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ASTM A387/A387M Grade 5 vs BS 970 (Part 1) 722M24

Close Alternative — 72.3% match based on chemical composition and mechanical property overlap.

ASTM A387/A387M Grade 5 (ASTM A387/A387M:2011) and BS 970 (Part 1) 722M24 (BS 970 (Part 1):1983) are both steel grades. Both fall under the Alloy Steel category. ASTM A387/A387M Grade 5 is typically used for welded boilers and pressure vessels for elevated temperature service, while BS 970 (Part 1) 722M24 is commonly used for through hardening steel for mechanical and allied engineering purposes; supplied in the hardened and tempered conditions of table 6.. ASTM A387/A387M Grade 5 is defined under ASTM International, originating from United States, while BS 970 (Part 1) 722M24 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, ASTM A387/A387M Grade 5 vs BS 970 (Part 1) 722M24 is a 72.3% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a close alternative overall at 72.3%.

Frequently Compared With ASTM A387/A387M Grade 5:
IS 4367 07Cr4Mo6 UNI 11234 100Cr6 IS 1570 (Part 4) 105Cr5 NF A35-565 100C6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10 EN 10028-2 10CrMo9-10 IS 1570 (Part 4) 10Mo6 IS 1570 (Part 7) 10Mo6H IS 1570 (Part 4) 07Cr4Mo6
Match Breakdown
CHEMISTRY MATCH
72.3%
MECHANICAL MATCH
No shared data
OVERALL
72.3%
Specifications
Property ASTM A387/A387M Grade 5 BS 970 (Part 1) 722M24
Standard ASTM A387/A387M:2011 BS 970 (Part 1):1983
Category Alloy Steel Alloy Steel
C (%) <=0.15 0.20-0.28
Mn (%) 0.30-0.60 0.45-0.70
P (%) <=0.025 <=0.035
S (%) <=0.025 <=0.040
Si (%) <=0.50 Not specified
Cr (%) 4.00-6.00 3.00-3.50
Mo (%) 0.45-0.65 0.45-0.65
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 5 BS 970 (Part 1) 722M24
Tensile Strength 415-585 MPa Not specified
Yield Strength >=205 MPa Not specified
Elongation >=18% Not specified
Condition Class 1 plates, no thickness ranges printed; elongation in 50 mm gauge length Not specified
Typical Applications
ASTM A387/A387M Grade 5
Welded boilers and pressure vessels for elevated temperature service
BS 970 (Part 1) 722M24
Through hardening steel for mechanical and allied engineering purposes; supplied in the hardened and tempered conditions of Table 6.
Key Differences
Can ASTM A387/A387M Grade 5 Be Substituted With BS 970 (Part 1) 722M24?
ASTM A387/A387M Grade 5 and BS 970 (Part 1) 722M24 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.
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ASTM A387/A387M Grade 5
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BS 970 (Part 1) 722M24
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Frequently Asked Questions
What is the difference between ASTM A387/A387M Grade 5 and BS 970 (Part 1) 722M24?
ASTM A387/A387M Grade 5 specifies Si which is not specified for BS 970 (Part 1) 722M24.
Can ASTM A387/A387M Grade 5 be substituted with BS 970 (Part 1) 722M24?
ASTM A387/A387M Grade 5 and BS 970 (Part 1) 722M24 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.