ASTM B33 tension test on copper wire specification covers tinned, round, soft, or annealed copper wire for electrical purposes. As stated by the ASTM B33 standard, the tinned wire shall conform to the required tensile strength and elongation. The adherence of coating on the ASTM B33 specified wire shall be determined on representative samples taken before stranding or insulating. The adherence of coating shall be determined by the wrapping and immersion test in addition utilizing the ASTM B33 tension test on copper wire.

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