2205 is a standard duplex stainless steel with balanced ferrite and austenite microstructure. It integrates high mechanical strength, good toughness and excellent local corrosion resistance. Benefiting from reasonable chromium, nickel, molybdenum and nitrogen alloy design, it shows strong resistance to pitting, crevice corrosion and chloride stress corrosion cracking. It has stable mechanical properties, good weldability and cost-effective performance, widely used in petrochemical, sewage treatm

Advantage

1.Double-phase structure brings double strength compared with ordinary austenitic stainless steel 2.Excellent resistance to chloride pitting and stress corrosion cracking 3.Good fatigue resistance and abrasion resistance for harsh cyclic working conditions 4.Low carbon composition and stable welding performance, suitable for complex processing

Ingredient

• Cr
• 22.00 ~ 23.00
• Ni
• 4.50 ~ 6.50
• Mo
• 3.00 ~ 3.50
• N
• 0.14 ~ 0.20
• C
• ≤0.03
• Mn
• ≤2.00
• Si
• ≤1.00
• P
• ≤0.030
• S
• ≤0.020
• Fe
• Balance

Standard

• USA
• ASTM A312 / ASME SA312
• CHINA
• GB/T 12771‑2020、GB/T 14976‑2012

Mechanics

• STATE
• RP
• YIELD
• EXTEND
• SHRINK
• HARDNESS
• IMPACT
• Annealed
• ≥655 MPa
• ≥450 MPa
• ≥25 %
• ≥40 %
• ≤293 HBW
• ≥27 J
• Annealed
• ≥620 MPa
• ≥415 MPa
• ≥25 %
• ≥40 %
• ≤293 HBW
• ≥27 J

• STATE
• Annealed
• RP
• ≥655 MPa
• YIELD
• ≥450 MPa
• EXTEND
• ≥25 %
• SHRINK
• ≥40 %
• HARDNESS
• ≤293 HBW
• IMPACT
• ≥27 J
• STATE
• Annealed
• RP
• ≥620 MPa
• YIELD
• ≥415 MPa
• EXTEND
• ≥25 %
• SHRINK
• ≥40 %
• HARDNESS
• ≤293 HBW
• IMPACT
• ≥27 J