ITI Bangla

                                               (COMPUND OF METAL ) 1 ) Brass = Cu 70% + Zn 30 % 2 ) Munz Metal = Cu 60% + Zn 40%  3)  Dutch Metal = Cu 80% + Zn 20% 4) Bronze Metal = Cu 90% + Sn 10% 5) Monel Metal; = Cu 70% + Ni 30% 6) Roolled gold = Cu 90% + Al 10% 7) Bell Metal = Cu 80% + Sn 20% 8) German Silver = Cu + Zn + Ni 9) Delta Metal = Cu60% + Zn 38% + Fe 2% 10 ) GUN Metal = Cu 10% + Sn 1% + Zn 1% + Pb88% 11 ) Stainless steel = Fe 75% + Cr15% + Ni10% + C 12 ) Nickel steel = Fe 95% + Ni 5% 13 ) Nichrome + Ni+ Cr + Mn + Fe 14 ) Solder = Pb 50% + Sn 50% 15 ) Mangnalium = Al 95% + Mg 5% 16 ) Duralumin = Al 64% + Cu 3% + Mg2% +Mn1%

METAL METALS CHAPTER PART - 1 Most important Discussion Below-  M etals which contain iron as a major content are called ferrous metals . The ferrous metals used commonly are –     1. Pig iron 2. Cast iron 3. Wrought iron 4. Still and alloy steel PIG IRON P ig iron is the product of blast furnace . Pig iron is obtained by the Chemical reduction of iron ore, This process of reduction of the iron ore to Pig iron is known as SMELTING. Limestone is the most commonly used flux in the blast furnace.                                              Pig iron contains about 3-5% carbon . It is soft and brittle it lacks strength, ductility and resistance to shock. It is used for making steel and cast iron.;   CAST IRON   C ast iron is the p...