NICKEL
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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.
- 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
825 Pipe, 825 Plate, 825 Sheet, 825 Weld Wire
- Valves
- Phosphoric acid production
- Chemical process vessels
- Catalytic cracking units
ASME SB: 366, -63, 423, 424, 425, 705
ASTM B: 163, 366, 423, 425, 705, BOILER & PRESSURE VESSEL CODE SECTION 1
ISO: 15156-3
NACE: MR0175
NR./EN: 2.4858
SECTION III CLASS 3 SECTION VIII TO 1000°F
UNS: N08825, N08825 W.
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