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AISI 1045 vs SAE J403 1045

Strong Match — 98.9% match based on chemical composition and mechanical property overlap.

AISI 1045 and SAE J403 1045 (SAE J403:2009) are both steel grades. Both fall under the Carbon Steel category. AISI 1045 is typically used for shafts, gears, axles, bolts, machine parts, while SAE J403 1045 is commonly used for chemistry-only grade; product scope as listed in the composition notes. AISI 1045 is defined under AISI, originating from United States, while SAE J403 1045 is defined under SAE International, originating from United States.

As per chemical composition, AISI 1045 vs SAE J403 1045 is a 98.9% 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 98.9%.

Frequently Compared With AISI 1045:
BS 970 (Part 3) 070M55 BS 970 (Part 1) 040A10 BS 970 (Part 3) 045A10 BS 970 (Part 1) 060A47 BS 970 (Part 1) 040A04 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 060A45 BS 970 (Part 1) 045M10 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045M10
Match Breakdown
CHEMISTRY MATCH
98.9%
MECHANICAL MATCH
No shared data
OVERALL
98.9%
Specifications
Property AISI 1045 SAE J403 1045
Standard AISI SAE J403:2009
Category Carbon Steel Carbon Steel
C (%) 0.43–0.50 0.43-0.50
Mn (%) 0.60–0.90 0.60-0.90
S (%) ≤0.050 <=0.050
P (%) ≤0.030 <=0.030
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property AISI 1045 SAE J403 1045
Condition Hot Rolled Not specified
Tensile Strength 570-700 MPa Not specified
Yield Strength 310-450 MPa Not specified
Elongation 16-20% Not specified
Hardness 170-210 HB Not specified
Typical Applications
AISI 1045
Shafts, gears, axles, bolts, machine parts
SAE J403 1045
Chemistry-only grade; product scope as listed in the composition notes
Can AISI 1045 Be Substituted With SAE J403 1045?
AISI 1045 and SAE J403 1045 overlap closely enough on chemistry and mechanical properties that SAE J403 1045 is often considered as a substitute for AISI 1045 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
AISI 1045
Round Bar → (3 listings)
Diameter: 40–40 mm (1.57–1.57 in)
Length: 6000–7000 mm (236.22–275.59 in)
SAE J403 1045
No active listings currently.
On M-EX Right Now
AISI 1045
3 active listings and RFQs →
SAE J403 1045
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between AISI 1045 and SAE J403 1045?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can AISI 1045 be substituted with SAE J403 1045?
AISI 1045 and SAE J403 1045 overlap closely enough on chemistry and mechanical properties that SAE J403 1045 is often considered as a substitute for AISI 1045 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.