Grade 2205 stainless steel is a duplex stainless steel whose design enables combining improved resistance to pitting, high strength, stress corrosion, crevice corrosion and cracking. Grade 2205 stainless steel resists sulfide stress corrosion and chloride environments.
The chemical composition of grade 2205 stainless steel is outlined in the following table.
The mechanical properties of grade 2205 stainless steel are displayed in the following table.
Tensile strength at break
Yield strength (@strain 0.200 %)
Elongation at break (in 50 mm)
Hardness, Rockwell c
Equivalent materials to grade 2205 stainless steel are:
Grade 2205 stainless steel is annealed at 1020-1070°C (1868-1958°F) and then water quenched.
Welding methods recommended for grade 2205 stainless steel include SMAW, MIG, TIG and manual covered electrode methods. During the welding process, the material should be cooled below 149°C (300°F) between passes and preheating of the weld piece should be avoided. Low heat inputs should be used for welding grade 2205 stainless steel.
Grade 2205 stainless steel is difficult to form due to its high strength and work hardening rate.
Grade 2205 stainless steel can be machined with either carbide or high speed tooling. The speed is reduced by about 20% when carbide tooling is used.
Grade 2205 stainless steel is used in the following applications:
Flue gas filters
Acetic acid distillation components
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