High purity copper refers to the purity of copper metal above 4N (Cu
≥ 99.99%) (N means the purity of copper, the larger the number in front
of N the higher the purity of copper), high purity copper as an emerging
material, in addition to the preparation of high-purity analysis of
standard test materials, electronic industry, a variety of connection
lines, electronic packaging with bonding wire, high-quality audio lines,
integrated circuits, liquid crystal displays, sputtering targets and ion
coating and other high technology It is also an indispensable and
valuable material for the atomic energy, rocket, missile, aviation,
spaceflight and metallurgical industry.
High purity copper is mainly prepared by electrolytic refining method, zone melting refining method and anion exchange method. Our company can provide 4N-6N high purity copper, which can be processed into targets, granules, rods, foils, sheets and other shapes, widely used in high-purity alloy melting, crystal growth, vacuum coating and other fields.
High pure 4N-6N
Copper sample specification and price
99.99% (4N) Copper sample
4N Cu sheet sample
|size:100*100mm||1.9 USD||2.0 USD||2.0 USD||2.2 USD||3 USD||4 USD||5 USD||6 USD||9 USD||14USD||18 USD||23 USD||29 USD|
4N Cu Foil sample
|size:100mm*1m||10 USD||11 USD||11 USD||13 USD||15 USD||18 USD||27 USD||36 USD|
4N Cu Wire sample
|Len: 1m||0.4 USD||0.45 USD||0.5 USD||0.55USD||0.6 USD||0.65 USD||0.7USD||0.85USD||1.2 USD||1.5USD||1.9USD||2.5USD||3.3USD||5.2 USD|
4N Cu stab sample
|Len:100mm||1.5 USD||2.0 USD||2.5 USD||3.0 USD||4.0 USD||5.0 USD||5.5USD||8.0USD||14 USD|
4N Cu Granule sample
|3*5mm||12 USD||29 USD||50 USD|
If you order in large quantities, please contact with us for
99.9999% (6N) Copper sample
6N Cu Wire sample
|Len: 1m|| 2.3
6N Cu Granule sample
|6*6mm/ 3*3mm||5 USD||160 USD|
If you order in large quantities, please contact with us for
Copper Basics Introduction
Copper is a metallic element and a transition element with the chemical symbol Cu and atomic number 29. pure copper is a soft metal with a reddish-orange surface with a metallic luster when first cut, and a purplish-red color on its own. Good ductility, high thermal and electrical conductivity, so in the cable and electrical and electronic components are the most commonly used materials, but also used as construction materials, can be composed of numerous kinds of alloys. Copper alloys have excellent mechanical properties and very low resistivity, the most important of which are bronze and brass. In addition, copper is a durable metal that can be recycled many times without loss of its mechanical properties.
Copper is one of the first metals used by man. The use of copper had a profound impact on the progress of early human civilization as early as prehistoric times, when people began to dig open-pit copper mines and use the obtained copper to make weapons, tools and other utensils. Copper is a metal found in the earth's crust and in the oceans. The content of copper in the earth's crust is about 0.01%, and in individual copper deposits, the copper content can reach 3% to 5%. Most of the copper in nature exists as compounds, i.e. copper ores.
Copper is a purplish-red lustrous metal with a density of 8.92 g/cm3. Melting point 1083.4℃, boiling point 2567℃. It has good ductility. Good thermal and electrical conductivity.
Magnetic properties: antimagnetic
Crystal type: face-centered cubic structure
Resistivity: 1.75×10-8 Ω-m
Speed of sound (room temperature) 3810 (m/s)
Electrolytic copper crystals (very beautiful copper crystals can be obtained by electrolysis)
Electrolytic copper crystals (very beautiful copper crystals can be obtained by electrolysis)(19 pictures)
Young's modulus: 110-128 GPa
Shear modulus: 48 GPa
Poisson's ratio: 0.34
Mohs hardness: 3.0
Vickers hardness: 343-369 MPa
Brinell hardness: 235-878 MPa
Solid density 8.960 g/cm^3
molten liquid density 8.920 g/cm^3
Specific heat capacity: 24.440 J/(mol-K)
Heat of vaporization: 300.4kJ/mol
Heat of melting: 13.26kJ/mol
Thermal conductivity: 401 W/m.K
Coefficient of expansion: (25 °C) 16.5 um/m-K
Chemical valence usually +2, but also +1 (3 valent copper occurs only in a few unstable compounds, e.g. potassium copperate KCuO2)
Content in the earth's crust (ppm): 50
Content in the sun (ppm): 0.7
Ionization energy: 7.726 eV
Flame color : green
Copper is a non-ferrous metal with very close relationship with human beings, is widely used in electrical, light industry, machinery manufacturing, construction industry, national defense industry and other fields, second only to aluminum in the consumption of non-ferrous metal materials.
Electrical and electronic market
The electrical and electronic markets account for about 28% of the total. in 1997, these two markets became the second largest end-users of copper consumption, with a 25% market share.
Transportation equipment is the third largest market for copper, accounting for about 13% of the total, essentially the same as in the 1960s. While the importance of transportation has not changed, the form in which copper is used has changed significantly. For many years, automatic radiators were the most important end user in this area; however, copper use in automatic appliances and electronics has skyrocketed, while use in the heat exchanger market has declined.
Industrial machinery and equipment
Industrial machinery and equipment is another major application market where copper tends to have a relatively long service life. Coins and munitions are the main end users in this area.
In the manufacture of machinery and transport vehicles, it is used in the manufacture of industrial valves and fittings, instruments, slide bearings, molds, heat exchangers and pumps.
In the chemical industry it is widely used in the manufacture of vacuums, distillation pots, brewing pots, etc.
In the defense industry, it is used to manufacture bullets, shells, gun parts, etc. For every 3 million rounds of bullets produced, 13-14 tons of copper are needed.
In the construction industry, it is used for various pipes, pipe fittings, decorative devices, etc.
The antiseptic effect of copper has been known in medicine for a long time. Since the 1950s, copper has also been found to have very good medical uses. Later, Mexican scientists also discovered that copper has anti-cancer properties.
In organic chemistry, organocopper-lithium compounds are an important class of metal-organic compounds.
While copper can be used to make a variety of alloys, the important alloys of copper are as follows.
(1) Brass: Brass is an alloy of copper and zinc, named because of its yellow color. Brass has good mechanical properties and wear resistance, and can be used in the manufacture of precision instruments, parts of ships, shells for guns, etc. Brass knock up sound good, so gongs, cymbals, bells, horns and other musical instruments are made of brass.
(2) nautical brass: copper and zinc, tin alloy, resistant to seawater erosion, can be used to make parts of the ship, balancing device.
(3) bronze: copper and tin alloy called bronze, because of the green color and named. In ancient times, it was a common alloy. Bronze generally has good corrosion resistance, wear resistance, castability and excellent mechanical properties. It is used in the manufacture of precision bearings, high-pressure bearings, mechanical parts for ships that resist corrosion by seawater, and various plates, tubes, and rods. Bronze also has a perverse characteristic - "heat shrinkage and cold expansion".
(4) phosphor bronze: copper and tin, phosphorus alloy, hard, can be made of spring.
(5) white copper: white copper is an alloy of copper and nickel, its color and silver, silver shiny, not easy to rust. Commonly used in the manufacture of coins, electrical appliances, instruments and decorative items