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BS 970 EN35A vs BS 970 (Part 1) 665M23

Strong Match — 90.3% match based on chemical composition and mechanical property overlap.

BS 970 EN35A (BS 970:1955) and BS 970 (Part 1) 665M23 (BS 970 (Part 1):1991) are both steel grades. Both fall under the Alloy Steel category. BS 970 EN35A is defined under British Standards (BS), originating from United Kingdom, while BS 970 (Part 1) 665M23 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, BS 970 EN35A vs BS 970 (Part 1) 665M23 is a 90.3% 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 90.3%.

Frequently Compared With BS 970 EN35A:
IS 1570 (Part 4) 105Cr5 IS 1570 (Part 7) 10Cr36Mo10H IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 10Cr20Mo6 IS 4367 07Cr4Mo6 NF A35-565 100C6 UNI 11234 100Cr6 IS 4367 10Cr9Mo10 IS 1570 (Part 4) 10Mo6 IS 1570 (Part 7) 10Mo6H
Match Breakdown
CHEMISTRY MATCH
90.3%
MECHANICAL MATCH
No shared data
OVERALL
90.3%
Specifications
Property BS 970 EN35A BS 970 (Part 1) 665M23
Standard BS 970:1955 BS 970 (Part 1):1991
Category Alloy Steel Alloy Steel
C (%) 0.20-0.25 0.20-0.26
Si (%) 0.10-0.35 Not specified
Mn (%) 0.30-0.60 0.35-0.75
Ni (%) 1.50-2.00 1.50-2.00
Mo (%) 0.20-0.30 0.20-0.30
S (%) <=0.050 Not specified
P (%) <=0.050 Not specified
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property BS 970 EN35A BS 970 (Part 1) 665M23
Condition Not specified Case hardened, 19 mm test bar
Tensile Strength Not specified 930 MPa min
Elongation Not specified 10 % min
Typical Applications
BS 970 EN35A
Not documented
BS 970 (Part 1) 665M23
Case hardening steel (section four)
Key Differences
Can BS 970 EN35A Be Substituted With BS 970 (Part 1) 665M23?
BS 970 EN35A and BS 970 (Part 1) 665M23 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 665M23 is often considered as a substitute for BS 970 EN35A 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 EN35A
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BS 970 (Part 1) 665M23
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Frequently Asked Questions
What is the difference between BS 970 EN35A and BS 970 (Part 1) 665M23?
BS 970 EN35A specifies Si, S, P which are not specified for BS 970 (Part 1) 665M23.
Can BS 970 EN35A be substituted with BS 970 (Part 1) 665M23?
BS 970 EN35A and BS 970 (Part 1) 665M23 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 665M23 is often considered as a substitute for BS 970 EN35A in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.