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JIS G4053 SMn438 vs BS 970 (Part 1) 150M40

Strong Match — 89% match based on chemical composition and mechanical property overlap.

JIS G4053 SMn438 (JIS G4053:2008) and BS 970 (Part 1) 150M40 (BS 970 (Part 1):1983) are both steel grades. Both fall under the Carbon Steel category. JIS G4053 SMn438 is typically used for agricultural equipment, heavy duty shafts, while BS 970 (Part 1) 150M40 is commonly used for through hardening steel for mechanical and allied engineering purposes; supplied in the hardened and tempered conditions of table 6.. JIS G4053 SMn438 is defined under Japanese Industrial Standards (JIS), originating from Japan, while BS 970 (Part 1) 150M40 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, JIS G4053 SMn438 vs BS 970 (Part 1) 150M40 is a 89% 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 89%.

Frequently Compared With JIS G4053 SMn438:
BS 970 (Part 1) 040A10 BS 970 (Part 3) 070M55 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045A10 BS 970 (Part 1) 055M15 BS 970 (Part 3) 045A10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 040A04 BS 970 (Part 1) 060A32 BS 970 (Part 1) 045M10 BS 970 (Part 1) 045M10
Match Breakdown
CHEMISTRY MATCH
89%
MECHANICAL MATCH
No shared data
OVERALL
89%
Specifications
Property JIS G4053 SMn438 BS 970 (Part 1) 150M40
Standard JIS G4053:2008 BS 970 (Part 1):1983
Category Carbon Steel Carbon Steel
C (%) 0.35–0.41 0.36-0.44
Si (%) 0.15–0.35 Not specified
Mn (%) 1.35–1.65 1.30-1.70
S (%) ≤0.030 <=0.050
P (%) ≤0.030 <=0.050
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property JIS G4053 SMn438 BS 970 (Part 1) 150M40
Tensile Strength ≥690 MPa Not specified
Yield Strength ≥540 MPa Not specified
Elongation ≥15% Not specified
Typical Applications
JIS G4053 SMn438
Agricultural equipment, heavy duty shafts
BS 970 (Part 1) 150M40
Through hardening steel for mechanical and allied engineering purposes; supplied in the hardened and tempered conditions of Table 6.
Key Differences
Can JIS G4053 SMn438 Be Substituted With BS 970 (Part 1) 150M40?
JIS G4053 SMn438 and BS 970 (Part 1) 150M40 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 150M40 is often considered as a substitute for JIS G4053 SMn438 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
JIS G4053 SMn438
Round Bar → (2 listings)
Diameter: 40–40 mm (1.57–1.57 in)
Length: 6000–6300 mm (236.22–248.03 in)
BS 970 (Part 1) 150M40
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On M-EX Right Now
JIS G4053 SMn438
2 active listings and RFQs →
BS 970 (Part 1) 150M40
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Frequently Asked Questions
What is the difference between JIS G4053 SMn438 and BS 970 (Part 1) 150M40?
JIS G4053 SMn438 specifies Si which is not specified for BS 970 (Part 1) 150M40.
Can JIS G4053 SMn438 be substituted with BS 970 (Part 1) 150M40?
JIS G4053 SMn438 and BS 970 (Part 1) 150M40 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 150M40 is often considered as a substitute for JIS G4053 SMn438 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.