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For a complete listing of all tubing sizes produced by Valmont, please visit our Steel Tubing Product Catalog.
Chemical Requirements
Though other elements are allowed to be added, the following are the required elements under ASTM A847.
| Element | Heat Analysis |
| Carbon % | 0.20 max |
| Manganese | 1.35 max |
| Phosphorous % | 0.04 max |
| Sulphur | 0.035 max |
| Copper % | 0.20 min (if chromium & silicon are each .050 minimum, copper min does not apply) |
Physical Requirements
In addition to the following physical testing, a flattening test is also required for rounds. It is not required for squares and rectangles or other shapes under A847.
| Test | Strength |
| Yield | 50,000 psi |
| Tensile | 70,000 psi |
| Elongation | 19% (Applies to wall thicknesses 0.120 and over. For lighter wall thicknesses, elongation will be by agreement.) |
Specification Notes
- According to ASTM A847, the weld seam location for square, rectangle and other specially shaped tubing shall not be located within the corner radius unless specified by the customer or manufacturer.
- Under ASTM A847, the corner radius for square and rectangular tubing shall not exceed three times the corner radius.
- As a standard under ASTM A847, electric resistance welded tubing is normally provided without removal of inside flash. If flash control is required, please specify at time of quotation or order placement.
- ASTM A500 is a related structural specification that covers standard carbon steel tubing. Please refer to the ASTM A500 page for more information.
- For more detailed information on the A847 specification and to purchase a copy, please visit the ASTM website.
Please contact one of our knowledgeable sales staff members, who will assist you with any further questions regarding this specification or with your specific tubing requirements.
