ASTM A249 TP316 Tube (Pipe) Supplier and Exporter in India

ASTM A249 TP316 Tube (Pipe) is a welded austenitic stainless steel tube manufactured for boilers, superheaters, heat exchangers, and condensers. Grade TP316 contains molybdenum (2.0–3.0%), which significantly enhances resistance to pitting and crevice corrosion in chloride-containing environments compared to TP304.

Produced in accordance with ASTM A249 specifications, TP316 tubes are supplied in the welded and heat-treated condition to meet required mechanical and metallurgical properties. The addition of molybdenum improves corrosion resistance in marine, chemical, and process industries where exposure to aggressive media is common. Although commonly referred to as “pipe” in commercial terminology, ASTM A249 technically covers welded stainless steel tubes.

Difference Between TP316 and TP304

  • TP304: No molybdenum content
  • TP316: Contains 2.0–3.0% molybdenum for improved chloride resistance

The presence of molybdenum in TP316 provides superior resistance to pitting and crevice corrosion, especially in marine and chemical processing environments where chlorides are present.

Key Features of ASTM A249 TP316

  • Enhanced Corrosion Resistance
    Molybdenum addition improves resistance to chlorides, acidic media, and localized corrosion such as pitting and crevice attack.
  • Excellent High Temperature Performance
    Maintains strength and oxidation resistance in elevated temperature service conditions.
  • Good Weldability and Fabrication
    Suitable for standard welding and forming operations without compromising corrosion resistance.
  • Reliable Mechanical Strength
    Provides dependable tensile and yield strength for pressure-containing and heat transfer applications.
  • ASTM A249 Compliance
    Manufactured in accordance with ASTM A249 requirements for welded austenitic stainless steel boiler and heat exchanger tubes.

Chemical Composition

  • Carbon (C): ≤ 0.08%
  • 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): 2.0 – 3.0%
  • Iron (Fe): Balance

Mechanical Properties (Annealed Condition – Minimum)

  • Tensile Strength: ≥ 515 MPa
  • Yield Strength (0.2% Proof): ≥ 205 MPa
  • Elongation: ≥ 35%

Applications of ASTM A249 TP316 Tube

  • Heat Exchangers & Condensers
    Efficient handling of corrosive process fluids in chemical and marine environments.
  • Evaporators
    Reliable performance in systems processing aggressive or chloride-containing media.
  • Industrial Boilers & Superheaters
    Suitable for elevated temperature and pressure applications.
  • Marine Equipment
    Excellent resistance to seawater and saline conditions.
  • Chemical & Pharmaceutical Processing
    Used in fabricated systems handling corrosive chemicals and clean-process fluids.

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Faq's

A: They contain molybdenum, which enhances resistance against chlorides, making them suitable for chemical and marine industries.

A: Yes, the company exports to India, Mexico, Russia, Brazil, Argentina, Colombia, Ecuador, and across the globe.

A: Yes, all pipes are supplied with ASTM/ASME certifications to meet international import/export requirements.

A: They are manufactured in multiple schedules and diameters for industrial use.
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