Q1)
OFHC copper refers to oxygen-free, high conductivity copper alloys, which typically are types of pure copper alloys. OFHC are metallic materials of the group nonferrous alloys, which is known for it is high conductivity of electrical and thermal ability. OFHC produced by the direct conversion of selected refined cathodes and castings under carefully controlled conditions to prevent contamination of the pure oxygen-free metal during processing. The method of producing OFHC copper ensures extra high grade of metal with a copper content of 99.98%. With so small a content of extraneous elements, the inherent properties of elemental copper are brought forth to a high degree. The most common OFHC copper alloys are C10100 (OFE) where it has 99.99% of copper and less 0.2%of oxygen and CAD10200 were it has 99.95% and around 1.5 ppm of oxygen. The companion that could be found in OFHC alloys are; Copper with 99.98% of 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 or equal to 0.5 ppm, Tin with less or more than 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 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 0.1ppm,lead with less than or equal to 1ppm and Iron with less than or equal to 1 ppm . OFHC used mostly in building constructions and as electronic products.
Q2)
OFHC has grate properties that are desirable like good malleability, ductile, ...
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...ratures
Copper
and Copper Alloy Test
Temperature,
K Elastic Properties
No. Name and
Treatment Young’s
Modulus,
106 psi
(5%) Shear
Modulus,
106 psi
(2%)
102 Oxygen Free
(Cold drawn
60%) 295
195
76
20
4 17.3
20.0
22.0
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 pic
http://www.orthop.washington.edu/?q=patient-care/articles/what-is-hip-replacement-a-review-of-total-hip-arthroplasty.html
Sulfur Natarsha Harris Introduction to Chemistry Professor Michael Jones June 7, 2017. Sulfur goes back to the ancient times, but it was called brimstone. In 1979, a French chemist named Antoine Lavoisier recognized sulfur was an element and added it to his list of elements. The element sulfur is considered a nonmetal and is the 10th most abundant element in the universe. On the periodic table, sulfur is in group sixteen
These three sources "Energy Story", "Conducting Solutions", and a video clip "Hands-On Science" share explanations, demonstrations, and descriptions on science experiments to accomplish its purpose. In "Energy Story," it explains the use of electricity people use in their homes, and what makes it. In the video "Hands-On Science" by AnnMarie Thomas, it shows how to make homemade playdough and compare it to store brand playdough. In "Conducting Solutions" by Rodney Schreiner, it shows how certain ions have positive and negative charges. These three sources based on science show us different experiment and how to accomplish them.
These include, high strength, low weight, high chemical resistance and high cut resistance. This material does not corrode or rust and is also unaffected when placed in or under water.
rates. The bigger the atom the more slowly it will take to heat up and
as high as possible during the 20 minutes it will be timed for. And so
A hot plate is acquired and plugged in and if left to warm up. Fill two beakers with 0.075kg of water and record the temperature using a thermometer and record it. Place one of the beakers onto the hot plate and drop one of the metal objects in. Wait for the water to boil and wait two minutes. Take the object out of the water and drop it into the other beaker. Take the temperature of the beaker and record the rise in temperature.
Askeland, Donald R.; Pradeep P. Phulé (2005). The Science & Engineering of Materials (5th ed.). Thomson-Engineering.
It is used with copper to form brass, and it is hard and brittle in it's natural state, less dense than iron and used to make many alloys.
Zn (zinc) these metals will react with hydrochloric acid as they. Fe (iron) is higher in the reactivity series than hydrogen. Sn (tin) and so a displacement reaction will take place. Pb (lead) . H (hydrogen) - a. Cu (copper)
Tungsten is a naturally occurring element that generally occurs as a chemical compound, mainly within ores of wolframite and scheelite, and very rarely in a pure form. Colors range from shiny white to steel-gray, depending on its purity (3). The metal is known for being extremely ductile and as a good conductor of heat and electricity. With the highest melting point, near 3422 degrees Celsius, and the lowest vapor pressure of all the metals, tungsten has a widespread variety of uses, from the mining industry to the healthcare field (2, 3).
The chemical properties of the material used in present model is as shown in table 5.1
Metals possess many unique fundamental properties that make them an ideal material for use in a diverse range of applications. Many common place things know today are made from metals; bridges, utensils, vehicles of all modes of transport, contain some form of metal or metallic compound. Properties such as high tensile strength, high fracture toughness, malleability and availability are just some of the many advantages associated with metals. Metals, accompanied by their many compounds and alloys, similar properties, high and low corrosion levels, and affects, whether negative or positive, are a grand force to be reckoned with.
Numerous factors influence electrical conductivity and resistance, two of them are temperature and length of the wire (these are external factors). Electrical conductivity is defined as the property used to describe how well materials allow electrons to flow, and the degree to which a specific material conducts electricity., Electrical conductivity is calculated as the ratio of the current density in the material to the electric field that causes the flow of current. The SI unit of electrical conductivity is Siemens per meter (S/m). Electrical conductivity is also commonly represented by the Greek letter σ (sigma), but κ (kappa) (especially in electrical engineering) or γ (gamma) are alsowhich are occasionally used. Electrical resistivity quantifies how strongly a specific material opposes the flow of electric current. Electrical resistivity is commonly represented by the Greek letter ρ (rho). The SI unit of electrical resistivity is the ohm⋅metre (Ω⋅m) although other units like ohm⋅centimetre (Ω⋅cm) are also in use.
...oves mach-inability and perfect grain size. Their main purpose is to make further processing operations easier or possible. Bainite, pearlite and ferrite formed through annealing.