Q1)OFHC copper refers to oxygen-free high-conductivity copper alloys, which are generally types of pure copper alloys. OFHCs are metallic materials from the non-ferrous alloy group, known for their high electrical and thermal conductivity. OFHC produced by direct conversion of selected refined cathodes and castings under carefully controlled conditions to prevent contamination of pure oxygen-free metal during processing. The OFHC copper production method ensures extremely high metal quality with a copper content of 99.98%. With such a small content of foreign elements, the intrinsic properties of elemental copper are enhanced to a high level. The most common OFHC copper alloys are C10100 (OFE) where it contains 99.99% copper and less than 0.2% oxygen and CAD10200 where it contains 99.95% and approximately 1.5 ppm oxygen. Companions that can be found in OFHC leagues are; Copper with 99.98% by weight, Oxygen with less than or equal to 1.5 ppm, Antimony with less than or equal to 0.1 ppm, Arsenic with less than or equal to 0.1 ppm, Nickel with less than or equal to 10 ppm , Manganese with less than or equal to 0.5 ppm, Tin with less than or equal to 2 ppm, Zinc with less than or equal to 1 ppm, Tellurium with less than or equal to 2 ppm, Sulfur with less than or equal to 15 ppm, Silver with less than or equal to 2 ppm equal to 25 ppm, selenium with less than or equal to 3 ppm, phosphorus with less than or equal to 3 ppm, Bisumasu with less than or equal to 0.1 ppm, cadmium with less than or equal to 0.1 ppm , lead with less than or equal to 0.1 ppm equal to 1 ppm and Iron with less than or equal to 1 ppm. OFHC mainly used in building construction and as electronic products.Q2) OFHC has desirable grid properties such as good malleability, ductility, ...... half paper ...... rature Test of copper and copper alloy Temperature, K Properties elastic No. Name and Treatment Young's Modulus, 106 psi (5%) Shear Modulus, 106 psi (2%) 102 Oxygen Free (Cold Drawn 60%) 29519576204 17.320.022.0 Works Cited http://www.copper.org/applications /electrical/building/ http ://engineering.unt.edu/materials/ http://www.ejbmetals.com/pdf/datasheets-metal_strip/Ca101-102.pdf http://www.uom.ac.mu/ faculties/foe/mped/ Students_Corner/notes/EnggMaterials/copper.pdf http://info.ornl.gov/sites/publications/files/Pub35345.pdf http://www.sequoia-brass-copper.com/store/ alloy-c10100-ofe- copper.html http://en.wikipedia.org/wiki/Oxygen-free_copper http://phys.org/news/2012-01-metal-alloys-energy-environment-benefit.html pichttp ://www.orthop .washington.edu/?q=patient-care/articles/what-is-hip-replacement-a-review-of-total-hip-arthroplasty.html