Mild
Steel - Good for any conditions
and areas that don't have rusting issues. Low
rust resistance.
Zinc Electro galvanization
is the process of bonding a layer of zinc to
steel in order to protect against corrosion.
Although galvanizing will inhibit attack of
the underlying steel, rusting will eventually
be inevitable, especially if the local rainfall
is at all acidic in nature. For example, corrugated
iron sheet roofing will start to degrade within
a few years despite the protective action of
the zinc coating. The protection provided by
this process is insufficient for products that
will be constantly exposed to salt water. For
these locations, stainless steel is preferred.
Nevertheless, most nails made today are electro-galvanized.
See
More 304
Stainless Steel
- Good of all areas and near ocean front areas
and tropical areas that have chances of rust
issues. Good Rust resistance. Not necessary
areas that don't have rust issues.
The type 304 austenitic
stainless steel provides useful resistance to
corrosion on a wide range of moderately oxidising
environments. The alloy is used widely in equipment
and utensils for processing and handling of
food, beverages and dairy products. Heat exchangers,
piping, tanks and other process equipment in
contact with fresh water also utilise these
alloys. Building facades and other architectural
and structural applications exposed to non-marine
atmospheres also heavily utilise the 304 alloy.
See
More 316
Stainless Steel
- Good for all areas and for very close proximity
to the ocean/sea. Very high rust resistance.
Not necessary areas that don't have rust issues.
This austenitic stainless
steel has an increased molybdenum content to
increase its resistance to corrosion when compared
to other 300 series alloys. Types 316 is more
resistant to atmospheric and other mild types
of corrosion than 304 stainless steel. Type
316 stainless steel performs without evidence
of corrosion in the 100-hour, 5% salt spray
(ASTM B117) test. Building facades and other
architectural and structural applications exposed
to marine atmospheres utilise the 316 alloy.
See
More 444
Steel Frame
- Good for similar conditions of 304 stainless
steel frames. This steel can most of the time
be cheaper in cost then 304 stainless steel.
The 444 grade alloy is
a low carbon and low nitrogen ferritic stainless
steel. The alloy is stabilized with additions
of columbium and titanium for resistance to
intergranular corrosion. One big advantage of
the 444 alloy over austenitic stainless steels,
such as 304 and 316 alloys, is the practical
immunity of the AL 444 alloy to chloride stress
corrosion cracking (SCC). The alloy’s enhanced
resistance to pitting and crevice corrosion
combined with its good general corrosion resistance
to a multitude of environments makes it an excellent
choice for a wide range of applications.
See
More |