ASTM A Standard Specification for Zinc-Coated Parallel and Helical Steel Wire Structural Strand. Normativa ASTM A – Download as PDF File .pdf), Text File .txt) or read online. ASTM Aa() Standard Specification for Zinc-Coated Parallel and Helical Steel Wire Structural Strand Scope.
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In doing so, we are able to test and certify the following: The base metal shall be carbon steel manufactured by the open-hearth, basic-oxygen, or electric-furnace process Finished strands and the hard-drawn individual zinc-coated wires shall be coated by the hot-dip or electrolytic process. Breaking strength is expressed as Grade 1 or 2, while, coating weight is expressed as Class A, B, or C. If either additional sample fails the retest for breaking strength, the manufactured length in question shall be rejected.
Specically dimensioned strand bigger than 4 in. Strands shall be furnished with Class A weight zinc-coated wires throughout, but may be furnished with Class B or C weight wires as well where additional corrosion protection is required. Smaller Fittings—Many fittings manufactured for standard strand may be used with the SS, thereby offering a lower cost per unit and adding further cost reductions.
Originally published as A — If it fails to meet the minimum breaking strength requirement, and has not broken in the cone or grips, two additional samples shall be cut from the same manufactured length and tested. In doing so, we are able to test and certify the following:. Splicing of the inner wires during the stranding operation is permissible.
A number in parentheses indicates the year of last reapproval. The properties of parallel wire strand shall be as agreed upon between the purchaser and the manufacturer. The number of layers and number and size of wires in each layer shall be determined by the manufacturer. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.
For any given diameter, wire strand is the least flexible of steel cables. Find a state or province to view Wirerope Works, Inc. Joints in the wires of strand shall be dispersed sufficiently so as to maintain the minimum breaking strength as listed in Table 1 and Table 2.
Products | Structural Strand
The elongation extensometer may be constructed with less sensitive parts or be constructed in such a way that little damage would result if fracture occurs while the extensometer is attached to the specimen.
Using SS also offers these a5866 The coating shall be continuous and reasonably uniform. Any test, however, which fails due to faulty attaching of the sockets shall be disregarded.
It can be furnished with Class B weight or Class C weight zinc-coated outer wires where additional corrosion protection is required. In this case asttm prestretching provision of the test sample of 5. Structural wire rope provides greater flexibility when compared with coarse strand constructions and is generally the structural cable of choice where bending ability is an important requirement, such as forming flemish eye ends drop terminals.
Using SS also offers these advantages:. If both of these tests pass, the coil or reel shall be accepted. Product description Prestretching Striping Proofloading Pin orientation Certification Special features Length tolerances Galvanized coating Modulus of elasticity Length and point of measurement Measuring at required load End terminations dimensions, pin asm, jaw openings Nondestructive test method.
This abstract is a brief summary of the referenced standard. Please contact your WW regional sales manager or customer service representative for further information. Apply a load corresponding to the tensile stress indicated in Table 5, using the nominal diameter of the specimen. If fracture takes place outside the middle third of the gage length, the elongation value obtained may not be representative of the material.
The American Society for Testing and Materials takes no position respecting the validity of any ast, rights asserted in connection with any item mentioned in this standard. For users who opt to asym SS without downsizing the diameter of the strand, other benefits apply. The stress corresponding to astn load shall meet the requirements for the stress of 0. The modulus of elasticity shall be determined from gage length of not less than in.
Hold the specimen at 0. Reduced Structural Strand Diameter—Now that designers can utilize a smaller diameter strand for the guying system, SS offers a lower cost per foot, z586 the user to cut valuable dollars from the cost of a project. Apply a load, corresponding to the tensile stress indicated in Table 5, using the nominal diameter of the specimen. ASTM B r NOTE 2—The extensometer used for the stress at 0. Structural strand is used as a load-carrying tension member where great flexibility and bending are not major requirements.
Joints and Splices 8. Maintain this load and attach the extensometer. Welds made in the outer wires prior to drawing are permitted.
Galvanized Structural Strand ASTM A On Lexco Cable Manufacturers
Maintain this load while a in. The stress corresponding to this load shall meet the requirements for stress at 0. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. WW is also ISO certified.
NOTE 1—A typical ordering description is as follows: