1.1 This specification covers electric-resistance-welded carbon and alloy steel tubing for use as mechanical tubing. The intended use of this specification is in applications in which weight is a crucial performance factor (for example, automotive) and high-strength materials can be used to provide a lightweight alternative to standard steels (since the high-strength properties allows less overall material to be used). 1.2 This specification covers high-strength mechanical tubing made from hot- or cold-rolled steel including, but not limited to, dual phase, multi-phase, complex phase, martensitic, TRIP, and Gen3 steels. 1.3 This specification covers round, square, rectangular, and special shape tubing. 1.4 This specification covers multiple grades based on tensile properties. 1.5 This tubing is produced in welded sizes with a periphery of 16 in. [406 mm] or less and a specified wall thickness of 0.188 in. [4.8 mm] or less. 1.6 Units--The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets (with the exception of Table 1). The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard. The inch-pound units shall apply unless the M designation of this specification is specified in the order. 1.7 The text of this specification contains notes and footnotes that provide explanatory material. Such notes and footnotes, excluding those in tables and figures, do not contain any mandatory requirements. 1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Keywordsultra high strength; mechanical tubing
The automotive industry as end user is aggressively using more high-strength steels in structural components to assist in light-weighting vehicles to meet higher fuel efficiency targets. These materials are typically in the ultra high-strength steel range of 780-1500 MPa tensile strength and are often produced in tubular shapes. There are currently no ASTM specifications for this product. Carbon steel sheet specification A980 identifies product from which the product could be produced.
The title and scope are in draft form and are under development within this ASTM Committee.Back to Top