AMPCO^® 21

• High Wear Resistance: This aluminum bronze alloy is known for its exceptional ability to resist wear and abrasion, making it ideal for applications in high-friction environments.
• Unique Metallurgical Properties: Precise metallurgical control of the alloy ensures uniform distribution of the hard gamma 2 phase, which enhances its wear-resistant properties.
• Versatile Applications: It is suitable for a wide range of applications, including guide bushings, die rings, forming rolls, and centerless grinding workholders.
• Cost-Effective Solution: This alloy offers cost savings by reducing production costs and minimizing friction, resulting in extended tool life and improved product quality.

Properties and Specifications

AMPCO® 21 is a high performance aluminum bronze alloy known for its exceptional wear resistance and unique metallurgical properties. This alloy contains elevated levels of aluminum and iron, resulting in the presence of the hard gamma 2 phase, which measures approximately 400 HB (Brinell hardness). Through precise metallurgical control, this hard constituent is uniformly distributed throughout the material, giving this aluminum bronze alloy its remarkable ability to resist wear and abrasion. It is the preferred choice for a wide range of applications, including guide bushings, die rings, inserts, forming rolls, and work support blades for centerless grinding, especially when machining stainless steel. The alloy’s superior properties make it an invaluable material for maximizing tool speed, improving product quality, reducing production costs, and minimizing friction while eliminating the risk of seizure or scratching.

Applications

AMPCO® 21 is used in a wide variety of industries due to its superior properties. This high performance aluminum bronze alloy is particularly well suited for use in guide port bushings and wear strips, where it replaces hardened steel and provides superior wear resistance. It is also the preferred choice for die rings, inserts, and forming rollers in various forming, bending, or drawing operations, especially when processing stainless steel materials. In addition, the alloy excels as a workholder blade for centerless grinding of steel bars. Its versatility and exceptional durability make it an indispensable material in industries seeking to improve product quality, extend tool life, and reduce production costs.