4. Tin, Tin, Stannum (Sn)
Tin, Tin, Stannum (Sn) is a shiny white metal, very soft with a low melting point that is 2320C. This metal has high corrosion resistance properties so bnayak used as a coating material on a steel plate, used as packaging in a variety of food products because Tin is highly resistant to fruit acids and Juice. Another utility function is as a coating material on plain bearings as well as an alloying element in materials that have a low melting point.
Tin, Tin, Stannum (Sn) is most widely used as well as tin solder alloys in metal-metal bearings like gunmetal or Bronzes and added a little at Copper Zinc alloys (Brass, brasses) to obtain corrosion resistance. Tin, Tin, Stannum (Sn) of tin ore processed (Tinstone), extracsinya done by melting the high temperatures that lead to flow out of a variety of fastening elements.
5. Seng, Zincum (Zn)
Zinc, Zincum (Zn) is a bluish white metal that has a melting point of 4190C, very soft and mushy but it will become brittle when done with formation temperatures between 1000C to 1500C workmanship but until this temperature is still nice and easy to work with. Zinc has corrosion resistant properties so widely used in the steel plate as a protective coating of the steel from corrosion interference effect, other than that Zinc is also used as an alloying element and as a metal alloy base material formed by casting.
Although zinc is an ingredient that is soft but very important role as one of the techniques that have various advantages, both used as a coating material on the steel resistant to corrosion, for example for building roofs, walls and containers must also be resistant to the effects of water and air as well as insects and animals. Zinc is also an alloying element for casting materials.
The raw material is Zinc Sulfide Carbonate, usually located adjacent to the Lead or Lead or sometimes also with Silver. Concentrate is usually done by gravity or flotation. Initial production process is done by reducing the levels of sulfuric acid contained in Zinc Oxide through penggarangan.
The next step is to use one to generate Thermal evaporation and condensate, this process will be obtained from 1 to 2% Lead is known as spelter or rough with 99.99% zinc to be processed further by means of electrolysis and penggarangan process, and through this process the ore Zinc Sulphuric acid will dissolve in accordance with their needs. The next process is penggarangan that mixes in elements Carbon Briquettes before warming through pengolperasian in vertical retorts are Continyu.
6. Manganese (Mn)
Manganese (Mn) metal which has a melting point of 12600C Element Manganese (Mn) is obtained through a process of reduction in manganese ore as the process is carried out in the manufacture of steel. Manganese is used in virtually all types of steel and cast iron as an alloying element despite not produce a significant effect in improving the properties of the steel but not a bad influence because it contains elements of steel in Sulphur. Besides, Manganese (Mn) is an alloying element in Aluminum, Magnesium, Titanium and Brass.
7. Chromium (Cr)
Chromium metal is gray, very hard with high melting point that is 18900C, Chromium derived from chromite elements, are compounds FeO.Cr2. Elements of chromite (Fe 2 Cr
2 06) and Crocoisite (PbCrO4). Chromium has the properties of hard and resistant to corrosion when used as an alloying element in steel and cast iron and with the addition of the element Nickel will be obtained by the hard steel properties and heat resistance (resistance-Alloy Heat).
8. Aluminum (Al)
Aluminum metal is bright white and very shiny with a melting point of 6600C is highly resistant to the effects of Atmosphere also be electrical and Thermal Conductor with a very high coefficient. Chromium is non magnetic. Commercially Aluminum has kemurnianhingga rate of 99.9%, and non-alloy aluminum is its strength 60 N/mm2 and developed melelui cold working process can be improved in accordance with the needs of up to 140 N/mm2. More extensive descriptions of Aluminum can be seen in the description of Aluminum and its alloys.