Virami Steel Hub is a trusted manufacturer, supplier, stockist, and exporter of Alloy Steel F90 Pipes & Tubes in Mumbai, India. We provide high-quality F90 alloy steel pipes and tubes to clients across India and export globally to the USA, Europe, the Middle East, Canada, Australia, and Southeast Asia.
Alloy Steel F90 is a high-strength super duplex stainless steel grade (UNS S32760) known for its excellent mechanical strength, superior corrosion resistance, and outstanding performance in aggressive environments. Due to its enhanced resistance to pitting, crevice corrosion, and stress corrosion cracking, Alloy Steel F90 pipes and tubes are widely used in offshore, marine, oil & gas, petrochemical, and power generation industries.
Alloy Steel F90 Pipes & Tubes are hollow cylindrical products manufactured from Super Duplex Stainless Steel F90 (UNS S32760). This grade combines the benefits of both austenitic and ferritic stainless steels, offering high strength and excellent resistance to corrosion.
F90 is designed specifically for demanding environments such as seawater exposure, chloride-rich conditions, and high-pressure systems. It contains chromium, molybdenum, and nitrogen, which significantly improve corrosion resistance and mechanical performance.
Due to its duplex microstructure, Alloy Steel F90 provides approximately twice the yield strength of standard austenitic stainless steels like 304 and 316.
Key Features of Alloy Steel F90 Pipes & Tubes
These properties make F90 an ideal material for highly aggressive industrial environments.
These properties make F90 an ideal material for highly aggressive industrial environments.
| Element | Composition (%) |
|---|---|
| Chromium (Cr) | 24 – 26 |
| Nickel (Ni) | 6 – 8 |
| Molybdenum (Mo) | 3 – 4 |
| Nitrogen (N) | 0.20 – 0.30 |
| Copper (Cu) | 0.5 – 1.0 |
| Carbon (C) | 0.03 max |
| Manganese (Mn) | 1.0 max |
| Silicon (Si) | 1.0 max |
| Iron (Fe) | Balance |
Role of Key Elements:
The carefully balanced composition ensures durability in chloride-rich and marine environments.
Alloy Steel F90 offers outstanding mechanical strength:
These high-strength characteristics allow for thinner wall thickness, reducing overall weight and cost in structural and piping systems.
F90 pipes and tubes maintain structural stability even under extreme pressure and temperature fluctuations.
Alloy Steel F90 provides exceptional resistance to:
Its high PREN (Pitting Resistance Equivalent Number) ensures long-term durability in offshore and marine applications. The duplex structure enhances resistance to localized corrosion and erosion under high flow conditions.
F90 is typically supplied in solution annealed condition.
Solution Annealing Process:
Proper heat treatment is critical to maintain the duplex microstructure and corrosion resistance.
Due to its high strength, Alloy Steel F90 requires careful machining.
Advanced machining practices ensure accurate dimensions and surface finish.
Alloy Steel F90 has good weldability with appropriate procedures.
Proper welding ensures corrosion resistance and mechanical strength are retained.
Alloy Steel F90 pipes and tubes are supplied according to international standards.
Surface finishes include annealed, pickled, polished, and passivated finish.
Alloy Steel F90 pipes and tubes are widely used in demanding industries:
Its superior corrosion resistance and high strength make it ideal for critical offshore and chemical environments.
These benefits make F90 a reliable material choice for aggressive industrial applications.
All Alloy Steel F90 pipes and tubes undergo strict quality control procedures:
Mill Test Certificates (MTC) are provided as per ASTM / ASME standards. Third-party inspection is available upon request.
Alloy Steel F90 Pipes & Tubes (UNS S32760) are high-performance super duplex stainless steel products designed for extreme environments requiring high strength and superior corrosion resistance. Their excellent resistance to chloride-induced corrosion, stress corrosion cracking, and seawater exposure makes them ideal for offshore, marine, oil & gas, and chemical industries.
Virami Steel Hub supplies certified Alloy Steel F90 pipes and tubes in various sizes and specifications worldwide, ensuring durability, reliability, and long-term performance in the most demanding applications.
