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Pitting Resistance Duplex Stainless Steel Low Thermal Expansion Coefficient

Wuxi Jinlai Mechanical Processing Co., Ltd.

Pitting Resistance Duplex Stainless Steel Low Thermal Expansion Coefficient

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Brand Name : JIN LAI

Model Number : 2205

Certification : ISO SGS

Place of Origin : CHINA

MOQ : 3 tons

Price : negotiable based on the quantity

Payment Terms : T/T, Western Union, L/C

Supply Ability : 3000 tons per month

Delivery Time : within 15-20 days after deposit

Packaging Details : Standard seaport packing or as customized

Standard : AISI, ASTM, BS, DIN, GB, JIS

Width : 1000-2000mm

Length : 2000-6000mm

Surface treatment : Coated

Port : Shanghai

Type : Steel plate

Edge : Slit edge or mill edge

Grade : 200 series 300 series 400 series

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Alloy 2205 (UNS S32305/S31803) is a 22% chromium, 3% molybdenum, 5-6% nickel, nitrogen alloyed duplex stainless steel plate with high general, localized, and stress corrosion resistance properties in addition to high strength and excellent impact toughness.

Alloy 2205 duplex stainless steel plate provides pitting and crevice corrosion resistance superior to 316L or 317L austenitic stainless steels in almost all corrosive media. It also has high corrosion and erosion fatigue properties as well as lower thermal expansion and higher thermal conductivity than austenitic.

Chemical Composition (%) of 2205 Duplex Stainless Steel Plate

C Mn Si P S Cr Mo Ni N
2205 (S31803) 0.03 2.0 1.0 0.03 0.02 21.0- 23.0 2.5-3.5 4.5-6.5 0.08-0.20
2205 (S32205) 0.03 2.0 1.0 0.03 0.02 22.0-23.0 3.0-3.5 4.5-6.5 0.14-0.20

Mechanical Properties of 2205 Duplex Stainless Steel Plate

Grade Tensile Strength ksi (min) Yield Strength 0.2% ksi (min) Elongation % Hardness (HB) MAX
2205 90 65 25 217

Physical Properties of 2205 Duplex Stainless Steel Plate

Density
lbm/in3
Electrical
Resistivity
mW•in
tdermal
Conductivity
(BTU/hr•ft•°F)
Heat
Capacity
BTU/lbm•°F
Electrical
Resistivity
(in x 10-6)
at 68°F 0.278 27.6 8.7 0.112 33.5
at 212°F 26.1 9.2 0.119 35.4
at 392°F 25.4 9.8 0.127 37.4
at 572°F 24.9 10.4 0.134 39.4

2205 Duplex Stainless Steel Plate Processing – Hot Forming:

Most Duplex 2205 producers recommend a maximum hot forming temperature between 2010 and 2100°F (1100 to 1150°C). If the shape of the work piece is not compact, the edges may be significantly cooler than the bulk, and there is risk of cracking in the cooler regions.

2205 Duplex Stainless Steel Plate Processing – Cold Forming:

Duplex 2205 has shown good formability in a variety of fabrications. The high strength of Duplex 2205 can pose problems. Even when the equipment has sufficient power, allowance must be made for higher spring-back caused by the grade’s high strength.

2205 Duplex Stainless Steel Plate Applications:

  • Chemical processing, transport and storage – pressure vessels, tanks, piping, and heat exchangers
  • Oil and gas exploration and processing equipment – piping, tubing, and heat exchangers
  • Marine and other high chloride environments
  • Effluent scrubbing systems
  • Pulp and paper industry – digesters, bleaching equipment, and stock-handling systems
  • Cargo tanks for ships and trucks
  • Food processing equipment
  • Biofuels plants

2205 Duplex Stainless Steel Equivalent Standards:

  • ASTM/ASME: A240 UNS S32205/S31803
  • EURONORM: 1.4462 X2CrNiMoN 22.5.3
  • AFNOR: Z3 CrNi 22.05 AZ
  • DIN: W.Nr 1.4462
  • 2205 is a duplex (austenitic-ferritic) stainless steel containing about 40 - 50% ferrite in the annealed condition. 2205 has been a practical solution to chloride stress corrosion cracking problems experienced with 304/304L or 316/316L stainless. The high chromium, molybdenum and nitrogen contents provide corrosion resistance superior to 316/316L and 317L stainless in most environments.
    2205 is not suggested for operating temperatures up to 600°F.

    The design strength of 2205 is significantly higher than 316/316L, often permitting lighter wall construction.
    2205 has good notch impact toughness down to temperatures below - 40°F. 2205 is welded with E2209 or ER2209 fillers.

    Hairline Finish Stainless Steel Sheet Chemistry
Ni Cr Mo Mn Si C N S P Fe
MIN 4.5 22.0 3.0 - - - 0.14 - - -
MAX 6.5 23.0 3.5 2.0 1.0 0.03 0.2 0.02 0.03 Balance

  • Hairline Finish Stainless Steel Sheet Mechanical Properties
Temperature, °F 70 212 392 572
Coefficient* of Thermal Expansion, in/in°F x 10-6 - 8 8 8
Thermal Conductivity
Btu • ft/ft2 • hr • °F
8 9 10 11
Modulus of Elasticity, Dynamic psi x 106 28 26 25 24
  • * 70°F to indicated temperature.
    Mechanical Properties
    Minimum Specified Properties, ASTM A 240
Ultimate Tensile Strength, ksi 95
0.2% Yield Strength, ksi 65
Elongation, % 25
Hardness MAX, Brinell 290
  • Minimum Elevated Tensile Properties, Plate
Temperature, °F 212 302 392 482
Ultimate Tensile Strength, ksi 86 83 80 78
0.2% Yield Strength, ksi 52 49 46 44
  • Corrosion Resistance
PREn Critical Pitting Temperature, CPT
2205 34 130°F
316L 24 62°F


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