28
Cu
Copper
% 78.0-85.0
CuAl10Ni5Fe4
KUPRAL® 4 | Nickel-Aluminium Bronze
KUPRAL® 4 is a Nickel-Aluminium Bronze | CuAl10Ni5Fe4 grade for bushings, bearings, rods, tubes, plates, and wear-resistant industrial components.
- ISO
- CuAl10Ni5Fe4
- EN
- CW307G
- ASTM
- C63000
- Density
- 7.6 g/cm³
01. Chemical Composition (%)
13
Al
Aluminium
%8.5-11.0
28
Ni
Nickel
%4.0-6.0
26
Fe
Iron
%3.0-5.0
02. Mechanical Properties
| Property | Unit | Value | Test Method |
|---|---|---|---|
| Tensile Strength | N/mm² | min. 640 N/mm² | - |
| Yield Strength | N/mm² | min. 270 N/mm² | - |
| Hardness | HB | min. 180 HB | - |
| Density | - | 7,6 g/cm³ | - |
03. Applications
- In critical engine and gearbox (gear) components requiring high strength and wear resistance
- Propellers resistant to seawater corrosion
- In the manufacturing of heavy-duty bearings, shafts, worm screws, and other gear mechanisms
- Screws exposed to heavy loads or corrosive environments
04. Manufacturing Technology and Supply Forms
Supply FormsHollow Bar / Pipe, Flat Bar / Plate, Round Bar
05. Standards and Comparable Grades
06. Technical Description
View Detailed Technical Description
KUPRAL® 4 technical data
KUPRAL® 4 is available for custom casting, continuous casting, centrifugal casting, machining, and industrial spare-part production.