ISO 7778:2014规定了垂直于表面的厚度方向上规定的面积特性的全厚度减薄标准。它还规定了评估是否符合规定标准的试验条件。 ISO 7778:2014适用于具有规定最小屈服强度或验证强度的全镇静钢≤960兆帕，作为板材、宽平板或厚度为15毫米至400毫米的型材提供。

ISO 7778:2014 specifies the criteria for through-thickness reduction of area properties specified in the direction of thickness perpendicular to the surface. It also specifies the test conditions by which conformance to the specified criteria is evaluated. ISO 7778:2014 applies to fully killed steel with a specified minimum yield strength or proof strength ≤960 MPa and supplied as plates, wide flats, or sections of thickness from 15 mm to 400 mm.