Description

Specifies a spectrophotometric method for the determination of the phosphorus content of iron and steel. The method is applicable to the determination of phosphorus contents between 0.005 percent and 2.0 percent, provided that the following elements are not present in amounts greater than that specified: niobium 1 percent, tantalum 1 percent, titanium 2 percent, tungsten 11 percent, zirconium 1 percent. Reconfirmed: 2016-12-16 First published as part of AS K1-1925. Second edition 1926. Revised and redesignated in part as AS K1.3-1951 and AS K1.4-1951. AS K1.3-1951 and AS K1.4-1951 revised, amalgamated and redesignated AS K1.18-1963. Revised and redesignated AS 1050.18-1984. Jointly revised and designated as Joint Standard AS/NZS 1050.18:1994.