The advantages of Copper Rod/Bar :

(1) All elements, without exception, reduce the conductivity and thermal conductivity of copper rods. Any element that solidly dissolves in the copper rod causes lattice distortion of the copper rod, causing wave scattering when free electrons flow in a directional manner, resulting in an increase in resistivity. On the contrary, elements with no or very little solid solubility in the copper rod have little effect on the conductivity and thermal conductivity of the copper rod. It should be noted that some elements have a drastic decrease in solid solubility as the temperature decreases, The precipitation of elemental and metal compounds can not only strengthen copper bar alloys through solid solution and dispersion, but also minimize the decrease in conductivity. This is an important alloying principle for studying high-strength and high conductivity alloys. It should be particularly pointed out that alloys composed of iron, silicon, zirconium (not wrong), chromium and copper bars are extremely important high-strength and high conductivity alloys; Due to the superimposed effects of alloying elements on the performance of copper bars, CoCr Zr series alloys are well-known high-strength and high conductivity alloys ;

(2) The microstructure of copper based corrosion-resistant alloys should be single-phase to avoid electrochemical corrosion caused by the presence of a second phase in the alloy. For this reason, the alloy elements added should have a high solid solubility in copper rods, even infinitely miscible elements. In engineering applications, single-phase brass rods, bronze rods, and white copper rods all have excellent corrosion resistance and are important heat exchange materials ;

(3) Both soft and hard phases exist in the microstructure of copper based wear-resistant alloys. Therefore, during alloying, it is necessary to ensure that the added elements are not only solidly soluble in the copper rod, but also have hard phase precipitation. Typical hard phases in copper rod alloys include Ni3Si, FeALSi compounds, etc., with a phase not exceeding 10%;

(4) Copper bar alloys with polycrystalline transformation in solid state have damping properties, such as Cu Mn alloys, and alloys with thermoelastic martensite transformation in solid state have memory properties, such as Cu Zn Al, Cu Al Mn alloys;

(5) The color of copper bars can be changed by adding alloy elements, such as zinc, aluminum, tin, nickel, etc. As the content changes, the color also changes from red to blue to yellow to white. Reasonable control of the content will obtain imitation gold materials and imitation silver alloys ;

(6) The elements selected for the alloying of copper bars and alloys should be commonly used, inexpensive, and pollution-free. The added elements should follow the principle of diversity and small amounts. The alloy raw materials can be comprehensively utilized, and the alloy should have excellent process performance, suitable for processing into various finished and semi-finished products.