Creep testing is a destructive materials testing used to determine the plastic deformation of materials over an extended period of time while subjected to constant stress at a constant temperature. Creep testing is very important for materials required for certain operating temperatures under load, because large strain occurs with the passage of time, and the strain rate is very sensitive to temperature.

Stress rupture testing is used to measure the complete failure time of a material held at a specific load level and temperature.

STEMart provides various stress rupture and creep testing to evaluate the performance of materials with high temperature service applications, such as engines, ovens, and boilers. https://www.ste-mart.com/stress-rupture-and-creep-test.htm