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GOST 4543 20HM vs NF A35-565 100C6

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

GOST 4543 20HM (GOST 4543-2016) and NF A35-565 100C6 are both steel grades. Both fall under the Alloy Steel category. GOST 4543 20HM is typically used for used for gears, camshafts, sleeves, axles, and machine transmission parts., while NF A35-565 100C6 is commonly used for ball bearings, roller bearings, bearing races, rollers, precision tools, wear resistant parts. NF A35-565 100C6 is defined under Association Francaise de Normalisation (NF) (France).

As per chemical composition, GOST 4543 20HM vs NF A35-565 100C6 is a 64.8% match. As per mechanical properties, the match is 20.3%. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With GOST 4543 20HM:
GB/T 3077 12Cr2Ni4A UNI 11234 100Cr6 GOST 4543 12HN3A IS 4367 07Cr4Mo6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 4) 103Cr4 IS 4367 10Cr9Mo10 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 7) 10Cr36Mo10H EN 10028-2 10CrMo9-10
Match Breakdown
CHEMISTRY MATCH
64.8%
MECHANICAL MATCH
20.3%
OVERALL
35%
Specifications
Property GOST 4543 20HM NF A35-565 100C6
Standard GOST 4543-2016 NF A35-565
Category Alloy Steel Alloy Steel
C (%) 0.17-0.24 0.95-1.05
Cr (%) 0.9-1.2 1.35-1.65
Mo (%) 0.15-0.25 Not specified
Mn (%) 0.5-0.8 0.25-0.45
Si (%) 0.17-0.37 0.15-0.35
S (%) Not specified <=0.025
P (%) Not specified <=0.027
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 20HM NF A35-565 100C6
Tensile Strength 780-980 MPa 850-1100 MPa
Yield Strength 590 MPa min Not specified
Elongation 12% min Not specified
Hardness 56-60 HRC (case) 60-66 HRC
Typical Applications
GOST 4543 20HM
Used for gears, camshafts, sleeves, axles, and machine transmission parts.
NF A35-565 100C6
ball bearings, roller bearings, bearing races, rollers, precision tools, wear resistant parts
Key Differences
Can GOST 4543 20HM Be Substituted With NF A35-565 100C6?
GOST 4543 20HM and NF A35-565 100C6 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 20HM
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 6000–6900 mm (236.22–271.65 in)
NF A35-565 100C6
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 6700–6700 mm (263.78–263.78 in)
On M-EX Right Now
GOST 4543 20HM
2 active listings and RFQs →
NF A35-565 100C6
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between GOST 4543 20HM and NF A35-565 100C6?
GOST 4543 20HM specifies Mo which is not specified for NF A35-565 100C6. NF A35-565 100C6 specifies S, P which are not specified for GOST 4543 20HM.
Can GOST 4543 20HM be substituted with NF A35-565 100C6?
GOST 4543 20HM and NF A35-565 100C6 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.