A quality designation of carbon steel, which typically contains less than 0.025 percent carbon. This grade of steel is more ductile than commercial quality and is suitable for producing deep-drawn parts or any other parts needing severe deformation. It is not as formable as the extra-deep-drawing steel, but it is less costly. Also known as DDS or DDQ. See also commercial steel, deep-drawing steel, and extra-deep-drawing steel.
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