| Temper | Tensile Strength | Elongation A50 | Hardness |
| (Rm,Mpa) | (%) | (HV) |
| R480 | 480-560 | ≥7 | 140-170 |
| R540 | 540-630 | ≥2 | 150-180 |
| TR08 | 520-620 | ≥7 | 160-190 |
Red copper is pure copper, also known as red copper. The color of pure copper is orange or rose, but it will be oxidized into purple when exposed to the air, so it is called red copper. Copper it is not necessarily pure copper, sometimes also add a small amount of deoxidation elements or other elements, to improve the material and performance, so also classified as copper alloy. According to the composition of Chinese 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), and special copper with a small amount of alloying elements (arsenic-copper, telluric-copper, silver-copper). Copper is second only to silver in conductivity and thermal conductivity, and is widely used in making conductive and thermal conductive equipment. Copper in the atmosphere, sea water and some non-oxidizing acids (hydrochloric acid, dilute sulfuric acid), alkali, salt solution and a variety of organic acids (acetic acid, citric acid), has good corrosion resistance, used in chemical industry. In addition, red copper has good weldability, can be made into a variety of semi-finished products and finished products by cold and thermoplastic processing. In the 1970s, the production of red copper surpassed the total production of all other copper alloys. Brass A copper - based alloy with zinc as the main alloying element, so named because it is often yellow in color. Brass has beautiful color, good process and mechanical properties, high electrical conductivity and thermal conductivity, corrosion resistance in the atmosphere, fresh water and sea water, easy cutting and polishing, good welding and cheap. It is widely used in making conductive and thermal components, corrosion-resistant structural components, elastic components, daily hardware and decorative materials, etc. Generally speaking, the cutting performance of brass is better than red copper (red copper is easy to stick knife); In non - cutting, red copper deformation resistance is smaller, easier to form. Copper has a density of 7. 83g/? M3, melting point is 1083 degrees, non-magnetic, has good electrical conductivity, thermal conductivity and corrosion resistance, toughness. The density of brass is 8. 93G/M3, multi-purpose with mechanical bearing liner, wear-resistant. Brass is a Cu-Zn alloy, containing about 80% copper. The hardness is larger than copper, but the electric and thermal conductivity is poor.
