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
- ASTM B150
- EN 12163
- NF A51-116
- NF L14-705
- 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
|Ultimate Tensile Strength (N/mm²)||Proof Stress (N/mm²)||Elongation (%)||Hardness (HB)|
- 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.