Part 31 of the 1971 ASTM Standards contains definition of terms, method of test, and recommended practices for corrosion of metals; effect of temperature on metals; bend test for ductility; compression of metals; fatigue, fraction, hardness, impact, stress- relaxation and tension testing; metallography; nondestructive testing including electromagnetic, liquid penetrant, magnetic particle, radiography and ultrasonic methods. Physical testing for elastic properties and linear thermal expansion. Radiation effects and recommended practices for statistical methods. A metric practice guide is included.