ASTM-A109 › Standard Specification for Steel, Strip, Carbon (0.25 Maximum Percent), Cold-Rolled
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This specification covers cold-rolled carbon steel strip in cut lengths or coils, furnished to closer tolerances than cold-rolled carbon steel sheet. The steel shall be made by the open-hearth, basic-oxygen, or electric-furnace process. Cold-rolled carbon strip specified to temper numbers shall conform to the Rockwell hardness requirements. Bend tests shall be conducted in accordance with requirements specified.
1.1 This specification covers cold-rolled carbon steel strip in cut lengths or coils, furnished to closer tolerances than cold-rolled carbon steel sheet, with specific temper, with specific edge or specific finish, and in sizes as follows:
Over 1/2 to 2315/16
0.300 and under
Over 12.5 to 600 mm
7.6 mm and under
1.2 Cold-rolled strip is produced with a maximum specified carbon not exceeding 0.25 percent.
1.3 Strip tolerance products may be available in widths wider than 2315/16 in. [600 mm] by agreement between purchaser and supplier. However, such products are technically classified as cold rolled sheet. The tolerances, finishes, tempers, edges, and available widths and thicknesses differentiate cold rolled strip from the product known as cold rolled sheet which is defined by Specification and from cold rolled high carbon strip which is defined by Specification .
1.4 For the purpose of determining conformance with this specification, values shall be rounded to the nearest unit in the right hand place of figures used in expressing the limiting values in accordance with the rounding method of Practice .
1.5 The SI portions of the tables contained herein list permissible variations in dimensions and mass (see ) in SI (metric) units. The values listed are not exact conversions of the values listed in the inch-pound tables, but instead are rounded or rationalized values. Conformance to SI tolerances is mandatory when the “M” specification is used.
Note 1: The term weight is used when inch-pound units are the standard. However, under SI the preferred term is mass.
1.6 The values stated in either SI units or inch-pound units are to be regarded separately as standard. 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 non-conformance with the standard.
1.7 This specification is expressed in both inch-pound units and SI units. However, unless the order specifies the applicable “M” specification designation (SI units), the material shall be furnished to inch-pound units.
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.
carbon steel, strip; cold rolled steel strip; steel strip;; ICS Number Code 77.140.50 (Flat steel products and semi-products)
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2016 R18 EDITION
Nov. 1, 2018