By David Edwards – UL Program Manager

Designers have many variables to consider during the development phase of a new product.

One critical variable is the materials and components that will be included in the product design and how they will perform over the intended design life, while exposed to various harsh operating environments or applications.

To help support designers and manufacturer’s material decisions, UL’s Performance Testing lab in Allentown, PA, U.S.A, has expanded its performance testing capabilities to include Thermal Shock Testing.

Thermal Shock Testing is required for products, components and materials that will undergo sudden changes in temperature throughout their life cycle. Thermal shock testing involves a change of temperature over a very short timeframe and then continuing that change for many predetermined cycles. These temperatures can range from extreme heat (200 C) to extreme cold (-70 C). MIL-STD-810 is a commonly referenced standard for temperature shock along with many other industry standards.

Various products from different industries experience severe temperature changes when in-use. For example, components attached to an automobile’s engine on a cold winter day can experience many cycles of thermal shock over time. Yet again, products that are stored in a hot warehouse might experience thermal shock when transferred to a cold truck for transportation. Early recognition of the proper materials helps boost the performance and reliability of the product.

For more information, call us at (610) 774-1300, or email