Description
DESCRIPTION Spectroscopically pure carbon Grade 1 (graphite) planchets with total impurities equal to or less than 2ppm with each single element 1ppm or less. Trace elements can be Si, Al, Fe, Mg, Ca or B. The carbon discs have a fine ground finish on one side; 0.80µm (32µ inches). All carbon planchets are 1.6mm (1/16″) thick. Sizes from 10 to 32mm diameter to fit all styles of SEM pin and cylinder mounts varying from 10 to 32mm diameter. Properties of Grade 1 Carbon Density
1.58 – 1.63 g/cm³ Hardness
30 – 35 Shore Electrical Resistivity
58 Р71 멵m Flexural Strength
24 – 31 MPa Tensile Strength
22 MPa Compressive Strength
48 MPa Thermal Expansion
1.9 x 10-6/°C Porosity
28 – 30% Purity
Impurities < 2ppm 16501 -Carbon Planchets, 9.5mm, for JEOL 9.5mm mounts 16504 – Carbon Planchets, 10mm, for JEOL 10mm mounts 16502 -Carbon Planchets, 12.2mm, for JEOL 12.2mm mounts 16503 -Carbon Planchets, 12.5mm, for JEOL 12.5mm mounts 16500 – Carbon Planchets, 12.7mm, for pin stubs 16505 – Carbon Planchets, 15mm, for Hitachi and ISI/ABT/Topcon mounts 16508 – Carbon Planchets, 18mm, for 18mm pin stubs 16510 – Carbon Planchets, 25.4mm, for large pin stubs, JEOL metallographic mounts and Hitachi 25mm mounts 16512 – Carbon Planchets, 32mm, for large pin stubs, Hitachi and JEOL mounts
