Description
Compatible Base Materials
ER309L is a versatile stainless steel TIG filler rod 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 cladding
- Austenitic Stainless Steels: AISI 304, 304L, 321, 347 to carbon steels
- Structural Fabrication: Mixed-metal frameworks, equipment, and vessels
- Food Processing Equipment: Tanks, vessels, and piping systems requiring corrosion resistance
- Chemical Industry: Equipment requiring transition joints between different metals
Standards & Specifications
- EN ISO 14343-A: G 23 12 L
- AWS A5.9: ER309L
Typical Mechanical Properties
- Tensile Strength: 590-690 MPa
- Yield Strength: 400 MPa
- Elongation: >35%
- Impact Strength: >80 J at -20°C
Key Features & Benefits
✅ Low Carbon Content (L Grade): Minimizes carbide precipitation and reduces risk of intergranular corrosion
✅ High Chromium/Nickel Content: Provides excellent crack resistance in dissimilar metal joints
✅ Excellent Ferrite Control: Optimized ferrite content to balance strength and corrosion resistance
✅ Superior Corrosion Resistance: Maintains integrity in moderately corrosive environments
✅ Versatile Application: Performs well in all positions with excellent arc stability
Recommended Shielding Gases
- TIG Welding: EN ISO 14175 – I1 (Pure Argon)
- For Thicker Materials:
- I1 + H5 (Argon + 5% Hydrogen) – Enhanced fluidity and penetration
- I1 + He25 (Argon + 25% Helium) – Increased heat input for thicker sections
Please note the rod length in the description above.
Arc Electrode rods (rough finish coating) are 300mm in length.
Tig filler rods (non arc) are sold in two formats;
- Packs of (x10, x20, x30, x40, x50, x100) are cut down from trade 1m lengths to 333mm. This is to reduce postage costs.
- 1kg, 2.5kg, 5kg are 1m, 1000mm original length.
Our prices include free shipping to the standard Royal Mail boundary postcodes (includes IOM, highlands, remote islands)!
Sorry we can’t afford the same to those outside this region.
