Screening Criteria Webster B/ Rockwell F4 (15)/(83) (15)/(83) ---/--(11)/--(15)/(83) (15)/(83) (15)/(83) ---/-----/-----/(959 HB ) ---/(959 HB ) (11)/--(12)/(70) (12)/(70) (12)/(70) (12)/(70) (8)/(50) (8)/(50) (8)/(50) ---/-----/-----/-----/--(8)/(50) Alloy & Temper1 6061-T6 6061-T6 6061-T51 6061-T46 6105-T5&T6 6005-T5&T6 6005-T5&T6 6105-T1 6005-T1 6082-T6 6082-T6 6082-T4 6063-T6 6063-T6 6463-T6 6463-T6 6063-T5 6063-T5 6463-T5 6063-T4 6063-T4 6063-T1 6063-T1 6063-T52 Specified Thickness2 (in) Up Thru
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Likert - type scale Ratio - Count of votes for various candidates in each district. C. Hardness of alloy Nominal - Identification of alloys that include nickel and those that do not. Ordinal - Ranking of hardness by determining which alloys scratch which others. Interval - Use of an interval scale designed to rate alloy hardness. Ratio - Amount of nickel per pound of steel in various alloys. D. Common stock preference Nominal - Industry classification of preferred stocks. Ordinal - Rank
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CORROSION AND ITS CONTROL CORROSION * corrosion can be defined as the degradation of a material due to a reaction with its environment. * Degradation implies deterioration of physical properties of the material. This can be a weakening of the material due to a loss of cross-sectional area‚ it can be the shattering of a metal due to hydrogen embrittlement‚ or it can be the cracking of a polymer due to sunlight exposure. * Materials can be metals‚ polymers (plastics‚ rubbers‚ etc.)‚
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d. Uses of ammonia e. The properties of ammonia f. Manufacture of ammonia g. Preparation of ammonium fertilisers 3) Alloys------------------------------------------------------------------------(11-14) h. Arrangement of atom in metals i. What are alloys? j. The arrangement of atoms in alloys 4) Synthetic Polymers------------------------------------------------------(15-17) k. What are polymers? l. Monomers in synthetic polymers
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that the addition of 1% zirconium to niobium greatly improved the overall strength of the alloy over the soft pure metal. Thus the Nb-Zr alloy became the replacement for pure niobium in applications requiring the chemical resistance of niobium and a material with a high melting temperature. Because of the increasing need for better strengths and the advance of new technologies‚ Nb-Zr has been replaced by alloys such as C-103‚ which has greater strength and thus improved reliability‚ but still retains
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The chemical element copper‚ with Atomic Number 29‚ has been extensively used for thousands of years because of several primary properties that have dictated its use throughout history. Among them we can count durability‚ strength and‚ as a semi-noble metal‚ good resistance to corrosion. With a hardness of 3 on the Mohs scale‚ pure copper is relatively soft and malleable‚ which makes it an easy metal to work with. Analyses of artefacts from lithic civilizations have shown that native copper had not
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STEEL STEM UNITED - ALLOY HEADSET CH - 281 SADDLE UNITED SEATPOST UNITED - STEEL CRANKSET SHIMANO - 48T X 38T X 28T BOTTOM BRACKET CARTRIDGE SEALED BEARING CHAIN YBN - S50 CASSETTE SPROCKET SHIMANO - TOURNEY 14-34T 7 SP SHIFTING LEVER SHIMANO - TOURNEY BRAKE LEVER SHIMANO - TOURNEY F / DERAILLUER SHIMANO - TOURNEY R / DERAILLUER SHIMANO - ACERA FRONT BRAKE ZOOM - MECHANICAL DISC BRAKE REAR BRAKE ZOOM - MECHANICAL DISC BRAKE ROTOR ZOOM - 160MM PEDAL ALLOY TIRE UNITED -
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entry barrier due to the large scale of information and infrastructure already acquired by the biggest companies. Rivalry between Established Competitors: Medium Currently the four biggest search engines are Google‚ Microsoft’s Bing‚ Yahoo‚ and AOL. However‚ Google has the largest piece of the market and seems to be ahead of the others with Bing being on the rise and the rest three very close to each other. Smaller ones such as Altavista‚ Lycos and Excite do not seem to pose a direct threat to
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“Did we want to do the deal? Yes!” This case is based on adapted highlights from date-consecutive articles about Yahoo! by the following journalists‚ in The Times‚ The Sunday Times and Times Online: Suzy Jagger and Mike Harvey‚ along with Murad Ahmed‚ Amanda Andrews‚ Holden Frith‚ Jonathan Richards‚ Dominic Rushe ‚ Dan Sabbagh‚ Christine Seib‚ Susan Thompson‚ ‘Tempus’ and John Waples 19/06/07 Jerry Yang was doing a PhD at Stanford when he and fellow-student‚ David Filo‚ created a website
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relatively high density and are opaque. This silvery‚ ductile metal is not easily oxidized in air and resists corrosion. Tin is usually malleable‚ but when cooled it is very brittle. It is found in many alloys and is used to coat other metals. It can be alloyed with copper to make bronze. Pewter alloys contain about 85% to 99% tin. Tin is obtained from the mineral ore cassiterite‚ where it occurs as an oxide. It is extracted by roasting cassiterite in a furnace with carbon. Tin makes up only about
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