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GB/T 3077 20Mn2 vs NF A35-565 100C6

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

GB/T 3077 20Mn2 (GB/T 3077:2015) and NF A35-565 100C6 are both steel grades. Both fall under the Alloy Steel category. GB/T 3077 20Mn2 is typically used for hot-rolled or forged structural alloy steel bars, while NF A35-565 100C6 is commonly used for ball bearings, roller bearings, bearing races, rollers, precision tools, wear resistant parts. GB/T 3077 20Mn2 is defined under Guobiao Standards (GB/T), originating from China, while NF A35-565 100C6 is defined under Association Francaise de Normalisation (NF), originating from France.

As per chemical composition, GB/T 3077 20Mn2 vs NF A35-565 100C6 is a 73% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With GB/T 3077 20Mn2:
SAE J404 1330 UNI 11234 100Cr6 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10 IS 1570 (Part 4) 10Mo6 IS 1570 (Part 4) 103Cr6 EN 10028-2 10CrMo9-10
Match Breakdown
CHEMISTRY MATCH
73%
MECHANICAL MATCH
0%
OVERALL
35%
Specifications
Property GB/T 3077 20Mn2 NF A35-565 100C6
Standard GB/T 3077:2015 NF A35-565
Category Alloy Steel Alloy Steel
C (%) 0.17-0.24 0.95-1.05
Si (%) 0.17-0.37 0.15-0.35
Mn (%) 1.40-1.80 0.25-0.45
P (%) <=0.030 <=0.027
S (%) <=0.030 <=0.025
Cu (%) <=0.30 Not specified
Cr (%) Not specified 1.35-1.65
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property GB/T 3077 20Mn2 NF A35-565 100C6
Tensile Strength >=785 MPa 850-1100 MPa
Yield Strength >=590 MPa Not specified
Elongation >=10% Not specified
Hardness <=187 HB 60-66 HRC
Condition Quenched and tempered, test sample 15 mm; hardness is for bars delivered annealed or high temperature tempered Not specified
Typical Applications
GB/T 3077 20Mn2
Hot-rolled or forged structural alloy steel bars
NF A35-565 100C6
ball bearings, roller bearings, bearing races, rollers, precision tools, wear resistant parts
Key Differences
Can GB/T 3077 20Mn2 Be Substituted With NF A35-565 100C6?
GB/T 3077 20Mn2 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
GB/T 3077 20Mn2
No active listings currently.
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
GB/T 3077 20Mn2
0 active listings and RFQs →
NF A35-565 100C6
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between GB/T 3077 20Mn2 and NF A35-565 100C6?
GB/T 3077 20Mn2 specifies Cu which is not specified for NF A35-565 100C6. NF A35-565 100C6 specifies Cr which is not specified for GB/T 3077 20Mn2.
Can GB/T 3077 20Mn2 be substituted with NF A35-565 100C6?
GB/T 3077 20Mn2 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.