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BS 970 (Part 3) 637M17 vs GB/T 3077 12CrNi2

Close Alternative — 71.4% match based on chemical composition and mechanical property overlap.

BS 970 (Part 3) 637M17 (BS 970 (Part 3):1991) and GB/T 3077 12CrNi2 (GB/T 3077:2015) are both steel grades. Both fall under the Alloy Steel category. BS 970 (Part 3) 637M17 is typically used for bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; alloy case hardening steel (table 15), while GB/T 3077 12CrNi2 is commonly used for hot-rolled or forged structural alloy steel bars. BS 970 (Part 3) 637M17 is defined under British Standards (BS), originating from United Kingdom, while GB/T 3077 12CrNi2 is defined under Guobiao Standards (GB/T), originating from China.

As per chemical composition, BS 970 (Part 3) 637M17 vs GB/T 3077 12CrNi2 is a 71.4% 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 71.4%.

Frequently Compared With BS 970 (Part 3) 637M17:
EN 10084 10NiCr5-4 IS 11169 (Part 1) 10Ni5Cr4 GOST 4543 12HN3A IS 4367 07Cr4Mo6 NF A35-565 100C6 UNI 11234 100Cr6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 105Cr5 IS 4367 10Cr9Mo10
Match Breakdown
CHEMISTRY MATCH
71.4%
MECHANICAL MATCH
No shared data
OVERALL
71.4%
Specifications
Property BS 970 (Part 3) 637M17 GB/T 3077 12CrNi2
Standard BS 970 (Part 3):1991 GB/T 3077:2015
Category Alloy Steel Alloy Steel
C (%) 0.14-0.20 0.10-0.17
Si (%) 0.10-0.40 0.17-0.37
Mn (%) 0.60-0.90 0.30-0.60
Cr (%) 0.60-1.00 0.60-0.90
Ni (%) 0.85-1.25 1.50-1.90
P (%) <=0.04 <=0.030
S (%) <=0.05 <=0.030
Cu (%) Not specified <=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 BS 970 (Part 3) 637M17 GB/T 3077 12CrNi2
Tensile Strength Not specified >=785 MPa
Yield Strength Not specified >=590 MPa
Elongation Not specified >=12%
Hardness Not specified <=207 HB
Condition Not specified Quenched and tempered, test sample 15 mm; hardness is for bars delivered annealed or high temperature tempered
Typical Applications
BS 970 (Part 3) 637M17
Bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; alloy case hardening steel (Table 15)
GB/T 3077 12CrNi2
Hot-rolled or forged structural alloy steel bars
Key Differences
Can BS 970 (Part 3) 637M17 Be Substituted With GB/T 3077 12CrNi2?
BS 970 (Part 3) 637M17 and GB/T 3077 12CrNi2 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.
On M-EX Right Now
BS 970 (Part 3) 637M17
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GB/T 3077 12CrNi2
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Frequently Asked Questions
What is the difference between BS 970 (Part 3) 637M17 and GB/T 3077 12CrNi2?
GB/T 3077 12CrNi2 specifies Cu which is not specified for BS 970 (Part 3) 637M17.
Can BS 970 (Part 3) 637M17 be substituted with GB/T 3077 12CrNi2?
BS 970 (Part 3) 637M17 and GB/T 3077 12CrNi2 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.