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Tensile Strength and Ultimate Elongation
The test method shall be as specified in ISO 37.
Five tubular specimens 125mm long shall be tested. Initial jaw separation shall be 50 mm and
rate of jaw separation shall be 100 ± 10mm per minute.
The test shall be carried out at a temperature of 23 ± 2°C
Secant Modulus
The test method shall be as specified in Method A of ASTM D882.
Five tubular specimens 150mm long shall be tested. Initial jaw separation shall be 100mm and
rate of jaw separation 10 ± 1mm per minute.
The test shall be carried out at a temperature of 23 ± 2°C.
The test method shall be as specified in Method A of ISO 1183.
The test method shall be as specified in ASTM D2671.
The specimens shall be conditioned in a fan assisted air circulating oven as specified in
Table 1.
The test method shall be as specified in ISO 188.
Five tensile test specimens prepared as in Clause 3.3 shall be conditioned in a fan assisted air
circulating oven as specified in Table 1. After conditioning the specimens shall be removed
from the oven, allowed to cool naturally to room temperature and tested for Ultimate Elongation
according to clause 3.3.
Low Temperature Flexibility
The test method shall be as specified in Procedure C of ASTM D2671.
Mandrel diameter shall be 15 x specimen thickness ± 10%. For tubular specimens the thickness
is the outside diameter.
The specimens and mandrel shall be conditioned as specified in Table 1.
Flammability
The test method shall be as specified in ASTM D876.
The test method shall be as specified in IEC 60243-1 (Short time test).