This grade is a chromium-nickel-based alloy with the following chemical composition, according to the ASME standard:

• The high carbon content (C: 0.04-0.10%) in TP304H contributes to improved strength under high temperatures.
• Chromium and nickel provide excellent corrosion and oxidation resistance.

• Bright Annealed Finish

  • Bright annealing is a specialized heat treatment process performed in a controlled atmosphere to create a luminous, reflective surface finish.
  • It enhances the corrosion resistance of the tube and minimizes oxidation.

• Seamless Tubing

  • Seamless manufacturing ensures uniformity, avoiding weak spots like welded seams, for superior mechanical properties and pressure resistance.
  • It meets stringent cleanliness and tolerance standards critical for high-temperature and corrosive environments.

• High-Temperature Strength

  • TP304H is specifically designed for elevated temperature applications due to its excellent creep resistance and strength retention at high temperatures.
  • Commonly used in environments up to 650°C (1202°F).

• Corrosion Resistance

  • Suitable for use in mildly corrosive environments, such as oxidizing acids and chloride-containing applications.
  • Resistant to general corrosion, pitting, and stress corrosion cracking.

• Applications
  TP304H finds extensive use in the following sectors:

  • Power Plants: Boiler and heat exchanger tubes.
  • Petrochemical Industry: Refinery units, catalytic systems.
  • Chemical Processing: Pipe transport for acidic chemicals under extreme heat.
  • Oil & Gas: High-pressure, high-temperature piping systems.
  • Food & Pharmaceutical Industry: Due to its sanitary surface and corrosion properties.

• Enhanced Corrosion Resistance: The smooth and reflective finish reduces the risk of surface contaminants.
• Improved Aesthetic Appeal: The reflective surface is clean and uniform, suitable for visible installations.
• Ease of Cleaning: Particularly useful in sanitary and pharmaceutical applications.
• Longer Service Life: Bright annealing significantly reduces contamination risks and enhances the tube’s resistance to oxidation and pitting.