Strong Match — 86.9% match
based on chemical composition and mechanical property overlap.
BS 970 EN58C (BS 970:1955) and ASTM A959 347 (ASTM A959:2011) are both steel grades.
Both fall under the Stainless Steel category.
BS 970 EN58C is defined under British Standards (BS), originating from United Kingdom, while ASTM A959 347 is defined under ASTM International, originating from United States.
As per chemical composition, BS 970 EN58C vs ASTM A959 347 is a 86.9% 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 86.9%.
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 EN58C
ASTM A959 347
Tensile Strength
≥541 MPa (35 tons/sq in, converted)
Not specified
Yield Strength
≥185 MPa (12 tons/sq in, converted)
Not specified
Elongation
≥30%
Not specified
Condition
, ruling section 6 in (lowest-strength condition of the standard)
Not specified
Typical Applications
BS 970 EN58C
Not documented
ASTM A959 347
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
Can BS 970 EN58C Be Substituted With ASTM A959 347?
BS 970 EN58C and ASTM A959 347 overlap closely enough on chemistry and mechanical properties that ASTM A959 347 is often considered as a substitute for BS 970 EN58C 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 EN58C and ASTM A959 347?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 EN58C be substituted with ASTM A959 347?
BS 970 EN58C and ASTM A959 347 overlap closely enough on chemistry and mechanical properties that ASTM A959 347 is often considered as a substitute for BS 970 EN58C in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.