Quality specifications for cathode carbon blocks of a foreign company
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Properties: 3G5G10G3GE5BDN5BGNBNBN2True density, g/cm³: 1.96, 2.07, 1.97, 1.95, 2.16, 2.21, 2.23
Volume density, g/cm³: 1.61, 1.63, 1.65, 1.59, 1.58, 1.65, 1.62, 1.57
Open porosity, %: 15, 15, 16, 15, 15, 19, 20, 24
Compressive strength, N/mm²: 34/32, 37/35, 36/34, 29/27, 31/24, 27/20, 31/29, 24/21
Young’s modulus, kN/mm²: 13, 12, 11, 11, 11, 19, 7
Torsional strength, N/mm²: 33/45, 25/33, 19/23, 30/41, 25/37, 13/20, 38, 30, 43, 8, 30, 5
Electrical resistivity, μΩ·m: 33/45, 25/33, 19/23, 30/41, 25/37, 13/20, 11/13, 11/14
Coefficient of thermal expansion (20–200°C), 0 K: 5, t7, z, x2, t. Y2?4, S, μm/(K·m): 1.8/2.9, 2.1/3.0, 2.4/3.2, 2.3/3.1, 2.3/3.0, 2.2/2.7, 3.8/4.0, 2.3/2.4
Thermal conductivity (30°C), W/(m·K): 10/7, 15/11, 29/23, 16/11, 17/11, 45/33, 115/10, 41, 100
Ash content, %: 43, 1.54, 2.5, 0.3, 0.31