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Duplex Steel 2205 Ferrule Fittings are precision-engineered components designed to offer exceptional performance in high-pressure and corrosive industrial environments. Made from Duplex 2205 stainless steel, these fittings possess a dual-phase microstructure of austenite and ferrite, providing outstanding mechanical strength and corrosion resistance. They are highly resistant to stress corrosion cracking, pitting, and crevice corrosion, especially in chloride-containing environments. These properties make them suitable for industries like oil & gas, chemical processing, marine, and desalination plants. Their robust construction ensures reliable, leak-free connections even under extreme operating conditions.
Manufactured according to ASTM A182 and ASME SA182 standards, Duplex Steel 2205 Ferrule Fittings offer excellent toughness and twice the yield strength of standard austenitic stainless steels. The alloy composition, enriched with chromium, molybdenum, and nitrogen, enhances resistance to oxidation and corrosion at elevated temperatures. These fittings are ideal for use in both low- and high-temperature services, maintaining stability under thermal and pressure variations. They are available in multiple types such as unions, elbows, tees, and adapters to meet diverse piping and instrumentation requirements.
Duplex Steel 2205 Ferrule Fittings are particularly valued for their superior corrosion resistance in aggressive media like seawater, brine, and chemical solutions. The balanced microstructure minimizes susceptibility to intergranular corrosion and stress corrosion cracking. Their exceptional resistance to pitting and crevice corrosion makes them reliable in environments containing chlorides and sulfides. These features make them a preferred choice for offshore drilling platforms, desalination units, and chemical plants. Their durability ensures extended service life and reduced maintenance costs for long-term industrial use.
The ferrule design in Duplex Steel 2205 Fittings includes a front and back ferrule that compress against the tubing when tightened, forming a strong, leak-proof joint. This dual ferrule system enhances resistance to vibration and pressure fluctuations while ensuring reliable performance under cyclic loading. These fittings eliminate the need for welding, allowing easy installation, disassembly, and maintenance. Precision machining ensures dimensional accuracy, smooth internal surfaces, and consistent sealing efficiency. The result is a secure connection with minimal pressure drop and maximum system efficiency.
Available in a wide range of sizes, pressure ratings, and configurations, Duplex Steel 2205 Ferrule Fittings cater to diverse industrial applications. Each fitting undergoes stringent testing procedures, including hydrostatic, pneumatic, and non-destructive testing, to verify quality and integrity. They meet international standards like ANSI, DIN, and BS, ensuring global compatibility. The fittings are designed to handle high-pressure instrumentation systems and are available with both metric and imperial connections. Their robust design and precision engineering make them suitable for complex piping networks.
These ferrule fittings find extensive applications in industries requiring strength, corrosion resistance, and reliability. They are commonly used in refineries, petrochemical plants, power generation units, and offshore platforms. The Duplex 2205 alloy provides excellent fatigue strength and impact resistance, even at sub-zero temperatures. The fittings are designed to withstand harsh operational conditions without compromising safety or performance. Their ability to maintain consistent sealing and mechanical properties under dynamic stresses makes them ideal for process control and hydraulic systems.
Proper handling, installation, and maintenance are crucial to ensuring the long-term performance of Duplex Steel 2205 Ferrule Fittings. Using compatible tubing materials and applying correct torque during assembly ensures a leak-free and durable connection. Routine inspections help detect any wear or corrosion early, enhancing system safety and efficiency. These fittings provide an optimal combination of cost-effectiveness, strength, and longevity. Duplex Steel 2205 Ferrule Fittings have proven to be a reliable solution for industries requiring durable and corrosion-resistant piping connections in demanding environments.
Specification Table
| Specification | Details |
|---|---|
| Product | Duplex Steel 2205 Ferrule Fittings |
| Grade | Duplex Stainless Steel 2205 (UNS S32205 / S31803) |
| Standard | ASTM A182, ASME SA182, ASTM A479, ASTM A276 |
| Size Range | 1/8” OD to 2” OD, 3mm to 50mm OD |
| Pressure Rating | Up to 6000 PSI (depending on size and design) |
| End Connections | Male / Female Threads, Tube Ends, Weld Ends, Compression Type |
| Thread Type | NPT, BSP, BSPT, UNF, ISO, SAE |
| Form | Union, Elbow, Tee, Cross, Adapter, Connector, Bulkhead, Reducer |
| Finish | Natural, Polished, Electro-Polished, Pickled and Passivated |
| Temperature Range | -50°C to +300°C (depending on application) |
| Manufacturing Process | Forged, Machined, Heat Treated, and Passivated |
| Applications | Oil & Gas, Chemical Processing, Marine, Desalination, Pulp & Paper, Power Generation |
Chemical Composition (Typical ranges for SS2205)
Note: Values are typical ranges. Final composition will be confirmed on MTC provided per lot.
| Element | Content (%) |
|---|---|
| Chromium (Cr) | 21.0 – 23.0 |
| Nickel (Ni) | 4.5 – 6.5 |
| Molybdenum (Mo) | 2.5 – 3.5 |
| Manganese (Mn) | ≤ 2.00 |
| Silicon (Si) | ≤ 1.00 |
| Carbon (C) | ≤ 0.030 |
| Phosphorus (P) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.020 |
| Nitrogen (N) | 0.08 – 0.20 |
| Iron (Fe) | Balance |
Mechanical Properties (Typical)
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | 620 Min | MPa |
| Yield Strength (0.2% Proof) | 450 Min | MPa |
| Elongation | 25 Min | % |
| Hardness (Brinell) | 290 Max | HB |
| Impact Strength | ≥ 100 | J (at Room Temperature) |
| Modulus of Elasticity | 200 | GPa |
| Density | 7.8 | g/cm³ |
| Melting Point | 1350 – 1450 | °C |
Equivalent Grades
| STANDARD | GRADE |
|---|---|
| UNS | S31803 / S32205 |
| WERKSTOFF NR. | 1.4462 |
| EN | X2CrNiMoN22-5-3 |
| AFNOR | Z2CND22-05Az |
| BS | 318S13 / 318S12 |
| GOST | 08Х22Н6Т |
| JIS | SUS 329J3L |
| ASTM / ASME | A182 / SA182, A240 / SA240 |
Dimension & Weight Chart (Selected common sizes)
Below is a representative chart showing outside diameter, wall thickness, inside diameter, cross-sectional area of metal and calculated weight per metre (kg/m). Values are calculated using density = 7.93 g/cm³ and are for guidance — use actual MTC values for procurement & engineering.
| Tube OD (inches) | Thread Size | Length (mm) | Across Flats (mm) | Approx. Weight (grams) |
|---|---|---|---|---|
| 1/8" | 1/8" NPT | 26 | 14 | 25 |
| 1/4" | 1/4" NPT | 33 | 17 | 40 |
| 3/8" | 3/8" NPT | 38 | 19 | 60 |
| 1/2" | 1/2" NPT | 45 | 24 | 90 |
| 5/8" | 5/8" UNF | 50 | 27 | 120 |
| 3/4" | 3/4" NPT | 55 | 30 | 150 |
| 1" | 1" NPT | 65 | 36 | 220 |
| 1-1/4" | 1-1/4" NPT | 75 | 46 | 320 |
| 1-1/2" | 1-1/2" NPT | 85 | 50 | 420 |
| 2" | 2" NPT | 95 | 65 | 650 |
Types Of Stainless Steel 2205 Ferrule Fittingss and Tubes
Stainless Steel Ferrule Fitting
Monel 400 Ferrule Fitting
Hastelloy Ferrule Fitting
Nickel Ferrule Fitting
Super Duplex Ferrule Fitting
Duplex Ferrule Fitting
Inconel 600 Ferrule Fitting
Monel K500 Ferrule Fitting
Frequently Asked Questions (FAQ)
What are Duplex Steel 2205 Ferrule Fittings?
Duplex Steel 2205 Ferrule Fittings are compression-type tube fittings made from duplex stainless steel alloy 2205, which combines excellent corrosion resistance with high tensile strength. These fittings are widely used for leak-proof connections in high-pressure and corrosive fluid systems.
What are the main advantages of using Duplex 2205 Ferrule Fittings?
The main advantages include superior corrosion resistance to chloride and acidic environments, higher strength compared to 304/316 grades, excellent stress corrosion cracking resistance, and long-term durability in harsh industrial conditions.
In which industries are Duplex Steel 2205 Ferrule Fittings commonly used?
These fittings are commonly used in oil and gas, chemical processing, power generation, marine, desalination, pulp and paper, and petrochemical industries where corrosion resistance and high mechanical strength are critical.
What are the available types of Duplex 2205 Ferrule Fittings?
Available types include unions, elbows, tees, adapters, connectors, bulkhead fittings, cross fittings, reducers, and male/female connectors. Custom configurations can also be manufactured as per project requirements.
What is the pressure rating of Duplex 2205 Ferrule Fittings?
The fittings are generally rated up to 6000 PSI depending on size, design, and wall thickness. They are suitable for both high-pressure and vacuum applications.
Are Duplex Steel 2205 Ferrule Fittings resistant to seawater?
Yes, Duplex 2205 has excellent resistance to seawater and chloride stress corrosion cracking, making it ideal for marine and offshore applications including desalination plants and ship systems.
>Can Duplex 2205 Ferrule Fittings be welded?
Yes, these fittings can be welded using proper duplex stainless steel welding techniques. It is important to maintain balanced heat input to preserve the duplex microstructure and corrosion resistance.
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