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GB/T 3077 15MnVB vs BS 970 (Part 1) 174H20

Close Alternative — 70.4% match based on chemical composition and mechanical property overlap.

GB/T 3077 15MnVB (GB/T 3077:2015) and BS 970 (Part 1) 174H20 (BS 970 (Part 1):1991) are both steel grades. Both fall under the Alloy Steel category. GB/T 3077 15MnVB is typically used for hot-rolled or forged structural alloy steel bars, while BS 970 (Part 1) 174H20 is commonly used for case hardening steel (section four). GB/T 3077 15MnVB is defined under Guobiao Standards (GB/T), originating from China, while BS 970 (Part 1) 174H20 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, GB/T 3077 15MnVB vs BS 970 (Part 1) 174H20 is a 70.4% 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 70.4%.

Frequently Compared With GB/T 3077 15MnVB:
IS 1570 (Part 7) 10Mo6H IS 1570 (Part 4) 103Cr4 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 NF A35-565 100C6 UNI 11234 100Cr6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 10Cr20Mo6 IS 4367 10Cr9Mo10 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 7) 10Cr36Mo10H EN 10028-2 10CrMo9-10
Match Breakdown
CHEMISTRY MATCH
70.4%
MECHANICAL MATCH
No shared data
OVERALL
70.4%
Specifications
Property GB/T 3077 15MnVB BS 970 (Part 1) 174H20
Standard GB/T 3077:2015 BS 970 (Part 1):1991
Category Alloy Steel Alloy Steel
C (%) 0.12-0.18 0.17-0.23
Si (%) 0.17-0.37 Not specified
Mn (%) 1.20-1.60 1.20-1.50
B (%) 0.0008-0.0035 0.0005-0.005
V (%) 0.07-0.12 Not specified
P (%) <=0.030 <=0.060
S (%) <=0.030 0.03-0.06
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 15MnVB BS 970 (Part 1) 174H20
Tensile Strength >=885 MPa Not specified
Yield Strength >=635 MPa Not specified
Elongation >=10% Not specified
Hardness <=207 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 15MnVB
Hot-rolled or forged structural alloy steel bars
BS 970 (Part 1) 174H20
Case hardening steel (section four)
Key Differences
Can GB/T 3077 15MnVB Be Substituted With BS 970 (Part 1) 174H20?
GB/T 3077 15MnVB and BS 970 (Part 1) 174H20 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 15MnVB
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BS 970 (Part 1) 174H20
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Frequently Asked Questions
What is the difference between GB/T 3077 15MnVB and BS 970 (Part 1) 174H20?
GB/T 3077 15MnVB specifies Si, V, Cu which are not specified for BS 970 (Part 1) 174H20.
Can GB/T 3077 15MnVB be substituted with BS 970 (Part 1) 174H20?
GB/T 3077 15MnVB and BS 970 (Part 1) 174H20 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.