ER347L-Stainless Steel Wire ‌

Technical Compliance‌: AWS 5.14 Class ER347L / ASME SFA 5.14 Class ER347L

Product Overview

ER347L is a premium low-carbon niobium-stabilized austenitic stainless steel welding wire, specifically engineered for joining low carbon 18Cr-9Ni-Ti base metals. This advanced filler metal combines optimized ferrite content in its austenitic matrix with strategic niobium addition, delivering exceptional weld integrity, superior crack resistance, and outstanding protection against intergranular corrosion.

Key Features & Benefits

• Niobium Stabilization: Strategic niobium (Nb) addition effectively prevents intergranular corrosion by forming stable carbides, eliminating susceptibility to carbide precipitation during welding.

• Ultra-Low Carbon Content: Carbon content below 0.03% minimizes carbide formation, ensuring long-term structural integrity in demanding applications.

• Optimal Ferrite-Austenite Balance: Carefully balanced ferrite content within the austenitic structure ensures superior weld integrity and exceptional resistance to hot cracking and microfissuring.

• Excellent Low-Temperature Impact Toughness: Maintains remarkable mechanical properties and ductility even in cryogenic conditions, making it ideal for low-temperature pressure vessels.

• Enhanced Corrosion Resistance: Provides excellent protection against various corrosive media, maintaining performance in harsh chemical environments.

• Superior Weldability: Produces smooth, spatter-free beads with minimal defects and easy slag removal.

Technical Specifications

• Standards Compliance: Meets AWS A5.18 ER347L specifications and relevant international welding standards.

• Chemical Composition:

• Carbon: ≤0.03%

• Chromium: 18-20%

• Nickel: 9-11%

• Niobium: ≥8×C%

• Other elements within specified ranges

• Available Diameters: 0.8mm, 1.0mm, 1.2mm, and 1.6mm to accommodate various application requirements.

Applications

• Pressure Vessels: Specifically designed for applications requiring both excellent low-temperature impact properties and superior corrosion resistance.

• Chemical Processing Equipment: Tanks, reactors, and piping systems handling corrosive substances.

• High-Temperature Applications: Components exposed to temperatures up to 800°C in oxidizing and carburizing atmospheres.

• Power Generation: Boilers, superheaters, and high-temperature piping systems.

Important Usage Guidelines

1. Shielding Gas Requirements:

• Use CO₂ purity of 99.98% or higher to ensure weld integrity and prevent defects.

2. Environmental Conditions:

• Provide adequate wind shielding to prevent gas dispersal and ensure optimal weld quality.

3. Surface Preparation:

• Throughly remove all oil, grease, moisture, and contaminants before welding.

Why Choose ER347L?

ER347L combines advanced material science with practical welding advantages. The niobium stabilization provides superior intergranular corrosion resistance compared to unstabilized grades. Its low-temperature toughness makes it particularly suitable for cryogenic and industrial applications where reliability is critical.

   Guaranteed Value