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A material that cannot be stretched or squashed easily

Tensile strength

Compressive strength

shear strength

Bending strength

Torsional strength

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A ability of a material to return to its original form

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A material that can be permanently deformed without fracture

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A material that can withstand hammering without breaking

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A material that allows heat and electricity to flow through it

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A material that breaks or shatters easily

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(a) (i) identify the type of furnace shown-Ark furnace
(ii) Name the material produced in this furnace-Pig iron
(iii)Name part A and describe how the charge is melted-the furnace charge melts an electric passes between the electrodes and the scrap metal the temperature around the ark rises to 1200C  blowing with oxygen to oxidise elements such as carbon, silicon and maganese
(iv)?
(b) (i) Titanium
(ii) the benifets of titanium are its corrosion resistant and its strength to weight ratio.
(c) (i)Hardening, case hardening and annealing
(ii) annealing is carried out by heating to predetermined temperature holding for a certain time and then cooling to room tempreture

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EAF- Electric ARC Furnace of Bangladesh AKS

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Aluminium

Copper

lead

zinc

gold

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Charge-scrap steel

Features-power cables, electrodes, oxygen inlet, tapping spout

Product-Pig iron

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Charge-Molten iron, scrap metal

Features-Water cooled Oxygen lance, Fume hood, Tapping hole, Tilts

Product-Molten steel for general use, slag

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Charge-iron ore, coke and limestone

Features-Hot air stoves, hoppers, refractory, slag drain, ladle, skip

Product-pig iron

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Brass (copper + zinc)

Bronze (copper + tin)

Solar (lead + tin)

Bell metal (copper + tin)

Solder (lead + tin)

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Mild steel

High speed steel

Steel

Carbon steel

Stainless steel

Cast iron