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

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

GB/T 3077 35SiMn (GB/T 3077:2015) and GB/T 3077 42SiMn (GB/T 3077:2015) are both steel grades. Both fall under the Alloy Steel category. GB/T 3077 35SiMn is typically used for hot-rolled or forged structural alloy steel bars, while GB/T 3077 42SiMn is commonly used for hot-rolled or forged structural alloy steel bars. GB/T 3077 35SiMn is defined under Guobiao Standards (GB/T), originating from China, while GB/T 3077 42SiMn is defined under Guobiao Standards (GB/T), originating from China.

As per chemical composition, GB/T 3077 35SiMn vs GB/T 3077 42SiMn 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 35SiMn:
IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 7) 10Cr36Mo10H IS 1570 (Part 7) 10Mo6H IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 NF A35-565 100C6 UNI 11234 100Cr6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 10Cr20Mo6 IS 4367 10Cr9Mo10 EN 10028-2 10CrMo9-10
Match Breakdown
CHEMISTRY MATCH
92.1%
MECHANICAL MATCH
100%
OVERALL
94.7%
Specifications
Property GB/T 3077 35SiMn GB/T 3077 42SiMn
Standard GB/T 3077:2015 GB/T 3077:2015
Category Alloy Steel Alloy Steel
C (%) 0.32-0.40 0.39-0.45
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 35SiMn GB/T 3077 42SiMn
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 35SiMn
Hot-rolled or forged structural alloy steel bars
GB/T 3077 42SiMn
Hot-rolled or forged structural alloy steel bars
Can GB/T 3077 35SiMn Be Substituted With GB/T 3077 42SiMn?
GB/T 3077 35SiMn and GB/T 3077 42SiMn overlap closely enough on chemistry and mechanical properties that GB/T 3077 42SiMn is often considered as a substitute for GB/T 3077 35SiMn 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 35SiMn
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GB/T 3077 42SiMn
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Frequently Asked Questions
What is the difference between GB/T 3077 35SiMn and GB/T 3077 42SiMn?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can GB/T 3077 35SiMn be substituted with GB/T 3077 42SiMn?
GB/T 3077 35SiMn and GB/T 3077 42SiMn overlap closely enough on chemistry and mechanical properties that GB/T 3077 42SiMn is often considered as a substitute for GB/T 3077 35SiMn in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.