1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Revisions 2003 04 30 Revised Para 3.0 inserted; Para 3.4, 3.5 EPDM cured 15 min at 163 C. 3.3.1 Conductor Insulation (EPDM) Aged 70 h As recd at 177 +/- 2 C Tensile Strength, psi 900 (6.21) 850 (5.86) (MPa), min Elong
2、ation, % min 250 95 Hardness, Durometer “A“ 70 85 90 max Hardness Change, max - +7* Dielectric Strength, 550 (21.7) 550 (21.7) V/mil (kV/mm), min 3.3.2 Outer Jacket (Ethylene Copolymer) Aged 70 h As recd at 190 +/- 2 C Tensile Strength, psi 950 (6.54) 900 (6.20) (MPa), min Elongation, % min 450 200 Hardness, Durometer “A“ 65 80 90 max Hardness Change, max - +15* Dielectric Strength, 450 (17.7) 450 (17.7) V/mil (kV/mm), min *The change shall not exceed the hardness requirement.
