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JIS G4104 SCr415 vs BS 970 (Part 1) 590H17

Close Alternative — 80.6% match based on chemical composition and mechanical property overlap.

JIS G4104 SCr415 (JIS G 4104:1979) and BS 970 (Part 1) 590H17 (BS 970 (Part 1):1991) are both steel grades. Both fall under the Alloy Steel category. JIS G4104 SCr415 is typically used for case hardened gears, cams, pins, while BS 970 (Part 1) 590H17 is commonly used for case hardening steel (section four). JIS G4104 SCr415 is defined under Japanese Industrial Standards (JIS), originating from Japan, while BS 970 (Part 1) 590H17 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, JIS G4104 SCr415 vs BS 970 (Part 1) 590H17 is a 80.6% 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 80.6%.

Frequently Compared With JIS G4104 SCr415:
NF A35-565 100C6 UNI 11234 100Cr6 GOST 4543 12HN3A GB/T 3077 12Cr2Ni4A IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 10Cr20Mo6 IS 4367 10Cr9Mo10 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 105Cr5 IS 4367 07Cr4Mo6 IS 1570 (Part 7) 10Cr36Mo10H
Match Breakdown
CHEMISTRY MATCH
80.6%
MECHANICAL MATCH
No shared data
OVERALL
80.6%
Specifications
Property JIS G4104 SCr415 BS 970 (Part 1) 590H17
Standard JIS G 4104:1979 BS 970 (Part 1):1991
Category Alloy Steel Alloy Steel
C (%) 0.13–0.18 0.14-0.20
Si (%) 0.15–0.35 Not specified
Mn (%) 0.60–0.90 1.00-1.30
Cr (%) 0.90–1.20 0.80-1.10
P (%) ≤0.030 Not specified
S (%) ≤0.030 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 JIS G4104 SCr415 BS 970 (Part 1) 590H17
Tensile Strength ≥735 MPa Not specified
Case Hardness HRC 56–62 Not specified
Typical Applications
JIS G4104 SCr415
Case hardened gears, cams, pins
BS 970 (Part 1) 590H17
Case hardening steel (section four)
Key Differences
Can JIS G4104 SCr415 Be Substituted With BS 970 (Part 1) 590H17?
JIS G4104 SCr415 and BS 970 (Part 1) 590H17 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 G4104 SCr415
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 5600–5700 mm (220.47–224.41 in)
BS 970 (Part 1) 590H17
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On M-EX Right Now
JIS G4104 SCr415
2 active listings and RFQs →
BS 970 (Part 1) 590H17
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Frequently Asked Questions
What is the difference between JIS G4104 SCr415 and BS 970 (Part 1) 590H17?
JIS G4104 SCr415 specifies Si, P, S which are not specified for BS 970 (Part 1) 590H17.
Can JIS G4104 SCr415 be substituted with BS 970 (Part 1) 590H17?
JIS G4104 SCr415 and BS 970 (Part 1) 590H17 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.