document history. astm b196/ b196m- 18. revises: astm b196/ b196m- 07. alloy 25 c17200 rod and bar data sheet. the following three alloys are included:. c17200, temper td04( h) beryllium copper per astm- b196 ( rod/ bar) or astm- b197 ( wire), uns no. step 3 –