Revision Questions:
1. Carbon steels are generally categorised according to their carbon content. Explain
characteristics and 2 applications of medium carbon steel.
2. In the four-digit system of steel designation (i.e.1340) what:
a) the first two digits indicate:
b) the last two digits indicate:
3. Give two applications for each metal below
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Alloy steel:
Carbon steel:
Cast iron: Coated steel: Stainless steel:
Aluminium and its alloys: Brass:
Bronze:
Copper and its alloys: Magnesium: Nickel alloys: Refractory metals: Titanium: Zinc: -
4. Give 2 properties for each non-metallic material below
Thermoset polymers
Thermoplastic polymers
Ceramics
Glasses
Elastomer
5. Explain the following heat treatments on a steel product, and what testing methods
are used to check the effect.
Annealing
Quenching
6. List 2 effects on properties of cold rolling over hot rolling.
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7. Describe a powder metallurgy process.
8. List 2 benefits on properties on the following process
(I)
Soldering.
(II)
Brazing
(III)
Welding.
9. List 2 coating methods used on metallic materials.
10. List 2 coating methods used on non-metallic materials.
11. Briefly explain fatigue resistance and what testing is carried out to determine fatigue
strength.
12. What are the benefits of adhesives in joining materials together?
13. Explain creep resistance and name a testing method used to determine the creep
strength of materials.
14. Which metal forming method should be used to result in better visual appearance
having smooth texture and shine.
15. Provide a name of corrosion testing in materials
16. List 2 advantages of using a bolted joint over a welded joint.
17. Explain
(i)
Corrosion of metals
(ii)
Degradation of polymers
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