Copper-AluminiumBeryllium-freeIn production
NC4
CuAl10Ni5Fe4 · C63000
NC4 AMS 4640 is a nickel-aluminium bronze (UNS C63000, CW307G) for aerospace and marine parts. It combines high hardness and strength with resistance to sea water, and is commonly used for landing gear bushings.
320–469 MPaYield strength
689–760 MPaTensile strength
10–13 %Elongation
180–201 HBHardness HB
Specify this grade
Qualification packs are released after a short form. Export control applies.
Properties
Guaranteed values, by temper.
- Alloy family
- Copper-Aluminium
- Chemistry family
- CuAlNiFe
- Lead-free
- Yes
Forms
Forms & dimensions available
Bars7 variant(s)
Dimensional ranges and tolerances on request — machining and finishing are in house.
Standards
Standards & equivalences
- 2,0966
- AMS 4640
- ASTM B124
- ASTM B150
- CW307G
Product and process qualifications are listed above. Customer approvals are confidential and are not disclosed.
Applications
Markets & applications
Applications
- Bushings and bearings for landing gear
- Rings for aerospace assemblies
- Distributor bodies
- Screws and forged parts for marine equipment
