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GB/T 3077 25Cr2Ni4W vs BS 970 EN51

Related Material — 62.4% match based on chemical composition and mechanical property overlap.

GB/T 3077 25Cr2Ni4W (GB/T 3077:2015) and BS 970 EN51 (BS 970:1955) are both steel grades. GB/T 3077 25Cr2Ni4W is classified under Alloy Steel, while BS 970 EN51 is classified under Stainless Steel — a different category, which is worth noting alongside the chemistry match below. GB/T 3077 25Cr2Ni4W is typically used for hot-rolled or forged structural alloy steel bars, while BS 970 EN51 is commonly used for bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars.. GB/T 3077 25Cr2Ni4W is defined under Guobiao Standards (GB/T), originating from China, while BS 970 EN51 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, GB/T 3077 25Cr2Ni4W vs BS 970 EN51 is a 62.4% 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 62.4%.

Frequently Compared With GB/T 3077 25Cr2Ni4W:
IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 NF A35-565 100C6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10 IS 1570 (Part 4) 10Mo6 UNI 11234 100Cr6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 10Cr20Mo6 EN 10028-2 10CrMo9-10
Match Breakdown
CHEMISTRY MATCH
62.4%
MECHANICAL MATCH
No shared data
OVERALL
62.4%
Specifications
Property GB/T 3077 25Cr2Ni4W BS 970 EN51
Standard GB/T 3077:2015 BS 970:1955
Category Alloy Steel Stainless Steel
C (%) 0.21-0.28 0.25-0.35
Si (%) 0.17-0.37 0.10-0.35
Mn (%) 0.30-0.60 0.35-0.75
Cr (%) 1.35-1.65 <=0.30
Ni (%) 4.00-4.50 2.75-3.25
W (%) 0.80-1.20 Not specified
P (%) <=0.030 <=0.050
S (%) <=0.030 <=0.050
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 25Cr2Ni4W BS 970 EN51
Tensile Strength >=1080 MPa Not specified
Yield Strength >=930 MPa Not specified
Elongation >=11% Not specified
Hardness <=269 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 25Cr2Ni4W
Hot-rolled or forged structural alloy steel bars
BS 970 EN51
Bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars.
Key Differences
Can GB/T 3077 25Cr2Ni4W Be Substituted With BS 970 EN51?
GB/T 3077 25Cr2Ni4W and BS 970 EN51 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.
On M-EX Right Now
GB/T 3077 25Cr2Ni4W
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BS 970 EN51
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Frequently Asked Questions
What is the difference between GB/T 3077 25Cr2Ni4W and BS 970 EN51?
Different category: GB/T 3077 25Cr2Ni4W is Alloy Steel, BS 970 EN51 is Stainless Steel. GB/T 3077 25Cr2Ni4W specifies W, Cu which are not specified for BS 970 EN51.
Can GB/T 3077 25Cr2Ni4W be substituted with BS 970 EN51?
GB/T 3077 25Cr2Ni4W and BS 970 EN51 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.