Strong Match — 85.5% match
based on chemical composition and mechanical property overlap.
BS 970 EN100 (BS 970:1955) and BS 970 (Part 3) 945M38 (BS 970 (Part 3):1991) are both steel grades.
Both fall under the Alloy Steel category.
BS 970 EN100 is typically used for bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars. suitable for 45/55 (r), 50/60 (s), 55/65 (t), 60/70 (u), 65/75 (v) tons/sq in according to ruling section. capable of meeting the test requirements of en 16 and en 19 except where used for special purposes., while BS 970 (Part 3) 945M38 is commonly used for bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; alloy direct hardening steel (table 16).
BS 970 EN100 is defined under British Standards (BS), originating from United Kingdom, while BS 970 (Part 3) 945M38 is defined under British Standards (BS), originating from United Kingdom.
As per chemical composition, BS 970 EN100 vs BS 970 (Part 3) 945M38 is a 85.5% 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 85.5%.
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 EN100
BS 970 (Part 3) 945M38
Tensile Strength
≥695 MPa (45 tons/sq in, converted)
Not specified
Yield Strength
≥525 MPa (34 tons/sq in, converted)
Not specified
Elongation
≥22%
Not specified
Hardness
201-255 HB
Not specified
Condition
Hardened and tempered R, ruling section 6 in (lowest-strength condition of the standard)
Not specified
Typical Applications
BS 970 EN100
Bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars. Suitable for 45/55 (R), 50/60 (S), 55/65 (T), 60/70 (U), 65/75 (V) tons/sq in according to ruling section. Capable of meeting the test requirements of En 16 and En 19 except where used for special purposes.
BS 970 (Part 3) 945M38
Bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; alloy direct hardening steel (Table 16)
Can BS 970 EN100 Be Substituted With BS 970 (Part 3) 945M38?
BS 970 EN100 and BS 970 (Part 3) 945M38 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 3) 945M38 is often considered as a substitute for BS 970 EN100 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 EN100 and BS 970 (Part 3) 945M38?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 EN100 be substituted with BS 970 (Part 3) 945M38?
BS 970 EN100 and BS 970 (Part 3) 945M38 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 3) 945M38 is often considered as a substitute for BS 970 EN100 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.