High Tin Bronze Alloys
The bronze alloys which are described as tin bronzes have long been recognized for their low lead content (less than .25% lead) and high strength characteristics. These alloys from C90300 through C91000 and C91300 are not materially different than those produced more than 3,500 years ago in Europe and China.
High tin bronze alloys are typically found in gears as well as high-strength bushing and bearing applications where high strength, low speeds and heavy loads are present. Other high-strength applications for these alloys are pump impellers, piston rings, steam fittings and valve bodies. High tin bronze castings are utilized in movable bridge components, turntables for bridges and other structures for fixed and expansion bearings with slow or intermittent movement with heavy loads.