Product Description

Beryllium copper is copper alloy with the main alloying elements of beryllium, also known as bronze beryllium. It is a senior elastic material with the best performance among copper alloys. It have a series of excellent physical, chemical and mechanical properties with high strength, elasticity, hardness, fatigue strength, elastic hysteresis, corrosion resistance, abrasion resistance, cold resistance, high-conductive, non-magnetic, no sparking when shocked. After quenched tempering, it have properties of high strength, flexibility, abrasion resistance, fatigue resistance and heat resistance. Meanwhile Beryllium Copper also have properties of high electrical conductivity, thermal conductivity, easy welding and brazing. In the atmosphere, freshwater and seawater, the corrosion resistance is excellent. Beryllium copper alloy corrosion in seawater velocity: (1.**1.4) × ***2mm / years. Corrosion Depth: (*0.***3.8) × ***3mm / years.  After corrosion, there is no change of the strength and elongation, so it can be maintained in the sea for more than *0 years, is a  irreplaceable material for cable repeater structure in bottom of sea. When in sulfuric acid medium: in less than *0% concentration of sulfuric acid (at room temperature) the corrosion depth is 0.*****0.***5mm，when in concentration of greater than *0%, the corrosion is slightly accelerated.

**-Size:length / width <**0mm, thickness <**0mm, single finished piece weight <**0 kg;

**-Chemical Composition:Be: 1.**2.0%, Pb: 0.**0.6%, Co+Ni>=0.2%, Co+Ni+Fe<=0.6%, Other impurities<=0.1%, Cu:Base

**-Temper: A(TB*0), H(TD*4), AT(TF*0), HT(TH*4)

**-Parameters:
Thermal conductivity ≥ **5w/m.k*0 ℃
Tensile strength (Mpa): ***5
Specific gravity (g/cm3): 8.3
Yield strength (0.2%) Mpa: ***5
Softening Temperature (℃): **0
Elongation (%): 1
Elastic Modulus (Gpa): **8
Before quenching hardness ******0HV
After quenching hardness ≥ ****2HRC
Conductivity (IACS%): *8

International Specification:
Strips: ASTM B**4, AMS ***0, ***2; SAE J**1,**3
Plates: ASTM B**4, SAE J**1,**3; AMS ***0, ***3, ***4,AMS ***0, ***1; RWMA Class 4.
European Standards: CuBe2, DIN 2.***7, CW**1C to EN

Note:
ASTM: American Society for Testing and Materials
SAE: Society of Automotive Engineers
AMS: Aerospace Materials Specification (Published by SAE)
RWMA: Resistance Welder Manufacturers' Association
Note: Unless otherwise specified, material will be produced to ASTM.

Application:

1. Precising Plastic Mould. Mould made by beryllium copper material are mainly used in auto-mobile, and some other high precision electronic components.

(1). Excellent surface quality. The plastic products produced by mold using beryllium copper as mold material have a excellent surface quality, smooth, more prcising, as beryllium copper have a high thermal conductivity and good heat penetration, avoiding the temperature diversity in different area and avoiding leaving shrink marks in plastic products. 

(2). Long life of the mould. For the beryllium copper’s character of goo resistance to thermal stress and high hardness, the life of beryllium copper mould is much longer than average mould steel.

(3). Shorter Producing period. As the beryllium copper have a good character of heat penetration, the temperature when producing get cooled at faster speed.

2. Plunger for horizontal cold chamber die casting machine.

 (1).Beryllium copper have a good wear resistance and long service life. For Φ**0mm or below, generally the availability of die times is around ***0, Φ**0mm above generally are available from ***0 to ***0 die times, 7 times as phosphor bronze. Also it can produce some oxidation film, which have a good function of lubricating, and can longer the life of plunger.

   (2) Self-lubricating function. When beryllium copper contact with air, it will form an oxide film on the surface, resulting in self-lubricating, not sticking with steel pressure chamber, Not damaging the pressure chamber. Cast iron punch or steel punch do not form such, so it is easily to damage the pressure chamber, resulting in a great waste, affecting production efficiency;
    (3) Full beryllium copper material, with the whole solution, aging treatment, so the hardness is the same inside and outside. When worn to a certain extent, the punch can have a secondary processing , to a punch which can be used for small a pressure chamber, so that life will be longer;
     (4) Cobalt beryllium copper does not react with the magnesium alloy, is the uniquely suited punch for magnesium alloy die casting machine;

3. Axle bearing, worm gear, turning-nut, and some other wear-resistant parts. Heavy-duty, high-speed using bearings, bushings, such as pressure test pump sets, mine sheave bearings, rolling mill roller bushings; various rigs worm, heavy-duty, pressure valve body are the application.

Beryllium has excellent wear resistance and thermal conductivity, seven times of the wear resistance and **3 times high thermal conductivity than the phosphor bronze. When working, the surface will forming an oxide film, this film has strong adhesion, auto-genous, and the rugged nature, may provide some lubrication and reduce friction, reduce wear. Moreover, the good thermal conductivity bronze distributing high load transmission from the friction member of the heat generated by the rotation, reducing the friction between the melt down. Thus is an ideal wear-resistant material.

Advantage:

 (1) Long life of beryllium copper mold
    For manufacturers, the expected life of the mold is very important.  On the ground of meeting the requirements of strength and hardness,  beryllium copper’s resistance to thermal stress is much stronger than steel mold, the insensitivity to mold temperature’s stress can greatly improve the life of the mold, which both to ensure the continuity of production, and to reduce the cost.  From this point, the long life of beryllium copper is compelling.
    (2) Good thermal conductivity properties of beryllium copper
     Beryllium copper's high thermal properties can help to control the plastics processing mold’s temperature, easier to control the molding cycle,  and can ensure the temperature uniformity of the mold wall. Compared with the steel, beryllium copper’s molding cycle is much shorter, the average temperature of the mold can be reduced about *0%. When the difference between the average temperature of the mold and the average off touch the wall’s temperature is small (for example, mold parts can not easily be cooled in the case) , use the beryllium copper mold material, the cooling time can be reduced by *0% and the mold wall temperature is only reduced by *5%. These features will bring several benefits to the mold manufacturers  using this material: shorting the molding cycle time, increasing the productivity; Good temperature uniformity for mold wall, improving product quality; Reducing the usage of cooling ducts, simplifying the mold structure; Increasing the material’s temperature, thereby reducing the wall’s thickness of small products, reducing product costs.
    (3) Excellent surface quality of beryllium copper
    Beryllium copper is very suitable for surface finishing, plating can be directly processed, and as the adhesion performance is very good, polishing can be very easy. This enables the surface of the product surface to be more smooth, detailed, consistent to the requirements of aesthetics and precision.
    (4) High rate of heat penetration for beryllium copper
    In addition to thermal conductivity, the thermal transmittance of the mold material also do a very important impact on the plastic products. The use of beryllium copper mold, can eliminate the signs of overheating. If the heat penetration is low, the distal end region of the mold wall contact temperature will be higher, so that the mold temperature difference will be large, and in some extreme cases, it may cause changes in the temperature region, extending from the end of the plastic to the other end , so the sink marks might appear in the overheated region.

The advantages of our products:

(1) Price advantage. We are factory directly selling, bypassing a middleman, the profits will be returned to the second class distributors and end customers, to ensure most competitive price.
(2) Quality advantage. Company producing management personnel have many years of experience in producing and researching the beryllium copper. They are trained by the company on the own, have a high degree of understanding and production experience. Along with the improved process control, inspection procedures, it thus ensured that the product quality is much better than domestic counterparts. The rejection rate can be controlled within 1%.
(3) Fast delivery. Efficient production management and convenient transportation ensured the fast shipping speed.