The condition and physical properties of pressure vessel steel plate ASTM A516 grade 70 have a direct influence on A516 grade 70 machinability. The various conditions and characteristics described as "condition of pressure vessel steel plate ASTM A516 grade 70," individually and in combinations, directly influence and determine A516 grade 70 machinability.
Condition of pressure vessel steel plate ASTM A516 grade 70:
The following eight factors determine the condition of the pressure vessel steel plate ASTM A516 grade 70: microstructure, grain size, heat treatment, chemical composition, fabrication, hardness, yield strength and tensile strength.
Heat treatment of pressure vessel steel plate ASTM A516 grade 70: to provide desired properties in pressure vessel steel plate ASTM A516 grade 70,A516 grade 70 steels are sometimes put through a series of heating and cooling operations when in the solid state. Pressure vessel steel plate ASTM A516 grade 70 may be treated to reduce brittleness, remove stress, to obtain ductility or toughness, to increase strength, to obtain a definite microstructure, to change hardness or to make other changes that affect A516 grade 70 machinability.
Chemical composition of pressure vessel steel plate ASTM A516 grade 70: chemical composition of pressure vessel steel plate ASTM A516 grade 70 is a major factor in determining A516 grade 70 machinability. The effects of composition though, are not always clear, because the elements that make up the A516 grade 70 steel, work both singly and collectively. Certain generalizations about chemical composition of pressure vessel steel plate ASTM A516 grade 70 in relation to A516 grade 70 machinability can be made, but nonferrous alloys are too numerous and varied to permit such generalizations.
