Alloy 800

Steel name: Alloy 800
Diagram No.: 2964
Type of diagram: TTS
Chemical composition in weight %: 0.019% C, 0.49% Si, 1.21% Mn, 20.60% Cr, 33.50% Ni, 0.01% Cu, 0.51% Al, 0.46% Ti, 0.027% N
Steel group: Stainless steels
Note: Time-temperature sensitization and intergranular corrosion. TTS diagram. Annealed at 1050oC (1920oF) for 30 min and dirctly aged 120 h ferric sulphate-sulphuric acid test Supperscripts=approx. intergranular penetration in micrometers (C=complete), Subcripts=weight-loss ratio, Full curve=superimposed TTT boundary, Broken curves: calculated sensitization/self-healing boundaries for heat treatment using 10 mm Cr-depleted zone half width.
Reference: Not shown in this demo version.

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