Strong Match — 87.5% match
based on chemical composition and mechanical property overlap.
KS D3752 SM20C (KS D 3752:2024) and BS 970 (Part 3) 045A10 (BS 970 (Part 3):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 3) 045A10 is commonly used for bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; case hardening steel, carbon and carbon manganese (table 14).
KS D3752 SM20C is defined under Korean Industrial Standards (KS), originating from South Korea, while BS 970 (Part 3) 045A10 is defined under British Standards (BS), originating from United Kingdom.
As per chemical composition, KS D3752 SM20C vs BS 970 (Part 3) 045A10 is a 87.5% 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 87.5%.
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 3) 045A10
Tensile Strength
u2265440 MPa
Not specified
Yield Strength
u2265245 MPa
Not specified
Elongation
u226523%
Not specified
Hardness
u2264149 HB
Not specified
Typical Applications
KS D3752 SM20C
Shafts, pins, keys, bolts, lightly stressed structural components, general engineering parts
BS 970 (Part 3) 045A10
Bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; case hardening steel, carbon and carbon manganese (Table 14)
Can KS D3752 SM20C Be Substituted With BS 970 (Part 3) 045A10?
KS D3752 SM20C and BS 970 (Part 3) 045A10 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 3) 045A10 is often considered as a substitute for KS D3752 SM20C in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
What is the difference between KS D3752 SM20C and BS 970 (Part 3) 045A10?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can KS D3752 SM20C be substituted with BS 970 (Part 3) 045A10?
KS D3752 SM20C and BS 970 (Part 3) 045A10 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 3) 045A10 is often considered as a substitute for KS D3752 SM20C in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.