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GB/T 3077 20MnVB vs GB/T 3077 15MnVB

Close Alternative — 78.1% match based on chemical composition and mechanical property overlap.

GB/T 3077 20MnVB (GB/T 3077:2015) and GB/T 3077 15MnVB (GB/T 3077:2015) are both steel grades. Both fall under the Alloy Steel category. GB/T 3077 20MnVB is typically used for hot-rolled or forged structural alloy steel bars, while GB/T 3077 15MnVB is commonly used for hot-rolled or forged structural alloy steel bars. GB/T 3077 20MnVB is defined under Guobiao Standards (GB/T), originating from China, while GB/T 3077 15MnVB is defined under Guobiao Standards (GB/T), originating from China.

As per chemical composition, GB/T 3077 20MnVB vs GB/T 3077 15MnVB is a 92.2% match. As per mechanical properties, the match is 50%. Combined, this makes them a close alternative overall at 78.1%.

Frequently Compared With GB/T 3077 20MnVB:
IS 1570 (Part 4) 103Cr6 NF A35-565 100C6 UNI 11234 100Cr6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 10Cr20Mo6 EN 10028-2 10CrMo9-10 IS 1570 (Part 7) 10Mo6H IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10
Match Breakdown
CHEMISTRY MATCH
92.2%
MECHANICAL MATCH
50%
OVERALL
78.1%
Specifications
Property GB/T 3077 20MnVB GB/T 3077 15MnVB
Standard GB/T 3077:2015 GB/T 3077:2015
Category Alloy Steel Alloy Steel
C (%) 0.17-0.23 0.12-0.18
Si (%) 0.17-0.37 0.17-0.37
Mn (%) 1.20-1.60 1.20-1.60
B (%) 0.0008-0.0035 0.0008-0.0035
V (%) 0.07-0.12 0.07-0.12
P (%) <=0.030 <=0.030
S (%) <=0.030 <=0.030
Cu (%) <=0.30 <=0.30
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 20MnVB GB/T 3077 15MnVB
Tensile Strength >=1080 MPa >=885 MPa
Yield Strength >=885 MPa >=635 MPa
Elongation >=10% >=10%
Hardness <=207 HB <=207 HB
Condition Quenched and tempered, test sample 15 mm; hardness is for bars delivered annealed or high temperature tempered Quenched and tempered, test sample 15 mm; hardness is for bars delivered annealed or high temperature tempered
Typical Applications
GB/T 3077 20MnVB
Hot-rolled or forged structural alloy steel bars
GB/T 3077 15MnVB
Hot-rolled or forged structural alloy steel bars
Can GB/T 3077 20MnVB Be Substituted With GB/T 3077 15MnVB?
GB/T 3077 20MnVB and GB/T 3077 15MnVB 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 20MnVB
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GB/T 3077 15MnVB
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Frequently Asked Questions
What is the difference between GB/T 3077 20MnVB and GB/T 3077 15MnVB?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can GB/T 3077 20MnVB be substituted with GB/T 3077 15MnVB?
GB/T 3077 20MnVB and GB/T 3077 15MnVB 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.