Environmental stress cracking is the formation of cracks in a material caused by relatively low tensile stress and environmental conditions. Environmental Stress-Cracking Resistance (ESCR) is the number of hours that 50% of the specimens tested exhibit stress cracks. -Stainless steel oil bath -Bending clamp -Holder press for cut of test sample according to standards -Sample press for producing controlled notch in the test samples -Sample transfer tools to move the samples from clamp to holders-Changeable blade