AMPCO® 21
Description
AMPCO® 21 is a high-performance aluminum bronze alloy engineered for exceptional wear resistance. With elevated levels of aluminum and iron, it develops a hard gamma-2 phase measuring around 400 HB. Thanks to precise metallurgical control, this phase is evenly distributed throughout the alloy, giving AMPCO® 21 its outstanding ability to withstand wear and abrasion.
Manufacturing process
Centrifugally Casted
Extruded
Forged
Horizontal Continuous Casted
Sand Casted
Available in
Plate
Rectangle
Ring
Round
Key Features
- High strength & hardness
- Good sliding properties
- Corrosion resistant
- Wear-resistant
- No nickel contamination & no galling against stainless steel
- 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
- Sliders in injection molding tools
- Tube bending mandrels
- Centerless grinding work rest blades
- Sliding plates & wear strips
- Plain bearings & guide bushings
- Die rings, rolls & tools in forming, bending & drawing operations
- Applications in plastic processing & steel industry
Extended Overview
AMPCO® 21 is widely used across industries thanks to its superior performance. Ideal for guide port bushings and wear strips, it outperforms hardened steel with greater wear resistance. The alloy also excels as a work rest blade in centerless grinding of steel bars. Its versatility and durability make AMPCO® 21 an essential choice for industries aiming to improve product quality, extend tool life, and reduce production costs.
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 |
|---|---|---|---|---|---|---|
| 7.21 | 758 | 420 | 1 | 286 | 42 | 0.21 |
Documents Download
Academy
Was ist Aluminiumbronze? Eigenschaften, Zusammensetzung und Anwendungsbereiche
Qu'est-ce que le bronze d'aluminium ? Propriétés, composition et utilisations
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