MATERIALS
L3 Steatite - Good electrical properties, temperature capabilities to 1800° F, and high strength. A good choice for applications requiring good electrical insulation but not involving high frequency.
L5 Steatite - Good electrical properties at normal and radio frequencies, high strength, and ability to withstand temperatures to 1800° F. Applications include coil forms and other insulators in radio frequency applications,and a wide range of electrical insulators where good electrical and mechanical properties are required.
C10 Steatite - Our high thermal expansion body developed to facilitate ceramic glass to metal sealing while retaining the good electrical and mechanical characteristics of our other steatite bodies.
CORDIERITE
Porous, with a low coefficient of thermal expansion and the ability to withstand thermal shock and temperatures to 2200° F. this is an excellent choice for applications such as element hangers and spacers in ovens and kilns,part holders for heat processing in relatively clean and dry environment, and electrical insulators applications such as gas ignition, again in relatively clean and dry environments.
Vitrified, with the most of the properties of the porous cordierite, but without the porosity. These characteristics make this material very useful where absorption would be a problem, such as oil ignition. It is easier to keep clean than the porous cordierite.
ALUMINA
We manufacture alumina components in four grades of purity: 92%, 95%, 96%, and 99.5% to meet a wide range of needs. All have good electrical and mechanical characteristics, are able to withstand elevated temperatures exceeding 2500° F, and have good wear properties. Applications include thread and wire guides,spark plugs and ignition devices welding and sand blast nozzles, and electrical insulators in furnaces and ovens,including high vacuum applications.
National Ceramic Co.
P.O. Box 280-T
Trenton, NJ 08602
Tel: 609-394-5373
Fax: 609-989-4847