標準號：SAE J 422-1983
中文標準名稱：顯微測定鋼中的雜質
英文標準名稱：Microscopic Determination of Inclusions in Steels
標準類型：H26
發布日期：1983/12/1 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：H26
國際標準分類號：77.040.20
引用標準：ASTM E 45-1960
適用范圍：This recommended microscopic practice for evaluating the inclusion content in steel has been developed as a practical method of quantitatively determining the degree of cleanliness of steel. This method has been established as a reasonable control for steel mill operations and acceptance for production manufacturing. It has been widely accepted for carbon and alloy steel bars, billets, and slabs. Exceptions are resulfurized grades which are outside the limits of these photomicrographs and the high carbon bearing quality steels which are generally classified using ASTM E 45- 60T, Method A, Jernkontoret charts.