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KS D3752 SM45C vs SAE J403 1042

Strong Match — 89.9% match based on chemical composition and mechanical property overlap.

KS D3752 SM45C (KS D 3752:2024) and SAE J403 1042 (SAE J403:2001) 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 SAE J403 1042 is commonly used for chemistry-only grade; product scope as listed in the composition notes. KS D3752 SM45C is defined under Korean Industrial Standards (KS), originating from South Korea, while SAE J403 1042 is defined under SAE International, originating from United States.

As per chemical composition, KS D3752 SM45C vs SAE J403 1042 is a 89.9% 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 89.9%.

Frequently Compared With KS D3752 SM45C:
BS 970 (Part 1) 040A10 BS 970 (Part 3) 070M55 BS 970 (Part 1) 055M15 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 3) 045M10 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 060A32
Match Breakdown
CHEMISTRY MATCH
89.9%
MECHANICAL MATCH
No shared data
OVERALL
89.9%
Specifications
Property KS D3752 SM45C SAE J403 1042
Standard KS D 3752:2024 SAE J403:2001
Category Carbon Steel Carbon Steel
C (%) 0.42-0.48 0.40-0.47
Mn (%) 0.6-0.9 0.60-0.90
Si (%) 0.15-0.35 Not specified
P (%) max 0.03 <=0.030
S (%) max 0.03 <=0.050
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 SAE J403 1042
Tensile Strength 690 MPa min (quenched & tempered) Not specified
Yield Strength 490 MPa min Not specified
Elongation 17% min Not specified
Hardness HB 201-269 Not specified
Typical Applications
KS D3752 SM45C
Shafts, keys, gears, bolts, couplings, general machine parts requiring moderate strength.
SAE J403 1042
Chemistry-only grade; product scope as listed in the composition notes
Key Differences
Can KS D3752 SM45C Be Substituted With SAE J403 1042?
KS D3752 SM45C and SAE J403 1042 overlap closely enough on chemistry and mechanical properties that SAE J403 1042 is often considered as a substitute for KS D3752 SM45C in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
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)
SAE J403 1042
No active listings currently.
On M-EX Right Now
KS D3752 SM45C
2 active listings and RFQs →
SAE J403 1042
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between KS D3752 SM45C and SAE J403 1042?
KS D3752 SM45C specifies Si which is not specified for SAE J403 1042.
Can KS D3752 SM45C be substituted with SAE J403 1042?
KS D3752 SM45C and SAE J403 1042 overlap closely enough on chemistry and mechanical properties that SAE J403 1042 is often considered as a substitute for KS D3752 SM45C in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.