Minimal Match — 35% match
based on chemical composition and mechanical property overlap.
ASTM A537/A537M Class 3 (ASTM A537/A537M:2013) and BS 970 (Part 1) 055M15 (BS 970 (Part 1):1991) are both steel grades.
Both fall under the Carbon Steel category.
ASTM A537/A537M Class 3 is typically used for fusion welded pressure vessels and structures, while BS 970 (Part 1) 055M15 is commonly used for as-rolled, or as-rolled and softened, steel (section two).
ASTM A537/A537M Class 3 is defined under ASTM International, originating from United States, while BS 970 (Part 1) 055M15 is defined under British Standards (BS), originating from United Kingdom.
As per chemical composition, ASTM A537/A537M Class 3 vs BS 970 (Part 1) 055M15 is a 65.3% match.
As per mechanical properties, the match is 0%.
Combined, this makes them a minimal match overall at 35%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
ASTM A537/A537M Class 3
BS 970 (Part 1) 055M15
Tensile Strength
550-690 MPa
310 MPa min
Yield Strength
>=380 MPa
Not specified
Elongation
>=22%
25 % min
Condition
Quenched and tempered, thickness 65 mm and under; elongation in 50 mm gauge length
As-rolled
Hardness
Not specified
121 HB min
Typical Applications
ASTM A537/A537M Class 3
Fusion welded pressure vessels and structures
BS 970 (Part 1) 055M15
As-rolled, or as-rolled and softened, steel (section two)
Key Differences
ASTM A537/A537M Class 3 specifies P, S, Si, Cu which are not specified for BS 970 (Part 1) 055M15.
Can ASTM A537/A537M Class 3 Be Substituted With BS 970 (Part 1) 055M15?
ASTM A537/A537M Class 3 and BS 970 (Part 1) 055M15 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 ASTM A537/A537M Class 3 and BS 970 (Part 1) 055M15?
ASTM A537/A537M Class 3 specifies P, S, Si, Cu which are not specified for BS 970 (Part 1) 055M15.
Can ASTM A537/A537M Class 3 be substituted with BS 970 (Part 1) 055M15?
ASTM A537/A537M Class 3 and BS 970 (Part 1) 055M15 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.