This publication is intended to provide a useful guide to world-wide material specifications for seawater systems. United States specifications (ASTM, ACI, CDA, MIL, FED, UNS*), where assigned, are given for selected cast and wrought alloys, together with the corresponding equivalent, or near equivalent, specifications of Germany (DIN), United Kingdom (BS), Japan ()IS), France (AFNOR), Italy (UNI), and Korea (KS). The following tables containing equivalent or near equivalent specifications are divided into two major categories: cast alloys and wrought alloys. Within these two categories, various irons, steels, stainless steels, and copper and nickel base alloys are considered, as appropriate. A listing of the specification writing organizations referred to in this guide is given in Table 1.
*A UNS number is not in itself a specification; it is a unified identification system of metals and alloys for which controlling limits have been established in specifications published elsewhere.