Extruded fin tube SB444 UNS N06625
ASME SB444 UNS N06625 Extruded Fin Tubes: High-Performance Heat Transfer Solution
Extruded fin tubes manufactured from ASME SB444 UNS N06625 alloy (commonly known as Inconel 625) are critical heat exchanger components engineered for extreme industrial environments requiring exceptional corrosion resistance and thermal performance under high-temperature conditions.
Material Specifications: ASME SB444 UNS N06625
- ASME SB444: American Society of Mechanical Engineers (ASME) specification for seamless/welded nickel-chromium-molybdenum-columbium alloy (UNS N06625) tubes.
- UNS N06625: Unified Numbering System designation for Inconel 625®, a nickel-based superalloy renowned for its strength and oxidation resistance at elevated temperatures.
Chemical Composition (ASME SB444 UNS N06625)
| Element | Percentage Composition |
|---|---|
| Nickel (Ni) | 58.0 min |
| Chromium (Cr) | 20.0 - 23.0 |
| Iron (Fe) | 5.0 max |
| Molybdenum (Mo) | 8.0 - 10.0 |
| Niobium (Nb) | 3.15 - 4.15 |
| Tantalum (Ta) | 0.40 - 0.70 |
| Carbon (C) | 0.10 max |
| Manganese (Mn) | 0.50 max |
| Silicon (Si) | 0.50 max |
| Phosphorus (P) | 0.015 max |
| Sulfur (S) | 0.015 max |
| Aluminum (Al) | 0.40 max |
| Titanium (Ti) | 0.40 max |
Mechanical Properties (Room Temperature)
| Property | Value |
|---|---|
| Tensile Strength | 120 ksi (827 MPa) |
| Yield Strength (0.2% offset) | 60 ksi (414 MPa) |
| Elongation (in 2 inches) | 30% |
| Hardness (Brinell) | ≤ 220 |
| Hardness (Rockwell B) | ≤ 95 |
| Modulus of Elasticity | 29.0 x 10^6 psi (200 GPa) |
| Poissons Ratio | 0.3 |
Extruded Fin Tube Technology
Fins are formed by extruding the base tube material through a specialized die, creating integral fins that maximize surface area. This design significantly enhances heat transfer efficiency between the internal fluid and external environment.
Industrial Applications
These tubes excel in aggressive environments including:
- Chemical Processing Plants
- Oil & Gas Refining
- Aerospace & Power Generation
- Marine Systems
- High-Temperature Exhaust Systems
Key advantages include resistance to chloride stress-corrosion cracking, pitting, oxidation, and carburization.
Typical Project Inquiry Example
| Parameter | Specification |
|---|---|
| Product | Extruded Finned Tubes SB-444 N06625 |
| Base Tube Material | SB-444 N06625 |
| Fin Material | Aluminum |
| Tube Length (mm) | 9710 |
| Fin Length (mm) | 9610 |
| Quantity (Pieces) | 248 |
| Base Tube O.D (mm) | 25.4 |
| Base Tube Thickness (mm) | 2.77 |
| Fin Height (mm) | 11 |
| Fin Thickness (mm) | 0.4 |
| Fin Pitch (mm) | 2.54 |
Why Choose ASME SB444 UNS N06625 Fin Tubes?
This alloy combination delivers unmatched performance in:
- Extreme temperature stability (cryogenic to 1800°F/982°C)
- Resistance to acid/alkali corrosion
- High mechanical strength retention
- Long-term durability in harsh operating conditions
Note: ASME SB444 covers nickel-chromium-molybdenum-columbium alloys (UNS N06625 and UNS N06852) and nickel-chromium-molybdenum-silicon alloy (UNS N06219) pipe and tube.