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KS D3867 SCM415 vs GOST 4543 12HN3A

Minimal Match — 35% match based on chemical composition and mechanical property overlap.

KS D3867 SCM415 (KS D 3867:2025) and GOST 4543 12HN3A (GOST 4543-2016) are both steel grades. Both fall under the Alloy Steel category. KS D3867 SCM415 is typically used for gears, shafts, camshafts, piston pins, precision machine components requiring hard surface and tough core., while GOST 4543 12HN3A is commonly used for used for gears, pinions, crankshafts, aircraft parts, and transmission components.. KS D3867 SCM415 is defined under Korean Industrial Standards (KS) (South Korea).

As per chemical composition, KS D3867 SCM415 vs GOST 4543 12HN3A is a 55.8% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With KS D3867 SCM415:
UNI 11234 100Cr6 NF A35-565 100C6 IS 1570 (Part 7) 12Cr4Mo5H IS 11169 (Part 1) 12Cr4Mo2 GB/T 3077 12Cr2Ni4A IS 1570 (Part 7) 12Cr9Mo10H IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 7) 10Mo6H IS 1570 (Part 4) 07Cr4Mo6 IS 4367 07Cr4Mo6
Match Breakdown
CHEMISTRY MATCH
55.8%
MECHANICAL MATCH
No shared data
OVERALL
35%
Specifications
Property KS D3867 SCM415 GOST 4543 12HN3A
Standard KS D 3867:2025 GOST 4543-2016
Category Alloy Steel Alloy Steel
C (%) 0.17-0.23 0.09-0.16
Mn (%) 0.6-1.2 0.3-0.6
Si (%) 0.1-0.35 0.17-0.37
P (%) max 0.03 Not specified
S (%) max 0.03 Not specified
Cr (%) 0.15-0.35 0.6-0.9
Mo (%) 0.15-0.3 Not specified
Ni (%) Not specified 2.75-3.15
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property KS D3867 SCM415 GOST 4543 12HN3A
Tensile Strength Not specified 850-1050 MPa
Yield Strength Not specified 685 MPa min
Elongation Not specified 11% min
Hardness Not specified 58-62 HRC (case)
Typical Applications
KS D3867 SCM415
Gears, shafts, camshafts, piston pins, precision machine components requiring hard surface and tough core.
GOST 4543 12HN3A
Used for gears, pinions, crankshafts, aircraft parts, and transmission components.
Key Differences
Can KS D3867 SCM415 Be Substituted With GOST 4543 12HN3A?
KS D3867 SCM415 and GOST 4543 12HN3A 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
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)
GOST 4543 12HN3A
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 5600–6600 mm (220.47–259.84 in)
On M-EX Right Now
KS D3867 SCM415
2 active listings and RFQs →
GOST 4543 12HN3A
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between KS D3867 SCM415 and GOST 4543 12HN3A?
KS D3867 SCM415 specifies P, S, Mo which are not specified for GOST 4543 12HN3A. GOST 4543 12HN3A specifies Ni which is not specified for KS D3867 SCM415.
Can KS D3867 SCM415 be substituted with GOST 4543 12HN3A?
KS D3867 SCM415 and GOST 4543 12HN3A 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.