AMS 4640
Description
AMS 4640 is a high-strength aluminum bronze alloy engineered for demanding performance. With mechanical properties surpassing standard nickel aluminum bronze, it is produced through a specialized manufacturing process that makes it ideal for heavy-duty applications under high stress, friction, abrasive wear, and corrosion. Meeting stringent AMS 4640 specifications, this alloy ensures reliable performance in the most challenging mechanical and corrosive environments.
Manufacturing process
Extruded and Drawn Rods
Available in
Round
Key Features
- High mechanical properties
- Good sliding properties
- Corrosion resistant
- High elongation & ductility
- Spark resistant
- High yield point
- Resistant to abrasive wear, friction, deformation & chemical erosion
- Compliant with AMS 4640
- Recommended max. Operating Temperature: 350°C*
*Note: This value is provided for information purposes only. For a detailed assessment, please contact our engineering team to evaluate your specific application conditions.
Applications
- Aircraft bearings & bushings
- Pump & marine shafts
- Valve guides, spindles & seats
- Machine tool parts & wear rings
- Non-sparking safety tools & components in explosive atmospheres
- Suitable for heavy-duty, high stress,
high friction & corrosive environments - Applications in aerospace, oil & gas,
marine & manufacturing industry
Extended Overview
AMS 4640 is widely used in demanding applications where strength and reliability are essential. Its outstanding resistance to abrasive wear, friction, deformation, and chemical erosion makes it a preferred choice across multiple industries. Typical applications include aircraft bearings and bushings, pump and marine shafts, wear rings, valve spindles and seats, and machine tool components. Its spark-resistant properties also make AMS 4640 a safe and reliable option for tools and equipment used in explosive environments.
Mechanical Properties Composition
These are nominal values as these tables are used for comparative purposes. If specific figures are required, please go to the product page and download the technical data sheets for exact specs.
| D kg/dm3 | Rm Mpa | Rp0,2 Mpa | A5 % | HBW | W/m·K | Coefficient of Friction |
|---|---|---|---|---|---|---|
| 7.53 | 814 | 517 | 15 | 228 | 46 | 0.23 |
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