Black Stoneware Vacuumed Clay Chamotte 40% 0-1 Mm - African Stone (12,5Kg) (R21850)

Ideal for architectural and decorative objects.
It is not recommended to make very thin objects.
The slower you cook the African Stone, the better results you will get.
From 1100°C, the temperature should be increased slowly so that oxygen can pass through the porous surface.
If the temperature rises too quickly, deformations, bubbles and even bursts or cracks occur.
Creates effective colors from 1100°C to 1270°C (Follow the recommendations below to achieve a beautiful black in oxidative cooking).
Ideal Biscuit Baking Temperature: 980 - 1020°C
Maximum Cooking Temperature: 1150 - 1270°C
Packaging: 12,5 kg (27,56 lb)

Technicial Specifications
Drying shrinkage: 8%
Shrinkage at 1280°C: 4.5%
Porosity 1270°C: 4%
Expansion coefficient: 70 x 10-7
There are 3 types of African Stone product, the difference is due to the size of the chamotte.