Beryllium copper, also known as beryllium bronze, is a type of Wuxi bronze with beryllium as the main alloy component. It contains 1.7% to 2.5% beryllium and a small amount of nickel, chromium, titanium and other elements. After quenching and aging treatment, the strength limit can reach 1250-1500MPa, which is close to the level of medium-strength steel and equivalent to the hardness of 36-42HRC. Beryllium bronze is the most widely used beryllium alloy, accounting for over 70% of the total beryllium consumption in the world today.
Beryllium bronze
Beryllium bronze has excellent comprehensive performance, with outstanding strength, elasticity, hardness, fatigue strength, and minimal elastic hysteresis effect. In addition, the material also exhibits excellent corrosion resistance, wear resistance, and low-temperature resistance, as well as multiple advantages such as high conductivity, non-magnetic, and no sparks generated during impact. Beryllium bronze has excellent mechanical, physical, and chemical properties. Through heat treatment (solution treatment and aging treatment), beryllium bronze can achieve high strength, high elasticity, high yield strength, and fatigue resistance, similar to special steel.
As a supersaturated solid solution copper-based alloy, beryllium bronze integrates excellent mechanical, physical, chemical, and corrosion resistance properties. Its high conductivity, high thermal conductivity, high hardness, excellent wear resistance, and creep resistance make it perform well in various applications. It is widely used in the manufacture of various mold inserts, replacing steel to produce high-precision, complex-shaped molds, as well as welding electrode materials, die-casting machine components, injection molding machine punches, wear-resistant and corrosion-resistant workpieces, etc.
Classification of Beryllium Bronze
There are two types of beryllium bronze: processed beryllium bronze and cast beryllium bronze.
The commonly used cast beryllium bronze includes Cu-2Fe-0.5Co-0.3Si, Cu-2.6Be-0.5Co-0.3Si, Cu-0.5Be-2.5Co, etc. The beryllium content in processed beryllium bronze should be controlled below 2%, and domestic beryllium copper should be added with 0.3% nickel or 0.3% cobalt. Cast beryllium bronze is used for explosion-proof tools, various molds, bearings, bearing shells, shaft sleeves, gears, and various electrodes.
Commonly used processing beryllium bronze includes Cu-2Fe-0.3Ni, Cu-1.9Be-0.3Ni-0.2Ti, etc. Processing beryllium bronze is mainly used as various advanced elastic components, especially for various components that require good conductivity, corrosion resistance, wear resistance, cold resistance, and non-magnetic properties. It is widely used as membrane boxes, diaphragms, corrugated tubes, micro switches, etc.
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