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Preparation of Test Specimens
Unless otherwise specified, tests shall be carried out on specimens of sleeving in the as received
condition.
Dimensions
The test method shall be as specified in ASTM D876.
Three specimens shall be measured for minor inside diameter, major outside diameter, pitch and
wall thickness.
Breaking Load and Ultimate Elongation
The test method shall be as specified in ASTM D638.
For sizes 7/16 and smaller, three specimens of whole sleeving 150 mm in length shall be tested.
For sizes larger than 7/16, three strip specimens 150 mm long and 5 mm wide shall be cut and
tested. The specimens shall be tested using an initial jaw separation of 50 mm and a rate of jaw
separation of 50 mm per minute. Mean values for ultimate elongation as established from jaw
separation and the mean load to break shall be recorded.
Specific Gravity
The test method shall be as specified in Method A of ISO 1183.
Crush Resistance
Three specimens of sleeving of length as specified in Table 2 shall be crushed transversely
between parallel plates of diameter 50 mm minimum in a suitable tensile testing machine at a
rate of 5 mm per minute. The Crush Resistance shall be recorded as the mean force required to
reduce the outside diameter of the sleeving by 25%.
Compressive Flexibility
Three specimens of sleeving 300 mm long shall be compressed longitudinally in a suitable
tensile testing machine at a rate of 5 mm per minute. The sleeving shall slide freely over a
supporting mandrel of diameter 90 2% of the sleeving inside diameter. The Compressive
Flexibility shall be recorded as the mean value of the force required to compress the sleeving by
25%.
Flexibility
Three specimens of sleeving 300 mm long shall be secured to a flat horizontal surface such that
each specimen extends 150 mm beyond a 90° edge. The free end of each specimen shall be
loaded as specified in Table 2 and the vertical displacement shall be measured. The flexibility
shall be recorded as the mean value of displacement.