Minimal Match — 48.6% match
based on chemical composition and mechanical property overlap.
GB/T 3077 20CrMn (GB/T 3077:2015) and NF A35-565 100C6 are both steel grades.
Both fall under the Alloy Steel category.
GB/T 3077 20CrMn 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 20CrMn 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 20CrMn 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 48.6%.
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 20CrMn
NF A35-565 100C6
Tensile Strength
>=930 MPa
850-1100 MPa
Yield Strength
>=735 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
GB/T 3077 20CrMn specifies Cu which is not specified for NF A35-565 100C6.
Can GB/T 3077 20CrMn Be Substituted With NF A35-565 100C6?
GB/T 3077 20CrMn 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.
What is the difference between GB/T 3077 20CrMn and NF A35-565 100C6?
GB/T 3077 20CrMn specifies Cu which is not specified for NF A35-565 100C6.
Can GB/T 3077 20CrMn be substituted with NF A35-565 100C6?
GB/T 3077 20CrMn 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.