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ESPI Metals1050 Benson Way Ashland, Oregon 97520 541.488.8311 telephone 800.638.2581 toll-free 541.488.8313 fax 800.488.0060 toll-free fax sales@espimetals.com |
Precious Metal Prices
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Serving Multinational Manufacturing Companies & Research |
Sterling Silver is an alloy composed of at least 92.5% silver. The remaining 7.5% is almost always copper because, in general, other metals have proved less desirable and are less effective hardeners. Sterling silver is a good conductor of heat and electricity and has good machinability, malleability and ductility.
Typical Properties:
Composition in percent: Ag 92.5 Cu 7.5
Density: 10.36 g/cm3 Liquidus temperature: 788 oC Solidus temperature: 891 oC
Thermal expansion (20 ºC): 1.9*10-5 oCˉ1 Specific heat capacity: 0.245 kJ/kg*K Electrical conductivity (IACS): 96 %
Tensile strength (annealed): 207 MPa Yield strength (annealed): 124 MPa Elongation (annealed): 41 %
Tensile strength (wire, annealed): 283 MPa Elongation (wire, annealed): 40 % Hardness (wire, annealed): 71 HV
Tensile strength (wire, 1/2 hard): 386 MPa Hardness (wire, 1/2 hard): 95 HV
Tensile strength (wire, full hard): 496 MPa Hardness (wire, full hard): 123 HV
Tensile strength (wire, spring hard): 552 MPa Hardness (wire, spring hard): 140 HV |