Description
Compatible Base Materials
309L-16 is a versatile stainless steel electrode designed for joining dissimilar metals, making it ideal for applications such as:
- Dissimilar Metal Joining: Stainless steel to carbon steel, low alloy steel to stainless steel
- Buffer Layers: First layer applications before hard-facing or overlay welding
- Austenitic Stainless Steels: AISI 304, 304L, 321, 347 to carbon or low alloy steels
- Structural Fabrication: Mixed-metal frameworks, equipment, and vessels
- High Temperature Applications: Furnace parts, heat exchangers, and boiler components
- Chemical Processing Equipment: Tanks, vessels, and piping systems requiring corrosion resistance
Standards & Specifications
- EN ISO 3581-A: E 23 12 L R
- AWS A5.4: E309L-16
Typical Mechanical Properties
- Tensile Strength: 550-650 MPa
- Yield Strength: 380 MPa
- Elongation: >30%
- Impact Strength: >70 J at -20°C
Key Features & Benefits
✅ Low Carbon Content (L Grade): Minimizes carbide precipitation and reduces risk of intergranular corrosion
✅ Excellent Slag Removal: Self-releasing slag for multi-pass welding with minimal cleaning between passes
✅ All-Position Capability: Performs well in flat, horizontal, vertical, and overhead positions
✅ Superior Crack Resistance: Specially formulated to resist hot cracking in dissimilar metal joints
✅ Stable Arc Performance: Consistent arc with minimal spatter even at lower amperage settings
Recommended Welding Parameters
- Diameter 2.5mm: 60-90A DC+
- Diameter 3.2mm: 80-120A DC+
- Diameter 4.0mm: 110-150A DC+
- Suitable for AC operation with appropriate amperage adjustments
