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BS 970 (Part 3) 945M38 vs SAE J404 8637

Close Alternative — 80.4% match based on chemical composition and mechanical property overlap.

BS 970 (Part 3) 945M38 (BS 970 (Part 3):1991) and SAE J404 8637 (SAE J404:2009) are both steel grades. Both fall under the Alloy Steel category. BS 970 (Part 3) 945M38 is typically used for bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; alloy direct hardening steel (table 16), while SAE J404 8637 is commonly used for chemistry-only alloy steel grade; see the composition notes for product scope. BS 970 (Part 3) 945M38 is defined under British Standards (BS), originating from United Kingdom, while SAE J404 8637 is defined under SAE International, originating from United States.

As per chemical composition, BS 970 (Part 3) 945M38 vs SAE J404 8637 is a 80.4% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a close alternative overall at 80.4%.

Frequently Compared With BS 970 (Part 3) 945M38:
IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6 IS 4367 10Cr9Mo10 IS 1570 (Part 4) 10Mo6 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 NF A35-565 100C6 UNI 11234 100Cr6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 1570 (Part 7) 10Mo6H
Match Breakdown
CHEMISTRY MATCH
80.4%
MECHANICAL MATCH
No shared data
OVERALL
80.4%
Specifications
Property BS 970 (Part 3) 945M38 SAE J404 8637
Standard BS 970 (Part 3):1991 SAE J404:2009
Category Alloy Steel Alloy Steel
C (%) 0.34-0.42 0.38-0.43
Si (%) 0.10-0.40 0.15-0.35
Mn (%) 1.20-1.60 0.75-1.00
P (%) <=0.035 <=0.030
S (%) <=0.040 <=0.040
Cr (%) 0.40-0.60 0.40-0.60
Mo (%) 0.15-0.25 0.15-0.25
Ni (%) 0.60-0.90 0.40-0.70
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Typical Applications
BS 970 (Part 3) 945M38
Bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; alloy direct hardening steel (Table 16)
SAE J404 8637
Chemistry-only alloy steel grade; see the composition notes for product scope
Can BS 970 (Part 3) 945M38 Be Substituted With SAE J404 8637?
BS 970 (Part 3) 945M38 and SAE J404 8637 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.
On M-EX Right Now
BS 970 (Part 3) 945M38
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SAE J404 8637
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Frequently Asked Questions
What is the difference between BS 970 (Part 3) 945M38 and SAE J404 8637?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 (Part 3) 945M38 be substituted with SAE J404 8637?
BS 970 (Part 3) 945M38 and SAE J404 8637 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.