Minimal Match — 35% match
based on chemical composition and mechanical property overlap.
GB/T 3077 40CrNi (GB/T 3077:2015) and UNI 11234 100Cr6 (UNI 11234:2007) are both steel grades.
Both fall under the Alloy Steel category.
GB/T 3077 40CrNi is typically used for hot-rolled or forged structural alloy steel bars, while UNI 11234 100Cr6 is commonly used for ball bearings,roller bearings,needle bearings,dies,punches,gauges,wear resistant components.
GB/T 3077 40CrNi is defined under Guobiao Standards (GB/T), originating from China, while UNI 11234 100Cr6 is defined under Ente Nazionale Italiano di Unificazione (UNI), originating from Italy.
As per chemical composition, GB/T 3077 40CrNi vs UNI 11234 100Cr6 is a 64.2% match.
As per mechanical properties, the match is 0%.
Combined, this makes them a minimal match overall at 35%.
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 40CrNi
UNI 11234 100Cr6
Tensile Strength
>=980 MPa
750-1000 MPa
Yield Strength
>=785 MPa
400-600 MPa
Elongation
>=10%
10-14 %
Hardness
<=241 HB
60-64 HRC
Condition
Quenched and tempered, test sample 25 mm; hardness is for bars delivered annealed or high temperature tempered
GB/T 3077 40CrNi specifies Ni, Cu which are not specified for UNI 11234 100Cr6.
Can GB/T 3077 40CrNi Be Substituted With UNI 11234 100Cr6?
GB/T 3077 40CrNi and UNI 11234 100Cr6 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 40CrNi and UNI 11234 100Cr6?
GB/T 3077 40CrNi specifies Ni, Cu which are not specified for UNI 11234 100Cr6.
Can GB/T 3077 40CrNi be substituted with UNI 11234 100Cr6?
GB/T 3077 40CrNi and UNI 11234 100Cr6 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.