copper composite panel
Name: | copper composite panel |
---|---|
Metal Type | Copper |
Grade of Copper | T2 |
Thickness of Copper Skin | 0.3mm or 0.5mm |
Composite Panel Thickness | 4mm |
Core | Mineral filled FR core |
Panel width | 600mm, 800mm, 1000mm |
Panel length | 1000mm to 5800mm |
Product Detail
As an architectural metal, copper composite panel provides excellent corrosion resistance. Copper surfaces form tough oxide-sulfate patina coatings that protect underlying copper surfaces and resist corrosion for a very long time.
copper composite panel corrodes at negligible rates in unpolluted air,
water, de-aerated non-oxidizing acids, and when exposed to saline solutions, alkaline solutions,
and organic chemicals. Copper roofing in rural
atmospheres corrodes at rates of less than 0.4 mm in 200 years.
Unlike most other metals, copper composite panel does not suffer from
underside corrosion that can cause premature failures in roofing. With a copper
roof, supporting substrates and structures usually fail long before the copper
on the roof.
Architectural copper panel is, however, susceptible to
corrosive attack under certain conditions. Oxidizing
acids, oxidizing heavy-metal salts, alkalis, sulfur and nitrogen
oxides, ammonia, and some sulfur and ammonium compounds can expedite
copper corrosion. Precipitation in areas with a pH less than 5.5 may
corrode copper, possibly before a patina or protective oxide film has the time
to form. Acidic precipitation, known as acid rain,
is due to emissions from fossil fuel combustion, chemical manufacturing, or other processes
that release sulfur and nitrogen
oxides into the atmosphere. Erosion
corrosion may occur when acidic water from a non-copper roof
that does not neutralise the acidity, such as tile, slate, wood, or asphalt,
falls on a small area of copper. Line corrosion can occur if the drip edge of
an inert roofing material rests directly on copper. A solution to this may be
to raise the lower edge of the shingles with a cant strip, or to provide a
replaceable reinforcing strip between the shingles and the copper. Proper
water-shedding design and detailing, which reduces the dwell time of acidic
water on metal surfaces, can prevent the majority of atmospheric corrosion
problems.
A
copper weather vane as an architectural element
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