Related Material — 68.2% match
based on chemical composition and mechanical property overlap.
BS 970 EN14A (BS 970:1955) and BS 970 (Part 3) 635M15 (BS 970 (Part 3):1991) are both steel grades.
Both fall under the Alloy Steel category.
BS 970 EN14A is typically used for bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars. suitable hardened and tempered for 40/50 (q) and 45/55 (r) tons/sq in according to ruling section; purchaser to state normalised, cold drawn or hardened and tempered q or r. when required as plate, sheet or strip order to bs 1449., while BS 970 (Part 3) 635M15 is commonly used for bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; alloy case hardening steel (table 15).
BS 970 EN14A is defined under British Standards (BS), originating from United Kingdom, while BS 970 (Part 3) 635M15 is defined under British Standards (BS), originating from United Kingdom.
As per chemical composition, BS 970 EN14A vs BS 970 (Part 3) 635M15 is a 68.2% match.
Mechanical property data is not available for both grades, so this factor could not be scored.
Combined, this makes them a related material overall at 68.2%.
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 EN14A
BS 970 (Part 3) 635M15
Tensile Strength
≥541 MPa (35 tons/sq in, converted)
Not specified
Yield Strength
≥324 MPa (21 tons/sq in, converted)
Not specified
Elongation
≥20%
Not specified
Hardness
152-207 HB
Not specified
Condition
Normalised, ruling section 6 in (lowest-strength condition of the standard)
Not specified
Typical Applications
BS 970 EN14A
Bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars. Suitable hardened and tempered for 40/50 (Q) and 45/55 (R) tons/sq in according to ruling section; purchaser to state normalised, cold drawn or hardened and tempered Q or R. When required as plate, sheet or strip order to BS 1449.
BS 970 (Part 3) 635M15
Bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; alloy case hardening steel (Table 15)
Can BS 970 EN14A Be Substituted With BS 970 (Part 3) 635M15?
BS 970 EN14A and BS 970 (Part 3) 635M15 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 EN14A and BS 970 (Part 3) 635M15?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 EN14A be substituted with BS 970 (Part 3) 635M15?
BS 970 EN14A and BS 970 (Part 3) 635M15 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.