Injection Molded Case Certificates and Testing Explanations
DEF STAN 81-41
Vibration Test K DEF STAN 81-41: At 25ºC, 2 hours of vibration at amplitude of ± 0.23” (± 6 mm) peak (0.46” DA) from 5 to 9 Hz and ± 2 g peak from 9 to 350 Hz and a sweep rate of 0.75±0.25 octave.
Low Temperature Test G DEF STAN 81-41: Decrease temperature to -20±2ºC for 16±5 hours and afterwards return to 20±10ºC.
Dry Heat Test C DEF STAN 81-41: Increase temperature from 25±10ºC to 55±2ºC, humidity not exceeding 75%, and maintain conditions for 48±1 hours. Return temperature to 20±10ºC.
Impact Vertical Test E DEF STAN 81-41: At 25±10ºC, the case is dropped from a height of 1000±5 mm making sure that the impact is received in all angles of the case.
Ingress Protection (IP Codes)
Pelican Cases are IP67 certified. It refers to protection against solid particles (first digit) and liquids (second digit). Therefore 6 means dust-tight (6 being the maximum rating) and 7 means protection against immersion (8 being the maximum rating, indefinite immersion).
This is a US military approval for cases under the following conditions: stacking, drop, immersion and humidity.
Weight: Cases loaded from 9 to 29 Kg. Establish minimum weight required to resist in accordance with Weight and Drop table.
Leak: Kept one hour underwater in a submersion tank with less Temperature than when it was sealed outside of the tank.
Reusability: Repeatedly opened and closed for five times after leak. Visually inspect the case for degradation.
Handling: Minimum of two minutes suspension above the floor with weight by one handle or lifting ring. Visual inspection of damage, failure or deformation.
Impact: Case placed in a chamber with Temperature at +60ºC, removed it from chamber and loaded it with weight and submitted to incline impacts on each surface. Perform same procedure on the chamber again with decrease Temperature to –20º.
Vibration: Cases are placed into a vibration machine with weight and tested in all positions so that it may be shipped up to a total of three hours.
Drop: Same procedure as Impact but is dropped with weight from different heights and in different orientations. Drops ensure that impact is received on all angles of the case.
ATA (Air Transportation Association) – Specification 300
This certificate is specific for packaging in the Airline Industry. It tests the cases as a reusable container for a minimum of 100 round trips. It tests measure impact and drop resistance.
Impact Test for Category 1: Impact of a metal bar of 3.2 cm diameter with a hemispherical end, weighing 6 Kg and being dropped with its longitudinal axis vertical, onto the weakest point of any exterior surface. The drop of the bar was 0,5 meters high.
Drop Test for Category 1: The case is dropped from 76 cm onto each corner, face and edge with the results of no damage. Secondary tests were done with the inclusion of a secured weight (from 18 to 23 Kg).