ZYTC Alloy supplies premium Duplex 2205 (UNS S31803/S32205) stainless steel in coil, pipe, plate, bar & flanges. Ideal for oil & gas, chemical, and marine applications. Get a free quote & material certification for high-strength, corrosion-resistant alloys.
Delivery :
FOB
minimum order :
50 kilograms
Supply Ability :
5000kilograms / Month
Stock Time :
7-10Day
Country of Origin :
CHINA
Quantity :
add to cart
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Duplex 2205 is a nitrogen-alloyed duplex stainless steel combining austenitic and ferritic microstructures, offering approximately twice the yield strength of standard austenitic grades (316L/317L) with excellent resistance to stress corrosion cracking, pitting, and crevice corrosion. With a PRE of 35+, it provides superior performance in chloride-containing environments up to 300°C. This grade is widely specified for oil & gas piping, chemical processing vessels, pulp & paper equipment, and structural components requiring high strength and corrosion resistance .
1. Product Specifications & Physical Data
ZYTC Alloy supplies Duplex 2205 in comprehensive mill forms for industrial applications requiring verified mechanical properties and complete material traceability.
Available Forms: Coil, pipe, tube, plate, sheet, round bar, flat bar, forging, and flanges .
Specifications: UNS S31803/S32205, ASTM A182 F51/F60, EN 10088-3 1.4462 (X2CrNiMoN22-5-3), NORSOK MDS D41-D48, NACE MR0175/ISO 15156 .
Chemical Composition (Weight %)
Duplex 2205 Specification
Chromium (Cr)
21.0 - 23.0
Nickel (Ni)
4.5 - 6.5
Molybdenum (Mo)
2.5 - 3.5
Nitrogen (N)
0.08 - 0.20
Carbon (C)
0.03 max.
Manganese (Mn)
2.0 max.
Silicon (Si)
1.0 max.
Phosphorus (P)
0.03 max.
Sulfur (S)
0.02 max.
Iron (Fe)
Balance
Physical Properties
Metric
Imperial
Density
7.8 g/cm³
0.285 lb/in³
Modulus of Elasticity
200 GPa
29.0 × 10⁶ psi
Thermal Conductivity
19 W/m·K
132 BTU·in/hr·ft²·°F
Coefficient of Expansion (20-100°C)
13.7 µm/m·°C
7.6 µin/in·°F
Mechanical Properties (Minimum)
Metric
Imperial
Tensile Strength
620 - 795 MPa
90 - 115 ksi
Yield Strength (0.2% offset)
450 MPa
65 ksi
Elongation
25%
25%
Hardness (Brinell)
290 max.
290 max.
Impact Strength (Charpy V, -20°C)
40 J
29.5 ft·lbf
2. Fabrication & Material Comparison
Heat Treatment: Solution anneal 1020-1100°C (1870-2012°F), water quench; rapid cooling essential to maintain phase balance .
Welding: Good weldability with controlled heat input; matching filler metals (2209) recommended to maintain duplex structure .
Forming: Higher strength requires more powerful equipment than austenitic grades; good cold formability .
Machining: Higher cutting forces than 316L; requires rigid setups, sharp tools, and adequate coolant .
Material Comparison:
vs. 316L: Twice the yield strength; superior SCC and pitting resistance; limited to 300°C max .
vs. 317L: Higher strength; comparable corrosion resistance with better SCC performance .
vs. 904L: Lower alloy cost; similar pitting resistance; different application profile .
vs. Super Duplex (2507): Lower strength and corrosion resistance; more cost-effective for moderate service .
3. Applications
Oil & Gas: Piping systems, flowlines, process vessels, heat exchangers
Chemical Processing: Reactors, columns, tanks, piping for aggressive media
Contact ZYTC Alloy for certified Duplex 2205 materials with complete traceability, ASTM/EN/NORSOK specifications, technical datasheets, and competitive pricing on standard sizes or custom-fabricated components.
