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GB/T 3077 30Cr2Ni2Mo vs JIS G4053 SNCM240

Related Material — 66.3% match based on chemical composition and mechanical property overlap.

GB/T 3077 30Cr2Ni2Mo (GB/T 3077:2015) and JIS G4053 SNCM240 (JIS G4053:2008) are both steel grades. Both fall under the Alloy Steel category. GB/T 3077 30Cr2Ni2Mo is typically used for hot-rolled or forged structural alloy steel bars, while JIS G4053 SNCM240 is commonly used for nickel-chromium-molybdenum case-hardening (carburizing) steel, higher carbon variant than sncm220; gears, shafts, and highly stressed transmission components requiring wear-resistant carburized surface and tough core. GB/T 3077 30Cr2Ni2Mo is defined under Guobiao Standards (GB/T), originating from China, while JIS G4053 SNCM240 is defined under Japanese Industrial Standards (JIS), originating from Japan.

As per chemical composition, GB/T 3077 30Cr2Ni2Mo vs JIS G4053 SNCM240 is a 61.9% match. As per mechanical properties, the match is 75%. Combined, this makes them a related material overall at 66.3%.

Frequently Compared With GB/T 3077 30Cr2Ni2Mo:
IS 1570 (Part 7) 10Mo6H 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
Match Breakdown
CHEMISTRY MATCH
61.9%
MECHANICAL MATCH
75%
OVERALL
66.3%
Specifications
Property GB/T 3077 30Cr2Ni2Mo JIS G4053 SNCM240
Standard GB/T 3077:2015 JIS G4053:2008
Category Alloy Steel Alloy Steel
C (%) 0.26-0.34 0.37-0.43
Si (%) 0.17-0.37 0.15-0.35
Mn (%) 0.50-0.80 0.60-0.90
Cr (%) 1.80-2.20 0.40-0.80
Mo (%) 0.30-0.50 0.15-0.30
Ni (%) 1.80-2.20 1.50-2.00
P (%) <=0.030 <=0.030
S (%) <=0.030 <=0.030
Cu (%) <=0.30 Not specified
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 30Cr2Ni2Mo JIS G4053 SNCM240
Tensile Strength >=980 MPa 980 MPa min
Yield Strength >=835 MPa 835 MPa min
Elongation >=10% 10% min
Hardness <=269 HB 285-352 HB
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 30Cr2Ni2Mo
Hot-rolled or forged structural alloy steel bars
JIS G4053 SNCM240
Nickel-chromium-molybdenum case-hardening (carburizing) steel, higher carbon variant than SNCM220; gears, shafts, and highly stressed transmission components requiring wear-resistant carburized surface and tough core
Key Differences
Can GB/T 3077 30Cr2Ni2Mo Be Substituted With JIS G4053 SNCM240?
GB/T 3077 30Cr2Ni2Mo and JIS G4053 SNCM240 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.
Forms & Sizes Available on M-EX
GB/T 3077 30Cr2Ni2Mo
No active listings currently.
JIS G4053 SNCM240
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 6300–6300 mm (248.03–248.03 in)
On M-EX Right Now
GB/T 3077 30Cr2Ni2Mo
0 active listings and RFQs →
JIS G4053 SNCM240
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between GB/T 3077 30Cr2Ni2Mo and JIS G4053 SNCM240?
GB/T 3077 30Cr2Ni2Mo specifies Cu which is not specified for JIS G4053 SNCM240.
Can GB/T 3077 30Cr2Ni2Mo be substituted with JIS G4053 SNCM240?
GB/T 3077 30Cr2Ni2Mo and JIS G4053 SNCM240 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.