Torque correcting round standard beam made of hard aluminum alloy material

The invention relates to a torque correcting round standard beam made of a hard aluminum alloy material. The torque correcting round standard beam comprises a round beam, a left scale pan and a right scale pan, and is characterized in that a cutter point serving as the center of the round beam is formed in a lower groove of the round beam; the left and right scale pans are suspended at two sides of the round beam by scale suspending lines which are tangent to the horizontal bus of the round beam; and the horizontal cutting position of the round beam is 5mm lower than the horizontal bus of the round beam. The round standard beam made of the hard aluminum alloy material solves the problem that a standard torque has an error caused by that the actual action length of the arm of force is changed due to deflection of the arm of force of the standard beam in the torque correcting device, has the advantages of simple structure, skillful design and high stability, and fills up a blank at home.