Materials: Metals

Question 1

Classification of Metals:

• F______ Metals; a metal _________ ______ _____ and _____.
• N__-_____ Metals; A ____ that does ____ ______ ____.
• A___; A _____ made of ___ or ____ ____, to ______ a _____ with ________ ________.

Answer 1

Classification of Metals:

• Ferrous Metals; a metal containing mostly iron and carbon.
• Non-ferrous Metals; A metal that does not contain iron.
• Alloy; A metal made of two or more metals, to produce a metal with enhanced properties.

Question 2

Ferrous Metals:

• L__ ca____ _____; Du______, ____ te____ ______, _____, ma______, poor re_____ to _____. Used for; N___, b___ wa____, _____, car bo_____.
• M____ ca______ _____; Ha_____ than LCS, less _______, ma_______ and t______. Used for; sp______, _______ tools (forks).
• C___ ____; ha___ outer ___ but br_____ ___, good u____ co_______. Used for; D___ br____, ma_____ pa___, en___ ____.

Answer 2

Ferrous Metals:

• Low carbon steel; Ductile, hight tensile strength, tough, malleable, poor resistance to corrosion. Used for; Nuts, bolts washers, screws, car bodies.
• Medium carbon steel; Harder than LCS, less ductile, malleable and tough. Used for; Springs, gardening tools (forks).
• Cast iron; Hard outer skin but brittle core, good under compression. Used for; Disc brakes, machine parts, engine blocks.

Question 3

Non-ferrous Metals:

• Al______; ___we_____, du_____, ma______, ________ res_____, el________ and th_______ con_______. Used for; D___ ____, air______ ______, ___ fr_____, wi____ fr____, say______, coo___ ut____, ___ck____.
• C____; d______, ma______, to_____, _______ res______, ____ el_______ and th_____ con_______, can be sold______ and br____. Used for; El________ wires, pr_____ ______ cir_____, ____ pi____, ___ _____ ta___.
• Z___; L__ me_____ _____, ____ ______ res______. Used for; Bu_____, fa_____ ____, int____ __ ca______.

Answer 3

Non-ferrous Metals:

• Aluminium; Lightweight, ductile, malleable, corrosion resistant, electrical and thermal conductor. Used for; Drink cans, aircraft bodies, bike frames, window frames, saucepans, cooking utensils, packaging.
• Copper; Ductile, malleable, tough, corrosion resistance, good electrical and thermal conductor, can be soldered and brazed. Used for; Electrical wires, printed electrical circuits, water pipes, hot water tanks.
• Zinc; Low melting point, good corrosion resistant. Used for; Buckets, farm gates, intricate die casting.

Question 4

Non-ferrous Metals:

• S____; Ma______, d______, _______ res______, can be sol_____. Used for; Jew_______, cu______, used for p_____ other _______.
• G___; Ma_______, d______, ________ res_______, can be sol_____. Used for; Jew______, el_____ com______, conn______, sw_____ com________.
• T______; H____, similar str______ to s___ but more ____we____, high res______ to __rr______. Used for; H__ and jo___ rep________, to___ Im________, spe______ fr_______, _______ and _________.
• T__; D______, ma_______, l__ mel_______ _____, ________ res______. Used for; So__ sol__, coa_____ for _____ c____.

Answer 4

Non-ferrous Metals:

• Silver; Malleable, ductile, corrosion resistance, can be soldered. Used for; Jewellery, cutlery, used for plating other materials.
• Gold; Malleable, ductile, corrosion resistance, can be soldered. Used for; Jewellery, electrical components, connectors, switch components.
• Titanium; Hard, similar strength to steel but more lightweight, high resistance to corrosion. Used for; Hip and joint replacements, tooth implants, spectacle frames, aircrafts and spacecrafts.
• Tin; Ductile, malleable, low melting point corrosion resistance. Used for; Soft solder, coating for food cans.

Question 5

Ferrous Alloys:

• St_____ ____; To_____, h____, _________ res________. Used for; Si___, kit________, cu___.
• H____ sp___ ____; H___, to___, ____ level of res_______ to fri______ ___. Used for; To__ bla___, __ll bi___, mi______ cutt_____, rou__ b___.
• D__ _____; H____, to_____. Used for; Bla______ pun_____ and di__, ex_____ di__, fine _____ _____.

Answer 5

Ferrous Alloys:

• Stainless steel; Tough, hard corrosion resistance. Used for; Sinks, Kitchenware, cutlery.
• High speed steel; Hard, tough, high level of resistance to frictional heat. Used for; Tool blades, drill bits, milling cutters, router bits.
• Die steel; Hard, tough. Used for; Blanking punches and dies, extruder dies, fine press tools.

Question 6

Non-ferrous Alloys:

• Bro____; t_____, ________ res_______, can be c__. Used for; St____, _____, bea_____.
• Bra__; ________ res________, good el_______ and the_______ con_______, low _______ ______, ca___ w___. Used for; Bo__ __tt____, ___ fur______, ___ ____ and ____, orn______.
• Du______; equivalent st_____ properties to ___ ____ but more ___we____, d____, becomes har____ as it is _____. Used for; Ai____ ___, ve____ ____.
• Pe______; ma_______, low _______ _____, ca___ w__. Used for; Tan_______, _____, ______, ph___ fr_____, _______ items.

Answer 6

Non-ferrous Alloys:

• Bronze; tough, corrosion resistance, can be cast. Used for; Statues , coins, bearings.
• Brass; Corrosion resistance, good electrical and thermal conductor, low melting point, casts well. Used for; Boat fitting, door furniture, cast valves and taps, ornaments.
• Duralumin; equivalent strength properties to mild steel but more lightweight, ductile, becomes harder as it is worked. Used for; Aircraft parts, vehicle parts.
• Pewter; Malleable, low melting point, cast well. Used for; Tankards, flasks, goblets, phone frames, decorative items.