The NC-12 protection tube is a dense, sintered ceramic especially designed for use in many molten non-ferrous metals and corrosive chemicals. It is very strong, thermally shock resistant and dimensionally stable. Additionally NC-12 is vacuum-tight and has high electrical resistance. Mechanical strength is retained at extremely high temperatures (over 1,000 degrees Celsius in air). These features together with very low wear resistance, makes NC-12 an ideal thermocouple protection tube for applications such as molten aluminum, lead, tin, and zinc. Preheating is not necessary because NC-12 has a very low thermal expansion coefficient.
Our NC-12 Protection tubes are also recommended for use in oxidizing environments to 2,200 degrees Fahrenheit. Most acids, such as hydrochloric, nitric, sulphuric, and phosphoric, do not attack NC-12. This material is also resistant to hydrogen gas. It is not recommended for use with caustic solutions and hydrofluoric acid.
|Typical Test Results of NC-12 |
Resistance to Molten Metals
|Material||°F||°C||Holding Time in Hours||Remarks|
|No Attack |
|Part No.||Diameter 'D'||Length 'L'||NPT 'N'|