This specification covers iron-chromium and iron-chromium-nickel alloy castings for general corrosion-resistant application. The grades covered by this specification represent types of alloy castings suitable for broad ranges of application@ which are intended for a wide variety of corrosion environments. Note 1??For alloy castings for severe corrosion-resistant service@ reference should be made to M 285M/M 285. For general heat-resistant alloy castings@ reference should be made to ASTM A 297/A 297M. For nickel alloy castings for corrosion-resistant service@ reference should be made to ASTM A 494/A 494M. The values stated either in SI units or inch-pound units are to be regarded separately as standard. Within the text@ the inch-pound units are shown in brackets. The values stated in each system are not exact equivalents; therefore@ each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification. SI units are applicable for material ordered to M 163M and inch-pound units are applicable for material ordered to M 163.
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