ASTM-A899:91(R2021) pdf free download – Standard Specification for Steel Wire, Epoxy-Coated.
7.5.1 The coated wire shall have a size tolerance of plus or minus 0.004 in. (0. 10 mm) maximum from the ordered nominal diameter.
7.5.2 The uncoated wire intended for epoxy coating shall be produced to a size tolerance that will allow the epoxy coated wire to meet the tolerances of 7.5.1. However in no case will the size tolerance of the uncoated wire be required to be more restrictive than one-half the values of permissible variation in diameter of Table 3 of Specification A510/A5IOM.
7.6 Place of Testing—Tests for coating of steel wire shall be done at the manufacturer’s plant prior to shipment.
7.7 Time of Testing—All requirements for coated wire shall be met at the manufacturer’s plant prior to shipment.
8. Number of Tests
8.1 The purchaser may specify the sampling and test schedule for the number and frequency of tests for thickness of coating, adhesion of coating, and continuity of coating.
8.2 If the number and frequency of tests are not specified by the purchaser:
8.2.1 Tests for thickness of coating and continuity of coating shall be made on each size of wire coated during each production hour.
8.2.2 Bend tests for adhesion of coating shall be conducted on at least one wire of each size from each production shift.
9. Retests
9.1 If the specimen for coating thickness or adhesion of coating fails to meet the specified requirements, two retests on random samples shall be conducted for each failed test. If the results of both retests meet the specified requirements, the coated material represented by the samples shall be accepted.
10. Handling and Identification
10.1 All systems for handling coated wire shall have padded contact areas. Suitable handing shall he used to prevent damage to the coating.
10.2 The identification of all wire shall be maintained throughout the coating process to the point of shipment.
11. Inspection
11.1 The inspector representing the purchaser shall have free entry, at all times while work on the contract of the purchaser is being performed, to all parts of the manufacturer’s works that concern the manufacturer of the material ordered. The manufacturer shall afford the inspector all reasonable facilities to satisfy that the material is being furnished in accordance with this specification. All tests and inspections shall he made at the place of manufacture prior to shipment, unless otherwise specified, and shall he so conducted as not to interfere unnecessarily with the operation of the works.
12. Permissible Coating Damage Due to Handling and
Processing
12.1 All damaged areas of each wire shall be repaired with patching material.