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ASTM A387/A387M Grade 11 vs IS 1570 (Part 4) 103Cr4

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

ASTM A387/A387M Grade 11 (ASTM A387/A387M:2011) and IS 1570 (Part 4) 103Cr4 (IS 1570 (Part 4):1988) are both steel grades. Both fall under the Alloy Steel category. ASTM A387/A387M Grade 11 is defined under ASTM International, originating from United States, while IS 1570 (Part 4) 103Cr4 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, ASTM A387/A387M Grade 11 vs IS 1570 (Part 4) 103Cr4 is a 63.6% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With ASTM A387/A387M Grade 11:
IS 1570 (Part 7) 12Cr4Mo5H NF A35-565 100C6 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10 EN 10028-2 10CrMo9-10 IS 1570 (Part 4) 10Mo6 UNI 11234 100Cr6
Match Breakdown
CHEMISTRY MATCH
63.6%
MECHANICAL MATCH
No shared data
OVERALL
35%
Specifications
Property ASTM A387/A387M Grade 11 IS 1570 (Part 4) 103Cr4
Standard ASTM A387/A387M:2011 IS 1570 (Part 4):1988
Category Alloy Steel Alloy Steel
C (%) 0.05-0.17 0.95-1.10
Mn (%) 0.40-0.65 0.25-0.45
P (%) <=0.025 Not specified
S (%) <=0.025 Not specified
Si (%) 0.50-0.80 0.10-0.35
Cr (%) 1.00-1.50 0.90-1.20
Mo (%) 0.45-0.65 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 A387/A387M Grade 11 IS 1570 (Part 4) 103Cr4
Tensile Strength 415-585 MPa Not specified
Yield Strength >=240 MPa Not specified
Elongation >=22% Not specified
Condition Class 1 plates, no thickness ranges printed; elongation in 50 mm gauge length Not specified
Typical Applications
ASTM A387/A387M Grade 11
Welded boilers and pressure vessels for elevated temperature service
IS 1570 (Part 4) 103Cr4
Not documented
Key Differences
Can ASTM A387/A387M Grade 11 Be Substituted With IS 1570 (Part 4) 103Cr4?
ASTM A387/A387M Grade 11 and IS 1570 (Part 4) 103Cr4 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 A387/A387M Grade 11
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IS 1570 (Part 4) 103Cr4
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Frequently Asked Questions
What is the difference between ASTM A387/A387M Grade 11 and IS 1570 (Part 4) 103Cr4?
ASTM A387/A387M Grade 11 specifies P, S, Mo which are not specified for IS 1570 (Part 4) 103Cr4.
Can ASTM A387/A387M Grade 11 be substituted with IS 1570 (Part 4) 103Cr4?
ASTM A387/A387M Grade 11 and IS 1570 (Part 4) 103Cr4 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.