SAE J 422

SAE J 422

January 2018
Standard Current

Microscopic Determination of Inclusions in Steels

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.The technical report covers technology, products, or processes which are mature and not likely to change in the foreseeable future.

Main informations

Collections

SAE american standards

Publication date

January 2018

Number of pages

7 p.

Reference

SAE J 422

Classification index

J422_201801

International kinship

ASTME45-60T
Sumary
Microscopic Determination of Inclusions in Steels

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. The technical report covers technology, products, or processes which are mature and not likely to change in the foreseeable future.
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