【Daily Question】Utilities - Mechanical & Electrical - 20191118
Thread Content
The strength grades of alloy structural steel are classified according to ( ). A. Yield strength B. Tensile strength C. Compressive strength D. Flexural strength 【Answer】A 【Explanation】This question is relatively simple; it tests the criteria used to classify the strength grades of alloy structural steel. Yield strength is the minimum stress value at which a material begins to undergo significant plastic deformation.
A. Alloy structural steel is classified according to its yield strength, with strength grades such as Q345, Q390, Q420, Q460, Q500, Q550, and Q620.