Metals

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Cast iron - FERROUS METALS

properties - hard skin wth soft core, strong under compression but cannot be bent or forged

composition-iron and 3.5% carbon

uses- heavy crushing machinery, car brake discs, vice or machine parts 

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Mild steel - FERROUS METALS

properties - Tough, ductile and malleable . poor resistance to corrosion: cannot be hardened or tempered

composition- iron and 0.15%-0.35% carbon

uses- General purpose  materials : nails, screws, car bodies, furniture frames, building frames and structures

notes- widely available at moderate costs.

(http://cliftonsteel.co.uk/wp-content/uploads/2014/11/mild-steel-sheet.jpg)

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Medium carbon steel - FERROUS METALS

properties - strong and hard, difficult to cut and less ductile, tough or malleable .

composition- iron and 0.4%-0.7% carbon

uses-  gardening tools, springs

(http://www.sunnysteel.com/images/boiler-pipe-a210.jpg)

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High carbon steel _ FERROUS METALS

properties - very hard , difficult to cut and less ductile , tough or malleable

composition-iron and 0.8%-1.5% carbon

uses- screwdrivers, scissors, chisels

(http://ruthknives.com/knives/Carbon-Steel-Fighter.gif)

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Stainless steel- FERROUS METALS

properties - hard and tough but very good at resisiting corrosion

composition-allow of steel that also includes: chromium, nickel, magnesium

uses- sinks, cutlery, work surfaces, dishes.

notes- very tough, difficult to cut and weld.

(http://www.taybrohalloys.co.uk/a/img/products/stainless-steel-plate.jpg)

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High speed steel- FERROUS METALS

properties - very hard, resisitant to friction and can only be sharpened by grinding.

composition- medium carbon steel alloy that also includes ; tungsten, chromium, vandium

uses- lathe cutting tools, drills, milling cutters.

(http://www.westyorkssteel.com/files/2813/5247/5579/high_speed_steel.png)

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Copper - NON FERROUS METALS

properties - malleable, ductile and tough. good conductor of heat and electricity . easily joined . a green PATINA forms when exposed to air or water for long periods of time

composition-pure metal

uses- plumbing fittings, electrical equiptment, roofing

notes-can be quite expensive but polishes well used as a decrative roof finish due to green .

(http://images.wisegeek.com/copper-wire.jpg)

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ALUMINIUM - NON FERROUS METALS

properties - strong for its weight. light, soft and ductile. good conductor of heat and electricity. difficult to join

composition-pure metal but often used as an alloy

uses- kitchen foils. cooking pans an window frames

notes- a non toxic meterial that polishes well

(http://static.parade.com/wp-content/uploads/2014/08/Aluminum-or-Aluminium-ftr.jpg)

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Zinc- NON FERROUS METALS

properties -very weak and heavy. resists corrosion but very difficult to work. often used to electro plate and hot dip ferrous products

composition-pure metal

uses-  galvanising products to protect from rusting e.g roffings, crash barriers, fencing

notes-greylish sliver colour

(http://www.neymetals.com/wp-content/uploads/2015/01/8000AZ-Zinc-Shot-960x390-zc-s.jpg)

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Gold - NONFERROUS METALS

properties - a precious metal that is extremely malleable and ductile. highly resistant to corrosion

composition-pure metal but normally used as an alloy that includes: silver, copper, platinum.

uses- jewellery, fold leaf , ornaments, bullion, electrical contacts

notes- highest rating ( 24 carat) means the purrest metal

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