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BS 970 (Part 1) 835M30 vs GB/T 3077 30Cr2Ni4Mo

Close Alternative — 70.5% match based on chemical composition and mechanical property overlap.

BS 970 (Part 1) 835M30 (BS 970 (Part 1):1983) and GB/T 3077 30Cr2Ni4Mo (GB/T 3077:2015) are both steel grades. Both fall under the Alloy Steel category. BS 970 (Part 1) 835M30 is typically used for through hardening steel for mechanical and allied engineering purposes; supplied in the hardened and tempered conditions of table 6., while GB/T 3077 30Cr2Ni4Mo is commonly used for hot-rolled or forged structural alloy steel bars. BS 970 (Part 1) 835M30 is defined under British Standards (BS), originating from United Kingdom, while GB/T 3077 30Cr2Ni4Mo is defined under Guobiao Standards (GB/T), originating from China.

As per chemical composition, BS 970 (Part 1) 835M30 vs GB/T 3077 30Cr2Ni4Mo is a 70.5% 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 70.5%.

Frequently Compared With BS 970 (Part 1) 835M30:
IS 1570 (Part 4) 10Mo6 IS 1570 (Part 4) 103Cr6 IS 4367 10Cr9Mo10 NF A35-565 100C6 UNI 11234 100Cr6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 10Cr20Mo6 IS 11169 (Part 1) 10Ni5Cr4 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 7) 10Cr36Mo10H
Match Breakdown
CHEMISTRY MATCH
70.5%
MECHANICAL MATCH
No shared data
OVERALL
70.5%
Specifications
Property BS 970 (Part 1) 835M30 GB/T 3077 30Cr2Ni4Mo
Standard BS 970 (Part 1):1983 GB/T 3077:2015
Category Alloy Steel Alloy Steel
C (%) 0.26-0.34 0.26-0.33
Mn (%) 0.45-0.70 0.50-0.80
P (%) <=0.025 <=0.030
S (%) <=0.025 <=0.030
Cr (%) 1.10-1.40 1.20-1.50
Mo (%) 0.20-0.35 0.30-0.60
Ni (%) 3.90-4.30 3.30-4.30
Si (%) Not specified 0.17-0.37
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 1) 835M30 GB/T 3077 30Cr2Ni4Mo
Tensile Strength Not specified >=1080 MPa
Yield Strength Not specified >=930 MPa
Elongation Not specified >=10%
Hardness Not specified <=269 HB
Condition Not specified Quenched and tempered, test sample 25 mm; hardness is for bars delivered annealed or high temperature tempered
Typical Applications
BS 970 (Part 1) 835M30
Through hardening steel for mechanical and allied engineering purposes; supplied in the hardened and tempered conditions of Table 6.
GB/T 3077 30Cr2Ni4Mo
Hot-rolled or forged structural alloy steel bars
Key Differences
Can BS 970 (Part 1) 835M30 Be Substituted With GB/T 3077 30Cr2Ni4Mo?
BS 970 (Part 1) 835M30 and GB/T 3077 30Cr2Ni4Mo 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 1) 835M30
0 active listings and RFQs →
GB/T 3077 30Cr2Ni4Mo
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 (Part 1) 835M30 and GB/T 3077 30Cr2Ni4Mo?
GB/T 3077 30Cr2Ni4Mo specifies Si, Cu which are not specified for BS 970 (Part 1) 835M30.
Can BS 970 (Part 1) 835M30 be substituted with GB/T 3077 30Cr2Ni4Mo?
BS 970 (Part 1) 835M30 and GB/T 3077 30Cr2Ni4Mo 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.