ASTM A586-2018 pdf free download

ASTM A586-2018 pdf free download.Standard Speci fication for Metallic-Coated Parallel and Helical Steel Wire Structural Strand
1. Scope
1.1 This specification covers metallic-coated steel wire structural strand, for use where a high-strength, high-modulus, multiple-wire tension member is desired as a component part of a structure. The strand is available with parallel or helical wire construction. 1.1.1 The strand is available with several metallic coating classes and with two strength grades, as described in Section 4. 1.2 The strand is furnished with Class A weight zinc or zinc-aluminum alloy-coated wires throughout. It can be fur- nished with Class B weight or Class C weight zinc-coated outer wires as an option. 1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.4 This international standard was developed in accor- dance with internationally recognized principles on standard- ization established in the Decision on Principles for the Development of International Standards, Guides and Recom- mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
3. Terminology
3.1 See Terminology A902 for definition of terms related to metallic-coated steel wire and strand. 3.2 Definitions of Terms Specific to This Standard: 3.2.1 outer wires (of strand), n—those wires in the one outer-most layer of the wires composing the strand.
4. Classification
4.1 The wire strand is classified as follows. 4.1.1 Breaking Strength is expressed as Grade 1 or Grade 2 for strand having a Class A zinc or zinc-aluminum alloy coating on the outer wires of the strand. Strand with Class B or Class C zinc coating on the outer wires is available in only one grade. 4.1.2 Coating Weight is expressed as Class A, Class B, or Class C, based on the weight of coating on the outer wires in the strand. All inner wires have a Class A coating. Zinc (Z) or zinc- aluminum (ZA) must be specified when referencing Class A coating.
7. Physical Requirements for Wire
7.1 Tensile Properties:7.1.1 The metallic-coated wire used in the parallel wire strand shall, prior to fabrication, conform to the mechanical properties in Table 4. In this case the prestretching provision of the test sample of 7.1.2 is not permitted. 7.1.2 The metallic-coated wire used in the helical wire strand shall conform to the mechanical properties in Table 4 prior to fabrication. The wire test sample shall be prestretched, at the manufacturer’s option to 55 % of the minimum tensile strength specified in Table 4 prior to conducting the tests. 7.1.3 The tensile strength and the stress at 0.7 % extension shall be based on the actual cross-sectional area of the finished wire, including the metallic coating. 7.1.4 Test Specimens—The test specimens shall be free of bends or kinks other than the curvature resulting from the usual coiling operation. The hand straightening necessary to permit insertion of the specimen in the jaws of the testing machine shall be performed by drawing between wood blocks or by some other equally satisfactory means.7.2 Stress at 0.7 % Extension Under Load—The value of stress at 0.7 % extension under load shall be determined by one of the following procedures, depending on the type of exten- someter used: 7.2.1 Non-Autographic Extensometer — When a non- autographic extensometer is used to measure the 0.7 % extension, it shall have a gage length of 10 in. (254 mm), and it shall be so graduated that the smallest division corresponds to a strain not larger than 0.0001 in./in. (0.0001 mm/mm) of gage length. Apply a load corresponding to the tensile stress indicated in Table 5, using the nominal diameter of the specimen. Maintain this load while a 10-in. extensometer is attached and adjusted to the initial setting shown in Table 5. Then increase the load uniformly until the extensometer indicates an extension of 0.07 in. (1.78 mm) or 0.7 % exten- sion. Record the load for this extension. The stress correspond- ing to this load shall meet the requirements for the stress of 0.7 % extension specified in Table 4, depending on the class of coating under consideration. Hold the specimen at 0.7 % extension under load and remove the extensometer used to measure the stress at 0.7 % extension; then replace it with an elongation extensometer. Continue the application of load until fracture occurs. Record the elongation attained from the elongation extensometer and add to it 0.7 % obtained from the stress at 0.7 % extensometer to get the total elongation.