Domestic Market
Superon 347Si / 347LSi is supplied as a precision layer-wound solid MIG welding wire. It conforms to ER 347Si and ER 347LSi classifications and is suitable for use with argon-based shielding gas mixtures such as argon with oxygen or argon with carbon dioxide. The deposited weld metal offers excellent resistance to corrosive media and performs reliably in stainless steel structures operating at elevated service temperatures.
Key Features and Benefits
347Si/347LSi is designed to deliver reliable welding performance in stainless steel applications operating in corrosive environments.
- Niobium Stabilised Weld Metal: Deposits a 19 chromium and 9 nickel weld metal stabilised with niobium to resist intergranular corrosion.
- Smooth Weld Bead Appearance: The silicon content helps produce a smooth bead shape and good wetting during welding.
- High Resistance To Corrosive Media: Performs well at service temperatures where corrosion resistance is important.
- Stable Arc Performance: Provides steady arc characteristics when used with recommended shielding gases.
- Wide Application Range: Suitable for the fabrication of pipes, plates, and pressure vessels.
- Consistent Mechanical Properties: Maintains strength, ductility, and impact resistance in welded joints.
These features make 347Si suitable for both shop fabrication and site welding applications.
Specifications
The following table outlines the key mechanical properties and welding conditions of 347Si / 347LSi.
|
Product Name |
AWS SFA Classification |
Yield Strength N mm² |
Tensile Strength N mm² |
Elongation A5 |
Impact Energy ISO V at 20 C |
Welding Conditions |
|---|---|---|---|---|---|---|
|
SUPERMIG 347Si 347LSi |
AWS A5.9 ER 347Si 347LSi EN ISO 14343 A G 19 9 Nb Si |
≥ 400 |
≥ 550 |
≥ 30 |
≥ 65 |
DC Positive |
Properties
Superon 347Si / 347LSi welding consumables are designed to deliver durable, corrosion-resistant, and high-quality welds for stainless steel components exposed to heat and harsh conditions.
- Austenitic Stainless Steel Weld Metal: Suitable for welding components exposed to corrosive environments and elevated temperatures.
- Niobium-Stabilised: Prevents chromium carbide precipitation, reducing the risk of intergranular corrosion in welded joints.
- Low Carbon Content (347LSi): Enhances corrosion resistance, especially in welded and heat-exposed sections.
- Excellent Mechanical Strength: Maintains tensile strength, toughness, and ductility for components under stress or thermal expansion.
- Smooth Weld Beads: Silicon content improves weld pool fluidity, resulting in uniform, clean, and attractive welds.
- Stable Arc Performance: Provides reliable welding with minimal spatter, suitable for both MIG and TIG processes.
- High-Temperature Resistance: Ideal for applications in chemical, power generation, and marine industries where elevated service temperatures are common.
These properties make 347Si / 347LSi a reliable choice for the fabrication, repair, and maintenance of high-performance stainless steel components.
Related Products
We offer a range of complementary welding consumables to meet diverse stainless steel fabrication and repair needs, ensuring reliable performance across industrial applications.
- 347 and 347H Stainless Steel MIG Wires: Ideal for high-temperature service and corrosive environments, offering excellent resistance to intergranular corrosion and long-term durability.
- 321 Stainless Steel Welding Wires: Used for applications requiring stabilisation against chromium carbide precipitation, suitable for heat-resistant and high-temperature service components.
- 316 and 316L Stainless Steel Welding Consumables: Provide superior corrosion resistance in chemical, marine, and industrial environments, making them suitable for demanding applications.
- 309 Series Stainless Steel Welding Wires: Designed for joining dissimilar metals and buffer layer applications, offering strong, crack-resistant welds for mixed steel assemblies.
These related products complement 347Si / 347LSi consumables, providing a complete solution for stainless steel welding, surfacing, and maintenance across a variety of industrial and fabrication applications.
