825

Incoloy 825 is a nickel-base alloy generally similar to Alloy 20 in aqueous corrosion. It has useful resistance to boiling sulfuric acid up to 40% concentration, to 60% concentration at 176°F and in all concentrations to 150°F. Alloy 825 is stabilized annealed at the mill to resist intergranular corrosion as-welded. If exposed for long times to the sensitive temperature range 1200-1400°F the alloy may exhibit severe intergranular corrosion in certain very aggressive environments.

Inventory

825 Pipe, 825 Plate, 825 Sheet, 825 Weld Wire

Common Trade Names

Alloy 825, Incoloy 825, Inconel 825

Features

  • Excellent resistance to sulfuric and phosphoric acids
  • Resists intergranular corrosion in the as-welded condition
  • Practical immunity to chloride stress corrosion cracking (SCC)
  • Resists polythionic acid SCC

Applications

  • Valves
  • Phosphoric acid production
  • Chemical process vessels
  • Catalytic cracking units