ASTM A312 TP347H HFW Fin Tube Mechanical Strength

Tensile Strength Minimum Yield Strength: Approximately 205 MPa (30,000 psi) Minimum Ultimate Tensile Strength: Approximately 515 MPa (75,000 psi)
Yield Strength Typical Yield Strength: Around 310 MPa (45,000 psi)
Elongation Elongation: Minimum of 30% in 50 mm (2 inches) gauge length, indicating good ductility.
Hardness Brinell Hardness: Typically around 200 HB (Brinell scale), varying based on processing and heat treatment.

FAQ: ASTM A312 TP347H High-Frequency Welded Fin Tubes

• What is ASTM A312 TP347H?

ASTM A312 TP347H is a specification for austenitic stainless steel pipes suitable for high-temperature service and corrosive environments. The "TP" stands for "Tube Product," indicating it is manufactured as a tube.

• What are fin tubes?

Fin tubes are tubes with extended surfaces (fins) designed to enhance heat transfer. The fins increase the surface area available for heat exchange, making them more efficient than plain tubes.

• What applications are suitable for TP347H fin tubes?

​These tubes are commonly used in:Heat exchangers, Condensers, Power generation systems, Chemical processing equipment...

• What are the advantages of using TP347H fin tubes?

High Temperature Resistance: Suitable for elevated temperatures. Corrosion Resistance: Excellent for harsh environments. Improved Heat Transfer: Fins enhance thermal efficiency.

• What is the welding method used?

​TP347H fin tubes are typically manufactured using high-frequency electric resistance welding (HF-ERW), which ensures strong and reliable welds.

• Can these tubes be customized?

Yes, TP347H fin tubes can be customized in terms of dimensions, wall thickness, and fin design to meet specific application requirements.

• What is the typical lifespan of TP347H fin tubes?

With proper maintenance and under appropriate operating conditions, TP347H fin tubes can have a long service life, often exceeding 20 years.

• Are there any special maintenance requirements?

While these tubes are designed to be durable, regular inspections and cleaning may be necessary to prevent fouling and maintain optimal performance.

• How do I choose the right fin tube for my application?

Consider factors such as operating temperature, pressure, fluid type, and required heat transfer efficiency. Consulting with a materials engineer can also help in making the right choice.