Material Properties

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Elasticity
The ability to RETURN TO ORIGINAL SHAPE AND SIZE AFTER a force is removed. All materials have an ELASTIC LIMIT beyond which, PERMANENT DEFORMATION and ultimately FRACTURE will occur. e.g. SPRING, ELASTIC BAND
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PLASTICITY
The ability to PERMANENTLY DEFORM, WITHOUT FRACTURE when a force is applied which occurs AFTER EXCEEDING THE ELASTIC LIMIT. The deformed material is said to take on a 'PERMANENT SET'. “DUCTILITY” and “MALLEABILITY” are cases of this property
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DUCTILITY
The ability to PERMANENTLY DEFORM, WITHOUT FRACTURE, WHEN A TENSILE FORCE is applied. A material with this property can be drawn into a FINE WIRE, for example.
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MALLEABILITY
The ability to PERMANENTLY DEFORM, WITHOUT FRACTURE, WHEN A COMPRESSIVE FORCE is applied. A material with this property can be hammered, rolled, forged or extruded. E.G. COINS, ALUMINUM FOIL.
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BRITTLENESS
The ABILITY TO FRACTURE, when a force is applied, WITHOUT PLASTIC DEFORMATION. (The opposite of ductility). E.G. BISCUIT, “BREAK GLASS” ALARM.
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TOUGHNESS
The ability to RAPIDLY ABSORB THE ENERGY of a DYNAMIC FORCE and PLASTICALLY DEFORM WITHOUT FRACTURE. A combination of strength and plasticity. E.g. SHIP’S HULL, BULLETPROOF VEST.
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HARDNESS
The ABILITY TO RESIST WEAR, (abrasion, scratching, indentation or penetration) by another material. E.G. DIAMOND, CRANKSHAFT, CYLINDER LINER
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WELDABILITY
The ABILITY TO FUSE WITH A SIMILAR MATERIAL, without impairing its material properties. E.G. MILD STEEL.
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CORROSION RESISTANCE
The ability to RESIST OXIDATION BY THE ENVIRONMENT, to resist returning to its natural state. Types of corrosion: ATMOSPHERIC, CHEMICAL, FRETTING, GALVANIC, HIGH TEMPERATURE, MICROBIAL. E.G. TEFLON AND NOBLE METALS
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CONDUCTIVITY
The ability to transfer: ELECTRICITY, HEAT NOISE and VIBRATION.
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FATIGUE RESISTANCE
A type of resistance. "The tendency of materials to fracture when repeatedly loaded and unloaded with a force which is considerably less than their breaking load”. Approximately 80% of all machinery failures are caused by FATIGUE.
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Other cards in this set

Card 2

Front

The ability to PERMANENTLY DEFORM, WITHOUT FRACTURE when a force is applied which occurs AFTER EXCEEDING THE ELASTIC LIMIT. The deformed material is said to take on a 'PERMANENT SET'. “DUCTILITY” and “MALLEABILITY” are cases of this property

Back

PLASTICITY

Card 3

Front

The ability to PERMANENTLY DEFORM, WITHOUT FRACTURE, WHEN A TENSILE FORCE is applied. A material with this property can be drawn into a FINE WIRE, for example.

Back

Preview of the back of card 3

Card 4

Front

The ability to PERMANENTLY DEFORM, WITHOUT FRACTURE, WHEN A COMPRESSIVE FORCE is applied. A material with this property can be hammered, rolled, forged or extruded. E.G. COINS, ALUMINUM FOIL.

Back

Preview of the back of card 4

Card 5

Front

The ABILITY TO FRACTURE, when a force is applied, WITHOUT PLASTIC DEFORMATION. (The opposite of ductility). E.G. BISCUIT, “BREAK GLASS” ALARM.

Back

Preview of the back of card 5
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