This European Standard specifies a method for the determination of residual stresses in the areas adjacent to the slit edges of wrought copper and copper alloy strip, by measurement of the angle of the twist, longitudinal curvature and sideways curvature of test pieces cut from strip.
DS/EN 13147:2001 history
2001DS/EN 13147:2001 Copper and copper alloys - Determination of residual stresses in the border area of slit strip