2. Review

3. Manufacturing

5. Materials The basic ingredient for Technology

6. Materials Natural - existing in nature Synthetic - derived from natural Combined - Natural + Synthetic

9. Primary Materials

12. Ferrous : contains iron Non - ferrous : contains no iron Alloy - combination of metals

13. Primary Materials A look at 7 popular Metals 1. Aluminum 2. Zinc 3. Copper 4. Lead 5. Tin 6. Chromium 7. Iron

14. Primary Materials Thermoplastics Thermosets Can be reheated and remolded Can be heated and shaped once.

15. Primary Materials Heat induced substance made from clay, sand, and similar substances. Glass can be recycled

17. Properties of materials

18. A material’s reaction to force and loads determines it’s mechanical properties.

19. It’s shape can be changed without breaking it.

20. It can be pulled or pushed out of shape, but will return to it’s original shape.

21. It will keep it’s shape after it has been deformed.

22. When a force is applied, it breaks easily.

23. It cannot be scratched or dented easily.

24. The ability of a material to resist being pulled apart

25. The ability of a material to resist being crushed.

26. Pushing a material in opposite directions at the same time.

27. The ability to carry a load over and over again without wearing out.

28. A material that cannot be twisted easily.

29. The ability of a material to withstand a sudden blow

30. Other properties 4 Thermal 4 Chemical 4 Electrical 4 Optical 4 Acoustical 4 Magnetic