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EN10217-7 1.4301 Stainless Steel Pipe With Al Fins Extruded Fin Tube For HVAC&R
This product is a high-efficiency Bimetallic Finned Tube, specifically designed for heat transfer applications. It consists of a core pipe manufactured according to the European standard EN 10217-7(ASTM A312), made from austenitic stainless steel grade 1.4301 (equivalent to AISI 304). A finned surface is permanently bonded to this core pipe through an extrusion process.
The fundamental principle of this design is to leverage the superior properties of both metals:
-
The 1.4301 stainless steel inner pipe provides excellent corrosion resistance, high pressure containment, and strength, making it ideal for conveying media like water, steam, or various chemicals.
-
The external aluminum fins dramatically increase the external surface area of the tube. Aluminum's high thermal conductivity facilitates highly efficient heat transfer between the fluid inside the tube and the air (or gas) flowing across the finned exterior.
1.Chemical & Mechanical Properties
EN10217-7 1.4301(TP304) Chemical Composition (%)
|
| C |
Mn |
P |
S |
Si |
Ni |
Cr |
| 0.08% |
≤2.00% |
≤0.045% |
≤0.030% |
≤1.0% |
8.0%-11.0% |
18.0%-20.0% |
| Aluminum 1060 Fins Chemical Composition (%) |
| Al |
Fe |
Si |
Cu |
Mn |
Zn |
Else |
| ≥ 99.60% |
≤ 0.35% |
≤ 0.25% |
≤ 0.05% |
≤ 0.03% |
≤ 0.05% |
≤ 0.40% |
Mechanical Properties
| Component |
Mechanical Performance |
Key Features |
EN10217-7 1.4301
Base Tube |
· Tensile Strength: ≥515 MPa
· Yield Strength: ≥205 MPa
· Elongation (in 50mm): ≥35%
· Heat Treating Temperature: 1900℉(1040℃) |
· Combination of High Strength and Good Toughness
· Excellent Corrosion Fatigue Resistance
· Excellent Plasticity and Formability
· Good Weldability
|
| Aluminum 1060 Fins |
· Tensile Strength: 70-110 MPa
· Elongation: 15-25%
· Hardness: 23 HB. |
· Lightweight Design Reduces System Load
· Ductile For Vibration Absorption |
2. Key Features
The aluminum fins significantly increase the surface area for air contact, while aluminum's high thermal conductivity enables fast and efficient heat transfer from the fluid inside the steel tube to the outside air.
- Optimized Material Combination, Outstanding Cost-Effectiveness
The inner tube uses corrosion-resistant/pressure-resistant stainless steel, while the external fins use highly conductive and economical aluminum. This combination guarantees core performance at a much lower cost than all-stainless steel finned tubes.
- Excellent Corrosion Resistance & Long Service Life
The 1.4301 (304) stainless steel inner tube resists corrosion from water, steam, many chemicals, and marine atmospheres, ensuring long-term reliability of the core flow channel in demanding applications.
- Robust and Durable Mechanical Bond
The extrusion process creates a strong mechanical bond between the aluminum fin and the stainless steel core tube, resulting in minimal thermal contact resistance. It also resists vibration and thermal shock, preventing fin loosening.
- Superior Pressure-Bearing Capability of the Inner Tube
The stainless steel core pipe compliant with the EN10217-7 standard is designed for pressure purposes, safely withstanding the internal pressure of high-temperature and high-pressure fluids (e.g., steam, high-pressure water).
- Broad Applicability and Light Weight
The aluminum fins are lightweight, reducing the overall weight of the heat exchanger. This design is suitable for a wide temperature range, from low-temperature refrigeration to high-temperature heating.
3. Key Applications
- Heating, Ventilation, Air Conditioning & Refrigeration
(1) Gas-fired / Condensing Boilers
(2) Air Handling Units
(3) Heat Recovery Ventilators
(4) Refrigeration Systems
(1) Industrial Air Coolers
(2) Waste Heat Recovery Systems
(3) Power Plants
(4) Chemical & Petrochemical
Industrial Drying Equipment
(1) Marine & Offshore
(2) Machinery Equipment
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If you need a quick quote, please send as follows:
1. Base pipe: (1) Specification&Material (2) Diameter (3) Wall Thickness (4) Length
2. Fins: (1) Specification&Material (2) Type (solid or serrated) (3) Fin Height (4) Fin Thickness (5) Fin Pitch (6) Fin Length and no fins section.
3. Quantity of the fin tubes
4. Expected delivery date
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