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ASTM A387/A387M Grade 9 vs EN 10028-2 10CrMo9-10

Related Material — 64.6% match based on chemical composition and mechanical property overlap.

ASTM A387/A387M Grade 9 (ASTM A387/A387M:2011) and EN 10028-2 10CrMo9-10 (EN 10028-2:2017) are both steel grades. Both fall under the Alloy Steel category. ASTM A387/A387M Grade 9 is typically used for welded boilers and pressure vessels for elevated temperature service, while EN 10028-2 10CrMo9-10 is commonly used for flat products for pressure purposes. ASTM A387/A387M Grade 9 is defined under ASTM International, originating from United States, while EN 10028-2 10CrMo9-10 is defined under European Standard (EN), originating from Europe.

As per chemical composition, ASTM A387/A387M Grade 9 vs EN 10028-2 10CrMo9-10 is a 72% match. As per mechanical properties, the match is 49.6%. Combined, this makes them a related material overall at 64.6%.

Frequently Compared With ASTM A387/A387M Grade 9:
IS 1570 (Part 7) 10Cr36Mo10H IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 NF A35-565 100C6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 10Mo6 IS 1570 (Part 7) 10Mo6H UNI 11234 100Cr6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 10Cr20Mo6 IS 4367 10Cr9Mo10
Match Breakdown
CHEMISTRY MATCH
72%
MECHANICAL MATCH
49.6%
OVERALL
64.6%
Specifications
Property ASTM A387/A387M Grade 9 EN 10028-2 10CrMo9-10
Standard ASTM A387/A387M:2011 EN 10028-2:2017
Category Alloy Steel Alloy Steel
C (%) <=0.15 0.08-0.14
Mn (%) 0.30-0.60 0.40-0.80
P (%) <=0.025 <=0.020
S (%) <=0.025 <=0.010
Si (%) <=1.00 <=0.50
Cr (%) 8.00-10.00 2.00-2.50
Mo (%) 0.90-1.10 0.90-1.10
V (%) <=0.04 Not specified
N (%) Not specified <=0.012
Cu (%) Not specified <=0.30
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 9 EN 10028-2 10CrMo9-10
Tensile Strength 415-585 MPa 480-630 MPa
Yield Strength >=205 MPa >=310 MPa
Elongation >=18% >=18%
Condition Class 1 plates, no thickness ranges printed; elongation in 50 mm gauge length Usual delivery condition normalized and tempered (+NT), nominal thickness up to 16 mm; transverse direction, Yield Strength is ReH, Elongation is A
Typical Applications
ASTM A387/A387M Grade 9
Welded boilers and pressure vessels for elevated temperature service
EN 10028-2 10CrMo9-10
Flat products for pressure purposes
Key Differences
Can ASTM A387/A387M Grade 9 Be Substituted With EN 10028-2 10CrMo9-10?
ASTM A387/A387M Grade 9 and EN 10028-2 10CrMo9-10 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 9
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EN 10028-2 10CrMo9-10
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Frequently Asked Questions
What is the difference between ASTM A387/A387M Grade 9 and EN 10028-2 10CrMo9-10?
ASTM A387/A387M Grade 9 specifies V which is not specified for EN 10028-2 10CrMo9-10. EN 10028-2 10CrMo9-10 specifies N, Cu which are not specified for ASTM A387/A387M Grade 9.
Can ASTM A387/A387M Grade 9 be substituted with EN 10028-2 10CrMo9-10?
ASTM A387/A387M Grade 9 and EN 10028-2 10CrMo9-10 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.