ASTM:
A890 4A
ASME:
SA890 4A
Alloy Family:
Type:
22Cr-5Ni-Mo-N
ACI:
CD3MN
AISI:
2205
SAE:
UNS - Cast:
J92205
UNS - Wrought:
S31803
Common Name - Wrought:

Alloy Casting Statistics

Pounds Poured in 2021

21,420 lb

Frequently Asked Questions

01

Q. What is duplex stainless steel?

A. Duplex stainless steel is an alloy with a two-phase metallurgical structure consisting of austenite and ferrite in almost equal parts. The content composition of duplex steel has a higher level of chromium and molybdenum, lower nickel and a percentage of nitrogen between 0.05 to 0.50%. This composition, coupled with heat treatment, makes duplex stainless better at corrosion resistance (chloride stress corrosion and chloride pitting corrosion especially) and higher strength when compared to austenitic stainless.

Alloy Casting Industries Ltd makes all reasonable efforts to ensure the accuracy and correctness of the data displayed on this site but makes no representations or warranties as to the data’s accuracy, correctness or reliability. The information provided on this page is for reference purposes only. Please consult the appropriate industry standard when necessary.

Alloy Standard

Chemical Composition

  • Carbon:
    0.03% Max
  • Manganese:
    1.50% Max
  • Silicon:
    1.00% Max
  • Phosphorus:
    0.04% Max
  • Sulfur:
    0.02% Max
  • Chromium:
    21.00 - 23.50%
  • Nickel:
    4.50 - 6.50%
  • Molybdenum:
    2.50 - 3.50%
  • Nitrogen:
    0.10 - 0.30%
  • Nitrogen + Carbon:
  • Vanadium:
  • Tungsten:
  • Aluminum:
  • Titanium:
  • Copper:
    1.00% Max
  • Columbium:
  • Barium:
  • Boron:
  • Zirconium:
  • Cerium + Lanthanum:
  • Iron:
  • Residual Elements:

Physical Properties

  • Yield Strength:
    60 ksi Min
  • Tensile Strength:
    90 ksi Min
  • Elongation at 2 in:
    25% Min
  • Reduction of Area:

Charpy Properties

  • Test Temperature:
  • Average Energy¹:
  • Single Energy:

¹ Minimum value for 2 test specimens and minimum average of 3 test specimens.