This specification covers M-grade hot-wrought merchant quality carbon steel bars produced to a chemical composition. Merchant quality bars are used for structural and similar miscellaneous bar applications involving moderate cold bending, moderate hot forming, punching, and welding as used in the production of noncritical parts. Moderate cold bending involves generous bend radius with the axis of the bend transverse to the direction of rolling. Heat analysis shall conform to the requirements as to chemical composition.

This specification covers M-grade hot-wrought merchant quality carbon steel bars produced to a chemical composition. Merchant quality bars are used for structural and similar miscellaneous bar applications involving moderate cold bending, moderate hot forming, punching, and welding as used in the production of noncritical parts. Moderate cold bending involves generous bend radius with the axis of the bend transverse to the direction of rolling. Heat analysis shall conform to the requirements as to chemical composition.