Duplex Stainless Steel

Steel name: Duplex Stainless Steel
Diagram No.: 2868
Type of diagram: TTP
Chemical composition in weight %: 0.028% C, 0.45% Si, 1.63% Mn, 0.031% P, 0.012% S, 21.80% Cr, 3.12% Mo, 5.00% Ni, 0.113% N, 0.05% Cu
Steel group: Stainless steels
Note: Precipitation diagram. Phases in stainless steel. TTP diagram of alloy solution annealed 30 min at 1050oC (water quenched) and heated as shown. Treatment: Solution annealed at 1050oC 30 min (water quenching) and then heated 2 min to 30 hrs at 300 to 1000oC (water quenching) in temperature steps of 50oC. For investigating the dissolution of intermetallic compounds precipitated at low temperature, solution annealed specimens were heated 1 h at 750oC, 3 h at 850oC, followed by water quenching, and then again heat-treated 5 min to 1 h at 100 to 1250oC with subsequent water quenching.
Reference: Not shown in this demo version.

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