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6.2 Flashcards

1
Q

Non Ferrous

A

No iron

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2
Q

1000 series

A

99% Pure Aluminium

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3
Q

2000 series

A

Copper

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4
Q

3000 series

A

Manganese

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5
Q

4000 series

A

Silicon

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6
Q

5000 series

A

Magnesium

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7
Q

6000 series

A

Magnesium and Silicon

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8
Q

7000 series

A

Zinc

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9
Q

8000 series

A

Lithium and others

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10
Q

Melting point of Pure Aluminium

A

660 °C

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11
Q

Relative Density of Pure Aluminium

A

2.7

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12
Q

Tensile Strength of Pure Aluminium

A

13 KSI

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13
Q

First Digit in Aluminium Association Inc

A

Alloy Type

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14
Q

Second Digit in Aluminium Association Inc

A

Modification

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15
Q

3rd and 4th Digit in Aluminium Association Inc

A

Purity of Aluminium in hundreds of a percentage

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16
Q

If second digit is a zero

A

Indicates the original alloy

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17
Q

What series is Duralumin

A

2000

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18
Q

Where are cast aluminium alloys used

A

Pump housings

Gearboxes

Hubs

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19
Q

What is work hardening

A

Grains in metal gain stresses as they are worked making it harder

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20
Q

Another name for Work Hardening

A

Cold Working or Strain Hardening

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21
Q

What is Solution Heat Treatment

A

Heating Metal to set Temp and rapidly quenching it

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22
Q

What is Age Hardening

A

Allowing Metal to naturally cool as it returns to its Natural / Original Hardness

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23
Q

Annealing

A

Work Hardened material heated to dissipate inner stresses making the material softer

24
Q

What is temper

A

Work used to describe the metal condition

Includes Hardness Malleability and Ductility

25
What is Cladding
Pure Aluminium cold rolled onto AAlloy Pure Aluminium oxides to form protective layer 5% of total thickness
26
What is Artificial Ageing Or Precipitation Treatment
Replicating Age Harding Approx 170 °C for 10 Hrs
27
How long do you have to wait to rivet an Aluminium Alloy after Solution Heat Treatment
24 Hrs
28
Why should you not Overheat Aluminium
Can cause brittleness weakness and roughness on surface
29
How many times can you Heat Treat a Cladded Material and Why
3x Long periods at high temp, Particles can move into Aluminium Alloy
30
Failure to Quench a Material in time will
Impairs Corrosion Resistance
31
How long between removal from Heat Treatment Furnace and Quenching
Max 7 seconds
32
F
Fabricated
33
H
Cold worked with / without Thermal Treatment
34
H1
Cold worked without Thermal Treatment
35
H2
Cold Worked and Partially Annealed
36
H3
Cold Worked and Stabilised by Low Temp Heating
37
What does the second digit after H mean EG H2X
Degree of Hardness
38
Hx2
1/4 hard
39
Hx4
1/2 hard
40
Hx6
3/4 Hard
41
Hx8
Full Hard
42
Hx9
Extra Hard
43
O
Fully soft Annealed
44
T
Heat Treated to Produce Stable Tempers
45
T1
Cooled from Hot working Naturally Aged
46
T2
Cooled from Hot Working Cold Worked Naturally Hardened
47
T3
Solution Heat Treated Cold Worked
48
T4
Solution Head Treated Naturally Aged
49
T5
Cooled from Hot Working Artificially Aged
50
T6
Solution Heat Treated Artificially Aged
51
T7
Solution Heat Treated Stabilised
52
T8
Solution Heat Treated Cold Worked Artificially Aged
53
T9
Solution Heat Treated Artificially Aged Cold Worked
54
T10
Cooled from Hot Working Cold Worked Artificially Aged
55
W
Solution Heat Treated
56
What series are not heat treatable
1000 3000 4000 5000
57
Annealing Temp for Non Heat Treatable Alloys
350-400 °C

Mod 6 (8 decks)

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