ASTM B559-93 pdf free.Standard Specification for Nickel-Coated, Copper-Clad Steel Wire for Electronic Application.
The lot shall be considered conforming if the con-formance criteria of Specification B 452 have been met fortensile properties and the quality characteristics relative to thebasis wire.The electrical resistivity of each of thefour specimens shall conform to the requirements of Table 2.Failure to meet these requirements shall constitute failure tomeet the resistivity conformance criteria of 6.2.The dimensions of the first sample(Table 4) shall conform to the requirements of Section 7.Ifthere are no failures, the lot shall be considered as conformingto these requirements. If there are failures， but the number ofthese do not exceed the allowable defect number c2(Table 4)for the respective number of units in the sample,a secondsample equal to n, shall be taken and the total defects of then, units shall not exceed the allowable defect number c2.Failure to meet this requirement shall constitute failure to meetthe dimensional conformance criterion.The continuity of the coatingof each of the eight specimens shall conform to the require-ments of 6.3. Failure of more than two specimens shallconstitute failure to meet the continuity criterion. If one or twospecimens fail to meet the continuity criteria, eight additionalspecimens from the lot shall be tested, all of which shallconform to the continuity criterion. However,any individualproduction unit, the specimen from which failed to meet thecontinuity criterion,shall be rejected.
The mass of coating of each of thefour specimens shall conform to the requirements of 6.5.Failure of more than one specimen shall constitute failure tomeet the mass criterion.If only one specimen fails to meet themass criteria，four additional specimens from the lot shall betested,all of which shall conform to the mass criterion.Conformance to the packaging requirements specifiedby the purchaser shall be determined in accordance with Table4.The number of units in the sample showing nonconformanceto the requirements shall not exceed the allowable defectnumber c in Table 4. Failure to meet this requirement shallconstitute failure to meet the packaging conformance criterion.ASTM B559 pdf download.