Phosphate Impregnation Applications

Graphite will oxidize in the atmosphere above 400°C. After phosphate immersion treatment, it can be raised to above 700°C before it begins to oxidize. This process is widely used in the steelmaking industry.


Phosphate impregnation-向尚碳精

Phosphate impregnation

Proerty values PK-3 HLM E+20 G-330 R-8340
Density g/cm3 1.72 1.74 1.81 1.79 1.72
Grain Size μm 2 0.8 11 12 15
Hardness HSD 78
-
65
56
80
Young's mouldus GPa - 10 11.5 9.8 10.5
Flexural Strength Mpa
14 18 52 39.2 45
Electrical Resistivity μΩm
8~9 8.5 12.4 13 12
Thermal expension x10-6K-1 - 2.6 5.3 4.8 2.9
Thermal conductivity
Wm-1K-1 - 150 104 104 90