ER309-Stainless Steel Wire ‌

Technical Compliance‌: AWS 5.14 Class ER309 / ASME SFA 5.14 Class ER309

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ER309 Stainless Steel Welding Wire – Superior Performance for Dissimilar Metal Joining‌

‌Product Overview‌

ER309 is a high-performance austenitic stainless steel welding wire, expertly formulated for Gas Metal Arc Welding (GMAW/MIG) and Gas Tungsten Arc Welding (GTAW/TIG) processes. With its carefully balanced ferrite content in the austenitic matrix, ER309 delivers exceptional weldability, superior crack resistance, and outstanding weld integrity. This wire is specifically designed for joining dissimilar metals, including low-alloy steels, heat-resistant steels, corrosion-resistant steels, and clad steel surfaces, making it indispensable for critical industrial applications.

‌Key Features & Benefits‌

• ‌Optimized Ferrite-Austenite Balance‌: Enhances crack resistance, reduces hot cracking, and ensures durable welds under thermal stress.

• ‌Superior Weldability‌: Produces smooth, spatter-free beads with minimal defects, ideal for intricate welding tasks.

• ‌Excellent Mechanical Properties‌: Maintains high strength and ductility, even in challenging environments.

• ‌Broad Material Compatibility‌: Ideal for welding dissimilar combinations such as stainless steel to carbon steel, heat-resistant alloys, and clad surfaces.

• ‌No Post-Weld Heat Treatment Required‌: Simplifies fabrication, reduces costs, and accelerates project timelines.

• ‌Corrosion Resistance‌: Provides reliable protection against oxidation and aggressive media, extending component lifespan.

‌Applications‌

• ‌Dissimilar Metal Welding‌: Joining low-alloy steels to stainless steels, heat-resistant alloys, and clad materials.

• ‌Heat Exchangers & Boilers‌: Fabricating components exposed to high temperatures and corrosive environments.

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

• ‌Power Generation‌: Turbine components, superheaters, and pressure vessels in thermal and nuclear plants.

• ‌Industrial Repairs‌: Restoring worn or damaged parts in manufacturing and maintenance operations.

‌Technical Specifications‌

• ‌Standards Compliance‌: Meets AWS A5.18 ER309, EN 440 S309, and ISO 14341-A-G 23 12 2 specifications.

• ‌Wire Diameters‌: Available in 0.8mm, 1.0mm, 1.2mm, and 1.6mm for precision and productivity.

• ‌Packaging‌: Supplied in 2kg spools, 5kg spools, or 15kg reels to suit operational needs.

‌Important Usage Guidelines‌

1. ‌Shielding Gas Requirements‌:

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

• Maintain gas flow rate at ‌≥20 L/min‌ for wire diameters of 1.2mm and 1.6mm.

2. ‌Environmental Conditions‌:

• Ensure welding areas are ‌shielded from drafts‌ (e.g., using windbreaks or enclosures) to prevent gas disruption and defects.

3. ‌Surface Preparation‌:

• Thoroughly clean welding surfaces of ‌oil, moisture, grease, and contaminants‌ using appropriate solvents or mechanical methods.

‌Why Choose ER309?‌

• ‌Proven Reliability‌: Trusted for consistent performance in dissimilar metal welding applications.

• ‌Cost-Efficient‌: Reduces rework and maintenance with high-quality, crack-free welds.

• ‌Operational Flexibility‌: Works with standard MIG/MAG and TIG equipment, simplifying integration into existing workflows.

‌Ideal for industries demanding robust dissimilar metal joining, corrosion resistance, and operational efficiency, ER309 empowers manufacturers to achieve superior results with confidence.

   Guaranteed Value