The oxygen bomb test is an accelerated aging test in which wire is exposed to heat and pressurized pure oxygen to evaluate changes in tensile strength and elongation.
The oxygen bomb test is an accelerated aging procedure used to evaluate how a wire's insulation will hold up over time. The wire is placed in a sealed chamber, or bomb, at an elevated temperature of around 70 degrees C, under roughly 300 psi of pure oxygen gas, for a period of about 48 to 96 hours. The intense oxygen and heat speed up the aging process that would otherwise take much longer.
After exposure, the wire's tensile strength and elongation are measured to see how much the material has degraded. Because oxygen accelerates the breakdown of many insulating compounds, the test reveals how resistant a material is to oxidative aging, providing a way to predict long-term durability from a short test.
In commercial and industrial wire, accelerated tests like the oxygen bomb test support quality evaluation and material selection. Understanding how a material withstands oxidative aging helps in choosing insulation suited to a long, dependable service life.
Because oxygen accelerates the breakdown of many insulating compounds, the bomb test compresses years of aging into a short, controlled exposure, revealing how resistant a material is to oxidative degradation and helping predict the service life of the finished wire.
At Windy City Wire, an awareness of testing methods such as the oxygen bomb test reflects a focus on durable, well-evaluated materials. Recognizing how accelerated aging predicts longevity helps illustrate the basis for confidence in the long-term performance of low-voltage cable.