The analysis of Type 304 is similar to that of Type 302, except that Type 304 is modified by lowered carbon content This provides good resistance to corrosion in welded construction where subsequent heat treatment is not practicable. Bars and Plates are available not only in the regular Type 302 and 304 analyses, but also in an extra low carbon analysis, known as Type 304L. The advantage of this analysis is that it precludes any harmful precipitation in the 800°-1500°F range, such as might otherwise occur in welding heavier sections.

UNS S30200. S30400, S30403

Physical Condition A

Stock Lengths 10' to 12' and 20' to 22'