ASTM A139 / A139M
This specification covers five grades of electric-fusion
(arc)-welded straight-seam or helical-seam steel pipe. Pipe of NPS 4
(Note 1) and larger with nominal (average) wall thickness of 1.0 in.
[25.4 mm] and less are covered. Listing of standardized dimensions
are for reference (Note 2). The grades of steel are pipe mill grades
having mechanical properties which differ from standard plate
grades. The pipe is intended for conveying liquid, gas, or vapor.The
values stated in either inch-pound units or in SI units are to be
regarded separately as standard. Within the text, the SI units are
shown in brackets. The values in each system are not exact
equivalents; therefore, each system is to be used independently of
the other.
Chemical Properties
| Grades |
Carbon |
Manganese |
Phosphorus |
Sulfur |
Mechanical Properties
| Grades |
Tensile strength, min, psi [MPa] |
Yield strength, min, psi [MPa] |
Elongation in 2 in. or 50 mm |
| Basic minimum elongation |
For longitudinal strips tests |
Products
