Characteristics of materials Typical characteristics of various insulation and jacket materials for cables Insulation compounds Thermoplastics Abbreviations 1) PVC PE PBT-FR CENELEC type TI1 Thermical characteristics Thermal resistance 20 000 h °C 70 70 110 24 h °C 100 100 160 Short circuit °C 160 100 160 Resistance to cold, moved °C −5 −55 −40 Mechanical characteristics Tensile strenght N/mm2 ≥ 12.5 ≥ 10 ≥ 25 Elongation at break % ≥ 125 ≥ 300 ≥ 200 Abrasion resistance satisf. good good Flexibilty (2) satisf. poor poor Electrial characteristics Volume resistivity at 20 °C Ωcm 1014 1016 1015 TPE-E ETFE FEP 110 135 180 160 220 240 160 250 250 −40 −55 −55 ≥ 30 ≥ 30 ≥ 10 ≥ 200 ≥ 150 ≥ 200 very good very good satisf. poor poor poor 1015 1016 1018 PTFE 250 300 300 −70 ≥ 20 ≥ 200 satisf. poor 1018 Crosslinked materials EPR PE-X RX 125 RX 155S RX 155 PVDF-X SIR EI6 EI2 90 90 120 130 135 135 180 180 180 200 220 220 220 260 250 250 250 250 250 300 350 −40 −55 −40 −55 −55 −55 −55 ≥ 5.0 ≥ 12.5 ≥ 12.5 ≥ 200 ≥ 200 ≥ 200 satisf. very good good very good poor satisf. ≥ 12.5 ≥ 15 ≥ 200 ≥ 300 very good good poor satisf. ≥ 28 ≥ 5.0 ≥ 200 ≥ 150 very good poor poor very good 1015 1016 1014 1016 1016 1014 1015 Dielectric constant at 1 kHz 5.0 2.3 3.7 3.8 2.6 2.2 2.0 3.0 2.4 4.2 2.6 2.8 5.7 3.0 Fire characteristics Flame retardant Halogen free Corrosive combustion gases Smoke generation Resistance to Solvents 3) Oils and fuels 3) Acids and alkaline solutions 3) Water/hydrolysis 3) Weather/UV radiation yes no yes no yes yes yes no no yes yes yes yes ja no yes yes yes no no no yes yes yes no no no ja yes no no no yes yes yes no no no yes yes yes no strong average average average low low low average average low strong strong low average satisf. satisf. good good good satisf. good satisf. good very good satisf. very good satisf. poor good good good satisf. satisf. good very good very good very good satisf. satisf. satisf. very good very good very good poor satisf. satisf. very good very good very good very good very good good very good very good very good good very good good very good very good very good good satisf. good good satisf. very good satisf. good satisf. very good satisf. good good very good satisf. very good very good very good very good good good very good very good 1) RX = RADOX®, for other abbreviations see following page «Material designations» 2) Depends greatly on cable construction 3) Influenced by type, time and medium temperature Important: As the characteristics of compounds may vary widely according to their specific formulation, the values stated in the table must be understood as approximate values referring to typical representatives of their material class. The data is based on laboratory investigations and practical experience. It is stated to the best of our knowledge, but without guarantee. We will gladly advise you in individual cases. 72 HUBER+SUHNER Wires and cables
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