Study Notes Quiz
1. With reference to ship’s side valves:
(a) state why grey cast iron is not a suitable material; (4)
(b) state, with reasons, THREE suitable materials. (6)
(a) Define the meaning of the term alloy, stating why they are used. (3)
(b) Describe the changes in the mechanical properties of steel with increasing amounts of carbon. (4)
(c) List SIX common alloying elements used in the production of steel. (3)
1. (a) Define the term stainless steel, making reference the percentage quantities of its TWO main constituents. (4)
(b) With reference to EACH of the following grades of stainless steel, list ONE of its unique properties and a common use that utilises this property: (i) ferritic; (2) (ii) austenitic; (2) (iii) martensitic.
With reference to austenitic stainless steels:
(a) list the THREE main constituents with approximate percentage composition; (3)
(b) state the main difference between grades 304 & 316 and how this is achieved; (3)
(c) list TWO typical applications for EACH grade stated in part (b) that would be found on a modern vessel.
With reference to EACH of the following materials, list their percentage composition and a different application for EACH material on board, stating, with reasons, why they are suitable for this application:
(a) cupro-nickel;(2)
(b) aluminium bronze;(2)
(c) admiralty brass;(2)
(d) duralumin;(2)
(e) solder.(2)
State, with reasons, a different material suitable for EACH of the following applications:
(a) a large motor vessel propeller;(2)
(b) a centrifugal pump impeller;(2)
(c) a sea water cooled heat exchanger tube;(2)
(d) a 300mm diameter sea water cooling pipe;(2)
(e) a cylinder head of a small auxiliary engine.(2)