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GB/T 3077 35Cr2Ni4Mo vs GB/T 3077 30Cr2Ni2Mo

Related Material — 66.7% match based on chemical composition and mechanical property overlap.

GB/T 3077 35Cr2Ni4Mo (GB/T 3077:2015) and GB/T 3077 30Cr2Ni2Mo (GB/T 3077:2015) are both steel grades. Both fall under the Alloy Steel category. GB/T 3077 35Cr2Ni4Mo is typically used for hot-rolled or forged structural alloy steel bars, while GB/T 3077 30Cr2Ni2Mo is commonly used for hot-rolled or forged structural alloy steel bars. GB/T 3077 35Cr2Ni4Mo is defined under Guobiao Standards (GB/T), originating from China, while GB/T 3077 30Cr2Ni2Mo is defined under Guobiao Standards (GB/T), originating from China.

As per chemical composition, GB/T 3077 35Cr2Ni4Mo vs GB/T 3077 30Cr2Ni2Mo is a 75% match. As per mechanical properties, the match is 50%. Combined, this makes them a related material overall at 66.7%.

Frequently Compared With GB/T 3077 35Cr2Ni4Mo:
IS 4367 07Cr4Mo6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 4) 10Mo6 IS 1570 (Part 7) 10Mo6H IS 1570 (Part 4) 07Cr4Mo6 NF A35-565 100C6 UNI 11234 100Cr6 IS 1570 (Part 4) 105Cr5 IS 4367 10Cr9Mo10 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 7) 10Cr36Mo10H
Match Breakdown
CHEMISTRY MATCH
75%
MECHANICAL MATCH
50%
OVERALL
66.7%
Specifications
Property GB/T 3077 35Cr2Ni4Mo GB/T 3077 30Cr2Ni2Mo
Standard GB/T 3077:2015 GB/T 3077:2015
Category Alloy Steel Alloy Steel
C (%) 0.32-0.39 0.26-0.34
Si (%) 0.17-0.37 0.17-0.37
Mn (%) 0.50-0.80 0.50-0.80
Cr (%) 1.60-2.00 1.80-2.20
Mo (%) 0.25-0.45 0.30-0.50
Ni (%) 3.60-4.10 1.80-2.20
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 35Cr2Ni4Mo GB/T 3077 30Cr2Ni2Mo
Tensile Strength >=1130 MPa >=980 MPa
Yield Strength >=980 MPa >=835 MPa
Elongation >=10% >=10%
Hardness <=269 HB <=269 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 35Cr2Ni4Mo
Hot-rolled or forged structural alloy steel bars
GB/T 3077 30Cr2Ni2Mo
Hot-rolled or forged structural alloy steel bars
Can GB/T 3077 35Cr2Ni4Mo Be Substituted With GB/T 3077 30Cr2Ni2Mo?
GB/T 3077 35Cr2Ni4Mo and GB/T 3077 30Cr2Ni2Mo share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.
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GB/T 3077 35Cr2Ni4Mo
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GB/T 3077 30Cr2Ni2Mo
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Frequently Asked Questions
What is the difference between GB/T 3077 35Cr2Ni4Mo and GB/T 3077 30Cr2Ni2Mo?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can GB/T 3077 35Cr2Ni4Mo be substituted with GB/T 3077 30Cr2Ni2Mo?
GB/T 3077 35Cr2Ni4Mo and GB/T 3077 30Cr2Ni2Mo share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.