Virami Steel Hub is a trusted manufacturer, supplier, stockist, and exporter of premium-quality Stainless Steel 304 Filler Wire in Mumbai, India. We provide high-performance welding filler wires designed to deliver excellent corrosion resistance, mechanical strength, and consistent welding performance across a wide range of industrial applications.
Our SS 304 filler wires are manufactured using high-grade stainless steel and advanced production techniques to ensure precise chemical composition, excellent weldability, and dimensional accuracy. These filler wires are widely used in welding applications where corrosion resistance, structural strength, and durability are essential.
With a strong distribution network and efficient logistics system, Virami Steel Hub supplies Stainless Steel 304 Filler Wires across India and exports globally to countries in the USA, Europe, the Middle East, Africa, and Southeast Asia. Our products comply with international quality standards, ensuring reliable performance and long service life in demanding industrial environments.
Stainless Steel 304 Filler Wire, commonly designated as ER304 or UNS S30400, is an austenitic stainless steel welding wire widely used for joining stainless steel components that require excellent corrosion resistance and mechanical strength.
This filler wire contains a balanced combination of chromium and nickel, which provides strong resistance to oxidation, rust, and chemical corrosion. The alloy composition ensures stable arc performance and high-quality weld deposits during welding operations.
SS 304 filler wire is typically used for welding 304, 304L, and similar austenitic stainless steel grades, making it one of the most commonly used filler materials in stainless steel fabrication. It is suitable for welding applications in industries such as chemical processing, food processing, pharmaceuticals, construction, marine, and petrochemicals.
Due to its excellent weldability, corrosion resistance, and mechanical performance, Stainless Steel 304 filler wire is widely preferred for both structural and fabrication welding applications.
Key Features of Stainless Steel 304 Filler Wire
Stainless Steel 304 filler wires offer several important performance advantages that make them suitable for industrial welding applications.
These characteristics make SS 304 filler wire a reliable choice for welding stainless steel components exposed to moisture, chemicals, and moderate temperature conditions.
The typical chemical composition of Stainless Steel 304 filler wire includes the following elements:
| Element | Composition (%) |
|---|---|
| Chromium (Cr) | 18 – 20% |
| Nickel (Ni) | 8 – 10.5% |
| Carbon (C) | 0.08% maximum |
| Manganese (Mn) | 2% maximum |
| Silicon (Si) | 1% maximum |
| Phosphorus (P) | 0.045% maximum |
| Sulfur (S) | 0.03% maximum |
| Iron (Fe) | Balance |
Role of Key Alloying Elements
Chromium (Cr)
Chromium provides excellent resistance to corrosion and oxidation by forming a protective passive layer on the metal surface.
Nickel (Ni)
Nickel enhances the ductility, toughness, and corrosion resistance of the alloy, making it suitable for various industrial environments.
Carbon (C)
Carbon is maintained at controlled levels to ensure improved weldability and to minimize carbide precipitation.
Manganese (Mn)
Manganese contributes to strength and improves the hot working properties of the alloy.
The combination of these alloying elements ensures excellent weld integrity, corrosion resistance, and long-term durability.
Stainless Steel 304 filler wires offer strong mechanical performance and reliability in welded structures.
These mechanical properties ensure that weld joints maintain strength, flexibility, and resistance to mechanical stress during service conditions.
Stainless Steel 304 filler wires possess stable physical characteristics that make them suitable for a variety of welding environments.
These properties contribute to thermal stability, dimensional accuracy, and consistent welding performance during fabrication processes.
One of the most important advantages of Stainless Steel 304 filler wire is its excellent resistance to corrosion in a wide range of environments.
It provides reliable resistance to:
Although SS 304 filler wire performs well in most environments, it is generally recommended for applications where exposure to chlorides and highly corrosive chemicals is moderate.
Due to its corrosion resistance, Stainless Steel 304 filler wire is widely used in chemical plants, food processing units, pharmaceutical facilities, and marine applications.
Stainless Steel 304 filler wire is typically used in its standard condition during welding operations. However, the base material being welded may undergo solution annealing to restore corrosion resistance and improve ductility.
Solution Annealing Process
This process helps eliminate carbide precipitation and ensures the material retains its corrosion resistance and mechanical properties.
Stainless Steel 304 filler wire offers excellent weldability and is compatible with several welding processes.
Common welding methods include:
Welding Recommendations
Following these guidelines ensures strong, defect-free weld joints with excellent corrosion resistance.
Compared to carbon steel, Stainless Steel 304 has moderate machinability due to its toughness and work-hardening characteristics.
Recommended machining practices include:
Proper machining practices help achieve accurate dimensions and improved surface finish.
Virami Steel Hub supplies Stainless Steel 304 Filler Wires according to internationally recognized standards.
Available Sizes
Surface Finish
Custom sizes and packaging options are available based on client specifications and industrial requirements.
Stainless Steel 304 filler wire is widely used across several industries due to its corrosion resistance and strong welding performance.
Food Processing Industry
Chemical Processing Industry
Pharmaceutical Industry
Construction Industry
Marine Industry
These applications demonstrate the versatility and reliability of SS 304 filler wire in industrial fabrication and welding projects.
At Virami Steel Hub, every batch of Stainless Steel 304 filler wire undergoes strict quality testing procedures to ensure compliance with international standards.
Quality checks include:
We provide Mill Test Certificates (MTC) according to ASTM and AWS standards, and third-party inspection services are available upon request.
Virami Steel Hub ensures secure packaging and efficient delivery for all orders.
Our logistics network ensures safe transportation and timely delivery across domestic and international markets.
Stainless Steel 304 Filler Wire is a widely used welding material known for its excellent corrosion resistance, strong weldability, and reliable mechanical performance. It is ideal for welding stainless steel components used in industries such as chemical processing, food processing, pharmaceuticals, construction, and marine applications.
Virami Steel Hub supplies high-quality SS 304 filler wires manufactured according to international standards, ensuring superior welding performance, durability, and long service life in demanding industrial environments.
