The mass-abundance of the nine most abundant elements in the Earth's crust (see main article above) is approximately: oxygen 46%, silicon 28%, aluminum 8.2%, iron 5.6%, calcium 4.2%, sodium 2.5%, magnesium 2.4%, potassium, 2.0%, and titanium 0.61%.he mass-abundance of the nine most abundant elements in the Earth's crust (see main article above) is approximately: oxygen 46%, silicon 28%, aluminum 8.2%, iron 5.6%, calcium 4.2%, sodium 2.5%, magnesium 2.4%, potassium, 2.0%, and titanium 0.61%.
Choosing Disc Weight. Disc golf discs come in a variety of different weights. Most discs weigh between 165 and 175 grams. Some discs also come in special plastic blends designed to weigh less. The Professional Disc Golf Association regulates how heavy a disc can be based on the discs diameter.
The product portfolio currently includes 2 types of carbon-ceramic discs: â¢ Carbon Ceramic Brakes â CCB. Produced in âMeitingen plant. CCB is a floating disc made up by a core of ceramic material, reinforced with carbon fiber and covered by an additional ceramic friction layer on both breaking surfaces.Customer Applications: Volkswagen, Porsche, Audi, Bentley, Lamborghini, Bugatti, AMG.CM disc, like CCB, is a floating disc made up by a core of ceramic material, reinforced with carbon fiber. In comparison to CCB, CCM disc braking surfaces are not covered by an additional ceramic friction layer.