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JIS G4053 SMn438 vs BS 970 (Part 1) 055M15

Minimal Match — 53.3% match based on chemical composition and mechanical property overlap.

JIS G4053 SMn438 (JIS G4053:2008) and BS 970 (Part 1) 055M15 (BS 970 (Part 1):1991) 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) 055M15 is commonly used for as-rolled, or as-rolled and softened, steel (section two). JIS G4053 SMn438 is defined under Japanese Industrial Standards (JIS), originating from Japan, while BS 970 (Part 1) 055M15 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, JIS G4053 SMn438 vs BS 970 (Part 1) 055M15 is a 80% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 53.3%.

Frequently Compared With JIS G4053 SMn438:
BS 970 (Part 3) 070M55 BS 970 (Part 1) 040A10 BS 970 (Part 1) 080A20 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045M10 BS 970 (Part 3) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 040A04 BS 970 (Part 1) 060A32 BS 970 (Part 1) 045M10
Match Breakdown
CHEMISTRY MATCH
80%
MECHANICAL MATCH
0%
OVERALL
53.3%
Specifications
Property JIS G4053 SMn438 BS 970 (Part 1) 055M15
Standard JIS G4053:2008 BS 970 (Part 1):1991
Category Carbon Steel Carbon Steel
C (%) 0.35–0.41 <=0.20
Si (%) 0.15–0.35 Not specified
Mn (%) 1.35–1.65 <=0.80
S (%) ≤0.030 Not specified
P (%) ≤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 G4053 SMn438 BS 970 (Part 1) 055M15
Tensile Strength ≥690 MPa 310 MPa min
Yield Strength ≥540 MPa Not specified
Elongation ≥15% 25 % min
Condition Not specified As-rolled
Hardness Not specified 121 HB min
Typical Applications
JIS G4053 SMn438
Agricultural equipment, heavy duty shafts
BS 970 (Part 1) 055M15
As-rolled, or as-rolled and softened, steel (section two)
Key Differences
Can JIS G4053 SMn438 Be Substituted With BS 970 (Part 1) 055M15?
JIS G4053 SMn438 and BS 970 (Part 1) 055M15 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
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) 055M15
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On M-EX Right Now
JIS G4053 SMn438
2 active listings and RFQs →
BS 970 (Part 1) 055M15
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Frequently Asked Questions
What is the difference between JIS G4053 SMn438 and BS 970 (Part 1) 055M15?
JIS G4053 SMn438 specifies Si, S, P which are not specified for BS 970 (Part 1) 055M15.
Can JIS G4053 SMn438 be substituted with BS 970 (Part 1) 055M15?
JIS G4053 SMn438 and BS 970 (Part 1) 055M15 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.