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KS D3752 SM20C vs BS 970 (Part 1) 045A10

Related Material — 55.8% match based on chemical composition and mechanical property overlap.

KS D3752 SM20C (KS D 3752:2024) and BS 970 (Part 1) 045A10 (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) 045A10 is commonly used for case hardening steel (section four). KS D3752 SM20C is defined under Korean Industrial Standards (KS), originating from South Korea, while BS 970 (Part 1) 045A10 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, KS D3752 SM20C vs BS 970 (Part 1) 045A10 is a 83.7% match. As per mechanical properties, the match is 0%. Combined, this makes them a related material overall at 55.8%.

Frequently Compared With KS D3752 SM20C:
BS 970 (Part 3) 070M55 BS 970 (Part 1) 040A10 BS 970 (Part 1) 080A20 BS 970 (Part 3) 070M20 BS 970 (Part 1) 040A04 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 055M15 BS 970 (Part 3) 045M10
Match Breakdown
CHEMISTRY MATCH
83.7%
MECHANICAL MATCH
0%
OVERALL
55.8%
Specifications
Property KS D3752 SM20C BS 970 (Part 1) 045A10
Standard KS D 3752:2024 BS 970 (Part 1):1991
Category Carbon Steel Carbon Steel
C (%) 0.18-0.23 0.08-0.13
Si (%) 0.15-0.35 Not specified
Mn (%) 0.30-0.60 0.30-0.60
S (%) <=0.035 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 KS D3752 SM20C BS 970 (Part 1) 045A10
Tensile Strength u2265440 MPa 430 MPa min
Yield Strength u2265245 MPa Not specified
Elongation u226523% 18 % min
Hardness u2264149 HB Not specified
Condition Not specified Case hardened, 19 mm test bar
Typical Applications
KS D3752 SM20C
Shafts, pins, keys, bolts, lightly stressed structural components, general engineering parts
BS 970 (Part 1) 045A10
Case hardening steel (section four)
Key Differences
Can KS D3752 SM20C Be Substituted With BS 970 (Part 1) 045A10?
KS D3752 SM20C and BS 970 (Part 1) 045A10 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 SM20C
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 4200–5900 mm (165.35–232.28 in)
BS 970 (Part 1) 045A10
No active listings currently.
On M-EX Right Now
KS D3752 SM20C
2 active listings and RFQs →
BS 970 (Part 1) 045A10
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Frequently Asked Questions
What is the difference between KS D3752 SM20C and BS 970 (Part 1) 045A10?
KS D3752 SM20C specifies Si, S, P which are not specified for BS 970 (Part 1) 045A10.
Can KS D3752 SM20C be substituted with BS 970 (Part 1) 045A10?
KS D3752 SM20C and BS 970 (Part 1) 045A10 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.