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KS D3752 SM45C vs BS 970 (Part 1) 055M15

Minimal Match — 52.7% match based on chemical composition and mechanical property overlap.

KS D3752 SM45C (KS D 3752:2024) and BS 970 (Part 1) 055M15 (BS 970 (Part 1):1991) are both steel grades. Both fall under the Carbon Steel category. KS D3752 SM45C is typically used for shafts, keys, gears, bolts, couplings, general machine parts requiring moderate strength., while BS 970 (Part 1) 055M15 is commonly used for as-rolled, or as-rolled and softened, steel (section two). KS D3752 SM45C is defined under Korean Industrial Standards (KS), originating from South Korea, while BS 970 (Part 1) 055M15 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, KS D3752 SM45C vs BS 970 (Part 1) 055M15 is a 79% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 52.7%.

Frequently Compared With KS D3752 SM45C:
BS 970 (Part 1) 040A10 BS 970 (Part 1) 080A20 BS 970 (Part 3) 070M55 BS 970 (Part 1) 040A04 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045A10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 060A32 BS 970 (Part 1) 045A10
Match Breakdown
CHEMISTRY MATCH
79%
MECHANICAL MATCH
0%
OVERALL
52.7%
Specifications
Property KS D3752 SM45C BS 970 (Part 1) 055M15
Standard KS D 3752:2024 BS 970 (Part 1):1991
Category Carbon Steel Carbon Steel
C (%) 0.42-0.48 <=0.20
Mn (%) 0.6-0.9 <=0.80
Si (%) 0.15-0.35 Not specified
P (%) max 0.03 Not specified
S (%) max 0.03 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 KS D3752 SM45C BS 970 (Part 1) 055M15
Tensile Strength 690 MPa min (quenched & tempered) 310 MPa min
Yield Strength 490 MPa min Not specified
Elongation 17% min 25 % min
Hardness HB 201-269 121 HB min
Condition Not specified As-rolled
Typical Applications
KS D3752 SM45C
Shafts, keys, gears, bolts, couplings, general machine parts requiring moderate strength.
BS 970 (Part 1) 055M15
As-rolled, or as-rolled and softened, steel (section two)
Key Differences
Can KS D3752 SM45C Be Substituted With BS 970 (Part 1) 055M15?
KS D3752 SM45C 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
KS D3752 SM45C
Round Bar → (2 listings)
Diameter: 40–40 mm (1.57–1.57 in)
Length: 5700–6900 mm (224.41–271.65 in)
BS 970 (Part 1) 055M15
No active listings currently.
On M-EX Right Now
KS D3752 SM45C
2 active listings and RFQs →
BS 970 (Part 1) 055M15
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Frequently Asked Questions
What is the difference between KS D3752 SM45C and BS 970 (Part 1) 055M15?
KS D3752 SM45C specifies Si, P, S which are not specified for BS 970 (Part 1) 055M15.
Can KS D3752 SM45C be substituted with BS 970 (Part 1) 055M15?
KS D3752 SM45C 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.