non ferrous and ferrous metals Flashcards
basic info on metals
Metals are rarely used in their pure form, they are often mixed with other metals to improve their properties. This is known as an alloy. Most metals can be recycled.
definition of Ferrous Metals
Ferrous metals contain Iron and are prone to rusting if exposed to moisture. Due to the iron within them, they can also be picked up by a magnet. Ferrous metals include Cast Iron, Mild Steel, High Carbon Steel, Stainless Steel and High-Speed Steel.
properties and uses of cast iron
Hard skin but softer underneath, but brittle and it corrodes by rusting
Metalwork vices, manhole covers and car brake discs etc.
properties and uses of mild steel
Tough, ductile, malleable, good tensile strength
It will rust if in constant contact with water.
Nuts and bolts, car bodies, building girders
properties and uses of high carbon steel
Very tough and very hard, resistant to abrasion
Used for most tools – chisels, screwdrivers, saws etc.
properties and uses of stainless steel
Hard and tough resistant to wear and corrosion
Cutlery and kitchen equipment
properties and uses of high-speed steel
Brittle but resistant to wear
Milling cutters and lathe tools
non-ferrous metal def
do not contain iron. Examples of non-ferrous metals include Aluminium, Copper, Tin, Zinc and Brass.
properties and uses of aluminium
=suitable for large scale batch production through high pressure die-casting.
=It is very light in weight
does not rust
=excellent heat and electricity conductor: thermal insulator making it ideal for washing in hot water/dishwashers, aluminium will conduct heat and may be too hot to handle when the dishwasher initially finishes, meaning hand washing would be better.
recyclable
=Aluminium has a relatively low melting point for a metal making it ideal for casting
=You can colour aluminum by oxidation or have a finish applied this would not be full thickness and may scratch.
properties and uses of copper
A ductile and malleable metal
It is often red/brown in colour
It is a very good conductor of heat and electricity
Plumbing and electrical components such as telephone wire
properties and uses of tin
Very ductile and very malleable
It is resistant to corrosion from moisture
It is bright silver in appearance.
Coating on food cans, tin foil and soldering
properties and uses of zinc
Very resistant to corrosion from moisture
However, zinc is a very weak material
Coating on screws, steel buckets
It is also used to galvanise steel
properties and uses of brass
An alloy of copper and zinc
Brass is resistant to corrosion, fairly hard, good conductor of heat and electricity
Decorative metal works such, such as door handles and musical instruments
