Close Alternative — 79.6% match
based on chemical composition and mechanical property overlap.
GB/T 3077 15CrMn (GB/T 3077:2015) and BS 970 (Part 1) 523H15 (BS 970 (Part 1):1991) are both steel grades.
Both fall under the Alloy Steel category.
GB/T 3077 15CrMn is typically used for hot-rolled or forged structural alloy steel bars, while BS 970 (Part 1) 523H15 is commonly used for case hardening steel (section four).
GB/T 3077 15CrMn is defined under Guobiao Standards (GB/T), originating from China, while BS 970 (Part 1) 523H15 is defined under British Standards (BS), originating from United Kingdom.
As per chemical composition, GB/T 3077 15CrMn vs BS 970 (Part 1) 523H15 is a 79.6% match.
Mechanical property data is not available for both grades, so this factor could not be scored.
Combined, this makes them a close alternative overall at 79.6%.
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 15CrMn
BS 970 (Part 1) 523H15
Tensile Strength
>=785 MPa
Not specified
Yield Strength
>=590 MPa
Not specified
Elongation
>=12%
Not specified
Hardness
<=179 HB
Not specified
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 15CrMn
Hot-rolled or forged structural alloy steel bars
BS 970 (Part 1) 523H15
Case hardening steel (section four)
Key Differences
GB/T 3077 15CrMn specifies Si, P, S, Cu which are not specified for BS 970 (Part 1) 523H15.
Can GB/T 3077 15CrMn Be Substituted With BS 970 (Part 1) 523H15?
GB/T 3077 15CrMn and BS 970 (Part 1) 523H15 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.
What is the difference between GB/T 3077 15CrMn and BS 970 (Part 1) 523H15?
GB/T 3077 15CrMn specifies Si, P, S, Cu which are not specified for BS 970 (Part 1) 523H15.
Can GB/T 3077 15CrMn be substituted with BS 970 (Part 1) 523H15?
GB/T 3077 15CrMn and BS 970 (Part 1) 523H15 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.