6.2 Non Ferrous

Question 1

Does a Non Ferrous have iron?

Answer 1

No

Question 2

What temp is Aluminium formed at

Answer 2

900 degrees

Question 3

What is the melting point of Aluminium

Answer 3

660 degrees

Question 4

What is the specific gravity of Aluminium

Answer 4

2.7

Question 5

What are common alloy elements for Aluminium

Answer 5

• Copper
• Magnesium
• Manganese
• Silicone
• Tin
• Zinc

Question 6

In Aluminium Alloy codes what do the digits stand for?

Answer 6

1st = Alloy Type
2nd = Modification of alloy
3rd + 4th = Purity of Aluminium

Question 7

What is the most common Alloy used in aircraft skin

Answer 7

Aluminium alloy 2024

Question 8

What are aircraft rivets commonly made with

Answer 8

Aluminium alloy 2117

Question 9

Where is cast Aluminium Alloy used

Answer 9

• Pump houses
• Gearboxes
• Wheel Hubs

Question 10

What is corrosion

Answer 10

Aluminium Oxide in form of white powder

Question 11

A common Aluminium Protective chemical is

Answer 11

Zinc Chromate ( Alodine )

Question 12

What is annealing?

Answer 12

Heating metal to dissipate stress and grow stress free grains making it softer

Question 13

What is solution heat treatment

Answer 13

allowing alloy to ‘Soak’ at a steady temp to form solid structures then rapidly cooled

Question 14

What is precipition heat treatment

Answer 14

Heat to high temp, quench, heat to medium temp and quench

Question 15

what is the max amount of precipition heat treatment cycles allowed

Answer 15

No more than 3 Cycles

Question 16

Aspects of Magnesium Alloy

Answer 16

Light weight, corrosion resistance, good mechanical properties

Question 17

Aspects of Titanium

Answer 17

Strong, Tough, corrosion resistance, good strength to weight ratio

Question 18

Aspect of Nickel

Answer 18

Silvery white, hard, malleable, ductile, good corrosion resistance