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GB/T 3077 30CrNi3 vs JIS G4102 SNC815

Related Material — 67.8% match based on chemical composition and mechanical property overlap.

GB/T 3077 30CrNi3 (GB/T 3077:2015) and JIS G4102 SNC815 (JIS G 4102:1979) are both steel grades. Both fall under the Alloy Steel category. GB/T 3077 30CrNi3 is typically used for hot-rolled or forged structural alloy steel bars, while JIS G4102 SNC815 is commonly used for heavily stressed gears, differential components. GB/T 3077 30CrNi3 is defined under Guobiao Standards (GB/T), originating from China, while JIS G4102 SNC815 is defined under Japanese Industrial Standards (JIS), originating from Japan.

As per chemical composition, GB/T 3077 30CrNi3 vs JIS G4102 SNC815 is a 76.7% match. As per mechanical properties, the match is 50%. Combined, this makes them a related material overall at 67.8%.

Frequently Compared With GB/T 3077 30CrNi3:
IS 1570 (Part 7) 10Mo6H IS 1570 (Part 4) 07Cr4Mo6 UNI 11234 100Cr6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 105Cr5 EN 10028-2 10CrMo9-10 IS 1570 (Part 4) 10Mo6 IS 4367 07Cr4Mo6 NF A35-565 100C6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H
Match Breakdown
CHEMISTRY MATCH
76.7%
MECHANICAL MATCH
50%
OVERALL
67.8%
Specifications
Property GB/T 3077 30CrNi3 JIS G4102 SNC815
Standard GB/T 3077:2015 JIS G 4102:1979
Category Alloy Steel Alloy Steel
C (%) 0.27-0.33 0.12–0.18
Si (%) 0.17-0.37 0.15–0.35
Mn (%) 0.30-0.60 0.30–0.60
Cr (%) 0.60-0.90 0.60–1.00
Ni (%) 2.75-3.15 3.00–3.50
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 30CrNi3 JIS G4102 SNC815
Tensile Strength >=980 MPa ≥980 MPa
Yield Strength >=785 MPa Not specified
Elongation >=9% Not specified
Hardness <=241 HB Not specified
Condition Quenched and tempered, test sample 25 mm; hardness is for bars delivered annealed or high temperature tempered Not specified
Case Hardness HRC Not specified 60–65
Typical Applications
GB/T 3077 30CrNi3
Hot-rolled or forged structural alloy steel bars
JIS G4102 SNC815
Heavily stressed gears, differential components
Key Differences
Can GB/T 3077 30CrNi3 Be Substituted With JIS G4102 SNC815?
GB/T 3077 30CrNi3 and JIS G4102 SNC815 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 30CrNi3
No active listings currently.
JIS G4102 SNC815
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 4900–5900 mm (192.91–232.28 in)
On M-EX Right Now
GB/T 3077 30CrNi3
0 active listings and RFQs →
JIS G4102 SNC815
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between GB/T 3077 30CrNi3 and JIS G4102 SNC815?
GB/T 3077 30CrNi3 specifies Cu which is not specified for JIS G4102 SNC815.
Can GB/T 3077 30CrNi3 be substituted with JIS G4102 SNC815?
GB/T 3077 30CrNi3 and JIS G4102 SNC815 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.