1 of 11

�����Engineering Materials

LUCY MOHAPATRA

ASST. PROFESSOR

2 of 11

Materials

  • Over 70,000 different kinds and grades of engineering materials
  • This number grows daily
  • 1,000 different materials

make up an

automobile

3 of 11

The Three Basics:

  • Metals

  • Polymers
    • Composites

  • Ceramics

4 of 11

Metal

  • Cast Iron
  • Steel
    • Mild steel, medium carbon steel, high carbon steel
  • Specialty steel
    • Stainless (tin plated or galvanized)
  • Alloys (two or more pure metals)
    • Steel= iron & carbon
    • Brass= copper & zinc
    • Bronze= copper & tin

5 of 11

Polymers

  • Natural
    • Animal cellulose

  • Synthetic-
    • Thermoplastics
    • Thermosets

6 of 11

Natural Composites

  • Hardwood
    • Deciduous Trees

  • Softwood
    • Coniferous

7 of 11

Ceramics

  • Clay based
    • Structural clay-tile, brick
    • Porcelain
  • Refractories
    • Heat resistant (fire bricks)
  • Glasses
  • Inorganic cements

8 of 11

Hardwoods

  • Ash
  • Beech
  • Birch
  • Cherry
  • Mahogany
  • Maple
  • Oak
  • Poplar
  • walnut

9 of 11

Softwoods

  • Cedar
  • Cypress
  • Fir
  • Pine
  • Redwood
  • Spruce

10 of 11

Manufactured Wood

  • Particle Board
    • flake board, particle board

  • Laminar
    • plywood, laminated beams

11 of 11

Lumber Facts