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ASTM A516/A516M Grade 65 vs BS 970 (Part 1) 045M10

Minimal Match — 52.9% match based on chemical composition and mechanical property overlap.

ASTM A516/A516M Grade 65 (ASTM A516/A516M:2025) and BS 970 (Part 1) 045M10 (BS 970 (Part 1):1991) are both steel grades. Both fall under the Carbon Steel category. ASTM A516/A516M Grade 65 is typically used for welded pressure vessels where improved notch toughness is important, while BS 970 (Part 1) 045M10 is commonly used for case hardening steel (section four). ASTM A516/A516M Grade 65 is defined under ASTM International, originating from United States, while BS 970 (Part 1) 045M10 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, ASTM A516/A516M Grade 65 vs BS 970 (Part 1) 045M10 is a 79.3% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 52.9%.

Frequently Compared With ASTM A516/A516M Grade 65:
BS 970 (Part 1) 045A10 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045A10 BS 970 (Part 3) 070M20 BS 970 (Part 3) 080A15 BS 970 (Part 1) 040A04 BS 970 (Part 1) 040A10 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045M10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 060A32 BS 970 (Part 1) 055M15
Match Breakdown
CHEMISTRY MATCH
79.3%
MECHANICAL MATCH
0%
OVERALL
52.9%
Specifications
Property ASTM A516/A516M Grade 65 BS 970 (Part 1) 045M10
Standard ASTM A516/A516M:2025 BS 970 (Part 1):1991
Category Carbon Steel Carbon Steel
C (%) <=0.24 0.07-0.13
Mn (%) 0.85-1.20 0.30-0.60
P (%) <=0.025 Not specified
S (%) <=0.025 Not specified
Si (%) 0.15-0.40 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 A516/A516M Grade 65 BS 970 (Part 1) 045M10
Tensile Strength 450-585 MPa 430 MPa min
Yield Strength >=240 MPa Not specified
Elongation >=19% 18 % min
Condition Tension test per Table 2; one set of values for all thicknesses; plates 40 mm and under normally as-rolled, over 40 mm normalized; Elongation is in 200 mm gauge length, 50 mm values in the tensile block Case hardened, 19 mm test bar
Typical Applications
ASTM A516/A516M Grade 65
Welded pressure vessels where improved notch toughness is important
BS 970 (Part 1) 045M10
Case hardening steel (section four)
Key Differences
Can ASTM A516/A516M Grade 65 Be Substituted With BS 970 (Part 1) 045M10?
ASTM A516/A516M Grade 65 and BS 970 (Part 1) 045M10 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.
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ASTM A516/A516M Grade 65
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BS 970 (Part 1) 045M10
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Frequently Asked Questions
What is the difference between ASTM A516/A516M Grade 65 and BS 970 (Part 1) 045M10?
ASTM A516/A516M Grade 65 specifies P, S, Si which are not specified for BS 970 (Part 1) 045M10.
Can ASTM A516/A516M Grade 65 be substituted with BS 970 (Part 1) 045M10?
ASTM A516/A516M Grade 65 and BS 970 (Part 1) 045M10 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.