ASTM A217 / A217M

This specification covers martensitic stainless steel and alloy steel castings for valves, flanges, fittings, and other pressure-containing parts intended primarily for high-temperature and corrosive service. One grade of martensitic stainless steel and nine grades of ferritic alloy steel are covered. Selection will depend on design and service conditions, mechanical properties, and the high-temperature and corrosion-resistant characteristics

Chemical Properties

Grade	Carbon	Manganese	Phosphorus	Sulfur	Silicon	Nickel	Chromium	Molybdenum	Columbium	Nitrogen	Vanadium

Note A: Where ellipses (...) appear in this table, there is no requirement, and the element need not be analyzed for or reported.

Mechanical Properties

Grade	Thickness, in. [mm]	Minimum Preheat Temperature, °F [°C]