Products Description
What is Super Ferritic Stainless Steel Tube (UNS-S44660)?
Super Ferritic Stainless Steel Tube (UNS-S44660) is a type of stainless steel that contains high levels of chromium (26-30%) and low levels of nickel (less than 1%). And produce in ASTM A268 standard. This combination of elements provides the alloy with excellent corrosion resistance, especially in high-temperature and chloride-rich environments.
UNS-S44660 is a super ferritic stainless steel that has a low carbon content and is stabilized with titanium, which improves its resistance to intergranular corrosion. The alloy is commonly used in applications where heat resistance and corrosion resistance are required, such as in power plants, waste incineration plants, and heat exchangers.
Compared to other types of stainless steel, UNS-S44660 has a lower cost, higher thermal conductivity, and better resistance to chloride-induced stress corrosion cracking. However, it may have lower mechanical strength and toughness compared to other stainless steel alloys.
Super Ferritic Stainless Steel Tube (UNS-S44660) is typically manufactured using seamless or welded tubes, and it is available in various sizes and thicknesses. The tubes can be used in a wide range of temperatures, from cryogenic to high-temperature applications, and they have excellent weldability and formability.
Super Ferritic Stainless Steel Tube (UNS-S44660) Chemical Composition:
Super Ferritic Stainless Steel Tube (UNS-S44660) typically contains the following chemical composition:
|
Element |
Minimum |
Maximum |
|
Carbon (C) |
0.03% |
- |
|
Chromium (Cr) |
26.00% |
30.00% |
|
Manganese (Mn) |
- |
1.50% |
|
Silicon (Si) |
- |
1.00% |
|
Nickel (Ni) |
- |
0.50% |
|
Phosphorus (P) |
- |
0.04% |
|
Sulfur (S) |
- |
0.03% |
|
Molybdenum (Mo) |
- |
0.75% |
|
Nitrogen (N) |
- |
0.10% |
|
Titanium (Ti) |
0.20% |
0.60% |
Super Ferritic Stainless Steel Tube (UNS-S44660) Physical Properties:
The physical properties of Super Ferritic Stainless Steel Tube (UNS-S44660) include:
|
Property |
Value |
Unit |
|
Density |
7.7 |
g/cm³ |
|
Melting point |
1420-1465 |
°C |
|
Specific heat capacity |
0.46 |
J/g°C |
|
Thermal conductivity |
22 |
W/m°C |
|
Electrical resistivity |
0.7 |
μΩm |
|
Elastic modulus |
200 |
GPa |
|
Poissons ratio |
0.3 |
- |
Super Ferritic Stainless Steel Tube (UNS-S44660) Advantages:
Super Ferritic Stainless Steel Tube (UNS-S44660) has several advantages, including:
1. Excellent corrosion resistance in high-temperature and chloride-rich environments.
2. Lower cost compared to other types of stainless steel alloys.
3. Good weldability and formability.
4. Better resistance to chloride-induced stress corrosion cracking compared to other stainless steel alloys.
5. Higher thermal conductivity compared to other stainless steel alloys.
6. Good strength and toughness at high temperatures.
Super Ferritic Stainless Steel Tube (UNS-S44660) Usages:
Super Ferritic Stainless Steel Tube (UNS-S44660) is used in various applications, including:
1. Heat exchangers for power plants, waste incineration plants, and other high-temperature environments.
2. Gas and oil pipelines where high resistance to chloride-induced stress corrosion cracking is required.
3. Process equipment for chemical and petrochemical industries.
4. Marine and seawater applications where resistance to corrosion is essential.
5. Heat recovery systems where high thermal conductivity is beneficial.
6. Automotive exhaust systems.
