S32205 Seamless Duplex Steel Pipe, also known as Duplex 2205, is a nitrogen-enhanced duplex stainless steel that offers a superior combination of high strength and excellent corrosion resistance. Seamless pipes and tubes made from this material are widely used in various demanding industrial applications where standard austenitic stainless steels are inadequate. Its balanced chemical composition and microstructure provide a desirable set of properties that make it a cost-effective solution for many corrosive environments,known for their excellent mechanical strength and durability in demanding environments.① STANDARD: ASTM A789/ ASTM A790/ ASTM A928/ ...② OD RANGE : 6-720 MM③ THICKNESS RANGE: 1-65 MM
|
Grade |
C |
Mn |
P |
S |
Si |
Ni |
Cr |
Mo |
N |
|
S32205 |
≤0.03 |
≤2.00 |
≤0.03 |
≤0.02 |
≤1.00 |
4.50~6.50 |
22.00~23.00 |
3.00-3.50 |
0.14-0.20 |
|
Grade |
Tensile Strength ksi(MPa) |
Yield Strength ksi (MPa) |
Elongation (%) |
Hardness HBW |
Hardness HRC |
|
S32205 |
≥95(655) |
≥65(450) |
≥25 |
≤290 |
≤30 |
UNS S32205, also known as Duplex 2205, is a duplex stainless steel alloy with excellent properties. Let’s explore its applications in various industries:
Remember that UNS S32205’s combination of corrosion resistance, strength, and weldability makes it a versatile material across various industrial applications.
Exceptional High Strength: It offers a yield strength that is approximately double that of conventional austenitic stainless steels like 316L, allowing for the design of lighter, thinner-walled components.
Superior Stress Corrosion Cracking (SCC) Resistance: The duplex structure provides outstanding resistance to chloride SCC, a common failure point for standard austenitic stainless steels (like 304L/316L) in warm, chloride-rich environments.
Excellent Localized Corrosion Resistance: The high content of Chromium (≈22% ),Molybdenum (≈3% ), and Nitrogen (N) provides superior resistance to pitting andcrevice corrosion, particularly effective in marine or brackish water environments.
Good Weldability: The material exhibits good weldability, though filler metal (like ER2209) is typically required, and it retains excellent corrosion properties in the as-welded condition.
High Energy Absorption/Toughness: It retains good toughness, including down to temperatures as low as −50∘C (−58∘F).
Low Thermal Expansion: Its coefficient of thermal expansion is lower than that of austenitic stainless steels, which helps reduce thermal stress and distortion in complex structures.
Duplex S32205 are the most common duplex grades in the market. They have very good resistance to localized corrosion and stress corrosion cracking in combination with high mechanical strength. They are widely used in oil & gas, hydro power, pressure vessels, pulp & paper, structural components and chemical tankers. The alloys are not intended to be used at temperatures above 300°C due to embrittlement..
S32205 are characterized by:
High resistance to stress corrosion cracking in halide containing environments.
High resistance to pitting and crevice corrosion.
High resistance to general corrosion.
High mechanical strength.
High resistance to erosion corrosion and corrosion fatigue.
UNS S32750 Seamless Super Duplex Steel Tube is a high-performance tubing solution engineered for demanding environments where exceptional strength and corrosion resistance are critical. This grade of steel, often referred to by the trade name 2507, boasts a balanced microstructure of austenite and ferrite, providing a superior combination of properties compared to standard duplex or austenitic stainless steels.UNS S32750 seamless super duplex steel pipe is a high-performance tubing solution engineered for demanding environments where exceptional strength and corrosion resistance are critical. This grade of steel, often referred to by the trade name 2507, boasts a balanced microstructure of austenite and ferrite, providing a superior combination of properties compared to standard duplex or austenitic stainless steels.① STANDARD: ASTM A789/ ASTM A790/ ASTM A928/ ...② OD RANGE : 6-720 MM③ THICKNESS RANGE: 1-65 MM
UNS S33207 Seamless Hyper Duplex Steel Pipe designed for exceptional strength, corrosion resistance, and toughness, especially in highly aggressive environments. As a seamless pipe, it offers superior structural integrity and uniform properties across the cross-section.Manufacturing Process: Seamless (hot finished / cold drawn)Standards: ASTM A790 / ASME SA790, NORSOK MDS, ISO, EN equivalentsSize Range: ½” to 24” OD (or custom sizes on request)Schedules: SCH 10 – SCH XXS
UNS S32750 seamless super duplex steel pipe is a high-performance tubing solution engineered for demanding environments where exceptional strength and corrosion resistance are critical. This grade of steel, often referred to by the trade name 2507, boasts a balanced microstructure of austenite and ferrite, providing a superior combination of properties compared to standard duplex or austenitic stainless steels.UNS S32750 seamless super duplex steel pipe is a high-performance tubing solution engineered for demanding environments where exceptional strength and corrosion resistance are critical. This grade of steel, often referred to by the trade name 2507, boasts a balanced microstructure of austenite and ferrite, providing a superior combination of properties compared to standard duplex or austenitic stainless steels.① STANDARD: ASTM A789/ ASTM A790/ ASTM A928/ ...② OD RANGE : 6-720 MM③ THICKNESS RANGE: 1-65 MM
UNS S31803 seamless duplex steel pipe, also known as Duplex 2205, is a high-strength, corrosion-resistant pipe with a dual-phase microstructure of austenitic and ferritic stainless steel. It offers excellent resistance to stress corrosion cracking, pitting, and crevice corrosion, particularly in chloride-rich environments like seawater. Standards: ASTM A790 / ASME SA790, ASTM A789 / ASME SA789
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