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Johnson Matthey GW Platinum w/ 5% Copper Jewelry Alloy

Category Metal , Nonferrous Metal , Precious Metal , Platinum Alloy
Manufacturer Johnson Matthey
Trade Name
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Johnson Matthey GW Platinum w/ 5% Copper Jewelry Alloy.pdf
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Material Notes:
General purpose, medium hard. Can be cast. Copper, cobalt, gold, iridium, palladium and ruthenium alloy easily with platinum. The differences between the alloys reflect the hardening of the alloying element itself.
Physical Properties Metric English Comments
Density 20.0 g/cc
0.723 lb/in³
Mechanical Properties Metric English Comments
Hardness, Vickers 108
108
As Cast
125
125
Annealed
Elongation at Break 29 %
29 %
Annealed
Thermal Properties Metric English Comments
Melting Point 1725 - 1745 °C
3137 - 3173 °F
Solidus 1725 °C
3137 °F
Liquidus 1745 °C
3173 °F
Component Elements Properties Metric English Comments
Copper, Cu 5.0 %
5.0 %
Platinum, Pt 95 %
95 %
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