This document discusses the properties and classification of metals. It covers ferrous metals like iron and steel as well as non-ferrous metals such as copper, aluminum, and titanium. The document also describes various metal working techniques for cutting, shaping, and machining metals. Common molding and forming processes are outlined, including sand casting, lamination, stamping, and forging. Metals are widely used for their conductivity, strength and recyclability.

1. Materials for Technical Use (II): Metal Department of Technology I.E.S. El Molinillo Guillena © Antonio Jesús Romero

3. High mechanical endurance

4. High fusion temperature

6. It´s a ductile, malleable material

7. Some of them have magnetic properties

9. Non-FerrousMetals: metalsthat do notcontainiron .Thisisbecauseironisthemostused metal in theworld

11. Ironisfragile and brittle.

12. Ironrustseasily.

13. Iron has verygoodmagneticproperties. Due to his low endurance, pure iron is not used. So it´s mixed with a little amount of carbon obtaining ferrous alloys. How changes carbon the iron properties? A bigger amount of carbon in the ferrous alloy increases the hardness but decreases the tenacity, so the alloy becomes more fragile.

15. Silverycolour.

17. Highmechanicalendurance.

18. Theamount of carbonincreaseshardness and fragility.Steel mixed with other metal increases endurance (vanadium) and becomes stainless (chrome and nickel).

20. Harder and more fragilethansteel.

21. It has lowductilitybutit´s amalleablealloywithmagnesium.

22. Itmelts more easilythansteel.It´s used to make complicated parts by sand casting and to make hard tools like rasps.

24. Red colour

25. Excellentthermal and electric conductor

26. Corrosionresistant

27. Goodwelding

28. Veryductile and malleable

29. Tin

30. Bluish white shiny colour

31. Soft

32. Corrosion resistant

34. White colour

35. Very corrosion resistant

36. Aluminum

37. White shiny colour

38. Light and good endurance

39. No toxic

40. Cheap

42. Very light

43. Expensive

44. Violent reaction with oxygen

45. Titanium

46. Veryexpensive

47. Endurancelikesteelbut quite lighter.

49. Themostmalleable and ductile metal

50. Verycorrosionresistant

51. Highthermaland electricconductivity

52. Higheconomicvalue

53. Lead

54. Grey colour

55. Very soft

56. Low melting point

57. Ductile and malleable

59. Yellow colour

60. Very ductile and malleable

61. Good tensile endurance

62. Bronze (Copper+Tin)

63. Darkyellowcolour

64. More endurancethanbrass

65. Verycorrosionresistant

66. Goodsonority

68. Lightness and more endurancethanpurealuminum.

69. Magnesium & Aluminum

70. This alloy is more resistant than each metal.

71. Titanium & Aluminum

73. Obtaining cast iron and steel Coal Iron ore Limestone BlastFurnace Torpedo Ladle Ladle Furnace Refining Furnace We can obtaincastironfromthemelting of coal,iron ore and limestone at theblastfurnace , thenwecarryittotherefiningfurnaceusing torpedo ladleand ladlefurnace. In therefiningfurnacetheamount of carbontoobtainsteeldecreases.

74. Obtaining of metals by electolysis We use a high voltage electric current over the melted metal. Puremetal is attracted by the negative electrode (remember that metal atoms are positive). We can use this method to obtain metals like copper and aluminum.

75. Metal Working To fix and to bend To measure and to mark To cut To split To finish To smooth To drill