81T-1 Flux Cored Welding Wire

High Strength 81T-1 Flux Cored Welding Wire for High Tensile Steel Applications

The 81T-1 flux cored welding wire is a rutile type, gas-shielded FCAW wire developed for all-position welding of high tensile carbon and low-alloy steels. Designed for demanding fabrication environments, this wire delivers radiographic-quality welds, excellent mechanical strength, and smooth, uniform bead appearance.

Manufactured in accordance with AWS A/SFA 5.20 E81T-1M, EN ISO 17632, and IS 15769, the 81T-1 FCAW wire is ideal for structural and industrial applications where strength up to 600 MPa is required.

81T-1 Welding Wire Classification & Standards

The 81T-1 flux cored welding wire complies with multiple international and Indian standards, ensuring consistent performance and global acceptance:

EN ISO 17632 A – T 556 R C/M 2

EN ISO classification T481T1-1CJ

IS 15769 – ET581RC-1

AWS A/SFA 5.20 – E81T-1M

These classifications confirm the wire’s suitability for critical high-strength structural welding applications.

BIS approved

Typical Chemical Composition of 81T-1 Weld Metal

The undiluted weld metal chemistry of 81T-1 FCAW wire is precisely controlled to achieve high strength and toughness. Typical composition includes approximately 0.07% Carbon, 1.50% Manganese, and 0.50% Silicon. This balanced chemistry ensures stable arc characteristics, good penetration, controlled slag formation, and superior mechanical performance.

Mechanical Properties of 81T-1 Flux Cored Welding Wire

In the as-welded condition, 81T-1 welding wire produces weld metal with a typical ultimate tensile strength of around 610 MPa, making it suitable for welding high tensile steels with strength up to 600 MPa.

The weld metal also exhibits strong yield strength at 0.2% offset, good elongation, and reliable impact toughness, supporting long-term structural integrity under dynamic and heavy service conditions.

Key Features of 81T-1 Flux Cored Welding Wire

All-position welding capability

Produces radiographic-quality weld deposits

Rutile type gas-shielded flux cored welding wire

Smooth, uniform weld bead appearance

Easy slag removal with minimal post-weld cleaning

Low fume generation and minimal spatter

High deposition rate for improved productivity

Suitable for high-quality single-pass and multi-pass welds

Help fabricators achieve better weld quality and reduce rework

Recommended Welding Parameters for 81T-1 FCAW Wire

The 81T-1 flux cored welding wire is available in 1.2 mm and 1.6 mm diameters. For 1.2 mm wire, the recommended amperage range is approximately 140 to 310 amperes, while for 1.6 mm wire, it is 220 to 400 amperes. Welding should be performed using DCEP (Electrode Positive).

This wire is suitable for use with CO₂ or mixed shielding gases. When welding with mixed shielding gas, reducing the voltage by 1 to 2 volts is recommended to achieve optimal arc stability and bead shape.

Packing Details of 81T-1 Flux Cored Welding Wire

The wire is supplied in 15 kg vacuum-sealed packs, layer wound on high-strength plastic spools. Vacuum packing protects the wire from moisture absorption, ensuring stable feeding, consistent welding performance, and extended shelf life.

Typical Applications of 81T-1 Welding Wire

The 81T-1 flux cored welding wire is widely used in:

General and high tensile carbon steel fabrication

Storage tanks and structural steel fabrication

Chemical plant machinery and industrial equipment

Bridges, towers, cranes, and heavy engineering works

Shipbuilding, hull fabrication, and marine structures

Construction equipment, farm machinery, and rolling stock

Why Choose Our 81T-1 Flux Cored Welding Wire?

As an established flux cored welding wire manufacturer, we ensure:

• Strict quality control across all production stages
  
  

• Compliance with recognized national and international standards
  
  

• Proven performance in heavy and high-strength fabrication
  
  

• Technical support from experienced welding professionals
  
  

Our 81T-1 FCAW wire is trusted by fabricators, EPC contractors, and OEMs for its strength, consistency, and ease of use.

Key Features

• All position capability

• Radiographic quality weld

• Rutile type gas shielded FCW wire

• Easy slag removal, smooth weld bead

• Suitable for high quality multi-pass welds

• Low fumes, minimal spatter with high deposition rate

FLUX CORED WIRE

Bulk Supply & Technical Support for 81T-1 Welding Wire

For bulk supply, distributor enquiries, or welding procedure guidance related to 81T-1 flux cored welding wire, our technical team is available to support your project-specific requirements.