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Polyolefin Shrinkable U-bolt

Polyolefin
Shrinkable
U-bolt

Sr. No Test Description Standard Used Acceptance Criteria Recorded Value
1 Tensile Strength ASTM D638 11N/mm2 (Mpa)
(Min)
11N/mm2 (Mpa)
(Min)
2 Ultimate Elongation ASTM D638 350%
(Min)
359%
(Min)
3 Longitudinal Change ASTM D2671 -10%
(Max)
5%
(Max)
4 Hardness ASTM D2240 45 ±10 Shore D 41 Shore D
5 Water Absorption ASTM D570 0.5%
(Max)
0.11%
(Max)
6 Split Test Direct flame

Internal method

40 Sec. on 85%
Mandril Diameter

No Split-Pass
Oven
UL224 30 Min. on Mandril No Split-Pass
7 Accelerated Ageing ASTM D2671 1200 C for 500 hrs 1200 C for 500 hrs
a Tensile Strength ASTM D638 11N/mm2 (Mpa)
(Min)
11.61N/mm2 (Mpa)
(Min)
b Ultimate Elongation ASTM D638 300%
(Min)
310%
(Min)
8 Low Temperature Flexibility
(-40oC for 4 hrs)
ASTM D2671 No cracking No cracking
9 Heat Shock
(250 o C for 30 min.)
ESI 09-11 No cracking or flowing No cracking or flowing
10 Shrink Temperature IEC216 125 oC 125 oC
11 Continuous Temperature Limit IEC216 -40to +110 oC -40to +110 oC
12 Dielectric Strength ASTM D149 12 KV/mm
(Min)
12 KV/mm
(Min)
13 Volume Resistivity ASTM D257 1 Xl 0 14 Ohm.cm
(Min)
3.2 Xl 0 14 Ohm.cm
(Min)
14 Dielectric Constant ASTM D150 5
(Max)
4
(Max)