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Flashcards in properties of materials Deck (20):
1

what is a ferrous metal

metals that contain iron. they are magnetic and corrode easily if not treated. ferrous oxide or rust will occur

2

what is a pure metal

gained straight from ores like iron, copper, aluminium, lead and zinc

3

What is an alloy

Mixture of 2 or more metals

4

What is brass a mix of

Copper and zinc

5

What is bronze a mix of

Copper and tin

6

What is gunmetal a mix of

Copper, tin and zinc

7

What is steel a mix of

Iron and carbon

8

what is a non ferrous metal

any metal that doesn’t contain iron e.g. copper, lead, zinc and aluminium

9

What is thermoplastic

Polymer resin makes it. Can be heated and reshaped, but when frozen it becomes brittle. They are recyclable

10

What is a PVCu

Unplasticised polyvinyl chloride

11

What is PVCu used for

Cold water pipes
Soil pipes
Water and overflow pipes
Guttering and down pipes

12

What are the properties for PVCu

Not suitable for hot water
Solvent weld
Push fit

14

What is MDPE

Medium density polyethylene

15

What is MDPE used for

Underground mains (blue)
CWSC

16

What is HDPE

High density polyethylene

17

What is HDPE used for

Underground mains (black)

18

What are the properties of HDPE

Degrades in sunlight
Fusion weld
Push fit
Compression

19

What is thermosetting

Rigid plastics which can cope with high temperatures but are not recyclable

20

Examples of thermosetting plastics are...

Formica and Bakelite

21

What are the properties of MDPE

Degrades in sunlight
Fusion welded
Push fit
Compression