[DOC] [TLE] Metals Used in Coins and Medals - Tony Clayton's Home Page [PAR] Metals used in Coins and Medals describes the Elements and Alloys used for 
their ... Various forms of brass have been used to make fake gold coins to 
deceive gullible ... Examples are the copper-clad steel of UK one and two penny 
coins, and .... 1909 to date if there were 12 different coins per year (or more if you 
include... [DOC] [TLE] The difference between Gold, Gold Plated and Gold Filled Jewelry ... [PAR] If you're the type of person who appreciates vintage and antique jewelry, you've 
probably ... Pure gold is so soft, however, that it is rarely ever used to make 
jewelry ... Because gold jewelry is usually sold in alloy form, it is important to 
know how ... Gold plated jewelry is jewelry made of a base metal (e.g. copper) or 
silver that... [DOC] [TLE] Tungsten - Wikipedia [PAR] Tungsten, also known as wolfram, is a chemical element with symbol W and 
atomic number 74. ... Tungsten compounds are also often used as industrial 
catalysts. ... If made very pure, tungsten retains its hardness (which exceeds that 
of many steels), and .... The magnetic properties of a metal or an alloy are very 
sensitive to... [DOC] [TLE] Steel - Wikipedia [PAR] Steel is an alloy of iron and other elements, primarily carbon, that is widely used 
in construction .... Other materials are often added to the iron/carbon mixture to 
produce steel with .... The Haya people of East Africa invented a type of furnace 
they used to make .... It consisted of co-melting bar iron (or steel scrap) with pig 
iron. [DOC] [TLE] TRANSITION METALS chemical reactions physical properties uses ... [PAR] chromium Cr, manganese Mn, iron Fe, cobalt Co, nickel Ni and copper Cu. .... 
You find the colours in many gem stones are due to transition metal ions/
compounds in ... (ii) Transition metals and their compounds often have good 
catalytic ..... Brass is a hard wearing alloy of copper and zinc and used to make 
water taps, and... [DOC] [TLE] Uses of Gold in Industry, Medicine, Computers, Electronics, Jewelry [PAR] Colors of gold-silver-copper alloys: Different metal colors that can be ... Gold has 
been used to make ornamental objects and jewelry for thousands of years. .... If 
you are going to spend billions of dollars on a vehicle that when launched will ... 
Crosses, communion ware, and other religious symbols are made with gold for... [DOC] [TLE] Copper, Silver and Gold [PAR] Nov 24, 2002 ... Copper, silver and gold are found in elemental or "native" form at the earth's 
surface. ... This work hardening is seen even when you bend the lid of a tin can 
.... Pure copper is used for electrical conductors, since any alloy ... Speculum 
metal, 89 Cu 33 Sn, is white and can be polished to make good mirrors. [DOC] [TLE] Pocketwatch 101 - Materials Used in Pocketwatch Cases [PAR] If your vintage pocket watch is in a gold-colored case, odds are pretty good ... So 
if you have a vintage watch that's housed in a solid-gold case, consider yourself 
lucky! ... gold would be much too soft to be useful as a metal for making watch 
cases. ... "C.W.C. Co" which was a trademark of the Crescent Watch Case 
Company. [DOC] [TLE] How to tell silver plated from sterling silver? - Finishing [PAR] A. You can try with magnifying glass-if your tray is plated hue of pure silver and ... 
Good luck! ... exact markings (Early American, International Silver Company, 
4133 18 in). ... I was told that the candlesticks are made by Forbes Silver Co of 
Meridian, ..... Q. I have a pitcher that has a symbol stamped on the bottom, made 
in... [DOC] [TLE] The Difference between Silver, Sterling Silver, 900 Silver, 800 Silver ... [PAR] Jun 27, 2014 ... If you buy silver jewelry for collectible purposes, business purposes or ... 
important to know which alloy was used

Question: You're in good company if you know that Co is the symbol for this metal used in making alloys
Answer: Cobalt