Sections 87-89 of ASTM D2671 are part of the corrosion testing group (Sections 85-91) for heat-shrinkable tubing. These sections cover corrosion assessment and copper stability testing.
The corrosion tests evaluate whether heat-shrinkable tubing materials cause degradation of copper conductors when in contact at elevated temperatures. Specimens are typically placed in contact with polished copper coupons and aged under controlled temperature and humidity.
After conditioning, the copper surfaces are examined for evidence of corrosion or discoloration. These tests are critical for ensuring that heat-shrinkable insulation does not accelerate copper conductor degradation in electrical wiring systems.