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ASTM A105 vs BS 970 (Part 1) 055M15

Minimal Match — 35% match based on chemical composition and mechanical property overlap.

ASTM A105 (ASTM A105) and BS 970 (Part 1) 055M15 (BS 970 (Part 1):1991) are both steel grades. Both fall under the Carbon Steel category. ASTM A105 is typically used for flanges, fittings, valves, pressure piping components, forged pressure vessel parts, while BS 970 (Part 1) 055M15 is commonly used for as-rolled, or as-rolled and softened, steel (section two). ASTM A105 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 A105 vs BS 970 (Part 1) 055M15 is a 83.2% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With ASTM A105:
BS 970 (Part 3) 070M55 BS 970 (Part 1) 040A10 BS 970 (Part 1) 080A20 BS 970 (Part 1) 045A10 BS 970 (Part 1) 040A04 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 045M10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 060A32
Match Breakdown
CHEMISTRY MATCH
83.2%
MECHANICAL MATCH
0%
OVERALL
35%
Specifications
Property ASTM A105 BS 970 (Part 1) 055M15
Standard ASTM A105 BS 970 (Part 1):1991
Category Carbon Steel Carbon Steel
C (%) ≤0.35 <=0.20
Mn (%) 0.60–1.05 <=0.80
Si (%) 0.10–0.35 Not specified
P (%) ≤0.035 Not specified
S (%) ≤0.040 Not specified
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property ASTM A105 BS 970 (Part 1) 055M15
Tensile Strength 485 MPa min 310 MPa min
Yield Strength 250 MPa min Not specified
Elongation ≥22% 25 % min
Hardness ≤197 HB 121 HB min
Condition Not specified As-rolled
Typical Applications
ASTM A105
Flanges, fittings, valves, pressure piping components, forged pressure vessel parts
BS 970 (Part 1) 055M15
As-rolled, or as-rolled and softened, steel (section two)
Key Differences
Can ASTM A105 Be Substituted With BS 970 (Part 1) 055M15?
ASTM A105 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.
Forms & Sizes Available on M-EX
ASTM A105
Round Bar → (2 listings)
Diameter: 40–40 mm (1.57–1.57 in)
Length: 6100–7000 mm (240.16–275.59 in)
BS 970 (Part 1) 055M15
No active listings currently.
On M-EX Right Now
ASTM A105
2 active listings and RFQs →
BS 970 (Part 1) 055M15
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Frequently Asked Questions
What is the difference between ASTM A105 and BS 970 (Part 1) 055M15?
ASTM A105 specifies Si, P, S which are not specified for BS 970 (Part 1) 055M15.
Can ASTM A105 be substituted with BS 970 (Part 1) 055M15?
ASTM A105 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.