Minimal Match — 53.9% match
based on chemical composition and mechanical property overlap.
KS D3752 SM20C (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 SM20C is typically used for shafts, pins, keys, bolts, lightly stressed structural components, general engineering parts, while BS 970 (Part 1) 055M15 is commonly used for as-rolled, or as-rolled and softened, steel (section two).
KS D3752 SM20C 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 SM20C vs BS 970 (Part 1) 055M15 is a 80.9% match.
As per mechanical properties, the match is 0%.
Combined, this makes them a minimal match overall at 53.9%.
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 SM20C
BS 970 (Part 1) 055M15
Tensile Strength
u2265440 MPa
310 MPa min
Yield Strength
u2265245 MPa
Not specified
Elongation
u226523%
25 % min
Hardness
u2264149 HB
121 HB min
Condition
Not specified
As-rolled
Typical Applications
KS D3752 SM20C
Shafts, pins, keys, bolts, lightly stressed structural components, general engineering parts
BS 970 (Part 1) 055M15
As-rolled, or as-rolled and softened, steel (section two)
Key Differences
KS D3752 SM20C specifies Si, S, P which are not specified for BS 970 (Part 1) 055M15.
Can KS D3752 SM20C Be Substituted With BS 970 (Part 1) 055M15?
KS D3752 SM20C 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.
What is the difference between KS D3752 SM20C and BS 970 (Part 1) 055M15?
KS D3752 SM20C specifies Si, S, P which are not specified for BS 970 (Part 1) 055M15.
Can KS D3752 SM20C be substituted with BS 970 (Part 1) 055M15?
KS D3752 SM20C 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.