ASTM D3574 is a test method used for testing soft polyurethane foam used in car seats, mattresses, pillows and other foam products. Samples come in a variety of forms including slab, bonded, and molded flexible cellular urethane foams. ASTM D3574 contains several test procedures to determine the compression, deflection, tear and tensile characteristics of flexible cellular materials (urethane foams and polyurethane foams).
Before conducting ASTM D3574, it is important to read the entire specification. Standards can be obtained from appropriate standard authorities.