Insulated silicon carbide ceramic plunger

The Mohs hardness of silicon nitride ceramics is usually above 9, which makes it excellent in wear resistance and scratch resistance ‌, enough to keep its physical and chemical properties stable at extreme high temperatures, melting point of more than 2700℃, can still maintain good mechanical strength and dimensional stability at high temperatures. MATERIAL : Si3N4 DENSITY  : 2.8 COLOR  : Black / Blue / White HRDNESS(Mohs scale) : 9 MAX WORKING TEMPERATURE : 1650