DUPLEX 2205 (S31803)

Specifications

The following specifications cover Stainless Steel Alloy 2205

Property Results

Related Metals:

• Marinox 21(tm)
• 2205(tm)
• AF.F51
• AL 2205(tm)
• Cabvalloy alloy VS-22(tm)
• F51
• Cabvalloy VS-22(tm)
• RA 2205(tm)
• Duplex Alloy 2205

Chemistry Data :

Principal Design Features		2205 is a duplex stainless steel designed to combine improved resistance to stress corrosion cracking, pitting, crevice corrosion and high strength when compared with other stainless alloys. This alloy resists chloride environments and sulfide stress corrosion. It is also roughly double the strength of standard austenitic stainless steels.

Applications		Most often employed in welded pipe and tube in chemical tanks, flue gas filters, acetic acid distillation components and heat exchangers.

Machinability		Similar in nature to 316 stainless steel. Slow speeds, positive feeds, sharp tooling and rigid mounts are essential. Machinable with either high speed or carbide tooling, with speeds for carbide reduced by roughly 20 %.

Forming		Due to its inherently high strength and work hardening rate, 2205 is difficult to form. It will take a lower radius than 316 stainless and a higher allowance must be made for springback.

Welding		TIG, MIG, SMAW and manual covered electrode methods have been successfully employed. Use caution in the following areas : 1.) Do not preheat the weld piece. 2.) use low heat inputs and 3.) Cool below 300 F between passes.

Hot Working		Hot work should be done in the range of 1750-2100 F, although room temperature forming is recommended whenever possible. When any hot forming is performed, a full anneal with rapid quench is required to reattain maximum stability and properties.

Annealing		Anneal at 1868-1958 F(1020-1070 C), water quench.

Physical Data : 

Density (lb / cu. in.)	0.285
Specific Gravity	7.88
Specific Heat (Btu/lb/Deg F – [32-212 Deg F])	0.1
Modulus of Elasticity Tension	27.5

Mechanical Data :