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SAE J403 1008 vs BS 970 (Part 1) 040A10

Strong Match — 91.6% match based on chemical composition and mechanical property overlap.

SAE J403 1008 (SAE J403:2001) and BS 970 (Part 1) 040A10 (BS 970 (Part 1):1991) are both steel grades. Both fall under the Carbon Steel category. SAE J403 1008 is typically used for chemistry-only grade; product scope as listed in the composition notes, while BS 970 (Part 1) 040A10 is commonly used for used for bolts, studs, shafts, brackets, fabricated components, and general engineering parts.. SAE J403 1008 is defined under SAE International, originating from United States, while BS 970 (Part 1) 040A10 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, SAE J403 1008 vs BS 970 (Part 1) 040A10 is a 91.6% 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 91.6%.

Frequently Compared With SAE J403 1008:
BS 970 (Part 1) 040A04 BS 970 (Part 1) 080A20 BS 970 (Part 3) 070M55 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 045M10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 060A32 BS 970 (Part 1) 045A10 BS 970 (Part 1) 055M15 BS 970 (Part 1) 040A12
Match Breakdown
CHEMISTRY MATCH
91.6%
MECHANICAL MATCH
No shared data
OVERALL
91.6%
Specifications
Property SAE J403 1008 BS 970 (Part 1) 040A10
Standard SAE J403:2001 BS 970 (Part 1):1991
Category Carbon Steel Carbon Steel
C (%) <=0.10 0.08-0.13
Mn (%) 0.30-0.50 0.30-0.50
P (%) <=0.030 Not specified
S (%) <=0.050 Not specified
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Typical Applications
SAE J403 1008
Chemistry-only grade; product scope as listed in the composition notes
BS 970 (Part 1) 040A10
Used for bolts, studs, shafts, brackets, fabricated components, and general engineering parts.
Key Differences
Can SAE J403 1008 Be Substituted With BS 970 (Part 1) 040A10?
SAE J403 1008 and BS 970 (Part 1) 040A10 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 040A10 is often considered as a substitute for SAE J403 1008 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 1008
No active listings currently.
BS 970 (Part 1) 040A10
Round Bar → (2 listings)
Diameter: 40–40 mm (1.57–1.57 in)
Length: 4700–5500 mm (185.04–216.54 in)
On M-EX Right Now
SAE J403 1008
0 active listings and RFQs →
BS 970 (Part 1) 040A10
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between SAE J403 1008 and BS 970 (Part 1) 040A10?
SAE J403 1008 specifies P, S which are not specified for BS 970 (Part 1) 040A10.
Can SAE J403 1008 be substituted with BS 970 (Part 1) 040A10?
SAE J403 1008 and BS 970 (Part 1) 040A10 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 040A10 is often considered as a substitute for SAE J403 1008 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.