Commercial Fine Gold, Cast
Categories: Metal; Nonferrous Metal; Precious Metal; Gold Alloy; Pure Element
Material Notes: Usual purity is 99.95-99.98%. Called proof gold if over 99.99% pure.
Key Words: Gold, Au
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Physical PropertiesMetricEnglishComments
Density 19.32 g/cc0.6980 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Hardness, Brinell 3333
Tensile Strength, Ultimate 125 MPa18100 psi
Elongation at Break 30 %30 %
Modulus of Elasticity 74.5 GPa10800 ksi
Poissons Ratio 0.420.42
Fatigue Strength 31.7 MPa
@# of Cycles 1.00e+7 		4600 psi
@# of Cycles 1.00e+7 		reverse bend
Shear Modulus 26.2 GPa3800 ksiCalculated
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.00000235 ohm-cm0.00000235 ohm-cm
 
Thermal PropertiesMetricEnglishComments
Heat of Fusion 66.2 J/g28.5 BTU/lb
CTE, linear  14.2 µm/m-°C
@Temperature 20.0 °C		7.89 µin/in-°F
@Temperature 68.0 °F
 14.6 µm/m-°C
@Temperature 250 °C		8.11 µin/in-°F
@Temperature 482 °F
 15.2 µm/m-°C
@Temperature 500 °C		8.44 µin/in-°F
@Temperature 932 °F
 16.7 µm/m-°C
@Temperature 950 °C		9.28 µin/in-°F
@Temperature 1740 °F
Specific Heat Capacity 0.130 J/g-°C0.0311 BTU/lb-°F
Thermal Conductivity 300 W/m-K
@Temperature 0.000 °C		2080 BTU-in/hr-ft²-°F
@Temperature 32.0 °F
Melting Point 1064 °C1947 °F
 
Optical PropertiesMetricEnglishComments
Emissivity (0-1) 0.040
@Temperature 100 °C		0.040
@Temperature 212 °F		total spectrum
Reflection Coefficient, Visible (0-1) 0.850.85600 nm
 
Processing PropertiesMetricEnglishComments
Casting Temperature 1095 - 1300 °C2003 - 2370 °F
 
Component Elements PropertiesMetricEnglishComments
Gold, Au >= 99.95 %>= 99.95 %

References for this datasheet.

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