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.
Fabrication and Heat Treatment
Grade 2205 stainless steel is annealed at 10201070°C (18681958°F) and then water quenched.
Grade 2205 stainless steel is hot worked in the temperature range of 9541149°C (1750 2100°F). Hot working of this grade stainless steel under room temperature is recommended whenever possible.
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
- Chemical tanks
- Heat exchangers
- Acetic acid distillation components