Overview of materials for Gold Alloy

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Overview of materials for Gold Alloy
Categories:	Metal; Nonferrous Metal; Precious Metal; Gold Alloy
Material Notes:	This property data is a summary of similar materials in the MatWeb database for the category "Gold Alloy". Each property range of values reported is minimum and maximum values of appropriate MatWeb entries. The comments report the average value, and number of data points used to calculate the average. The values are not necessarily typical of any specific grade, especially less common values and those that can be most affected by additives or processing methods.
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Physical Properties	Original Value	Comments

Density	7.18 - 19.9 g/cc	Average value: 15.2 g/cc Grade Count:141

Mechanical Properties	Original Value	Comments
Hardness, Brinell	25.0 - 169	Average value: 88.2 Grade Count:6
Hardness, Knoop	131 - 2300	Average value: 694 Grade Count:4
Hardness, Rockwell A	40.0 - 53.0	Average value: 45.7 Grade Count:3
Hardness, Rockwell B	64.0 - 86.0	Average value: 74.3 Grade Count:3
Hardness, Rockwell 15T	61.0 - 91.0	Average value: 77.2 Grade Count:6
Hardness, Vickers	25.0 - 1060	Average value: 177 Grade Count:67
Tensile Strength, Ultimate	120 - 1900 MPa	Average value: 449 MPa Grade Count:83
Tensile Strength, Yield	80.0 - 907 MPa	Average value: 457 MPa Grade Count:56
Elongation at Break	1.20 - 56.5 %	Average value: 20.6 % Grade Count:84
Modulus of Elasticity	59.1 - 279 GPa	Average value: 104 GPa Grade Count:40
Compressive Yield Strength	128 - 758 MPa	Average value: 514 MPa Grade Count:4
Poissons Ratio	0.210 - 0.420	Average value: 0.378 Grade Count:6
Shear Modulus	26.2 - 28.1 GPa	Average value: 27.4 GPa Grade Count:4
Shear Strength	185 - 276 MPa	Average value: 227 MPa Grade Count:3

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.00000220 - 0.0000620 ohm-cm	Average value: 0.0000175 ohm-cm Grade Count:57

Thermal Properties	Original Value	Comments
CTE, linear	4.90 - 19.5 µm/m-°C	Average value: 15.1 µm/m-°C Grade Count:61
Specific Heat Capacity	0.128 - 0.150 J/g-°C	Average value: 0.133 J/g-°C Grade Count:7
Thermal Conductivity	21.0 - 301 W/m-K	Average value: 64.7 W/m-K Grade Count:33
Melting Point	280 - 1880 °C	Average value: 915 °C Grade Count:179
Solidus	280 - 1290 °C	Average value: 869 °C Grade Count:165
Liquidus	280 - 1450 °C	Average value: 927 °C Grade Count:165

Optical Properties	Original Value	Comments
Reflection Coefficient, Visible (0-1)	0.270 - 0.850	Average value: 0.695 Grade Count:4

Processing Properties	Original Value	Comments
Processing Temperature	315 - 1230 °C	Average value: 746 °C Grade Count:73
Casting Temperature	950 - 1430 °C	Average value: 1160 °C Grade Count:50

Component Elements Properties	Original Value	Comments
Cadmium, Cd	0.00100 %	Average value: 0.00100 % Grade Count:8
Carbon, C	0.00500 - 0.0100 %	Average value: 0.00714 % Grade Count:7
Cobalt, Co	0.0600 - 0.800 %	Average value: 0.520 % Grade Count:3
Copper, Cu	0.000 - 97.0 %	Average value: 21.1 % Grade Count:87
Germanium, Ge	12.0 %	Average value: 12.0 % Grade Count:5
Gold, Au	3.00 - 100 %	Average value: 69.2 % Grade Count:190
Indium, In	0.200 - 25.0 %	Average value: 4.73 % Grade Count:31
Iridium, Ir	0.100 - 0.300 %	Average value: 0.122 % Grade Count:27
Iron, Fe	0.200 - 1.00 %	Average value: 0.400 % Grade Count:4
Lead, Pb	0.00200 %	Average value: 0.00200 % Grade Count:8
Manganese, Mn	6.80 - 16.0 %	Average value: 10.2 % Grade Count:4
Nickel, Ni	1.15 - 36.5 %	Average value: 18.0 % Grade Count:40
Palladium, Pd	1.00 - 76.0 %	Average value: 12.7 % Grade Count:54
Phosphorus, P	0.00200 - 0.200 %	Average value: 0.0268 % Grade Count:8
Platinum, Pt	0.400 - 30.0 %	Average value: 9.15 % Grade Count:39
Rhenium, Re	0.100 %	Average value: 0.100 % Grade Count:10
Rhodium, Rh	0.500 - 0.700 %	Average value: 0.533 % Grade Count:6
Silicon, Si	2.00 - 3.20 %	Average value: 2.78 % Grade Count:3
Silver, Ag	0.500 - 59.2 %	Average value: 17.5 % Grade Count:89
Tin, Sn	0.100 - 22.0 %	Average value: 14.0 % Grade Count:12
Zinc, Zn	0.00100 - 14.5 %	Average value: 5.65 % Grade Count:55

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 terms of use regarding this information. Click here to go back to viewing the property data in MatWeb's normal format.

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