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GB/T 3077 20CrMnMo vs KS D3867 SCM415

Close Alternative — 81.4% match based on chemical composition and mechanical property overlap.

GB/T 3077 20CrMnMo (GB/T 3077:2015) and KS D3867 SCM415 (KS D 3867:2025) are both steel grades. Both fall under the Alloy Steel category. GB/T 3077 20CrMnMo is typically used for hot-rolled or forged structural alloy steel bars, while KS D3867 SCM415 is commonly used for gears, shafts, camshafts, piston pins, precision machine components requiring hard surface and tough core.. GB/T 3077 20CrMnMo is defined under Guobiao Standards (GB/T), originating from China, while KS D3867 SCM415 is defined under Korean Industrial Standards (KS), originating from South Korea.

As per chemical composition, GB/T 3077 20CrMnMo vs KS D3867 SCM415 is a 81.4% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a close alternative overall at 81.4%.

Frequently Compared With GB/T 3077 20CrMnMo:
IS 1570 (Part 7) 10Mo6H UNI 11234 100Cr6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10 IS 1570 (Part 4) 10Mo6 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 NF A35-565 100C6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 105Cr5
Match Breakdown
CHEMISTRY MATCH
81.4%
MECHANICAL MATCH
No shared data
OVERALL
81.4%
Specifications
Property GB/T 3077 20CrMnMo KS D3867 SCM415
Standard GB/T 3077:2015 KS D 3867:2025
Category Alloy Steel Alloy Steel
C (%) 0.17-0.23 0.17-0.23
Si (%) 0.17-0.37 0.1-0.35
Mn (%) 0.90-1.20 0.6-1.2
Cr (%) 1.10-1.40 0.15-0.35
Mo (%) 0.20-0.30 0.15-0.3
P (%) <=0.030 max 0.03
S (%) <=0.030 max 0.03
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 20CrMnMo KS D3867 SCM415
Tensile Strength >=1180 MPa Not specified
Yield Strength >=885 MPa Not specified
Elongation >=10% Not specified
Hardness <=217 HB Not specified
Condition Quenched and tempered, test sample 15 mm; hardness is for bars delivered annealed or high temperature tempered Not specified
Typical Applications
GB/T 3077 20CrMnMo
Hot-rolled or forged structural alloy steel bars
KS D3867 SCM415
Gears, shafts, camshafts, piston pins, precision machine components requiring hard surface and tough core.
Key Differences
Can GB/T 3077 20CrMnMo Be Substituted With KS D3867 SCM415?
GB/T 3077 20CrMnMo and KS D3867 SCM415 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.
Forms & Sizes Available on M-EX
GB/T 3077 20CrMnMo
No active listings currently.
KS D3867 SCM415
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 5200–5700 mm (204.72–224.41 in)
On M-EX Right Now
GB/T 3077 20CrMnMo
0 active listings and RFQs →
KS D3867 SCM415
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between GB/T 3077 20CrMnMo and KS D3867 SCM415?
GB/T 3077 20CrMnMo specifies Cu which is not specified for KS D3867 SCM415.
Can GB/T 3077 20CrMnMo be substituted with KS D3867 SCM415?
GB/T 3077 20CrMnMo and KS D3867 SCM415 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.