Unit 4 Flashcards
(45 cards)
What is hardness in metals?
The ability of a metal to resist scratching, wear, or deformation.
What is toughness in metals?
The ability to absorb energy and withstand impact without fracturing.
What is malleability in metals?
The ability of a metal to be hammered or rolled into thin sheets without breaking.
What is elasticity in metals?
The ability to return to its original shape after deformation
What is tensile strength in metals?
The ability to resist being pulled apart under tension.
What is density in metals?
The mass per unit volume, affecting weight and use in structures.
What does resistance to corrosion mean?
A metal’s ability to resist rusting or chemical breakdown.
What is thermal conductivity in metals?
How well a metal conducts heat.
What is electrical conductivity in metals?
How well a metal conducts electricity.
Why is melting point important in metals?
It determines how heat-resistant a metal is and its suitability for applications.
What does ability to be alloyed mean?
A metal can be combined with other elements to improve properties.
Why is joinability with heat important in metals?
It allows welding, brazing, or soldering for fabrication.
What does it mean if a metal can take coatings and finishes?
It can be painted, plated, or anodised to improve appearance or protection.
What is low carbon steel used for?
What are its properties?
Car bodies, nails, screws.
Ductile, tough, easily machined but rusts easily.
What is stainless steel used for?
What are its properties?
Sinks, cutlery, medical tools.
Corrosion-resistant, tough, hard, expensive.
What is high speed steel (HSS) used for?
What are its properties?
Drill bits, cutting tools.
Very hard, retains hardness at high temperatures.
What is medium carbon steel used for?
What are its properties?
Gears, rails, garden tools.
Tougher and harder than low carbon steel, less ductile.
What is cast iron used for?
What are its properties?
Manhole covers, pans, machine bases.
Hard, brittle, good compressive strength.
What is aluminium used for?
What are its properties?
Aircraft, cans, ladders.
Lightweight, corrosion-resistant, good conductor.
Lightweight, corrosion-resistant, good conductor.
What are its properties?
Wiring, pipes, cookware.
Excellent conductor, ductile, corrosion-resistant.
What is zinc used for?
What are its properties?
Galvanising steel, batteries.
Corrosion-resistant, low melting point.
What is silver used for?
What are its properties?
Jewellery, electronics.
Very conductive, malleable, corrosion-resistant.
What is gold used for?
What are its properties?
Jewellery, electronics.
Highly ductile, corrosion-resistant, excellent conductor.
What is titanium used for?
What are its properties?
Medical implants, aerospace.
Strong, corrosion-resistant, lightweight.
