ASTM A387 grade 9 specification covers chromium-molybdenum alloy steel plates intended primarily for welded boilers and pressure vessels designed for elevated temperature service.
ASTM A387 grade 9 material chemical composition
Element |
Carbon |
Manganese |
Phosphorus,max |
Sulfur,max |
Silicon |
chromium |
Molybdenum |
|||||||
|
Grade 9 |
Heat analysis |
Product analysis |
Heat analysis |
Product analysis |
Heat analysis |
Product analysis |
Heat analysis |
Product analysis |
Heat analysis |
Product analysis |
Heat analysis |
Product analysis |
Heat analysis |
Product analysis |
|
0.15max |
0.15max |
0.30-0.60 |
0.25-0.66 |
0.030 |
0.030 |
0.030 |
0.030 |
1.00max |
1.05max |
8.00-10.00 |
7.90-10.10 |
0.90-1.10 |
0.85-1.15 |
|
ASTM A387 grade 9 welded steel pipe/tube mechanical properties
|
|
Tensile strength,ksi[mpa] |
Yield strength,min,ksi[mpa] |
Elongation in 8 in[200mm],min,% |
Elongation in 2 in[50mm],min,% |
Reduction of area,min,% |
|
Grade 9 |
75-100 |
45[310] |
-- |
18 |
45 |
A387 grade 9 welded pipe/tube dimension
ERW; outer diameter:21.3-660mm thickness:6-25mm
LSAW; outer diameter:325-1524mm thickness:6-50mm
SSAW: outer diameter:219-3200mm thickness:5-25mm
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