C63000 / AMS 4640 is the most popular American grade of nickel aluminum bronze. With a chemical composition of approximately 10% aluminium, 5% nickel and 3% iron, it offers high strength, hardness and a very good corrosion resistance, as well as toughness and an excellent resistance to wear, shock and abrasion.

C63000 / AMS 4640 is readily hot worked and offers a good machinability. The alloy displays good erosion and cavitation resistance in seawater and brackish water, together with a good resistance to dilute sulphuric, hydrochloric and non-oxidising acids. Columbia Metals stocks C63000 in the HR50 condition to meet the requirements of AMS4640.

Related Specifications of C63000 / AMS 4640

• CA104
• CA105
• C63020
• CW307G
• ASTM B150
• EN 12163
• BS2874
• BS2875
• 2.0966
• NF A51-116
• NF L14-705
• CuAl10Ni5Fe4
• CuAl9Ni5Fe3 (FR)
• CuAl9Ni5Fe4 (FR)

Nominal Composition of C63000 / AMS 4640

Cu rem, Al 9.5%, Fe 2.5%, Ni 5.5%, Mn 1.5%

Mechanical Properties of C63000 / AMS 4640

Key Features

• Very good strength and toughness
• High resistance to corrosion and erosion
• Retention of properties at cryogenic temperatures
• Excellent resistance to shock, wear and abrasion
• Spark resistance
• Good fabrication and welding properties

Applications of C63000 / AMS 4640

Offshore & marine | Marine fasteners, hardware and fittings

Aerospace | Landing gear components, thrust washers, gears, control bushes, faucet balls, springs and worm wheels

Other | Non-sparking safety tooling, valve stems and seats, wear plates, welding clamps, valve spindles and components, fasteners and bearing bushes

Columbia Metals – a leading supplier of C63000 / AMS 4640

With decades of experience and a huge range of stock, Columbia Metals is an industry leader in the supply of C63000 / AMS 4640 and other high quality specialist engineering alloys.

To buy or learn more about C63000 / AMS 4640 contact us now, or fill in the enquiry form on the right hand side and we will be in touch shortly.