Description
Compatible Base Materials
Sifalumin No. 16 (4047) is a specialized aluminum TIG filler designed for specific aluminum joining applications, making it ideal for:
- Aluminum Alloy Series: Cast alloys like 319, 355, 356, wrought alloys in the 6000 series
- Dissimilar Aluminum Joining: Joining different aluminum grades together
- Brazing Applications: Works excellent for aluminum brazing due to lower melting point
- Automotive Components: Engine blocks, heat exchangers, transmission cases
- Heat Transfer Equipment: Radiators, condensers, evaporators, cooling plates
- Casting Repair: Repairing defects or cracks in aluminum castings
- HVAC Applications: Air conditioning components and refrigeration systems
Standards & Specifications
- EN ISO 18273: S Al 4047 (AlSi12)
- AWS A5.10: ER4047
Typical Mechanical Properties
- Tensile Strength: 180-240 MPa
- Yield Strength: 80-90 MPa
- Elongation: >3%
- Shear Strength: 85-95 MPa
Key Features & Benefits
✅ High Silicon Content (12%): Provides exceptional fluidity and lower melting point than other aluminum fillers
✅ Superior Flow Characteristics: Excellent for filling gaps and creating leak-tight joints
✅ Reduced Hot Cracking: Lower susceptibility to hot cracking compared to lower silicon content fillers
✅ Excellent for Dissimilar Joining: Ideal for joining different aluminum grades together
✅ Lower Melting Point: Melts at approximately 575°C, creating a wider working temperature range
Recommended Shielding Gases
- TIG Welding: EN ISO 14175 – I1 (Pure Argon)
- For Thicker Materials:
- I1 + He25-75 (Argon + 25-75% Helium) – Increased heat input for thicker sections
- Flow Rate: 12-15 l/min recommended for optimal protection
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.
