Types of Light Weight Non-ferrous Metals
Light weight Metals:
Light weight of certain non-ferrous
metals is of special importance in aircraft and space industry. Zinc, tin and
lead (with low melting points) are utilized in special applications. Tungsten,
molybdenum and chromium are utilized in products that have got to resist high
temp. Nickel and cobalt also are suitable as heat resistant alloys. Precious
metals (with high cost) aren't only utilized in jewelry, but also in many
applications requiring high electrical conductivity and corrosion resistance.
The border of light and heavy metals
is around 5000 kg/m3. Metals densities below 5000 kg/m3 are called light
metals. The lightest metal is Lithium (density 530 kg/m3) whereas the heaviest metal
is Osmium (with density of 22500 kg/m3). Steel has a density of 7800 kg/m3.
Aluminum (Al):
Aluminum |
It is probably the most important
non-ferrous metal. It has outstanding physical properties (e.g. light weight,
high thermal and electrical conductivity, and corrosion resistance). It is
suitable for all machining, casting and forming operations.
Magnesium (Mg):
Magnesium |
It is the lightest engineering
material. The combination of rarity and good mechanical strength has made it
one among the foremost specified materials in aircraft, space, portable power
tools, luggage and similar applications as competing with the aluminum alloys.
Titanium (Ti):
Titanium |
It is utilized in corrosive
environments or in applications of sunshine weight, high strength and
nonmagnetic properties. It has good heat strength as compared with other light
metals.
Beryllium (Be):
Beryllium |
Beryllium is a recently emergent
material having several unique properties of low density (one-third lighter
than aluminum), high modulus-to-density ratio (six times greater than
ultrahigh-strength steels), high melting point, dimensional stability,
excellent thermal conductivity and transparent to X-rays.
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