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BS 970 (Part 1) 635A14 vs BS 970 EN351

Close Alternative — 79% match based on chemical composition and mechanical property overlap.

BS 970 (Part 1) 635A14 (BS 970 (Part 1):1983) and BS 970 EN351 (BS 970:1955) are both steel grades. Both fall under the Alloy Steel category. BS 970 (Part 1) 635A14 is typically used for case hardening steel for mechanical and allied engineering purposes (table 11 mechanical properties)., while BS 970 EN351 is commonly used for bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars. suitable for tensile strength 45 tons/sq in min.. BS 970 (Part 1) 635A14 is defined under British Standards (BS), originating from United Kingdom, while BS 970 EN351 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, BS 970 (Part 1) 635A14 vs BS 970 EN351 is a 79% 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 79%.

Frequently Compared With BS 970 (Part 1) 635A14:
NF A35-565 100C6 IS 11169 (Part 1) 10Ni5Cr4 IS 1570 (Part 4) 07Cr4Mo6 UNI 11234 100Cr6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 7) 10Mo6H IS 4367 07Cr4Mo6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10
Match Breakdown
CHEMISTRY MATCH
79%
MECHANICAL MATCH
No shared data
OVERALL
79%
Specifications
Property BS 970 (Part 1) 635A14 BS 970 EN351
Standard BS 970 (Part 1):1983 BS 970:1955
Category Alloy Steel Alloy Steel
C (%) 0.12-0.17 <=0.20
Mn (%) 0.70-0.90 0.60-1.00
Cr (%) 0.50-0.75 0.40-0.80
Mo (%) <=0.10 <=0.10
Ni (%) 0.70-1.00 0.60-1.00
P (%) <=0.035 <=0.050
S (%) <=0.040 <=0.050
Si (%) Not specified <=0.35
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 (Part 1) 635A14 BS 970 EN351
Tensile Strength Not specified ≥695 MPa (45 tons/sq in, converted)
Elongation Not specified ≥18%
Condition Not specified core, min (lowest-strength condition of the standard)
Typical Applications
BS 970 (Part 1) 635A14
Case hardening steel for mechanical and allied engineering purposes (Table 11 mechanical properties).
BS 970 EN351
Bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars. Suitable for tensile strength 45 tons/sq in min.
Key Differences
Can BS 970 (Part 1) 635A14 Be Substituted With BS 970 EN351?
BS 970 (Part 1) 635A14 and BS 970 EN351 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 1) 635A14
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BS 970 EN351
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Frequently Asked Questions
What is the difference between BS 970 (Part 1) 635A14 and BS 970 EN351?
BS 970 EN351 specifies Si which is not specified for BS 970 (Part 1) 635A14.
Can BS 970 (Part 1) 635A14 be substituted with BS 970 EN351?
BS 970 (Part 1) 635A14 and BS 970 EN351 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.