GTBL042-13 GTBL042-Callister-v2 August 29, 2007 8:52
Design Questions • 567DESIGN QUESTIONS
Ferrous Alloys
Nonferrous Alloys
13.D1Below is a list of metals and alloys:Plain carbon steel Magnesium
Brass Zinc
Gray cast iron Tool steel
Platinum Aluminum
Stainless steel Tungsten
Titanium alloySelect from this list the one metal or alloy
that is best suited for each of the following
applications, and cite at least one reason for
your choice:
(a)The block of an internal combustion en-
gine
(b)Condensing heat exchanger for steam
(c)Jet engine turbofan blades
(d)Drill bit
(e)Cryogenic (i.e., very low temperature)
container
(f)As a pyrotechnic (i.e., in flares and fire-
works)
(g)High-temperature furnace elements to
be used in oxidizing atmospheres
13.D2Of the following alloys, pick the one(s) that
may be strengthened by heat treatment,
cold work, or both: 410 stainless steel, 4340
steel, F10004 cast iron, C26000 cartridgebrass, 356.0 aluminum, ZK60A magnesium,
R56400 titanium, 1100 aluminum, and zinc.
13.D3Discuss whether it would be advisable to hot
work or cold work the following metals and
alloys on the basis of melting temperature,
oxidation resistance, yield strength, and de-
gree of brittleness: platinum, molybdenum,
lead, 304 stainless steel, and copper.Polymers
13.D4 (a)List several advantages and disadvan-
tages of using transparent polymeric ma-
terials for eyeglass lenses.
(b)Cite four properties (in addition to be-
ing transparent) that are important for
this application.
(c)Note three polymers that may be candi-
dates for eyeglass lenses, and then tab-
ulate values of the properties noted in
part (b) for these three materials.
13.D5Write an essay on the replacement of metal-
lic automobile components by polymers and
composite materials. Address the following
issues: (1) Which automotive components
(e.g., crankshaft) now use polymers and/or
composites? (2) Specifically, what materials
(e.g., high-density polyethylene) are now be-
ing used? (3) What are the reasons for these
replacements?