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Johnson Matthey GW Platinum w/ 5% Copper Jewelry Alloy
Categories:
Metal
;
Nonferrous Metal
;
Precious Metal
;
Platinum Alloy
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.
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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 %
Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's
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Users viewing this material also viewed the following:
Johnson Matthey SW 950 Platinum w/ 5% Iridium Jewelry Alloy
Johnson Matthey HC Platinum w/ 5% Cobalt Jewelry Alloy
Johnson Matthey HS Platinum Jewelry Alloy
Johnson Matthey SC 950 Platinum w/ 5% Palladium Jewelry Alloy
Johnson Matthey FP Platinum w/ 3% Copper Jewelry Alloy
NJMMJ62 / 97754
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