Duplex Steel S32205 Fin Tubes, Duplex Steel 32205 Fin Tubes, 32205 Duplex Steel Fin Tube Manufacturer, Duplex Steel 32205 Fin Tube Supplier, Duplex Steel 32205 Fin Tube Exporter, Duplex Steel 32205 Precision Tubing, Duplex Steel 32205 Small Diameter Tube ,Duplex Steel 32205 Fin Tubes
Duplex Steel S32205 Fin Tubes are high-performance heat exchanger components known for their exceptional mechanical strength and corrosion resistance. Made from Duplex Stainless Steel grade S32205 (also known as UNS S32205), these finned tubes are used primarily in environments where both strength and corrosion resistance are critical. The S32205 alloy is a nitrogen-enhanced duplex stainless steel that offers a balanced structure of austenite and ferrite phases, which contributes to its superior resistance to stress corrosion cracking, pitting, and crevice corrosion.
The fin tubes are designed to improve heat transfer efficiency by increasing the surface area in contact with the fluid or gas. This makes them ideal for use in heat exchangers, condensers, boilers, and air coolers. Duplex S32205 Fin Tubes are particularly valuable in offshore and onshore oil & gas applications, petrochemical industries, and chemical processing plants, where conventional materials might fail due to aggressive operating conditions.
One of the key advantages of using Duplex S32205 in finned tubes is its high yield strength, which is roughly double that of standard austenitic stainless steels like 304 or 316. This means thinner wall sections can be used without compromising performance, resulting in lighter, more cost-effective equipment. Additionally, the alloy maintains good weldability and formability, making it a practical choice for a variety of custom tube and fin designs.
In terms of corrosion resistance, Duplex S32205 performs exceptionally well in chloride-rich environments. It resists localized corrosion like pitting and crevice corrosion better than most other stainless steels. This characteristic makes it suitable for coastal and marine applications, or wherever seawater cooling is involved. The combination of mechanical strength and corrosion resistance helps extend service life and reduce maintenance requirements.
Specification of Duplex Steel S32205 Fin Tubes
| Parameter | Specification |
|---|---|
| Material Grade | Duplex Stainless Steel S32205 (UNS S32205) |
| Chemical Composition (%) | C ≤ 0.03, Mn ≤ 2.00, Si ≤ 0.80, P ≤ 0.030, S ≤ 0.020, Cr 21.0–23.0, Ni 4.5–6.5, Mo 2.5–3.5, N 0.08–0.20, Fe Balance |
| Microstructure | Duplex (Austenite + Ferrite) |
| Yield Strength | ≥ 450 MPa (approx.) |
| Tensile Strength | 620 – 880 MPa |
| Elongation | ≥ 25% |
| Hardness (Brinell) | ≤ 280 HB |
| Corrosion Resistance | Excellent resistance to pitting, crevice, and stress corrosion cracking |
| Operating Temperature | Up to 300°C (approx.) |
| Fin Type | Embedded fin, L-fin, G-fin (customizable) |
| Tube Outer Diameter (OD) | Typically 12 mm to 60 mm (custom sizes available) |
| Tube Wall Thickness | 1.0 mm to 3.0 mm (typical range) |
| Fin Height | 0.5 mm to 3.0 mm (varies by design) |
| Fin Pitch | 1.0 mm to 5.0 mm (depends on heat transfer needs) |
| Surface Finish | Mill finish or polished (optional) |
| Standards Compliance | ASTM A789 / A790, EN 10217, ASME SA-789 |
In summary, Duplex Steel S32205 Fin Tubes offer an excellent solution for demanding heat exchange applications, balancing strength, durability, and corrosion resistance. Their efficiency and performance in aggressive environments make them a preferred choice in many industrial sectors. Whether it's for high-pressure systems or corrosive media handling, these finned tubes provide long-lasting and reliable thermal performance.
Chemical Composition of Duplex Steel S32205 Fin Tubes
| Element | Typical Composition (%) | Function/Notes |
|---|---|---|
| Carbon (C) | ≤ 0.03 | Minimizes carbide precipitation |
| Manganese (Mn) | ≤ 2.00 | Deoxidizer and improves strength |
| Silicon (Si) | ≤ 0.80 | Deoxidizer, improves oxidation resistance |
| Phosphorus (P) | ≤ 0.030 | Impurity, kept low for corrosion resistance |
| Sulfur (S) | ≤ 0.020 | Impurity, kept low to avoid brittleness |
| Chromium (Cr) | 21.0 – 23.0 | Main element for corrosion resistance |
| Nickel (Ni) | 4.5 – 6.5 | Enhances toughness and corrosion resistance |
| Molybdenum (Mo) | 2.5 – 3.5 | Improves pitting and crevice corrosion resistance |
| Nitrogen (N) | 0.08 – 0.20 | Enhances strength and corrosion resistance |
| Iron (Fe) | Balance | Base metal |
With a proven track record as a Duplex Steel S32205 Fin Tubes exporter in over 30 countries, Sumer Metal Industries ensures global availability, third-party inspection support, and client-specific customization. Our wide export network combined with strict quality standards has made us a preferred choice for SS 32205 tubing worldwide.
Specification of Duplex Steel S32205 Fin Tubes
| Parameter | Specification |
|---|---|
| Material Grade | Duplex Stainless Steel S32205 (UNS S32205) |
| Chemical Composition (%) | C ≤ 0.03, Mn ≤ 2.00, Si ≤ 0.80, P ≤ 0.030, S ≤ 0.020, Cr 21.0–23.0, Ni 4.5–6.5, Mo 2.5–3.5, N 0.08–0.20, Fe Balance |
| Microstructure | Duplex (Austenite + Ferrite) |
| Yield Strength | ≥ 450 MPa (approx.) |
| Tensile Strength | 620 – 880 MPa |
| Elongation | ≥ 25% |
| Hardness (Brinell) | ≤ 280 HB |
| Corrosion Resistance | Excellent resistance to pitting, crevice, and stress corrosion cracking |
| Operating Temperature | Up to 300°C (approx.) |
| Fin Type | Embedded fin, L-fin, G-fin (customizable) |
| Tube Outer Diameter (OD) | Typically 12 mm to 60 mm (custom sizes available) |
| Tube Wall Thickness | 1.0 mm to 3.0 mm (typical range) |
| Fin Height | 0.5 mm to 3.0 mm (varies by design) |
| Fin Pitch | 1.0 mm to 5.0 mm (depends on heat transfer needs) |
| Surface Finish | Mill finish or polished (optional) |
| Standards Compliance | ASTM A789 / A790, EN 10217, ASME SA-789 |
🏭 Industry & Application
- ✅ Duplex Steel S32205 Fin Tubes for Medical Industry
- ✅ Duplex Steel S32205 Fin Tubes for Chemical Processing
- ✅ Duplex Steel S32205 Tubes for Fin Lines
- ✅ Duplex Steel S32205 Fin Tubes for Gas & Liquid Flow
- ✅ Duplex Steel S32205 Tubes for Heat Exchangers
❓ Frequently Asked Questions (FAQs)
Q1:What is Duplex Steel S32205 and why is it used for fin tubes?
Duplex Steel S32205 is a nitrogen-enhanced duplex stainless steel alloy containing approximately equal parts of austenite and ferrite. This unique structure gives it superior strength and excellent corrosion resistance, especially in chloride-containing environments. It is used in fin tubes to enhance thermal performance while withstanding harsh service conditions such as those found in chemical plants, refineries, and marine applications.
Q2:What are the benefits of using fin tubes made from Duplex S32205?
High mechanical strength – about twice the strength of austenitic stainless steels Excellent corrosion resistance – particularly to pitting, crevice, and stress corrosion cracking Improved heat transfer – due to the increased surface area of the fins Cost-effectiveness – thinner wall thicknesses are possible due to higher strength Longer service life – in aggressive and corrosive environments
Q3:How do Duplex S32205 Fin Tubes perform in high-temperature or high-pressure environments?
Duplex S32205 maintains good mechanical strength and structural stability up to approximately 300°C. It is suitable for moderate to high-pressure applications due to its high yield strength. However, prolonged exposure to very high temperatures (above 300°C) may lead to embrittlement due to phase changes, so temperature limits should be observed depending on the service environment.
Duplex Steel S32205 Fin Tubes exporter
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