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GB/T 3077 25Cr2MoV vs ASTM A681 P20

Related Material — 65% match based on chemical composition and mechanical property overlap.

GB/T 3077 25Cr2MoV (GB/T 3077:2015) and ASTM A681 P20 (ASTM A681:2008) are both steel grades. GB/T 3077 25Cr2MoV is classified under Alloy Steel, while ASTM A681 P20 is classified under Tool & Die Steels — a different category, which is worth noting alongside the chemistry match below. GB/T 3077 25Cr2MoV is typically used for hot-rolled or forged structural alloy steel bars, while ASTM A681 P20 is commonly used for tools, dies and fixtures (clause 1.2). GB/T 3077 25Cr2MoV is defined under Guobiao Standards (GB/T), originating from China, while ASTM A681 P20 is defined under ASTM International, originating from United States.

As per chemical composition, GB/T 3077 25Cr2MoV vs ASTM A681 P20 is a 65.4% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a related material overall at 65%.

Frequently Compared With GB/T 3077 25Cr2MoV:
UNI 11234 100Cr6 GB/T 3077 12CrMoV IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 NF A35-565 100C6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10 EN 10028-2 10CrMo9-10
Match Breakdown
CHEMISTRY MATCH
65.4%
MECHANICAL MATCH
No shared data
OVERALL
65%
Specifications
Property GB/T 3077 25Cr2MoV ASTM A681 P20
Standard GB/T 3077:2015 ASTM A681:2008
Category Alloy Steel Tool & Die Steels
C (%) 0.22-0.29 0.28-0.40
Si (%) 0.17-0.37 0.20-0.80
Mn (%) 0.40-0.70 0.60-1.00
Cr (%) 1.50-1.80 1.40-2.00
Mo (%) 0.25-0.35 0.30-0.55
V (%) 0.15-0.30 Not specified
P (%) <=0.030 <=0.030
S (%) <=0.030 <=0.030
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 25Cr2MoV ASTM A681 P20
Tensile Strength >=930 MPa Not specified
Yield Strength >=785 MPa Not specified
Elongation >=14% Not specified
Hardness <=241 HB Not specified
Condition Quenched and tempered, test sample 25 mm; hardness is for bars delivered annealed or high temperature tempered Not specified
Typical Applications
GB/T 3077 25Cr2MoV
Hot-rolled or forged structural alloy steel bars
ASTM A681 P20
Tools, dies and fixtures (clause 1.2)
Key Differences
Can GB/T 3077 25Cr2MoV Be Substituted With ASTM A681 P20?
GB/T 3077 25Cr2MoV and ASTM A681 P20 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.
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GB/T 3077 25Cr2MoV
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ASTM A681 P20
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Frequently Asked Questions
What is the difference between GB/T 3077 25Cr2MoV and ASTM A681 P20?
Different category: GB/T 3077 25Cr2MoV is Alloy Steel, ASTM A681 P20 is Tool & Die Steels. GB/T 3077 25Cr2MoV specifies V, Cu which are not specified for ASTM A681 P20.
Can GB/T 3077 25Cr2MoV be substituted with ASTM A681 P20?
GB/T 3077 25Cr2MoV and ASTM A681 P20 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.