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BS 970 EN5D vs BS 970 (Part 3) 080M40

Strong Match — 88.8% match based on chemical composition and mechanical property overlap.

BS 970 EN5D (BS 970:1955) and BS 970 (Part 3) 080M40 (BS 970 (Part 3):1991) are both steel grades. Both fall under the Carbon Steel category. BS 970 EN5D is typically used for bars for machining, while BS 970 (Part 3) 080M40 is commonly used for shafts, gears, axles, general engineering. BS 970 EN5D is defined under British Standards (BS), originating from United Kingdom, while BS 970 (Part 3) 080M40 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, BS 970 EN5D vs BS 970 (Part 3) 080M40 is a 88.8% 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 88.8%.

Frequently Compared With BS 970 EN5D:
BS 970 (Part 1) 040A12 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 040A04 BS 970 (Part 1) 040A10 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 055M15 BS 970 (Part 1) 060A32 BS 970 (Part 1) 060A40
Match Breakdown
CHEMISTRY MATCH
88.8%
MECHANICAL MATCH
No shared data
OVERALL
88.8%
Specifications
Property BS 970 EN5D BS 970 (Part 3) 080M40
Standard BS 970:1955 BS 970 (Part 3):1991
Category Carbon Steel Carbon Steel
C (%) 0.25-0.35 0.36-0.44
Si (%) 0.05-0.35 0.10-0.40
Mn (%) 0.60-1.00 0.60-1.00
S (%) <=0.060 <=0.05
P (%) <=0.060 <=0.05
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 EN5D BS 970 (Part 3) 080M40
Tensile Strength ≥541 MPa (35 tons/sq in, converted) Not specified
Elongation ≥15% Not specified
Hardness ≤229 HB Not specified
Condition size (diameter or width across flats) Over 3/4 to 1 1/2 in (lowest-strength condition of the standard) Not specified
Typical Applications
BS 970 EN5D
Bars for machining
BS 970 (Part 3) 080M40
Shafts, gears, axles, general engineering
Can BS 970 EN5D Be Substituted With BS 970 (Part 3) 080M40?
BS 970 EN5D and BS 970 (Part 3) 080M40 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 3) 080M40 is often considered as a substitute for BS 970 EN5D in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
Forms & Sizes Available on M-EX
BS 970 EN5D
No active listings currently.
BS 970 (Part 3) 080M40
Round Bar → (2 listings)
Diameter: 40–40 mm (1.57–1.57 in)
Length: 6000–6900 mm (236.22–271.65 in)
On M-EX Right Now
BS 970 EN5D
0 active listings and RFQs →
BS 970 (Part 3) 080M40
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 EN5D and BS 970 (Part 3) 080M40?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 EN5D be substituted with BS 970 (Part 3) 080M40?
BS 970 EN5D and BS 970 (Part 3) 080M40 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 3) 080M40 is often considered as a substitute for BS 970 EN5D in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.