differences
Can GOST 4543 40HNMA Be Substituted With IS 1570 (Part 4) 103Cr6?
GOST 4543 40HNMA and IS 1570 (Part 4) 103Cr6 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 40HNMA
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 6000–6000 mm (236.22–236.22 in)
IS 1570 (Part 4) 103Cr6
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On M-EX Right Now
GOST 4543 40HNMA
2 active listings and RFQs →
IS 1570 (Part 4) 103Cr6
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Frequently Asked Questions
What is the difference between GOST 4543 40HNMA and IS 1570 (Part 4) 103Cr6?
GOST 4543 40HNMA specifies Ni, Mo which are not specified for IS 1570 (Part 4) 103Cr6.
Can GOST 4543 40HNMA be substituted with IS 1570 (Part 4) 103Cr6?
GOST 4543 40HNMA and IS 1570 (Part 4) 103Cr6 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.