ASTM A269 TP316L Stainless Steel Seamless Tube For Heat Exchanger and Condenser
ASTM A269 TP316L Stainless Steel Seamless Tube For Heat Exchanger and Condenser
ASTM A269 TP316L seamless tubes are high-quality stainless steel tubes designed for use in applications requiring excellent corrosion resistance, high temperature resistance, and hygiene. These tubes are manufactured according to the ASTM A269 standard, which specifies the requirements for seamless and welded austenitic stainless steel tubes for general corrosion-resistant and high-temperature service.
Key Features of ASTM A269 TP316L Seamless Tubes:
1. Corrosion Resistance:
- Excellent resistance to pitting, crevice corrosion, and stress corrosion cracking.
- Performs well in acidic, chloride, and high-temperature environments.
2. High Temperature Resistance:
- Maintains mechanical strength and corrosion resistance at elevated temperatures.
3. Hygienic Properties:
- Smooth, non-porous surface prevents bacterial growth and contamination, making it suitable for sanitary applications.
4. Seamless Construction:
- Seamless tubes have no welded joints, ensuring uniformity, strength, and reliability.
- Ideal for high-pressure and high-temperature applications.
5. Weldability:
- Excellent weldability due to low carbon content, reducing the risk of carbide precipitation and ensuring strong, durable welds.
6.Versatility:
- Available in a wide range of sizes, wall thicknesses, and lengths to meet various application requirements.
ASTM A269 TP316L is a low-carbon austenitic stainless steel with the following chemical composition (by weight percentage):
| Element | Composition (%) |
| Carbon (C) | ≤ 0.03 |
| 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) | 2.00 - 3.00 |
| Nitrogen (N) | ≤ 0.10 |
| Iron (Fe) | Balance |
Mechanical Properties:
ASTM A269 TP316L seamless tubes exhibit the following mechanical properties:
| Property | Value |
| Tensile Strength | ≥ 485 MPa (70,000 psi) |
| Yield Strength | ≥ 170 MPa (25,000 psi) |
| Elongation | ≥ 40% (in 2 inches or 50 mm) |
| Hardness | ≤ 95 HRB (Rockwell B Hardness) |
Key Characteristics of ASTM A269 TP316L:
1. Low Carbon Content (≤ 0.03%):
Prevents carbide precipitation during welding, ensuring excellent weldability and corrosion resistance in welded structures.
2. High Chromium and Nickel Content:
Provides excellent corrosion resistance, especially in acidic and chloride environments.
3. Molybdenum Addition:
Enhances resistance to pitting and crevice corrosion, making it suitable for harsh environments.
4. Austenitic Structure:
Offers good ductility, toughness, and formability.
Applications of ASTM A269 TP316L:
- Heat exchangers and condensers
- Pharmaceutical and biotechnology equipment
- Food and beverage processing
- Chemical and petrochemical industries
- Medical and surgical instruments
- Semiconductor and electronics manufacturing
- Aerospace and marine systems
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