Post Stock Login Register

JIS G4102 SNC415 vs BS 970 (Part 3) 635M15

Close Alternative — 78% match based on chemical composition and mechanical property overlap.

JIS G4102 SNC415 (JIS G 4102:1979) and BS 970 (Part 3) 635M15 (BS 970 (Part 3):1991) are both steel grades. Both fall under the Alloy Steel category. JIS G4102 SNC415 is typically used for heavily loaded gears, cams, camshafts, while BS 970 (Part 3) 635M15 is commonly used for bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; alloy case hardening steel (table 15). JIS G4102 SNC415 is defined under Japanese Industrial Standards (JIS), originating from Japan, while BS 970 (Part 3) 635M15 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, JIS G4102 SNC415 vs BS 970 (Part 3) 635M15 is a 78% 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 78%.

Frequently Compared With JIS G4102 SNC415:
NF A35-565 100C6 GB/T 3077 12Cr2Ni4A GOST 4543 12HN3A UNI 11234 100Cr6 IS 1570 (Part 4) 07Cr4Mo6 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 10Cr20Mo6 IS 4367 10Cr9Mo10 IS 1570 (Part 7) 10Cr36Mo10H
Match Breakdown
CHEMISTRY MATCH
78%
MECHANICAL MATCH
No shared data
OVERALL
78%
Specifications
Property JIS G4102 SNC415 BS 970 (Part 3) 635M15
Standard JIS G 4102:1979 BS 970 (Part 3):1991
Category Alloy Steel Alloy Steel
C (%) 0.12–0.18 0.12-0.18
Si (%) 0.15–0.35 0.10-0.40
Mn (%) 0.35–0.65 0.60-0.90
Cr (%) 0.60–1.00 0.4-0.80
Ni (%) 2.00–2.50 0.70-1.10
P (%) ≤0.030 <=0.04
S (%) ≤0.030 <=0.05
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property JIS G4102 SNC415 BS 970 (Part 3) 635M15
Tensile Strength ≥830 MPa Not specified
Case Hardness HRC 58–62 Not specified
Typical Applications
JIS G4102 SNC415
Heavily loaded gears, cams, camshafts
BS 970 (Part 3) 635M15
Bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; alloy case hardening steel (Table 15)
Can JIS G4102 SNC415 Be Substituted With BS 970 (Part 3) 635M15?
JIS G4102 SNC415 and BS 970 (Part 3) 635M15 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
JIS G4102 SNC415
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 5400–6000 mm (212.6–236.22 in)
BS 970 (Part 3) 635M15
No active listings currently.
On M-EX Right Now
JIS G4102 SNC415
2 active listings and RFQs →
BS 970 (Part 3) 635M15
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between JIS G4102 SNC415 and BS 970 (Part 3) 635M15?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can JIS G4102 SNC415 be substituted with BS 970 (Part 3) 635M15?
JIS G4102 SNC415 and BS 970 (Part 3) 635M15 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.