ASTM A378 grade 91 welded alloy steel pipe application:Alloy steel pipe applies to petroleum, chemical industry, electric power, boiler, high temperature resistant, low temperature resistant, corrosion resistant part. The size of ASTM A378 grade 91 welded alloy steel pipe can be made according to the customers requirements.
ASTM A378 grade 91 Alloy Steel pipe/tube chemical composition
Element |
Carbon |
Manganese |
Phosphorus,max |
Sulfur,max |
Silicon |
chromium |
Molybdenum |
|||||||
|
Grade 91 |
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 |
|
0.08-0.12 |
0.06-0.15 |
0.30-0.60 |
0.25-0.66 |
0.020 |
0.025 |
0.010 |
0.012 |
0.20-0.50 |
0.18-0.56 |
8.00-9.50 |
7.90-9.60 |
0.85-1.05 |
0.80-1.10 |
|
ASTM A378 grade 91 welded Alloy 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 91 |
85-110 |
60[415] |
-- |
18 |
-- |
A378 grade91 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
A378 grade91 welded pipe/tube face finished
Manual polished
mechanical polished
black paint on the face
anti-rust oil and caps on both ends
galvanized
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