*Mechanical Properties are typical for 1" rod HR50 Temper

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**Test values are nominal approximations and depend on specimen size and orientation.

The values listed above represent reasonable approximations suitable for general engineering use. Due to commercial variations in composition and to manufacturing limitations, they should not be used for specification purposes. See applicable ASTM specification references.

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C63000 NICKEL ALUMINUM BRONZE is an excellent choice for applications involving heavy loads, adhesive wear, friction, abrasive wear, and corrosion. The addition of nickel increases the alloys strength without diminishing its excellent ductility, toughness and corrosion resistance. Alloy C63000 nickel aluminum bronze has gained wide acceptance in the aircraft industry for severe landing gear service in products such as strut bearings, main pistons, trunnion bearings and similar vital components. C63000 Nickel Aluminum Bronze conforms to specifications ASTM B150, AMS 4640, SAE J463, QQ-C-465B, ASME SB150, ASTM B-150, B-124, B-171, B-283, ASME SB171, ASTM B171, QQ-C-450 Class A

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TQ50 and HR50 are temper designations for C63000 nickel aluminum bronze (conforming to the AMS 4640 specification), that refer to the different manufacturing processes used to achieve specific mechanical properties. 

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The primary difference lies in the heat treatment method: 

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HR50 (Drawn and Stress Relieved): This temper is achieved through cold working (drawing) followed by a stress-relieving thermal treatment. It is typically used for smaller diameter rounds (up to 3 inches) and offers high strength.

 

TQ50 (Quench Hardened and Temper Annealed): This temper is produced by quench hardening (rapid cooling from an elevated temperature to form a martensitic phase) followed by a temper annealing process to improve ductility while maintaining high tensile strength and hardness. This process is generally used for larger diameter bars (over 3 inches in diameter), forgings, and other shapes where achieving uniform properties throughout a larger cross-section requires heat treatment rather than cold work. 

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In essence, both tempers meet the requirements of the AMS 4640 specification for C63000 alloy but utilize different processing methods suitable for different product sizes to ensure optimal mechanical performance. 

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C63000 Nickel Aluminum bronze is used for Hydraulic Bushings for Earth Moving Equipment, Corrosion Resistant Articles, Bushings, Bearings, Heat Exchanger Flanges, Heat Exchanger Headers, Tanks, Valve Balls, Structural Members, Pump Shafts, Aircraft Parts, Valve Guides, Plunger Tips, Welded Piping Systems, Balls, Gears, Cams, Pump Parts, Shafting, Condenser Tube for Power Stations and Desalting Units and Valve Seats.