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BS 970 (Part 1) 530A40 vs JIS G4104 SCr440

Strong Match — 92% match based on chemical composition and mechanical property overlap.

BS 970 (Part 1) 530A40 (BS 970 (Part 1):1983) and JIS G4104 SCr440 (JIS G 4104:1979) are both steel grades. Both fall under the Alloy Steel category. BS 970 (Part 1) 530A40 is typically used for through hardening steel for mechanical and allied engineering purposes; supplied in the hardened and tempered conditions of table 6., while JIS G4104 SCr440 is commonly used for used in gears, shafts, bolts, spindles, couplings, and machine structural parts.. BS 970 (Part 1) 530A40 is defined under British Standards (BS), originating from United Kingdom, while JIS G4104 SCr440 is defined under Japanese Industrial Standards (JIS), originating from Japan.

As per chemical composition, BS 970 (Part 1) 530A40 vs JIS G4104 SCr440 is a 92% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a strong match overall at 92%.

Frequently Compared With BS 970 (Part 1) 530A40:
IS 4367 07Cr4Mo6 IS 1570 (Part 4) 103Cr4 NF A35-565 100C6 IS 1570 (Part 7) 10Cr36Mo10H IS 1570 (Part 4) 10Mo6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 10Cr20Mo6 IS 11169 (Part 1) 10Ni5Cr4 IS 1570 (Part 4) 07Cr4Mo6 UNI 11234 100Cr6 IS 1570 (Part 4) 105Cr5 IS 4367 10Cr9Mo10
Match Breakdown
CHEMISTRY MATCH
92%
MECHANICAL MATCH
No shared data
OVERALL
92%
Specifications
Property BS 970 (Part 1) 530A40 JIS G4104 SCr440
Standard BS 970 (Part 1):1983 JIS G 4104:1979
Category Alloy Steel Alloy Steel
C (%) 0.38-0.43 0.38-0.43
Mn (%) 0.60-0.80 0.60-0.85
Cr (%) 0.90-1.20 0.90-1.20
P (%) <=0.035 0.030 max
S (%) <=0.040 0.030 max
Si (%) Not specified 0.15-0.35
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property BS 970 (Part 1) 530A40 JIS G4104 SCr440
Tensile Strength Not specified 800-950 MPa
Yield Strength Not specified 590 MPa min
Elongation Not specified 13% min
Hardness Not specified 230-285 HB
Typical Applications
BS 970 (Part 1) 530A40
Through hardening steel for mechanical and allied engineering purposes; supplied in the hardened and tempered conditions of Table 6.
JIS G4104 SCr440
Used in gears, shafts, bolts, spindles, couplings, and machine structural parts.
Key Differences
Can BS 970 (Part 1) 530A40 Be Substituted With JIS G4104 SCr440?
BS 970 (Part 1) 530A40 and JIS G4104 SCr440 overlap closely enough on chemistry and mechanical properties that JIS G4104 SCr440 is often considered as a substitute for BS 970 (Part 1) 530A40 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
Forms & Sizes Available on M-EX
BS 970 (Part 1) 530A40
No active listings currently.
JIS G4104 SCr440
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 4500–6100 mm (177.17–240.16 in)
On M-EX Right Now
BS 970 (Part 1) 530A40
0 active listings and RFQs →
JIS G4104 SCr440
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 (Part 1) 530A40 and JIS G4104 SCr440?
JIS G4104 SCr440 specifies Si which is not specified for BS 970 (Part 1) 530A40.
Can BS 970 (Part 1) 530A40 be substituted with JIS G4104 SCr440?
BS 970 (Part 1) 530A40 and JIS G4104 SCr440 overlap closely enough on chemistry and mechanical properties that JIS G4104 SCr440 is often considered as a substitute for BS 970 (Part 1) 530A40 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.