TUBBY SCRAP METAL SYDNEY RECYCLER Scrap Metal Recycling, Scrap Steel Recycling, Scrap Metal Prices, Scrap Copper Recycling Prices, Scrap Brass Prices, Scrap Aluminium Prices, Scrap Steel

 

Clean copper pipes No1 Grade. No.1 Heavy Scrap Copper - candy. No.1 Heavy Scrap Copper Shall consist of clean unalloyed copper solids and must be uncoated.May include copper clippings, punchings, bus bars, commutator segments clean copper pipe or tubing and Copper wire over 1/16'' thick but free of burnt or brittle wire. This grade is equivalent to the ISRI code CANDY

 

 Copper with solder No2 Grade. No.2 Scrap Copper - No.2 Scrap Copper. Clean unalloyed copper solids. May include clean, oxidized or coated (plated) copper clippings, punchings, bus bars, commutator segments, clean oxidized copper pipe or tubing free of excessive solder and light gauge clean, oxidized or coated (plated) copper wire but free of fine gauge hair wire. Should be free of excessive oxidation, scale, ash or brittle burnt wire.

Copper/Aluminum Rads - Copper/Aluminum Rads. Copper/Aluminum Rads shall consist of unalloyed copper tubing surrounded by aluminum cooling fins derived from typical heat exchange radiators.Equivalent to ISRI code TALK.

Light Scrap Copper - light copper / leaded light copper. Light Scrap Copper Shall consist of miscellaneous, unalloyed copper solids. May include sheet copper, gutters, downspouts, kettles, boilers, foil and unburned hair wire. May include any thin gauge, high surface area solid copper that has surface oxidation only. minimum copper content of 88% remelt recovery rate. This grade is equivalent to the ISRI code DREAM

Baled Copper pipes for export

Copper Turnings - Copper Turnings. Copper Turnings shall consist of unalloyed copper turnings grindings or borings, may be contaminated with cutting oils

 

 

No.1 Insulated Copper Wire - No.1 Insulated Copper Wire. No.1 Insulated Copper Wire shall consist of plastic insulated unalloyed, uncoated (plated) copper wire, with the copper wire not smaller than 16 gauge (B&S).

No.2 Insulated Copper Wire - insulated copper. No.2 Insulated Copper Wire shall consist of assorted plastic insulated, unalloyed copper wire, free of heavy or double insulation.Included in ISRI code DRUID

No.3 Insulated Copper Wire - Copper scrap wire. No.3 Insulated Copper Wire shall consist of assorted plastic insulated, unalloyed copper wire, includes heavy or double insulation, plastic insulated telephone cable.Included in ISRI code DRUID

No.1 Copper Wire Scrap - copper. No.1 Copper Wire shall consist of clean, uncoated, unalloyed copper wire, not smaller than 16 gauge (B&S) Equivalent to ISRI code Berry

No.1 Bare Bright Copper Wire - copper scrap. No.1 Bare Bright Copper Wire shall consist of bare, uncoated, unalloyed copper wire, not smaller than 16 gauge (B&S) Similar to ISRI code BARLEY with the exception that no green wire is allowed.

     Copper Gutters and downpipes

Copper/Sealed Motors - Copper/Sealed Motors. Copper/Sealed Motors shall consist of sealed electric compressor motors derived from common Refrigerators & freezers.

Copper/Large Electric Motors - Copper/Large Electric Motors. Copper/Large Electric Motors consists of electric motors & large copper coil windings from motors larger than 1 horsepower in size.

Copper/Fractional Electric Motors - Copper/Fractional Electric Motors . Copper/Fractional Electric Motors consists of electric motors & small copper coil windings from motors less than 1 horsepower in size.

Other Scrap Copper - autoparts. starters alts and a/c comp elect motors

Copper Content Scrap - Non ferrous Metals. Copper/brass scrap, electric motors/transformer/starter computers

No.2 Scrap Copper - copper transformer core. transformer copper core,coil

The usual commercial supplies of pure copper are used for the most critical of electrical applications such as the production of fine and superfine enamelled wires. It is essential that purity is reproducibly maintained in order to ensure high conductivity, consistent annealability and freedom from breaks during rod production and subsequent wire drawing. Since the applied enamel layers are thin but have to withstand voltage, they must have no surface flaws; consequently the basis copper wire must have an excellent surface quality. Primary copper of the best grade is used for producing the rod for this work. Uncontaminated recycled process scrap and other scrap that has been electrolytically refined back to grade 'A' quality may also be used.

The copper used for power cables is also drawn from high conductivity rod but to a thicker size than fine wires. The quality requirements are therefore slightly less stringent. The presence of any undesirable impurities can cause problems such as hot shortness which gives expensive failures during casting and hot rolling. For the same reason, scrap containing such impurities can only be used for this purpose if well diluted with good quality copper.

For non-electrical purposes, copper is also used to make large quantities of plumbing tube, roofing sheet and heat exchangers. High electrical conductivity is not mandatory and other quality requirements are not so onerous. Secondary copper can be used for the manufacture of these materials, though still within stipulated quality limits for impurities.

Where scrap copper is associated with other materials, for example after having been tinned or soldered, it will frequently be more economic to take advantage of such contamination than try to remove it by refining. Many specifications for gunmetals and bronzes require the presence of both tin and lead so this type of scrap is ideal feedstock. Normally it is remelted and cast to ingot of certified analysis before use in a foundry. Scrap of this type commands a lower price than uncontaminated copper.

If the scrap is pure copper and has not been contaminated by anything undesirable, a high quality product can be made from it. Similarly, if scrap consists only of one alloy composition it is easier to remelt to a good quality product, although there may have to be some adjustment of composition on remelting.

If scrap is mixed, contaminated or includes other materials such as solder then, when remelted, it will be more difficult to adjust the composition within the limits of a chosen specification. Where lead or tin have been included, but no harmful impurities, it is usually possible to adjust composition by the addition of more lead or tin to make leaded bronzes. For some scrap contaminated with undesirable impurities it is sometimes possible to dilute it when melting so that the impurity level comes within an acceptable specification. All these techniques retain much of the value of the scrap. The way in which alloys can be made from scrap is shown in simplified diagrammatic form in the figure.

Where scrap has been contaminated beyond acceptable limits it is necessary to re-refine it back to pure copper using conventional secondary metal refining techniques that provide a useful supplement to supplies of primary copper

Copper is 100% recyclable.

Virtually all products made from copper can be recycled. Whether in a raw state or contained in a finished product, copper is recyclable at all stages of a product's life cycle.

Copper-based products have a wide range of life spans. For example, electronic devices last just a few years. Electrical cable and water pipes can last several decades. Roofing and other architectural copper products can last over 100 years. Assuming an average life span of 30 years for most copper products, copper's true recycling rate has been calculated to be about 80-85%.

It has also been estimated that at least 80% of all copper ever mined is still in existence - having been recycled time and again and in use today somewhere, somehow.

Much of the copper used in the world comes from recycled sources. This is a significantly higher percentage than is the case for aluminum, which is often regarded as the benchmark metal for recycling effectiveness.

Copper can be considered a "renewable" resource because it can be recycled without any loss of quality (chemical or physical properties). In some instances, recycled copper can be remelted and used without further processing. Recycling is dependent on the efficiency of scrap collection systems, technological factors, economic factors, product design, societal values, and government regulations.

Recycling is an important economic activity with significant environmental benefits. Not only does recycling copper result in more efficient use of natural resources, it also results in energy savings and a reduction of waste sent to landfills. Because copper can be reused, the wealth of this natural resource can be preserved for future generations.

Environmental Facts
We're in no danger of running out of copper. Known worldwide resources of this important and valuable metal are estimated at nearly 5.8 trillion pounds of which only about 0.7 trillion (12%) have been mined throughout history.

Nearly all of that 0.7 trillion (or 700 billion) pounds is still in circulation because copper's recycling rate is higher than that of any other engineering metal.

nearly as much copper is recovered from recycled material as is derived from newly mined ore. Excluding wire production, most of which uses newly refined copper, more than three-fourths of the amount used by copper and brass mills, ingot makers, foundries, powder plants and other industries comes from recycled scrap.

Almost half of all recycled copper scrap is old post-consumer scrap, such as discarded electric cable, junked automobile radiators and air conditioners.

The remainder is new scrap, such as chips and turnings from screw machine production.

No. 1 scrap consists of clean, unalloyed, and uncoated copper solids,clippings, punchings, bus bars, commutator segments, clean pipe and tubing.

No.2 copper scrap is the same but may include oxidized or coated/plated pieces including oxidized or coated copper wire free of excessive oxidation.

When copper scrap is received for recycling it is visually inspected and graded, and analyzed chemically if necessary. Loose scrap is baled and stored until needed. No. 1 scrap material is directly melted and in some cases brought to higher purity while molten (fire refined). Chemical analysis checks the purity level of the copper when the charge is fully melted, and the molten copper is deoxidized and cast into an intermediate shape (billets, cakes, ingots) for further processing. Number 2 scrap is usually electrolytically refined to attain the desired purity level. But first the scrap material is perhaps fire refined somewhat, melted and cast into anodes. These anodes are the raw material used in cathode production. The anodes are then electrolytically refined, essentially an electroplating process in which the anode is electrolytically dissolved into a bath of sulfuric acid and then electroplated out of the solution onto a stainless steel sheet. Thin sheets of pure copper are pulled off the stainless sheet and placed between anode plates in other electrolytic cells where further electroplating transforms these anodes into 99.98% pure copper which builds up into cathodes as it plates out on the thin pure copper starter sheets.

Copper alloys are also recycled. Alloy scrap has to be segregated, kept clean and identified so that the alloying elements and impurity content of each batch are known. Scrap of unknown composition may be melted and analyzed to determine its composition. Alloy recycling is then accomplished by melting together batches of scrap of known composition, perhaps along with virgin material, carefully compounded so that the recycled material has the alloy composition desired

The extent of recycling of "old" or obsolete scrap tends to fluctuate depending on copper prices and other commercial considerations. Recovery rates of old scrap decline when copper prices are low. Old scrap, also called post consumer scrap, consists of discarded electric cable, junked automobile radiators and air conditioners and innumerable other products

Scrap Value - Copper
The usual commercial supplies of pure copper are used for the most critical of electrical applications such as the production of fine and superfine enamelled wires. It is essential that purity is reproducibly maintained in order to ensure high conductivity, consistent annealability and freedom from breaks during rod production and subsequent wire drawing. Since the applied enamel layers are thin but have to withstand voltage, they must have no surface flaws; consequently the basis copper wire must have an excellent surface quality. Primary copper of the best grade is used for producing the rod for this work. Uncontaminated recycled process scrap and other scrap that has been electrolytically refined back to grade 'A' quality may also be used.

The copper used for power cables is also drawn from high conductivity rod but to a thicker size than fine wires. The quality requirements are therefore slightly less stringent. The presence of any undesirable impurities can cause problems such as hot shortness which gives expensive failures during casting and hot rolling. For the same reason, scrap containing such impurities can only be used for this purpose if well diluted with good quality copper.

For non-electrical purposes, copper is also used to make large quantities of plumbing tube, roofing sheet and heat exchangers. High electrical conductivity is not mandatory and other quality requirements are not so onerous. Secondary copper can be used for the manufacture of these materials, though still within stipulated quality limits for impurities.

Where scrap copper is associated with other materials, for example after having been tinned or soldered, it will frequently be more economic to take advantage of such contamination than try to remove it by refining. Many specifications for gunmetals and bronzes require the presence of both tin and lead so this type of scrap is ideal feedstock. Normally it is remelted and cast to ingot of certified analysis before use in a foundry. Scrap of this type commands a lower price than uncontaminated copper.

Scrap Value - Brasses
The recycling of brass scrap is a basic essential of the economics of the industry. Brass for extrusion and hot stamping is normally made from a basic melt of scrap of similar composition adjusted by the addition of virgin copper or zinc as required to meet the specification before pouring. The use of brass scrap bought at a significantly lower price than the metal mixture price means that the cost of the fabricated brass is considerably less than it might otherwise be.

The presence in brass of some other elements such as lead is often required to improve machinability so such scrap is frequently acceptable. Besides the common free-machining brasses, there are many others made for special purposes with properties modified to give extra strength, hardness, corrosion resistance or other attributes, so strict segregation of scrap is essential.

Brass scrap arising from machining operations can be economically remelted but should be substantially free from excess lubricant, especially those including organic compounds that cause unacceptable fume during remelting.

When brass is remelted, there is usually some evolution of the more volatile zinc. This is made up in the melt to bring it back within specification. The zinc is evolved as oxide that is drawn off and trapped in a baghouse and recycled for the manufacture of other products.

Brass to be made in to sheet, strip or wire form must be significantly free of harmful impurities in order to retain ductility when cold. It can then be rolled, drawn, deep drawn, swaged, riveted, spun or otherwise cold formed. It is normal therefore to make it substantially from virgin copper and zinc, together with process scrap arising from processing that has been kept clean, carefully segregated and identified.

Scrap Value - Other Copper Alloys
Copper alloys such as phosphor bronzes, gunmetals, leaded bronzes and aluminium bronzes are normally made to closely controlled specifications in order to ensure fitness for demanding service. They are normally made from ingots of guaranteed composition together with process scrap of the same composition that has been kept carefully segregated. Where scrap has become mixed, or is of unknown composition, it is first remelted by an ingot maker and analysed so that the composition can be suitably adjusted to bring it within grade for an alloy.

Good quality high conductivity copper can be recycled by simple melting and check analysis before casting, either to finished shape or for subsequent fabrication. However, this normally only applies to process scrap arising within a copper works. Where copper has been contaminated and it is required to re-refine it, it is normally remelted and cast to anode shape so that it can be electrolytically refined. If, however, the level of impurities in the cast anode is significant, it is unlikely that the cathode produced will then meet the very high standards required of grade 'A' copper used for the production of fine wires.

Where copper and copper alloy scraps are very contaminated and unsuitable for simple remelting, they can be recycled by other means to recover the copper either as the metal or to give some of the many copper compounds essential for use in industry and agriculture. This is the usual practice for recovery of useable copper in slag, dross or mill scale arising from production processes or from life-expired assemblies of components containing useful quantities of copper

Product Value
If the scrap is pure copper and has not been contaminated by anything undesirable, a high quality product can be made from it. Similarly, if scrap consists only of one alloy composition it is easier to remelt to a good quality product, although there may have to be some adjustment of composition on remelting.

If scrap is mixed, contaminated or includes other materials such as solder then, when remelted, it will be more difficult to adjust the composition within the limits of a chosen specification. Where lead or tin have been included, but no harmful impurities, it is usually possible to adjust composition by the addition of more lead or tin to make leaded bronzes. For some scrap contaminated with undesirable impurities it is sometimes possible to dilute it when melting so that the impurity level comes within an acceptable specification. All these techniques retain much of the value of the scrap. The way in which alloys can be made from scrap is shown in simplified diagrammatic form in the figure.

Where scrap has been contaminated beyond acceptable limits it is necessary to re-refine it back to pure copper using conventional secondary metal refining techniques that provide a useful supplement to supplies of primary copper