D_TEXTBLOCK_TEXT Silicon bronze C65100 contains .8-2% silicon, with small amounts of lead, <HL Topic=Iron.sub>IRON</HL>, and zinc, and over 90% <HL Topic=Copper.tpc>COPPER</HL>. This alloy is flexible and can be strengthened by working with it while it is cold. It can be used for pump and valve parts, marine fittings, and bearings.