COPPER NICKEL TIN (ToughMet®) ALLOYS The World's BEST Bearing Material! ToughMet® is a spinodally hardened copper-nickel-tin alloy that combines high strength, lubricity and wear resistance under severe loading conditions. In comparative sleeve bearing tests against a hardened steel shaft, ToughMet® showed unprecedented performance for a metallic bearing material. The PV limit of ToughMet® is more than twice that of most conventional bearing materials. ToughMet® has proven superior to steel, composites, bronzes and babbitted bearings in equipment such as petroleum mud motor rotors and stators, heavy equipment transmission thrust washers, chemical processing valves and heavily loaded journal bearings. Many OEMs have exploited ToughMet®'s lubricity and durability to reduce warranty claims, enhance product reliability and extend or eliminate maintenance cycles. For examples, see our ToughMet® Application Reports. ToughMet® anti-galling alloys are lead and beryllium free and show excellent corrosion and stress corrosion cracking resistance in sea water, chlorides and sulfides. Combined with the patented EquaCastT process, Brush Wellman's heat treatment creates a fine homogeneous microstructure. This creates ultra-microscopic strengthening which is key to the advanced bearing technology. The low coefficient of friction also gives rise to ToughMet®'s excellent machinability, which is at least 3 times that of conventional tool steels. ToughMet® alloys are available in two compositions. ToughMet® 3 contains 15% nickel, 8% tin, balance copper. ToughMet® 3 is available in cast (T3 CX) or wrought (T3 AT )rod and tube as well as a variety of cast shapes. Rod is available to 9" diameter and tube to 23" outside diameter. ToughMet® 2 (T2 CX) contains 9% nickel, 6% tin, balance copper and is available in plate. Plate thickness ranges from ¾" to 12" in widths to 20". For a comprehensive description of chemical, physical and mechanical properties, choose the alloy and product form from the chart below. Click on a page icon  from the chart below to display properties of an alloy and of product forms UNS Designation Brush Alloy Form   Rod/Bar Plate Tube Continuous Cast Shape N/A ToughMet® 2CX       C96900 ToughMet® 3CX   C72900 ToughMet® 3AT