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GB/T 3077 42SiMn vs GB/T 3077 35SiMn

Strong Match — 94.7% match based on chemical composition and mechanical property overlap.

GB/T 3077 42SiMn (GB/T 3077:2015) and GB/T 3077 35SiMn (GB/T 3077:2015) 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 GB/T 3077 35SiMn is commonly used for hot-rolled or forged structural alloy steel bars. GB/T 3077 42SiMn is defined under Guobiao Standards (GB/T), originating from China, while GB/T 3077 35SiMn is defined under Guobiao Standards (GB/T), originating from China.

As per chemical composition, GB/T 3077 42SiMn vs GB/T 3077 35SiMn is a 92.1% match. As per mechanical properties, the match is 100%. Combined, this makes them a strong match overall at 94.7%.

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
92.1%
MECHANICAL MATCH
100%
OVERALL
94.7%
Specifications
Property GB/T 3077 42SiMn GB/T 3077 35SiMn
Standard GB/T 3077:2015 GB/T 3077:2015
Category Alloy Steel Alloy Steel
C (%) 0.39-0.45 0.32-0.40
Si (%) 1.10-1.40 1.10-1.40
Mn (%) 1.10-1.40 1.10-1.40
P (%) <=0.030 <=0.030
S (%) <=0.030 <=0.030
Cu (%) <=0.30 <=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 GB/T 3077 42SiMn GB/T 3077 35SiMn
Tensile Strength >=885 MPa >=885 MPa
Yield Strength >=735 MPa >=735 MPa
Elongation >=15% >=15%
Hardness <=229 HB <=229 HB
Condition Quenched and tempered, test sample 25 mm; hardness is for bars delivered annealed or high temperature tempered Quenched and tempered, test sample 25 mm; hardness is for bars delivered annealed or high temperature tempered
Typical Applications
GB/T 3077 42SiMn
Hot-rolled or forged structural alloy steel bars
GB/T 3077 35SiMn
Hot-rolled or forged structural alloy steel bars
Can GB/T 3077 42SiMn Be Substituted With GB/T 3077 35SiMn?
GB/T 3077 42SiMn and GB/T 3077 35SiMn overlap closely enough on chemistry and mechanical properties that GB/T 3077 35SiMn is often considered as a substitute for GB/T 3077 42SiMn in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
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GB/T 3077 42SiMn
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GB/T 3077 35SiMn
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Frequently Asked Questions
What is the difference between GB/T 3077 42SiMn and GB/T 3077 35SiMn?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can GB/T 3077 42SiMn be substituted with GB/T 3077 35SiMn?
GB/T 3077 42SiMn and GB/T 3077 35SiMn overlap closely enough on chemistry and mechanical properties that GB/T 3077 35SiMn is often considered as a substitute for GB/T 3077 42SiMn in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.