Materials & Properties

Insulation Material

Dielectricstrength(kV/mm) Electricalresistivity(Ωcm)
Ceramics Advanced ceramics Alumina >10 >1014
Zirconia >10 >1012
Silicon nitride >14 >1014
Aluminium nitride >15 >1014
Silicon carbide >106
Cordierite 7 1013
Mullite >10 1014
Steatite 18 1014
Calcium oxide
Magnesium oxide >1014
Sialon >15 >1015
Machinableceramics Macerite HSP >10 5×1015
Photoveel II 35 2.2×1015
Photoveel II-S 30 1014
M-soft 40 1012
BN HC 25 1015
BN N-1 25 1015
BN NB-1000 22 1015
BA 21 1014
SBN 27 1014
Glass Universal glass
Toughened glass
Tempax, Pyrex 1015
Neoceram >1013
Quartz >10 >1014
Baycol 1017
Sapphire glass >10 >1014
Brick Ordinary brick
General purpose furnace material(ceiling use)
General purpose furnace material(insulation brick)
Cement Universal cement
Fireproof cement
Dielectricstrength(kV/mm) Electricalresistivity(Ωcm)
Metals High melting point metals Tungsten 5.5×10-6
Molybdenum 5.7×10-6
Tantalum 12.4×10-6
Niobium
Heat-resistant steel SUS310S 90×10-6
SUH445 60×10-6
Inconel 600 103×10-6
Common metals SUS316 74×10-6
SUS304 71×10-6
Iron 19.5×10-6
Aluminium 2.7×10-6
Copper 1.7×10-6
Dielectricstrength(kV/mm) Electricalresistivity(Ωcm)
Plastics Engineering plastics Polyimide (PI) 23 >1014
Poly Benz Imidazol (PBI) 23 2×1015
Polymide-imide (PAI) 23 2×1015
Poly Ether Imide (PEI) 24 1017
Polyacetal (POM) 20 1×1014
Poly Phenylene Sulfide (PPS) 15 1.6×1016
Poly Ether Ether Ketone (PEEK) 19 1016
Poly Tetra Fluoro Ethylene (PTFE) 19 <1018
Polymide 6 (PA6) 31 1014
Ultra-high-molecular-weight polyethylene (UHMWPE) >1013
Common plastics Polyethylene (PE) 40 ~ 50 6×1018
Polypropylene (PP) 31 >1016
Vinyl chloride resin (VC) 37.5 >1016
Polystyrene (PS) 20 ~ 28
Polyethylene-telephthalate (PET) 22 >1016
Acrylonitrile butadiene (ABS) 14 ~ 20 1 ~ 4.8×1014

※Presented data is only for reference value of handing materials.