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BS 970 EN43B vs SAE J403 1046

Strong Match — 90.9% match based on chemical composition and mechanical property overlap.

BS 970 EN43B (BS 970:1955) and SAE J403 1046 (SAE J403:2014) are both steel grades. Both fall under the Carbon Steel category. BS 970 EN43B is defined under British Standards (BS), originating from United Kingdom, while SAE J403 1046 is defined under SAE International, originating from United States.

As per chemical composition, BS 970 EN43B vs SAE J403 1046 is a 90.9% 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 90.9%.

Frequently Compared With BS 970 EN43B:
BS 970 (Part 1) 060A40 BS 970 (Part 1) 060A45 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 055M15 BS 970 (Part 1) 040A04 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 060A32
Match Breakdown
CHEMISTRY MATCH
90.9%
MECHANICAL MATCH
No shared data
OVERALL
90.9%
Specifications
Property BS 970 EN43B SAE J403 1046
Standard BS 970:1955 SAE J403:2014
Category Carbon Steel Carbon Steel
C (%) 0.45-0.50 0.43-0.50
Si (%) 0.05-0.35 Not specified
Mn (%) 0.70-1.00 0.70-1.00
S (%) <=0.060 <=0.035 (flat rolled), <=0.050 (long products)
P (%) <=0.060 <=0.030 (flat rolled), <=0.040 (long products)
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Typical Applications
BS 970 EN43B
Not documented
SAE J403 1046
Chemistry-only grade; product scope as listed in the composition notes
Key Differences
Can BS 970 EN43B Be Substituted With SAE J403 1046?
BS 970 EN43B and SAE J403 1046 overlap closely enough on chemistry and mechanical properties that SAE J403 1046 is often considered as a substitute for BS 970 EN43B in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
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BS 970 EN43B
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SAE J403 1046
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Frequently Asked Questions
What is the difference between BS 970 EN43B and SAE J403 1046?
BS 970 EN43B specifies Si which is not specified for SAE J403 1046.
Can BS 970 EN43B be substituted with SAE J403 1046?
BS 970 EN43B and SAE J403 1046 overlap closely enough on chemistry and mechanical properties that SAE J403 1046 is often considered as a substitute for BS 970 EN43B in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.