Post Stock Login Register

GB/T 3077 42SiMn vs BS 970 (Part 1) 170H41

Close Alternative — 75.5% match based on chemical composition and mechanical property overlap.

GB/T 3077 42SiMn (GB/T 3077:2015) and BS 970 (Part 1) 170H41 (BS 970 (Part 1):1991) are both steel grades. Both fall under the Alloy Steel category. GB/T 3077 42SiMn is typically used for hot-rolled or forged structural alloy steel bars, while BS 970 (Part 1) 170H41 is commonly used for through hardening boron steel (section three). GB/T 3077 42SiMn is defined under Guobiao Standards (GB/T), originating from China, while BS 970 (Part 1) 170H41 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, GB/T 3077 42SiMn vs BS 970 (Part 1) 170H41 is a 75.5% 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 75.5%.

Frequently Compared With GB/T 3077 42SiMn:
IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 NF A35-565 100C6 UNI 11234 100Cr6 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 IS 1570 (Part 4) 10Mo6
Match Breakdown
CHEMISTRY MATCH
75.5%
MECHANICAL MATCH
No shared data
OVERALL
75.5%
Specifications
Property GB/T 3077 42SiMn BS 970 (Part 1) 170H41
Standard GB/T 3077:2015 BS 970 (Part 1):1991
Category Alloy Steel Alloy Steel
C (%) 0.39-0.45 0.37-0.44
Si (%) 1.10-1.40 Not specified
Mn (%) 1.10-1.40 0.80-1.10
P (%) <=0.030 Not specified
S (%) <=0.030 Not specified
Cu (%) <=0.30 Not specified
B (%) Not specified 0.0005-0.005
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 42SiMn BS 970 (Part 1) 170H41
Tensile Strength >=885 MPa Not specified
Yield Strength >=735 MPa Not specified
Elongation >=15% Not specified
Hardness <=229 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 42SiMn
Hot-rolled or forged structural alloy steel bars
BS 970 (Part 1) 170H41
Through hardening boron steel (section three)
Key Differences
Can GB/T 3077 42SiMn Be Substituted With BS 970 (Part 1) 170H41?
GB/T 3077 42SiMn and BS 970 (Part 1) 170H41 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
GB/T 3077 42SiMn
0 active listings and RFQs →
BS 970 (Part 1) 170H41
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between GB/T 3077 42SiMn and BS 970 (Part 1) 170H41?
GB/T 3077 42SiMn specifies Si, P, S, Cu which are not specified for BS 970 (Part 1) 170H41. BS 970 (Part 1) 170H41 specifies B which is not specified for GB/T 3077 42SiMn.
Can GB/T 3077 42SiMn be substituted with BS 970 (Part 1) 170H41?
GB/T 3077 42SiMn and BS 970 (Part 1) 170H41 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.