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GB/T 3077 15CrNiMo vs BS 970 (Part 1) 805M22

Close Alternative — 72.8% match based on chemical composition and mechanical property overlap.

GB/T 3077 15CrNiMo (GB/T 3077:2015) and BS 970 (Part 1) 805M22 (BS 970 (Part 1):1991) are both steel grades. Both fall under the Alloy Steel category. GB/T 3077 15CrNiMo is typically used for hot-rolled or forged structural alloy steel bars, while BS 970 (Part 1) 805M22 is commonly used for case hardening steel (section four). GB/T 3077 15CrNiMo is defined under Guobiao Standards (GB/T), originating from China, while BS 970 (Part 1) 805M22 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, GB/T 3077 15CrNiMo vs BS 970 (Part 1) 805M22 is a 59.3% match. As per mechanical properties, the match is 100%. Combined, this makes them a close alternative overall at 72.8%.

Frequently Compared With GB/T 3077 15CrNiMo:
IS 1570 (Part 7) 10Mo6H IS 4367 07Cr4Mo6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 10Cr20Mo6 IS 4367 10Cr9Mo10 EN 10028-2 10CrMo9-10 IS 1570 (Part 4) 07Cr4Mo6 NF A35-565 100C6 UNI 11234 100Cr6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 7) 10Cr36Mo10H
Match Breakdown
CHEMISTRY MATCH
59.3%
MECHANICAL MATCH
100%
OVERALL
72.8%
Specifications
Property GB/T 3077 15CrNiMo BS 970 (Part 1) 805M22
Standard GB/T 3077:2015 BS 970 (Part 1):1991
Category Alloy Steel Alloy Steel
C (%) 0.13-0.18 0.19-0.25
Si (%) 0.17-0.37 Not specified
Mn (%) 0.70-0.90 0.60-0.95
Cr (%) 0.45-0.65 0.35-0.65
Mo (%) 0.45-0.60 0.15-0.25
Ni (%) 0.70-1.00 0.35-0.75
P (%) <=0.030 Not specified
S (%) <=0.030 Not specified
Cu (%) <=0.30 Not specified
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 15CrNiMo BS 970 (Part 1) 805M22
Tensile Strength >=930 MPa 930 MPa min
Yield Strength >=750 MPa Not specified
Elongation >=10% 10 % min
Hardness <=197 HB Not specified
Condition Quenched and tempered, test sample 15 mm; hardness is for bars delivered annealed or high temperature tempered Case hardened, 19 mm test bar
Typical Applications
GB/T 3077 15CrNiMo
Hot-rolled or forged structural alloy steel bars
BS 970 (Part 1) 805M22
Case hardening steel (section four)
Key Differences
Can GB/T 3077 15CrNiMo Be Substituted With BS 970 (Part 1) 805M22?
GB/T 3077 15CrNiMo and BS 970 (Part 1) 805M22 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.
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GB/T 3077 15CrNiMo
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BS 970 (Part 1) 805M22
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Frequently Asked Questions
What is the difference between GB/T 3077 15CrNiMo and BS 970 (Part 1) 805M22?
GB/T 3077 15CrNiMo specifies Si, P, S, Cu which are not specified for BS 970 (Part 1) 805M22.
Can GB/T 3077 15CrNiMo be substituted with BS 970 (Part 1) 805M22?
GB/T 3077 15CrNiMo and BS 970 (Part 1) 805M22 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.