Q460C, Q460D, Q460E low alloy steel properties

Q460C, Q460D, Q460E grade introduction
Q represents the capitalization of the first letter of the Chinese Pinyin of "qu" which is the yield strength of steel; 460 represents 460 MPa. Q460 means that the plastic deformation of steel will only occur when the strength of the steel reaches 460 MPa, that is, when the external force is released, the steel can only maintain the shape of the force but cannot restore its original shape. This strength is greater than that of ordinary steel. C—Quality level is C level (levels are divided into C, D, E).

When the buyer needs the Q460 steel plate to have thickness direction performance, add the symbol representing the thickness direction (Z direction) performance level after the above-mentioned grade, for example: Q460CZ15.

Q460C, Q460D, Q460E low alloy steel products have the advantages of stable quality, B-directional performance and excellent welding performance.
Increasing temper brittleness Like carbon steel, alloy steel also produces temper brittleness, and it is more obvious. This is an adverse effect of alloying elements. The second type of temper brittleness (high temperature temper brittleness) that occurs between 450°C and 600°C is mainly related to the serious segregation of certain impurity elements and alloy elements themselves on the grain boundaries of the original austenite. In alloy steels with elements such as Cr and Ni. This is a reversible temper brittleness, which can be prevented by rapid cooling (usually oil cooling) after tempering. Adding appropriate Mo or W (0.5% Mo, 1% W) to Q460 steel can also basically eliminate this kind of brittleness.