Sandvik 19.9.LT Flux Cored Electrode
The Sandvik 19.9.LT is a flux cored electrode designed for welding low-carbon 18% Cr/8% Ni austenitic stainless steels, such as ASTM 304 and 304L. This electrode is classified under AWS A5.22 as E308LT0-1/T0-4.
Key Features
- Diameter and Packaging: Available in a 0.90mm diameter, supplied in 15kg spools.
- Shielding Gas Compatibility: Suitable for use with 100% CO₂ or a mixture of 75-80% Argon with the balance CO₂.
- Welding Positions: Designed for flat and horizontal welding positions.
- Arc Characteristics: Provides a stable arc with low spatter, ensuring smooth bead appearance and easy slag removal.
- Corrosion Resistance: The low carbon content minimizes carbide precipitation, enhancing resistance to intergranular corrosion.
Applications
The Sandvik 19.9.LT electrode is ideal for welding applications in industries such as chemical processing, food and beverage, and pharmaceuticals, where corrosion resistance and weld quality are critical.
Mechanical Properties
When used with 100% CO₂ shielding gas, the typical mechanical properties are:
- Tensile Strength: Approximately 550 MPa (80 ksi)
- Yield Strength: Approximately 392 MPa (57 ksi)
- Elongation: Approximately 44%
These properties ensure robust and durable welds suitable for various demanding applications.
Welding Parameters
For optimal performance, the following parameters are recommended:
- Wire Feed Speed: 5.8-14.4 m/min (225-570 in/min)
- Current: 170-300 A
- Voltage: 25-30 V
- Electrode Extension: 12.5-25.4 mm (1/2-1 in.)
These settings contribute to efficient welding operations with high deposit efficiency.
Standards Compliance
The Sandvik 19.9.LT electrode meets the following standards:
- AWS A5.22: E308LT0-1/T0-4
- ISO 17633-A: T 19 9 L R C 3/T 19 9 L R M 3
Compliance with these standards ensures reliability and quality in welding applications.
In summary, the Sandvik 19.9.LT flux cored electrode offers excellent weldability, corrosion resistance, and mechanical properties, making it a preferred choice for welding austenitic stainless steels in various industrial applications.
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