MatWeb, The Online Materials Database

Platinum, Pt, CP Grade, Annealed

Subcategory: Metal; Nonferrous Metal; Precious Metal; Pure Element

Component    Wt. % Pt 99.95

Material Notes:
CP Grade (Commercially Pure) is 99.95% pure.

Physical Properties	Original Value		Comments
Density	21.45 g/cc
Mechanical Properties
Hardness, Vickers	40
Tensile Strength, Ultimate	125 - 165 MPa
Elongation at Break	35 %		in 50 mm
Modulus of Elasticity	171 GPa		static in tension
Poisson's Ratio	0.39
Shear Modulus	62 GPa		Calculated value
Electrical Properties
Electrical Resistivity	1.06e-005 ohm-cm		Temperature Coefficient of resistivity is 0.0039/K.
Magnetic Susceptibility	1.1e-006		cgs/g
Thermal Properties
Heat of Fusion	113 J/g
CTE, linear 20°C	9.1 µm/m-°C
Specific Heat Capacity	0.134 J/g-°C
Thermal Conductivity	69.1 W/m-K
Melting Point	1769 °C
Optical Properties
Emissivity (0-1)	0.152		at 1000°C for total hemispherical
Emissivity (0-1)	0.3		650 nm
Reflection Coefficient, Visible (0-1)	0.7		bulk Pt; 589 nm

References are available for this material.