ASTM A387/A387M Grade 22 vs BS 970 (Part 1) 897M39

Related Material — 68.4% match based on chemical composition and mechanical property overlap.

ASTM A387/A387M Grade 22 (ASTM A387/A387M:2011) and BS 970 (Part 1) 897M39 (BS 970 (Part 1):1991) are both steel grades. Both fall under the Alloy Steel category. ASTM A387/A387M Grade 22 is typically used for welded boilers and pressure vessels for elevated temperature service, while BS 970 (Part 1) 897M39 is commonly used for steel for surface hardening by nitriding (section three). ASTM A387/A387M Grade 22 is defined under ASTM International, originating from United States, while BS 970 (Part 1) 897M39 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, ASTM A387/A387M Grade 22 vs BS 970 (Part 1) 897M39 is a 68.4% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a related material overall at 68.4%.

Frequently Compared With ASTM A387/A387M Grade 22:
EN 10028-2 10CrMo9-10 IS 1570 (Part 7) 12Cr9Mo10H IS 1570 (Part 4) 10Cr20Mo6 IS 4367 10Cr9Mo10 IS 1570 (Part 4) 10Mo6 IS 1570 (Part 4) 07Cr4Mo6 NF A35-565 100C6 UNI 11234 100Cr6 IS 1570 (Part 4) 103Cr4 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 105Cr5
Match Breakdown
CHEMISTRY MATCH
68.4%
MECHANICAL MATCH
No shared data
OVERALL
68.4%
Specifications
Property ASTM A387/A387M Grade 22 BS 970 (Part 1) 897M39
Standard ASTM A387/A387M:2011 BS 970 (Part 1):1991
Category Alloy Steel Alloy Steel
C (%) 0.05-0.15 0.35-0.43
Mn (%) 0.30-0.60 0.45-0.70
P (%) <=0.025 Not specified
S (%) <=0.025 Not specified
Si (%) <=0.50 Not specified
Cr (%) 2.00-2.50 3.00-3.50
Mo (%) 0.90-1.10 0.80-1.10
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 22 BS 970 (Part 1) 897M39
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 22
Welded boilers and pressure vessels for elevated temperature service
BS 970 (Part 1) 897M39
Steel for surface hardening by nitriding (section three)
Key Differences
Can ASTM A387/A387M Grade 22 Be Substituted With BS 970 (Part 1) 897M39?
ASTM A387/A387M Grade 22 and BS 970 (Part 1) 897M39 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 22
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BS 970 (Part 1) 897M39
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Frequently Asked Questions
What is the difference between ASTM A387/A387M Grade 22 and BS 970 (Part 1) 897M39?
ASTM A387/A387M Grade 22 specifies P, S, Si which are not specified for BS 970 (Part 1) 897M39.
Can ASTM A387/A387M Grade 22 be substituted with BS 970 (Part 1) 897M39?
ASTM A387/A387M Grade 22 and BS 970 (Part 1) 897M39 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.