High-end beryllium copper alloys are mainly used in machinery and electronics industries. Due to its excellent and unique properties as a conductive spring material, it is mainly used in connectors, IC sockets, switches, relays, micro motors and automotive electrical devices. Adding 0.2~2.0% beryllium to copper, its strength is the highest in copper alloys, and it also has excellent relationship between tensile strength and electrical conductivity. In addition, its formability, fatigue resistance and stress relaxation are also other Copper alloys can’t match. Its main points can be summarized as follows:
1. Sufficient hardness and strength: After many tests, beryllium copper can achieve maximum strength and hardness through the hardening conditions of precipitation.
2. Good thermal conductivity: The thermal conductivity of beryllium copper material is conducive to controlling the temperature of plastic processing molds, making it easier to control the molding cycle, and at the same time ensuring the uniformity of the mold wall temperature;
3. Long service life of the mold: Budgeting the cost of the mold and the continuity of production, the expected service life of the mold is very important for the manufacturer. If the strength and hardness of beryllium copper meet the requirements, beryllium copper will affect the mold temperature. The insensitivity of stress can greatly improve the service life of the mold,
4. Excellent surface quality: Beryllium copper is very suitable for surface finishing, can be directly electroplated, and has very good adhesion performance, and beryllium copper is also easy to polish.
Beryllium copper is a copper alloy with beryllium as the main alloying element, also known as beryllium bronze. It is a high-grade elastic material with the best performance among copper alloys. It has high strength, elasticity, hardness, fatigue strength, small elastic lag, corrosion resistance, wear resistance, cold resistance, high electrical conductivity, non-magnetic, and no sparks when impacted. A series of excellent physical, chemical and mechanical properties. The classification of beryllium copper is divided into processed beryllium bronze and cast beryllium bronze. Commonly used cast beryllium bronzes are Cu-2Be-0.5Co-0.3Si, Cu-2.6Be-0.5Co-0.3Si, Cu-0.5Be-2.5Co, etc. The beryllium content of processed beryllium bronze is controlled below 2%, and domestic beryllium copper is added with 0.3% nickel or 0.3% cobalt. Commonly processed beryllium bronzes are: Cu-2Be-0.3Ni, Cu-1.9Be-0.3Ni-0.2Ti, etc. Beryllium bronze is a heat treatment strengthened alloy. Processed beryllium bronze is mainly used as various advanced elastic components, especially various components that require good conductivity, corrosion resistance, wear resistance, cold resistance, and non-magnetic properties. It is widely used as diaphragm, diaphragm, bellows, micro switch Wait. Casting beryllium bronze is used for explosion-proof tools, various molds, bearings, bearing bushes, bushings, gears and various electrodes. Oxides and dusts of beryllium are harmful to human body, and precautions should be taken in production and use.
Beryllium copper is an alloy with good mechanical, physical and chemical properties. After quenching and tempering, it has high strength, elasticity, wear resistance, fatigue resistance and heat resistance. At the same time, beryllium copper also has high electrical conductivity. High thermal conductivity, cold resistance and non-magnetic, no sparks on impact, easy to weld and braze, excellent corrosion resistance in atmosphere, fresh water and sea water. Corrosion resistance rate of beryllium copper alloy in seawater: (1.1-1.4)×10-2mm/year. Corrosion depth: (10.9-13.8)×10-3mm/year. After corrosion, there is no change in strength and elongation, so it can be maintained in seawater for more than 40 years, and it is an irreplaceable material for submarine cable repeater structures. In sulfuric acid medium: in sulfuric acid with a concentration of less than 80% (room temperature), the annual corrosion depth is 0.0012-0.1175mm, and the corrosion is slightly accelerated when the concentration is greater than 80%.
Beryllium Copper Properties and Parameters
Beryllium copper is a supersaturated solid solution copper-based alloy. It is a non-ferrous alloy with good combination of mechanical properties, physical properties, chemical properties and corrosion resistance. After solid solution and aging treatment, it has high strength limit, elasticity and elasticity. Limit, yield limit and fatigue limit, and at the same time have high electrical conductivity, thermal conductivity, high hardness and wear resistance, high creep resistance and corrosion resistance, widely used in the manufacture of various mold inserts, instead of steel production High-precision, complex-shaped molds, welding electrode materials, die-casting machines, injection molding machine punches, wear-resistant and corrosion-resistant work, etc. Beryllium copper tape is used in micro-motor brushes, mobile phones, batteries, and products, and is an indispensable and important industrial material for national economic construction. High-performance beryllium copper mainly focuses on various working conditions of non-ferrous metal low-pressure and gravity casting molds. Through in-depth research on the failure cause, composition and internal relationship of metal liquid corrosion resistance of beryllium bronze mold materials, it has developed high electrical conductivity (thermal), high The high-performance beryllium bronze mold material combined with strength, wear resistance, high temperature resistance, high toughness and corrosion resistance of molten metal solves the problems of low pressure of domestic non-ferrous metals, easy cracking and wear of gravity casting molds, etc., and significantly improves the life of the mold , demoulding speed and casting strength; overcome the adhesion of molten metal slag and erosion of the mold; improve the surface quality of the casting; reduce the production cost; make the life of the mold close to the imported level. High-performance beryllium copper hardness HRC43, density 8.3g/cm3, beryllium content 1.9%-2.15%, it is widely used in plastic injection mold inserts, mold cores, die-casting punches, hot runner cooling systems, thermal nozzles, blowing The overall cavity of plastic molds, automobile molds, wear plates, etc.
Uses of beryllium copper
At present, the use of beryllium copper is mainly used in the manufacture of molds. Beryllium copper strip can be used to make electronic connector contacts, make various switch contacts, and make important key components, such as diaphragms, diaphragms, bellows, spring washers, micro-motor brushes and commutators, electrical plugs Parts, switches, contacts, clock parts, audio components, etc. Beryllium copper is a copper matrix alloy material with beryllium as the main element. Its scope of application is only when the beryllium copper material is used under the requirements of high thermal conductivity, high hardness and high wear resistance. Beryllium copper can be divided into strips, plates, rods, wires, and tubes in the form of materials. Generally speaking, there are three types of beryllium copper. 1. High elasticity 2. High thermal conductivity and high hardness 3. High hardness and high wear resistance used on electrodes. Compared with other brass and red copper, beryllium copper should be said to be a light metal. In a broader scope, physical materials are generally divided into two types: 1. Structural materials and 2. Functional materials. Functional materials refer to materials that exhibit special properties such as electricity, magnetism, light, biology, and chemistry other than mechanical properties. Structural materials generally focus on the mechanics of their materials and various conventional physical properties. In this sense, beryllium copper should belong to structural materials. Beryllium copper material has its own characteristics, which can give full play to the essence of the material in use.
Long service life of beryllium copper molds: budgeting the cost of molds and the continuity of production, the expected service life of molds is very important for manufacturers. When the strength and hardness of beryllium copper meet the requirements, beryllium copper will affect the mold temperature. The insensitivity of stress can greatly improve the service life of the mold. Before determining the use of beryllium copper mold materials, the yield strength, elastic modulus, thermal conductivity and temperature expansion coefficient of beryllium copper should also be considered. Beryllium copper is far more resistant to thermal stress than die steel. Excellent surface quality of beryllium copper: beryllium copper is very suitable for surface finishing, can be directly electroplated, and has very good adhesion, and beryllium copper is also easy to polish. Beryllium copper has excellent thermal conductivity, good mechanical properties and good hardness. It is generally used in areas where the injection temperature of the product is high, it is not easy to use cooling water, and the heat is concentrated, and the product quality requirements are relatively high! But be careful if beryllium copper is toxic!
Beryllium copper, also known as beryllium bronze, is the “king of elasticity” in copper alloys.
product. High-strength cast beryllium bronze alloy, after heat treatment, not only has high strength, high hardness, but also has the advantages of wear resistance and corrosion resistance, excellent casting performance, beryllium bronze alloy is suitable for the manufacture of various molds, explosion-proof safety tools, wear-resistant Components such as cams, gears, worm gears, bearings, etc. High conductivity cast beryllium copper alloy, which has high electrical conductivity and thermal conductivity after heat treatment, beryllium copper alloy is suitable for making switch parts, strong contacts and similar current-carrying components, making clamps, electrode materials and plastic molds for resistance welding , Hydroelectric continuous casting machine mold inner sleeve, etc.
High beryllium copper has the characteristics of high strength, high hardness, high conductivity, high elasticity, wear resistance, fatigue resistance, corrosion resistance and small elastic hysteresis. It is mainly used in temperature controllers, mobile phone batteries, computers, auto parts, micro Motors, brush needles, advanced bearings, glasses, contacts, gears, punches, all kinds of non-sparking switches, all kinds of welding electrodes and precision casting molds, etc.
High-performance beryllium copper mainly focuses on various working conditions of non-ferrous metal low-pressure and gravity casting molds. Through in-depth research on the failure cause, composition and internal relationship of metal liquid corrosion resistance of beryllium bronze mold materials, it has developed high electrical conductivity (thermal), high The high-performance beryllium bronze mold material combined with strength, wear resistance, high temperature resistance, high toughness and corrosion resistance of molten metal solves the problems of low pressure of domestic non-ferrous metals, easy cracking and wear of gravity casting molds, etc., and significantly improves the life of the mold and casting strength; overcome the adhesion of molten metal slag and erosion of the mold; improve the surface quality of the casting; reduce the production cost; make the life of the mold close to the imported level. High-performance beryllium bronze mold material hardness is between (HRC) 38-43, density is 8.3g/cm3, the main addition element is beryllium, containing beryllium 1.9%-2.15%, it is widely used in plastic injection molding. Die cores, die casting punches, hot runner cooling systems, thermal nozzles, integral cavities of blow molds, automotive molds, wear plates, etc.