ASTM B441-04 pdf free.Standard Specification for Copper-Cobalt-Beryllium, Copper-Nickel-Beryllium, and Copper-Nickel-Lead-Beryllium Rod and Bar (UNS Nos. C17500, C17510, and C17465). Product furnished to this specification shall conformto the electrical conductivity requirement given in Table 1 forthe applicable temper，when...