Group 1: Ferrous metal*lic materials are those materials containing iron, with steel being the most typical. Carbon plays a large role with these metal*s. They behave differently depending on the amount of carbon in the iron. Typically the more carbon the harder the steel. The drawback is that the more carbon in the steel the more brittle it becomes. Examples:

• Low carbon Steel (iron and from .1 to .3% carbon- example product: bolts)
• Medium carbon Steel ( iron and from .3 to .6% carbon - example product: car axles)
• High carbon Steel (iron and from .6 to 1.7% carbon- example product: hammers)

Group 2: Ferrous metal*lic alloys improve the properties of steel by adding certain elements. Examples

• Stainless steel (add Chromium and Nickel - example product: kitchen ware)
• High Speed Steel (add Tungsten - example product: cutting tools)

Group 3: Non ferrous metal*lic materials. Examples:

• Aluminum (example product: rarely used in unalloyed state)
• Copper (example product: wire)
• Nickel (example product: plating on steel)
• Zinc

Group 4: Non ferrous metal*lic alloys. Examples:

• Aluminum alloys (aluminum plus other elements - example product: airframes)
• Bronze (copper and tin - example product: decorative)
• Brass (copper and zinc - example product: ships hardware)