Minimal Match — 52.7% match
based on chemical composition and mechanical property overlap.
BS 970 EN5 (BS 970:1955) and BS 970 (Part 1) 045A10 (BS 970 (Part 1):1991) are both steel grades.
Both fall under the Carbon Steel category.
BS 970 EN5 is typically used for gears, shafts, couplings, general engineering, while BS 970 (Part 1) 045A10 is commonly used for case hardening steel (section four).
BS 970 EN5 is defined under British Standards (BS), originating from United Kingdom, while BS 970 (Part 1) 045A10 is defined under British Standards (BS), originating from United Kingdom.
As per chemical composition, BS 970 EN5 vs BS 970 (Part 1) 045A10 is a 79% match.
As per mechanical properties, the match is 0%.
Combined, this makes them a minimal match overall at 52.7%.
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 EN5
BS 970 (Part 1) 045A10
Tensile Strength
≥494 MPa (32 tons/sq in, converted)
430 MPa min
Yield Strength
≥247 MPa (16 tons/sq in, converted)
Not specified
Elongation
≥25%
18 % min
Hardness
143-193 HB
Not specified
Condition
Normalised, ruling section 2 1/2 in (lowest-strength condition of the standard)
Case hardened, 19 mm test bar
Typical Applications
BS 970 EN5
Gears, shafts, couplings, general engineering
BS 970 (Part 1) 045A10
Case hardening steel (section four)
Key Differences
BS 970 EN5 specifies Si, S, P which are not specified for BS 970 (Part 1) 045A10.
Can BS 970 EN5 Be Substituted With BS 970 (Part 1) 045A10?
BS 970 EN5 and BS 970 (Part 1) 045A10 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.
What is the difference between BS 970 EN5 and BS 970 (Part 1) 045A10?
BS 970 EN5 specifies Si, S, P which are not specified for BS 970 (Part 1) 045A10.
Can BS 970 EN5 be substituted with BS 970 (Part 1) 045A10?
BS 970 EN5 and BS 970 (Part 1) 045A10 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.