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457152
Res Mat - materials & components
Description
Mind Map on Res Mat - materials & components, created by Keira-Buchanan on 12/29/2013.
Mind Map by
Keira-Buchanan
, updated more than 1 year ago
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Created by
Keira-Buchanan
about 11 years ago
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Resource summary
Res Mat - materials & components
Properties
Strength
Ability to withstand forces without breaking
Hardness
Ability to withstand scratching, rubbing or denting
Toughness
Hard to break or snap
Elasticity
Stretch and bend and return to their normal shape
Plasticity
If a material can change shape permanently without breaking
Impact resistance
Ability to withstand a sudden force without cracking
Chemical resistance
If it degrades when in contact with chemicals
Flexibility
Bend but don't necessarily return to normal shape
Strength to weight ration
Strong but don't weigh much
Woods and Boards
Soft woods
Fairly cheap
Pine, cedar, yew
Hard woods
More expensive
Oak, elm, mahogany
Plywood
Strong, layers, more expensive
MDF & chipboard
Compressed wood chips
Metals
Ferrous
Mild steel
Strong, rusts easily, can't be hardened, cheap
High carbon steel
Can be hardened, not easy to work, rust, fairly expensive
Stainless steel
Hard, won't rust, very expensive
Non-ferrous
Aluminium
Light weight, corrosion resistant, not as strong, cheaper
Brass
Quite strong, corrosion resistant, malleable, aesthetics, expensive
Copper
Soft, malleable, electrical conductor, very expensive
Plastics
Thermoplastics
Recyclable, easy to shape
Acrylic, ABS, HIPS, LDPE, HDPE
Ac. - hard, shiny, brittle
ABS - tough, durable
HIPS - rigid
LDPE - soft & flexible
HDPE - stiff & strong
Thermosetting
Non-recyclable, rigid
Epoxy resin, urea-formaldehyde
Self-finishing - corrosion resistant. Use wet/dry paper or buffing machine
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