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ASTM A516/A516M Grade 55 vs IS 11169 (Part 1) 15C8

Strong Match — 86.3% match based on chemical composition and mechanical property overlap.

ASTM A516/A516M Grade 55 (ASTM A516/A516M:2025) and IS 11169 (Part 1) 15C8 (IS 11169 (Part 1):1984) are both steel grades. Both fall under the Carbon Steel category. ASTM A516/A516M Grade 55 is typically used for welded pressure vessels where improved notch toughness is important, while IS 11169 (Part 1) 15C8 is commonly used for cold heading and cold extrusion; the standard covers wires, wire rods and bars of 2 to 100 mm diameter (clause 1.1). ASTM A516/A516M Grade 55 is defined under ASTM International, originating from United States, while IS 11169 (Part 1) 15C8 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, ASTM A516/A516M Grade 55 vs IS 11169 (Part 1) 15C8 is a 86.3% 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 86.3%.

Frequently Compared With ASTM A516/A516M Grade 55:
BS 970 (Part 3) 080A15 BS 970 (Part 3) 070M20 BS 970 (Part 1) 040A04 BS 970 (Part 1) 040A10 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045A10 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) 055M15
Match Breakdown
CHEMISTRY MATCH
86.3%
MECHANICAL MATCH
No shared data
OVERALL
86.3%
Specifications
Property ASTM A516/A516M Grade 55 IS 11169 (Part 1) 15C8
Standard ASTM A516/A516M:2025 IS 11169 (Part 1):1984
Category Carbon Steel Carbon Steel
C (%) <=0.18 0.10-0.20
Mn (%) 0.60-0.90 0.60-0.90
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 55 IS 11169 (Part 1) 15C8
Tensile Strength 380-515 MPa Not specified
Yield Strength >=205 MPa Not specified
Elongation >=23% Not specified
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 Not specified
Hardness, annealed Not specified <=140 HB
Typical Applications
ASTM A516/A516M Grade 55
Welded pressure vessels where improved notch toughness is important
IS 11169 (Part 1) 15C8
Cold heading and cold extrusion; the standard covers wires, wire rods and bars of 2 to 100 mm diameter (clause 1.1)
Key Differences
Can ASTM A516/A516M Grade 55 Be Substituted With IS 11169 (Part 1) 15C8?
ASTM A516/A516M Grade 55 and IS 11169 (Part 1) 15C8 overlap closely enough on chemistry and mechanical properties that IS 11169 (Part 1) 15C8 is often considered as a substitute for ASTM A516/A516M Grade 55 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
On M-EX Right Now
ASTM A516/A516M Grade 55
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IS 11169 (Part 1) 15C8
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Frequently Asked Questions
What is the difference between ASTM A516/A516M Grade 55 and IS 11169 (Part 1) 15C8?
ASTM A516/A516M Grade 55 specifies P, S, Si which are not specified for IS 11169 (Part 1) 15C8.
Can ASTM A516/A516M Grade 55 be substituted with IS 11169 (Part 1) 15C8?
ASTM A516/A516M Grade 55 and IS 11169 (Part 1) 15C8 overlap closely enough on chemistry and mechanical properties that IS 11169 (Part 1) 15C8 is often considered as a substitute for ASTM A516/A516M Grade 55 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.