High-purity copper with min. 58 °C/OMEGA electrical conductivity in the annealed state.
Copper Italia produces round, square, hexagonal, trapezoidal extruded bars, either standard or to customer drawing.
All extruded products are available in bars of variable length or in coils of the weight required by the customer.
DATA SHEET – CHARACTERISTICS OF OFHC COPPER.
OFHC Copper is the only one to be produced following a completely oxygen-free process. It meets ASTM B 170 standards and was initially developed to meet the particular needs of modern industrialisation.
The production of OFHC copper (see table) starts with the selection of copper cathodes of a high level of quality and purity, which are melted in an induction oxygen-free atmosphere where any oxygen residual traces on the cathodes are eliminated.
The molten copper obtained is then poured in a holding furnace via a duct in a completely oxygen-free atmosphere, thanks to the gaseous components that prevent contamination. This process also prevents the inclusion of any potentially harmful components in the holding furnace from where the wire rod is then extracted.
COARSE GRAIN STRUCTURE HELPS PREVENT ROUGHNESS AND ENSURE EVEN COATING.
In copper, like in other metals, oxidation and other impurities can be revealed by analysing the grain structure. The impurities are subject to etching by plating solutions. Small particles of undissolved impurities can cause roughness, whereas the purity and structure of OFHC copper ensures a compact texture with an impurity-free smooth surface.
THE ABSENCE OF ADDITIVES MAKES GALVANIC BATHS MORE EFFICIENT.
Since no de-oxidising agents or additives are used in the production of OFHC copper, there are no residual contaminants. In electroplating terms, this means a virtually total elimination of insoluble particles in the bath.
LESS RESIDUE MEANS LESS NEED FOR CLEANING THE PLATING VATS.
The use of OFHC copper results in less residue in the plating vats. The absence of oxides (not detectable by ASTM microscopic tests) combined with the extremely low level of impurities contribute to minimize the amount of residue present in the bath.
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The main features are shown in the table below.
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DATA SHEET – EXTRUDED COPPER BAR SECTIONS.
The following sections of extruded copper bars are available
DATA SHEET – RANGE OF COPPER BARS
The following range of copper bars is available.
DATA SHEET – PACKAGING OF BARS
Standard
Strapped bundle covered with crepe paper at minimum three points, at both ends and in the centre.
With support:
- Bundle wrapped with plastic film
- Bundle strapped and protected with crepe paper at minimum three points, at both ends and in the center
- Wooden bases, min. 50 mm thick, fixed to the pack according to the following schemes:
– 4 bases for bundles up to a 4.2 m in lenght
– 6 bases for bundles of 4.2 – 5 m in lenght
– 6 bases for bundles of 5 – 6 m in lenght
Crates
- Bundle wrapped with plastic film
- Bundle with straps at least every approx. 500 mm
- Wooden base, min. 50 mm thick
Cages
- Bundle wrapped with plastic film
- Wooden base, min. 50 mm thick
Boards
- Bundle wrapped with plastic film
- Bundle placed on wooden boards (an additional wooden board is placed on top of packs weighing over 1000 kg)
- Bundle strapped and protected with crepe paper at minimum three points, at both ends and in the centre
- Wooden base, min. 50 mm thick, fixed to the pack according to the following schemes:
- – 4 bases for bundles up to 4.2 m in length
– 6 bases for bundles of 2-5 m in length
– 6 bases for bundles of 5-6 m in length
Coils
