Section 6.3 of SAE J1128 defines mechanical property tests including tensile strength and elongation testing before and after aging for primary wire insulation.
Insulation specimens are die-cut to dumbbell shape and tested per standard methods. Both initial properties and property retention after thermal aging must meet specification requirements.
Section 6.3 of SAE J1127 defines mechanical property tests including tensile strength and elongation testing, both before and after aging. Insulation specimens are tested per ASTM D412 for initial properties and after air oven aging to verify retention of mechanical properties.
These tests ensure that the insulation material maintains adequate mechanical performance throughout the cable’s service life in automotive battery applications where exposure to heat, vibration, and chemicals is expected.