Strong Match — 89.8% match
based on chemical composition and mechanical property overlap.
BS 970 EN36B (BS 970:1955) and BS 970 (Part 3) 655M13 (BS 970 (Part 3):1991) are both steel grades.
Both fall under the Alloy Steel category.
BS 970 EN36B is typically used for case hardened gears and heavily loaded components, while BS 970 (Part 3) 655M13 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 EN36B is defined under British Standards (BS), originating from United Kingdom, while BS 970 (Part 3) 655M13 is defined under British Standards (BS), originating from United Kingdom.
As per chemical composition, BS 970 EN36B vs BS 970 (Part 3) 655M13 is a 89.8% 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 89.8%.
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 EN36B
BS 970 (Part 3) 655M13
Tensile Strength
≥1004 MPa (65 tons/sq in, converted)
Not specified
Elongation
≥13%
Not specified
Condition
Core, after heat treatment (lowest-strength condition of the standard)
Not specified
Typical Applications
BS 970 EN36B
Case hardened gears and heavily loaded components
BS 970 (Part 3) 655M13
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 EN36B Be Substituted With BS 970 (Part 3) 655M13?
BS 970 EN36B and BS 970 (Part 3) 655M13 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 3) 655M13 is often considered as a substitute for BS 970 EN36B in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
What is the difference between BS 970 EN36B and BS 970 (Part 3) 655M13?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 EN36B be substituted with BS 970 (Part 3) 655M13?
BS 970 EN36B and BS 970 (Part 3) 655M13 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 3) 655M13 is often considered as a substitute for BS 970 EN36B in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.