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Toughmet™ Performance
Mechanical properties - ToughMet™ 3 vs. other bearing alloys
Material UNS Number Chemical
Composition
%		 Yield Strength Tensile Strength Elongation (%) Hardness Modulus of Elasticity Fatigue Strength
(108 cycles)
(ksi) (MPa) (ksi) (MPa) (103 ksi) (103 MPa) (ksi) (MPa)
ToughMet™ 3 C 96900
C 72900		 15 Ni, 8 Sn,
Balance Cu		 90-150 620-1030 120-160 825-1100 15-2 HRC 26-36 18.5 128 40-60 275-415
Manganese Bronze C86300 22-28 Zn, 2-4 Fe, 5-8 Al, 2.5-5 Mn, 1 Ni, 60-66 Cu 60 415 110 760 12 HRB 90 14.2 98 25 170
Aluminum Bronze C95400 3-5 Fe, 10-11.5 Al, 1.5 Ni, .5 Mn, 83 M Cu 30 205 75 515 12 BHN 150 15.5 105 28 195
Leaded Tin Bronze C93200 6.3-7.5 Sn, 6-8 Pb, 1-4 Zn, 81-85 Cu 14 95 30 205 10 BHN 65 14.5 100 10 70
Strength and frictional comparison of copper-based bearing alloys
ToughMet™ Alloy System property ranges
Property ToughMetTM
Yield Strength at Room Temp - ksi (MPa) 35-150 (240-1030)
Yield Strength at 600°F (315 °C) - ksi (MPa) 30-1 00 (205-690)
Tensile Strength - ksi (MPa) 65-1 60 (450-1100)
Elongation (%) 45-2
Young’s Modulus - 103 ks (103 MPa) 17-18.5 (117-128)
Hardness (HRC) 20-36
Electrical Conductivity (% IACS) 9-17
Thermal Conductivity - Btu/ft•hr•°F (W/m•°K) 22-40 (39-72)
Magnetic Permeability < 1.001
Thermal Expansion - ppm/°F (ppm/°C) 8.9-9.1 (16-1 6.4)
CVN Toughness - ft-lbs (joules) 200-6 (271 -8)
Fatigue Strength -108 Cycles, R= -1 - ksi (MPa) 25-60 (1 72-415)
Exact property combinations are developed by varying the spinodal heat treatment and depend on temper and size. The mill will temper material to meet customer specifications. Brush Wellman will also help write the needed specifications for your application.
Brush Wellman is proud to announce the development of ToughMet™, a new line of spinodal alloys for bearings. ToughMet™ is the result of work with leading OEM’s, bearing manufacturers, and lubricant & additive producers to create a material to meet a variety of performance demands and to operate in harsh environments. Already proven capable of performing with a variety of shafting materials and lubricants under the widest known range of bearing stresses and speeds, ToughMet™ has advanced bearing technology for today’s high performance machines.

ToughMet™ anti-galling alloys are lead and beryllium free, and perform lead and beryllium free, and perform under high loading at low or high speeds with excellent bearing behavior. Combined with the patented EquaCast™ process, Brush Wellman’s spinodal heat treatment creates a fine homogeneous microstructure. This creates ultra-microscopic strengthening which is key to the advanced bearing technology.
Applications
Mobile Equipment


Linkage Bushings • Thrust Washers •
Wheel Bearings		 Pumps


Cylinder Barrels • Wear Plates • Slippers • Shaft Bushings • Seals • Stators • Rotors • Fasteners		 Trucks, Automobiles, & Motorcycles


Wrist Pin Bushings • Thrust Washers • Valve Guides • Roller Bearing Cages • Cam Roller Pins


Toll-Free: 1-800-552-8729 | Tel: (631) 434-3400 | Fax: (631) 434-3409
Busby Metals, Inc | 55 Davids Drive | Hauppauge, NY 11788

Busby Metals, Inc. is a stocking distributor of brass, bronze, copper, beryllium copper & aluminum bus conductors. Inventory includes rod, bar, sheet, strip, plate, tube, pipe, wire, castings & forgings. specialty alloys available from stock include: aluminum, naval, tobin, commercial, manganese, phosphor & silicon bronzes; beryllium, tellurium, leaded, zirconium, chromium, ETP & oxygen free coppers; free cutting brass; nickel silver; copper nickel. International specifications. Custom shapes. Metric sizes. Metal processing performed. Accredited ISO 9000 and MIL-I-45208A quality system. Chemical & physical test reports available. Technical support provided.