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Valves in Alloy 31

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Alloy 31 valves and their use.

Alloy 31 valves are a iron-nickel-chrome-molybdenum steel alloyed with nitrogen. Alloy 31 is resistant to corrosion and erosion in phosphoric acid and is often used un bleaching plants and the pulp and paper industry.

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Alloy 31 material specification and equivalents

ASTM specification B622
European (DIN) Werkstoff number 1.4562
Unified Numbering System (UNS) N08031
Type X1NiCrMoCu32-38-7
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