[国外标准] ASTM B441-04 铜钴铍、铜镍铍和铜镍铅铍的杆材和棒材用标准规范(UNS Nos. C17500、C17510和C17465)
[国外标准] ASTM B441-02 铜钴铍及铜镍铍条和棒的标准规范