Virami Steel Hub is a trusted manufacturer, supplier, stockist, and exporter of SS 321 Wires in Mumbai, India. We provide high-quality Stainless Steel 321 wires in various diameters, finishes, and specifications to serve industries such as aerospace, petrochemical, oil & gas, power generation, and heat treatment sectors.
Our SS 321 wires are supplied across India and exported globally to the USA, Europe, the Middle East, Africa, and Southeast Asia, ensuring compliance with international quality standards.
Stainless Steel 321 Wires are austenitic stainless steel wire products stabilized with titanium. Grade 321 is similar to 304 stainless steel but contains titanium as a stabilizing element.
The addition of titanium prevents chromium carbide precipitation during welding or exposure to high temperatures. This stabilization enhances resistance to intergranular corrosion, especially in high-temperature environments.
SS 321 wires are commonly used in applications where operating temperatures range between 425°C to 900°C.
Key Features of SS 321 Wires
These features make SS 321 wires particularly suitable for elevated temperature applications.
| Element | Composition (%) |
|---|---|
| Chromium (Cr) | 17.0 – 19.0 |
| Nickel (Ni) | 9.0 – 12.0 |
| Titanium (Ti) | 5xC min – 0.70 max |
| Carbon (C) | 0.08 max |
| Manganese (Mn) | 2.0 max |
| Silicon (Si) | 1.0 max |
| Phosphorus (P) | 0.045 max |
| Sulfur (S) | 0.03 max |
| Iron (Fe) | Balance |
Role of Key Elements
The titanium stabilization is the key differentiating factor between 321 and 304 stainless steel.
SS 321 wires offer reliable mechanical performance:
Cold working can increase tensile strength and hardness, depending on the required application.
These properties make SS 321 wires stable and reliable under elevated temperature conditions.
SS 321 provides excellent resistance to:
While it offers similar general corrosion resistance to 304 stainless steel, its superior resistance to sensitization makes it ideal for applications involving continuous heating or welding.
It is particularly suitable for high-temperature service environments such as exhaust systems, heat exchangers, and furnace components.
SS 321 cannot be hardened by heat treatment and is typically supplied in the annealed condition.
Annealing Process:
This process restores ductility and improves corrosion resistance after fabrication.
Stainless Steel 321 wires exhibit excellent weldability.
Titanium stabilization reduces the risk of intergranular corrosion in the heat-affected zone.
SS 321 has moderate machinability.
Recommendations:
It is slightly more difficult to machine than free-machining stainless steels but performs well with proper tooling.
SS 321 wires are manufactured according to international standards.
Standards:
Size Range:
Surface Finishes:
Custom sizes and finishes are available as per project specifications.
Due to their high-temperature stability, SS 321 wires are widely used in various industries.
Aerospace Industry
Petrochemical & Chemical Industry
Oil & Gas Industry
Power Generation
Automotive Industry
Its resistance to high temperatures and intergranular corrosion makes SS 321 a preferred choice in heat-intensive environments.
These benefits make SS 321 wires highly reliable for demanding industrial applications.
At Virami Steel Hub, all SS 321 wires undergo strict quality control procedures:
Mill Test Certificates (MTC) are provided as per ASTM and ASME standards. Third-party inspection can be arranged upon request.
To ensure safe storage and transportation, SS 321 wires are:
We ensure timely dispatch and reliable global shipping.
Our commitment to quality and customer satisfaction makes us a preferred supplier globally.
Stainless Steel 321 Wires are titanium-stabilized austenitic stainless steel products designed for high-temperature and welded applications. With excellent resistance to intergranular corrosion, strong mechanical properties, and superior oxidation resistance, SS 321 wires are widely used in aerospace, petrochemical, power generation, and industrial sectors.
Virami Steel Hub supplies certified SS 321 wires in various sizes and specifications, ensuring durability, reliability, and long-term performance in demanding high-temperature environments worldwide.
