Copper-Nickel alloy is a metal that is a blend of the two elements of the element Copper (copper) to the Nickel. Metal alloys are divided into two kinds, namely:
1. Cupro-Nickel Namely metal with elements consisting of Copper and Nickel
2. Nickel Silver alloys namely between Copper (Copper), Nickel and Zinc (zinc).
• Cupro-Nickel:
Equilibrium diagram of Cooper-Nickel alloy (Figure 1.12), indicating that this alloy will form a solid solution (Solid Solution) in all comparisons for all alloys and produce materials suitable for hot or cold working. Nickel Elements contained in these alloys is usually between 15 to 680, tensile strength, ductility and kekerasanya developed in accordance with the Nickel content of the element.
Nickel alloys with levels up to 20% is the best in this group for cold working hard, and Nickel alloys with up to 25% levels typically used in the manufacture of Coin on the “British Silver”. As an important metal alloys of this type are called “Monel” the element Nickel alloys with up to 68% of an alloy that is highly resistant to corrosion and can retain its at high temperatures, so Monel is widely used in Steam Turbines.
• Nickel – Silver
Nickel – Silver Silver is not actually contain elements, naming is due to the appearance of this alloy resembles silver. The composition is made up of Copper, Nickel and Zinc (Zinc). All alloys of this type can be worked or formed with spelling (cold working), but to minimize the degree of purity alloys also allows for hot working (hot working).
Copper Nickel Silver contains levels of between 55% to 68% and Nickel alloys with levels between 10% to 30% is widely used in the manufacture of spoons and forks. Alloys made in the form of a plate with type EPNS Nickel degree of unity with levels of 18% is used as an ingredient in the spring contactor electrical equipment.
Copper Alloy Containing Silicon
Copper Alloy Containing Silicon alloy of copper with a slight addition of Silicon element to increase the voltage and resistance to corrosion attack, and this also makes the copper easier to do grafting through welding, where dioxidasi in welding in the metal melting process will be achieved in the presence of the element Silicon . Copper Alloy with Silicon levels up to a maximum of 3% can still be forged (Forging), but if greater than 5% is a Bronze Casting (Casting Bronzes).
Copper Alloy Containing Manganese
Copper Alloy Containing Manganese; Manganese element used in alloys with elements of Aluminum or Copper Nickel on, which will give a very specific electrical properties. This material is very easy to set up forms are very complicated compared with the use of steel. This alloy also has excellent corrosion resistance.