Stainless Steel 316 Fin Tubes, SS 316 Fin Tubes, 316 Stainless Steel Fin Tube Manufacturer, SS 316 Fin Tube Supplier, SS 316 Fin Tube Exporter, Stainless Steel 316 Precision Tubing, SS 316 Small Diameter Tube ,SS 316 Fin Tubes
Stainless Steel 316 fin tubes are specialized heat exchanger components widely used in industries requiring high resistance to corrosion, heat, and mechanical stress. These tubes feature external fins that increase the surface area for improved heat transfer efficiency. The base material, stainless steel 316, is a molybdenum-bearing austenitic stainless steel known for its superior resistance to pitting and crevice corrosion, especially in chloride-rich environments such as seawater and chemical processing plants.
The standout characteristic of stainless steel 316 is its chemical composition, which includes chromium, nickel, and molybdenum. The addition of molybdenum significantly enhances corrosion resistance compared to 304 stainless steel. This makes 316 an excellent choice for applications where the tube is exposed to aggressive environments. It also retains excellent strength and ductility at both high and low temperatures, making it reliable in demanding thermal cycling operations.
The fins on 316 stainless steel tubes are designed to increase the heat transfer surface area, improving the efficiency of thermal exchange between fluids. These fins can be integrally formed from the tube material or attached externally using welding or mechanical bonding techniques. This design is especially useful in compact heat exchangers, air-cooled heat exchangers, and economizers where space is limited but thermal performance is critical.
Stainless steel 316 fin tubes are commonly found in marine, petrochemical, power generation, pharmaceutical, and food processing industries. Their ability to withstand corrosive environments makes them ideal for offshore oil rigs, desalination plants, and chemical reactors. They are also preferred in HVAC systems and boiler applications where long service life and reduced maintenance are essential.
Specification of Stainless Steel 316 Fin Tubes
| Property | Specification |
|---|---|
| Material Grade | Stainless Steel 316 / 316L |
| UNS Number | S31600 / S31603 |
| Standard Specifications | ASTM A213, ASTM A249, ASTM A269, ASTM A312 (for tubes) |
| Fin Types | Integral (extruded), Welded, or Wrapped |
| Fin Material | Same as tube (SS 316) or other compatible alloys |
| Tube Outer Diameter (OD) | 6 mm to 38.1 mm (1/4” to 1.5”) |
| Tube Wall Thickness | 0.5 mm to 2.5 mm (depending on application) |
| Fin Height | 3 mm to 15 mm |
| Fin Thickness | 0.3 mm to 1.0 mm |
| Fin Pitch (Fins per Inch) | 5 to 11 FPI (can vary by design) |
| Maximum Working Temperature | Up to 870°C (1600°F) |
| Corrosion Resistance | Excellent, especially against chlorides and acidic environments |
| Tensile Strength | ≥ 515 MPa (74.7 ksi) |
| Yield Strength (0.2% offset) | ≥ 205 MPa (29.7 ksi) |
| Elongation | ≥ 40% |
| Hardness | ≤ 95 HRB (annealed condition) |
| Common Applications | Heat exchangers, condensers, air coolers, chemical processing units |
Using 316 stainless steel fin tubes provides benefits like improved longevity, reduced corrosion-related failures, and enhanced thermal performance. However, they may come at a higher initial cost compared to carbon steel or lower-grade stainless alternatives. Still, for applications demanding high reliability and low lifecycle maintenance, the investment in 316 fin tubes is often justified by the long-term savings and consistent performance.
Chemical Composition of Stainless Steel 316 Fin Tubes
| Element | Composition (% by weight) |
|---|---|
| Carbon (C) | ≤ 0.08% |
| Manganese (Mn) | ≤ 2.00% |
| Phosphorus (P) | ≤ 0.045% |
| Sulfur (S) | ≤ 0.030% |
| Silicon (Si) | ≤ 1.00% |
| Chromium (Cr) | 16.0 – 18.0% |
| Nickel (Ni) | 10.0 – 14.0% |
| Molybdenum (Mo) | 2.0 – 3.0% |
| Nitrogen (N) | ≤ 0.10% |
| Iron (Fe) | Balance |
With a proven track record as a Stainless Steel 316 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 202 tubing worldwide.
Specification of Stainless Steel 316 Fin Tubes
| Property | Specification |
|---|---|
| Material Grade | Stainless Steel 316 / 316L |
| UNS Number | S31600 / S31603 |
| Standard Specifications | ASTM A213, ASTM A249, ASTM A269, ASTM A312 (for tubes) |
| Fin Types | Integral (extruded), Welded, or Wrapped |
| Fin Material | Same as tube (SS 316) or other compatible alloys |
| Tube Outer Diameter (OD) | 6 mm to 38.1 mm (1/4” to 1.5”) |
| Tube Wall Thickness | 0.5 mm to 2.5 mm (depending on application) |
| Fin Height | 3 mm to 15 mm |
| Fin Thickness | 0.3 mm to 1.0 mm |
| Fin Pitch (Fins per Inch) | 5 to 11 FPI (can vary by design) |
| Maximum Working Temperature | Up to 870°C (1600°F) |
| Corrosion Resistance | Excellent, especially against chlorides and acidic environments |
| Tensile Strength | ≥ 515 MPa (74.7 ksi) |
| Yield Strength (0.2% offset) | ≥ 205 MPa (29.7 ksi) |
| Elongation | ≥ 40% |
| Hardness | ≤ 95 HRB (annealed condition) |
| Common Applications | Heat exchangers, condensers, air coolers, chemical processing units |
🏭 Industry & Application
- ✅ SS 316 Fin Tubes for Medical Industry
- ✅ SS 316 Fin Tubes for Chemical Processing
- ✅ SS 316 Tubes for Fin Lines
- ✅ Stainless Steel 316 Fin Tubes for Gas & Liquid Flow
- ✅ SS 316 Tubes for Heat Exchangers
❓ Frequently Asked Questions (FAQs)
Q1:What are Stainless Steel 316 Fin Tubes used for?
Stainless Steel 316 fin tubes are primarily used in heat exchangers, boilers, air coolers, and condensers where high corrosion resistance and efficient heat transfer are required. Common industries include chemical processing, marine, oil & gas, power generation, and food processing.
Q2:What makes SS 316 better than SS 304 for fin tubes?
SS 316 contains molybdenum (2–3%), which provides better resistance to corrosion, especially in chloride-rich or marine environments. This makes it more durable than SS 304 in harsh conditions.
Q3:What temperature can SS 316 fin tubes withstand?
SS 316 fin tubes can typically handle temperatures up to 870°C (1600°F) under intermittent service and around 925°C (1700°F) in continuous service, depending on the environment and fin type.
Stainless Steel 316 Fin Tubes exporter
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At Sumer Metal Industries Pvt. Ltd., we follow a zero-defect policy by implementing stringent quality checks, using certified raw materials, and continuously improving our processes to deliver reliable and consistent tubing solutions
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