Copper and some of its alloys
Element -
Metal |
Chemical
sign |
Melting-
point |
Egenskaper |
Characteristics |
| Copper |
Cu |
1083
º C |
Main component in bronze-, copper- and brassalloys. |
All bronze-, copper- and brassalloys. |
| Tin |
Sn |
232
º C |
Increases both strengths and hardness. A marine alloy, anti-corrosive in sweet- and saltwater. By grades > 12 % tin. The hardness increases while the plasticity is decreased. |
CuSn5Pb5Zn5
CuSn12
CuPb10Sn
In some high tensile brasses |
| Lead |
Pb |
327
º C |
Lead increases the pressure-proofness of the goods, increases the machineability, lowers the demands for permanent lubrication. By higher grades of lead the material strength (load-capacity, abrasion), goes down. |
CuSn5Pb5Zn5,
CuPb10Sn, in all lead-tin-bronzes. Appears in small amounts in most brasses. |
| Zink |
Zn |
419
º C |
The major ability is to make melted metal run easy. It has the ability to help alloy different metals. Anti-corrosive characteristics. |
CuSn5Pb5Zn5, all brassalloys, in some nickel-copper-alloys. |
| Aluminium |
Al |
660
º C |
Increases both strength and hardness. By grades > 10 % the hardness increases, the elonga-tion is decreased and the fragility is increased. |
CuAl10Ni5Fe4 and all aluminium-bronzes and in many high-tensile brasses |
| Nickel |
Ni |
1450
º C |
Increases the materials abrasion and wear resistance. Anti-corrosive characteristics. |
CuSn5Pb5Zn5, CuAl10Ni5Fe4, in many high-tensile brasses Nickel-copper |
| Iron |
Fe |
1539
º C |
Increases the hardness, creates a fine-grained structure in the material |
Alum. bronzes
High-tensile-brasses |
| Manganese |
Mn |
1245
º C |
Small amounts has a positive impact on the abrasion and wear resistance of the material. |
High-tensile-brasses, Manganese bronzes etc. |
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