ASTM A387 Grade 5 Class2 is a kind of chromium-molybdenum alloy steel plates intended primarily for welded boilers and pressure vessels designed for elevated temperature service.
ASTM A387 Grade 5 Class2 chemical composition:
|
Grade |
C max |
Mn |
Si max |
P max |
S max |
Cr |
Mo |
|
A387 Grade 5 Class2 |
0.15 |
0.25-0.66 |
0.55 |
0.035 |
0.030 |
3.90-6.10 |
0.40-0.70 |
ASTM A387 Grade 5 Class2 mechanical properties:
|
Grade |
Tensile Strength (MPa) |
Yield Strength(MPa) min |
% Elongation in 2 in.(50mm) min |
Impacting Test Temperature(°C) |
|
A387 Grade 5 Class2 |
515-690 |
310 |
18 |
-20,40,-60 |
ASTM A387 Grade 5 Class2 plate shall conform to Specification A20/A20M. These requirements out-line the testing and retesting methods and procedures, permissible variations in dimensions and weight, quality and repair of defects, marking, loading, and ordering information.
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