Red copper is pure copper, also known as red copper, which is a simple substance of copper, so named because of its purple-red color. See copper for various properties. Red copper is industrial pure copper with a melting point of 1083°C, no allotropic transformation, and a relative density of 8.9, which is five times that of magnesium. The mass of the same volume is about 15% heavier than ordinary steel. Because it has a rose red color and is purple after an oxide film is formed on the surface, it is generally called copper. It is copper containing a certain amount of oxygen, so it is also called oxygen-containing copper.
Red copper has good electrical conductivity and thermal conductivity, excellent plasticity, and is easy to heat and cold press. It is widely used in the manufacture of electric wires, cables, electric brushes, electric spark copper and other products that require good electrical conductivity.
Commonly used copper alloys are divided into three categories: brass, bronze, and cupronickel. Pure copper is a purple-red metal, commonly known as “red copper”, “red copper” or “red copper”. Red copper or red copper is named for its purple-red color. It is not necessarily pure copper, and sometimes a small amount of deoxidizing elements or other elements are added to improve the material and performance.
Red copper is therefore also classified as a copper alloy. China’s copper processing materials can be divided into: ordinary copper (T1, T2, T3, T4), oxygen-free copper (TU1, TU2 and high-purity, vacuum oxygen-free copper), deoxidized copper (TUP, TUMn), adding a small amount of alloy Four types of elemental special copper (arsenic copper, tellurium copper, silver copper). The electrical conductivity and thermal conductivity of copper is second only to silver, and it is widely used in the production of electrical and thermal equipment. Red copper has good corrosion resistance in the atmosphere, sea water, certain non-oxidizing acids (hydrochloric acid, dilute sulfuric acid), alkali, salt solution and a variety of organic acids (acetic acid, citric acid).
T1 copper strip
T1 copper strip has good electrical conductivity, thermal conductivity, corrosion resistance and processing properties, and can be welded and brazed.
Standard: GB/T 4423-1992
Features and scope of application:
It has good electrical conductivity, thermal conductivity, corrosion resistance and processing properties, and can be welded and brazed. Contains less impurities that reduce electrical conductivity and thermal conductivity. A small amount of oxygen has little effect on electrical conductivity, thermal conductivity and processing performance, but it is easy to cause “hydrogen disease”. It is not suitable for processing (annealing, annealing, Welding, etc.) and use.
T1 chemical composition:
|Copper + silver CuAg: ≥99.95||Iron Fe: ≤0.005|
|Phosphorus P: ≤0.001||Beryllium Sb: ≤0.002|
|Tin Sn: ≤0.002||Sulfur S: ≤0.005|
|Zinc Zn: ≤0.005||Arsenic As: ≤0.002|
|Lead Pb: ≤0.005||Bismuth Bi: ≤0.001|
|Lead Pb: ≤0.005||Oxygen O: ≤0.06|
|Nickel Ni: ≤0.005||Note: ≤0.05 (impurities)|
Tensile strength σb (MPa): ≥275
Elongation δ10 (%): ≥5
Elongation δ5 (%): ≥10
Note: Longitudinal room temperature tensile mechanical properties of bars
Sample size: diameter or distance between opposite sides 5～40
Heat treatment specification: hot working temperature 900～1050℃; annealing temperature 500～700℃; cold work hardened copper recrystallization starting temperature 200～300℃.