Material Descriptions
3003H14 Aluminum
3003 Aluminum alloy is aluminum alloyed with 1.2% manganese,
which increases the strength of the metal over commercially pure aluminum. This alloy has
excellent workability, weldability and corrosion resistance for an aluminum material. It
is widely used for drawing, spinning, fuel tanks, sheet metal work and other applications
requiring moderate strength with good workability. It has higher strength than pure
aluminum (1100 series).
H14 designates the temper, and means the metal has been strain
hardened, and partially annealed. In this condition, the metal can be easily formed, with
a zero bend radius in thicknesses up to 1/32" thick. Embossing or debossing metal in
this temper will not fracture or strain the metal.
Base metal melting point = 1200° , Annealing temperature = 750°
5005/5205 Aluminum
Alloys in this series possess good welding characteristics and
good resistance to corrosion in a marine atmosphere. In addition, this alloy is often
referred to as AQ or Anodize Quality aluminum. The major alloying element of this material
is magnesium in sufficient quantities to cause substantial lowering of the melting point
without producing brittleness in the resulting alloy. When magnesium is used as the major
alloying element or with manganese, the result is a moderate to high strength
non-heat-treatable alloy.
The 5005 variety is anodized with a variety of organic colors. Long-term exposure to bright sunlight may
fade the colors.
The 5205 variety is cobalt-salt impregnated, colored on one side
only, and available only in black. Long-term exposure to sunlight has shown no noticeable
fading.
Base metal melting point = 1150° , Annealing temperature = 650°
430 Stainless Steel; 14-18 Chromium
This high chromium, low carbon stainless steel has good
mechanical and physical properties, good corrosion resistance to many dilute organic acids
and very dilute salt solutions, and has excellent resistance to nitric acid. It withstands
destructive heat scaling up to about 1550° F.
Type 430, when welded, is susceptible to grain growth with some
loss in ductility and toughness. For this reason it is not recommended for welded sections
which will be exposed to shock or vibration in service.
Because of it's strength, toughness, and resistance to heat
oxidation, as well as chemical and atmospheric corrosion, type 430 is used in range oil
burners, heat exchanger flues, oil and gas furnace combustion chambers, and annealing
furnaces.
Type 430 is magnetic.
Base metal melting point = 2600° , Annealing temperature =
1400°
304 Stainless Steel; 18-8 Low Carbon
This grade is similar to type 302 except that a maximum carbon
content of .08% is guaranteed. The lower carbon content was developed to minimize
susceptibility to intergranular corrosion which may result from the carbon separation that
takes place in high carbon 18-8 alloys when the metal is heated within the temperature
range of 900° - 1650° F. In welding, this temperature gradient is always encountered a
slight distance on each side of the weld, in which area carbide separation takes place.
Type 304 is especially recommended for welded construction where
severe corrosive conditions are encountered, such as in the dairy, chemical, paper and
textile industries. This low carbon grade is not ordinarily required for welded
construction subjected only to atmospheric conditions.
Type 304 is non-magnetic.
Base metal melting point = 2550° , Annealing temperature =
1800°
Galvanized Steel
This is a standard commercial quality electro-galvanized steel
sheet which has been electrolytically zinc coated in coils by modern methods. It's zinc
coating is so completely bonded to the base metal that it will not flake or peel under the
most severe forming or drawing operations. It is available with a plain commercial finish
where further processing is not required or bonderized for enameled, lacquered or painted
parts.
Galvanized steel has a silver grey matte finish, generally
acceptable on interior parts. Also has good corrosion resistance, again for interior parts
where added rust protection is required.
Base metal melting point = 2750° , Annealing temperature =
1400°
Electro-tinplated Steel
.25# coat, matte finish, T-1 hardness. Excellent forming
qualities, therefore utilized often for metal plates to be embossed. Also, good
paintability, particularly with matte finish.
Electro-tinplate is an inexpensive material with excellent
properties for stamping applications.
Base metal melting point = 2750° , Annealing temperature =
1400°
260 Cartridge Brass
Copper, 70%; Zinc, 30%
Cartridge brass, 70% has excellent tensile strength and is very
ductile, being better than Yellow Brass in this respect. It can be subjected to severe
cold working in deep drawing, spinning, rolling, stamping, flaring and forming. Formerly
known as Deep Drawing Brass, Grommet Brass, Spring Brass and Spinning Brass, these names
are an indication of its fabricating qualities. It is ideally suited for the production of
artillery and small arms cartridge cases and for musical instruments, snap fasteners,
eyelets, reflectors, lighting fixtures, and automobile radiators.
Base metal melting point = 1750° , Annealing temperature =
1350°
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Last Updated:
April 18, 2007 |