309LT1-1 Flux Cored Welding Wire

309LT1-1 Stainless Steel Flux Cored Welding Wire for Dissimilar Metal and High-Temperature Applications

The 309LT1-1 flux cored welding wire is a rutile type, gas-shielded stainless steel FCAW wire engineered for all-position welding of stainless steels and dissimilar metal joints. Designed for demanding environments, this wire provides radiographic-quality welds, smooth bead formation, and reliable mechanical performance, making it ideal for power plants, petrochemical industries, and heat-resistant applications.

Manufactured in compliance with AWS A/SFA 5.22 309LT1-1, EN ISO 17633-A, and TS309LT1-1, the 309LT1-1 FCAW wire ensures consistent performance and long-term structural integrity.

309LT1-1 Welding Wire Classification & Standards

The 309LT1-1 flux cored welding wire is fully certified to international and Indian standards:

EN ISO 17633-A – T 23 12 LRC/M 1

TS classification TS309LT1-1

AWS A/SFA 5.22 – 309LT1-1

BIS approved

These certifications confirm the wire’s suitability for critical stainless steel and carbon steel joining applications, including high-temperature service and corrosive environments.

Typical Chemical Composition of 309LT1-1 Weld Metal

The undiluted weld metal chemistry of 309LT1-1 FCAW wire is optimized for corrosion resistance and high-temperature strength. Typical composition includes approximately 0.04% Carbon, 1.70% Manganese, 0.50% Silicon, 23% Chromium, and 13.50% Nickel.

This combination of elements provides excellent corrosion resistance, thermal stability, and metallurgical compatibility with stainless steel and carbon steel substrates.

Mechanical Properties of 309LT1-1 Flux Cored Welding Wire

The weld metal produced by 309LT1-1 welding wire exhibits outstanding mechanical performance in the as-welded condition. Typical ultimate tensile strength is around 580 MPa, with yield strength at 0.2% offset approximately 430 MPa. The weld metal demonstrates good elongation of 26% and impact toughness around 52 Joules, ensuring resistance to cracking and reliable structural integrity.

These properties make the wire ideal for heat exchangers, furnace parts, and dissimilar metal welds requiring both strength and ductility

Key Features of 309LT1-1 Flux Cored Welding Wire

All-position welding capability

Produces radiographic-quality weld deposits

Rutile type gas-shielded stainless steel flux cored wire

Smooth weld bead with easy slag removal

Suitable for single-pass and multi-pass welding

Low fume generation with minimal spatter with High deposition rate

These features make 309LT1-1 FCAW wire a reliable choice for high-temperature, dissimilar metal, and critical stainless steel welding applications.

Recommended Welding Parameters for 309LT1-1 FCAW Wire

The 309LT1-1 flux cored welding wire is available in 1.2 mm and 1.6 mm diameters. Recommended amperage ranges are 130 to 280 amperes for 1.2 mm wire and 200 to 360 amperes for 1.6 mm wire. Welding should be performed using DCEP (Electrode Positive).

This wire is compatible with CO₂ or Argon-CO₂ mixed shielding gases. When using mixed shielding gas, reducing the voltage by 1 to 2 volts ensures optimal arc stability, weld bead quality, and penetration.

Packing Details of 309LT1-1 Flux Cored Welding Wire

The wire is supplied in 15 kg vacuum-sealed packs, layer wound on durable plastic spools. Vacuum packaging protects the wire from moisture absorption, ensuring low hydrogen weld deposits, consistent feeding, and long shelf life.

Typical Applications of 309LT1-1 Welding Wire

The 309LT1-1 flux cored welding wire is widely used in:

Power plant equipment

Heat exchangers and furnace components

Stainless steel and carbon steel joining

High-temperature stainless steel structures

Dissimilar metal welding in petrochemical and refinery plants

Mechanical performance makes it ideal for critical industries.

Why Choose Our 309LT1-1 Flux Cored Welding Wire?

As a trusted stainless steel flux cored welding wire manufacturer, we ensure:

• Precise chemical control for corrosion resistance and high-temperature strength
  
  

• Compliance with AWS, EN ISO, and BIS standards
  
  

• Proven performance in petrochemical, power, and industrial applications
  
  

• Technical support from experienced welding engineers
  
  

Our 309LT1-1 FCAW wire is trusted by fabricators and EPC contractors for strength, durability, and ease of welding.

Key Features

• All position capability

• Radiographic quality weld

• Rutile type gas shielded FCW wire

• Easy slag removal, smooth weld bead

• Suitable for single and multi-pass welds

• Low fumes, Minimal spatters, High deposition rate

FLUX CORED WIRE

Bulk Supply & Technical Support for 309LT1-1 Welding Wire

For bulk supply, distributor inquiries, or welding procedure guidance for 309LT1-1 flux cored welding wire, our technical team is available to provide project-specific support and expert recommendations.