| 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.
