ASTM A1022:15 pdf download

ASTM A1022:15 pdf download.Standard Specification for Deformed and Plain Stainless Steel Wire and Welded Wire for Concrete Reinforcement.
7.1.4.2 When required by the purchaser, the yield strength shall be determined as described in Test Methods and Definitions A370 at an extension of 0.5 % of gage length or by the offset method (0.2 %). For determining the yield strength use a Class B-I extensometer as described in Practice E83.
7.1.4.3 For wire to he used in the manufacture of welded wire reinforcement, the tensile and yield strength properties shall conform to the requirements given in Table 6, based on the nominal area of the wire.
7.1.4.4 Materials shall bc measured at extension under load and shall not be required to exhibit a definite yield point as evidenced by a distinct arrest or halt in the load indication gauge of the testing machine prior to reaching ultimate tensile load. The purchaser shall have the option to accept this feature as sufficient evidence of compliance with the specified mini- mum yield strength tests covered in this specification.
7.1.5 Bond Test—The bend test specimen shall be bent at room temperature through 90° without cracking on the outside of the bent portion, as prescribed in Table 3.
7.1.6 Reduction of Area—Shall be determined as described in Test Methods and Definitions A370. The wire shall conform to the reduction of area requirements in Tables 5 and 6.
7. 1 .7 Permissible Variation iii Wire Diamewr:
7. 1 .7. 1 The permissible variation in wire diameter shall conform to the requirements in Table 4.
7.1.7.2 The ditTerence between the maximum and minimum diameters, as measured on any given cross section of the wire, shall not exceed the tolerances listed in Table 4 for the given wire size.
7.2 General Requirements for Deformed Wire:
7.2.1 When deformed wire is ordered by size number, the relation between size number, diameter, and area shown in Tables 7 and 8 shall apply.
7.2.2 Specimens for mechanical properties testing shall be full wire sections and shall he obtained from ends of wire coils as rolled. The specimens shall be of sufficient length to perform testing described in Test Methods A370.
7.2.3 If any test specimen exhibits obvious isolated imperfections not representative of the product, it shall be discarded and another spec i men substituted.
7.2.4 Defonnarion Criteria:
7.2.4.1 Deformations shall be spaced along the wire at a substantially unih)rm distance and shall he symmetrically disposed around the perimeter. The deformations on all longitudinal lines of the wire shall he similar in size and shape. A minimum of 25 % of the total surface area shall be deformed by measurable deformations.
7.2.4.2 Deformed wire shall have two or more lines of deformations.
7.2.4.3 The average longitudinal spacing of deformations shall be not less than 3.5 nor more than 5.5 deformations per 1 in. [25 mm] in each line of deformations on the wire.