ASTM A249 TP321 WLD Heat Exchanger Tube, for Heat Transfer
Heat Exchanger Tubes made from ASTM A249 TP321 are a preferred choice for various industrial heat transfer applications due to their excellent corrosion resistance, high-temperature strength, and durability.
Material Description:
ASTM A249 TP321 is a stainless steel alloy that belongs to the 300-series (austenitic stainless steel). It is stabilized with titanium (Ti), which improves its resistance to intergranular corrosion, particularly in high-temperature environments. This stabilization makes TP321 ideal for welded applications and heat exchanger systems.
Key Features:
1. High-Temperature Resistance:
TP321 can withstand temperatures up to 870°C (1600°F), making it suitable for high-pressure and high-temperature operations.
2. Corrosion Resistance:
Excellent resistance to oxidation, stress corrosion cracking, and intergranular corrosion.
3. Good Weldability:
The titanium stabilization minimizes carbide precipitation during welding, avoiding corrosion at weld joints.
4. Durability:
High strength and resistance to thermal fatigue ensure a long service life.
Advantages of ASTM A249 TP321 Tubes
Corrosion Resistance:
· High resistance to intergranular corrosion, even after welding, due to titanium stabilization.
· Excellent performance in both oxidizing and reducing environments.
Thermal Strength:
· Maintains mechanical integrity at elevated temperatures.
· Resists scaling in high-temperature operations.
Longevity and Reliability:
· Durable in harsh conditions, reducing maintenance and downtime.
· Welded construction ensures high structural integrity.
Versatility:
· Suitable for both corrosive and high-temperature environments, offering flexibility across industries.
Chemical Composition:
Grade | C | Cr | Ni | Ti |
ASME SA249 TP321 | Max 0.08 | 17.0–19.0 | 9.0–12.0 | ≥ 5 × (C% + N%) to 0.7 |
Mechanical Properties:
Grade | Yield Strength | Tensile Strength | Elongation |
ASME SA249 TP321 | Min 205 MPa (30 ksi) | Min 515 MPa (75 ksi) | Min 35% |
Applications of ASTM A249 TP321 Heat Exchanger Tubes
1. Industrial Sectors:
· Petrochemical and Chemical Industries: Used in heat exchangers, condensers, and reboilers for transferring heat in corrosive environments.
· Power Generation: Boiler tubes and economizers in thermal and nuclear power plants.
· Food and Beverage Processing: Safe for heat transfer in food-grade systems due to its non-reactive properties.
· Aerospace and Automotive: Suitable for high-temperature exhaust and heat recovery systems.
2. Heat Exchanger Types:
· Shell and tube heat exchangers.
· Air-cooled heat exchangers.
· Condensers and evaporators.