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SAE J403 1040 vs AISI 1040

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

SAE J403 1040 (SAE J403:2001) and AISI 1040 are both steel grades. Both fall under the Carbon Steel category. SAE J403 1040 is typically used for chemistry-only grade; product scope as listed in the composition notes, while AISI 1040 is commonly used for shafts, gears, bolts, couplings, crankshafts. SAE J403 1040 is defined under SAE International, originating from United States, while AISI 1040 is defined under AISI, originating from United States.

As per chemical composition, SAE J403 1040 vs AISI 1040 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 SAE J403 1040:
BS 970 (Part 1) 040A10 BS 970 (Part 3) 070M55 BS 970 (Part 1) 060A40 BS 970 (Part 1) 040A04 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 060A32 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 3) 045M10
Match Breakdown
CHEMISTRY MATCH
98.9%
MECHANICAL MATCH
No shared data
OVERALL
98.9%
Specifications
Property SAE J403 1040 AISI 1040
Standard SAE J403:2001 AISI
Category Carbon Steel Carbon Steel
C (%) 0.37-0.44 0.37–0.44
Mn (%) 0.60-0.90 0.60–0.90
P (%) <=0.030 ≤0.030
S (%) <=0.050 ≤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 SAE J403 1040 AISI 1040
Condition Not specified Hot Rolled
Tensile Strength Not specified 565-690 MPa
Yield Strength Not specified 375-460 MPa
Elongation Not specified 20-30%
Hardness Not specified 179-217 HB
Typical Applications
SAE J403 1040
Chemistry-only grade; product scope as listed in the composition notes
AISI 1040
Shafts, gears, bolts, couplings, crankshafts
Can SAE J403 1040 Be Substituted With AISI 1040?
SAE J403 1040 and AISI 1040 overlap closely enough on chemistry and mechanical properties that AISI 1040 is often considered as a substitute for SAE J403 1040 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
SAE J403 1040
No active listings currently.
AISI 1040
Round Bar → (3 listings)
Diameter: 40–40 mm (1.57–1.57 in)
Length: 6200–7000 mm (244.09–275.59 in)
On M-EX Right Now
SAE J403 1040
0 active listings and RFQs →
AISI 1040
3 active listings and RFQs →
Frequently Asked Questions
What is the difference between SAE J403 1040 and AISI 1040?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can SAE J403 1040 be substituted with AISI 1040?
SAE J403 1040 and AISI 1040 overlap closely enough on chemistry and mechanical properties that AISI 1040 is often considered as a substitute for SAE J403 1040 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.