Features
- General-purpose filler alloy widely used in welding and brazing aluminum applications.
- Silicon additions provide improved fluidity and wetting action for superior weld appearance.
- Excellent resistance to weld cracking, producing bright and nearly smut-free welds.
- Non-heat treatable alloy; not recommended for anodizing.
- Meets SFA/AWS A5.10 ER4043 and EN ISO 18273 S Al 4043 (AlSi5) classifications.
- Approved to CE EN 13479, CWB ER4043, DB 61.039.05, JIS Z 3232, and VdTÜV 12187 standards.
- Alloy type: AlSi.
- Compatible with shielding gases I1 and I3 per EN ISO 14175.
- Typical tensile properties (as welded): 55 MPa yield strength, 124 MPa tensile strength, 18 % elongation.
- Optimized composition: 0.01 % Mn, 5.00 % Si, balance Al, 0.02 % Cu, 0.01 % Ti, 0.01 % Zn, 0.14 % Fe.
Specifications
EAN Code | 7330129105939 |
Weight | 7 kg |
Classifications | SFA/AWS A5.10: ER4043; EN ISO 18273: S Al 4043 (AlSi5); JIS Z 3232: A4043 |
Approvals | CE: EN 13479; CWB: ER4043; DB: 61.039.05; JIS Z 3232; VdTÜV: 12187 |
Alloy Type | AlSi |
Yield Strength (As Welded) | 55 MPa |
Tensile Strength (As Welded) | 124 MPa |
Elongation (As Welded) | 18% |
Typical Wire Composition % | Mn: 0.01, Si: 5.00, Al: Rem, Cu: 0.02, Ti: 0.01, Zn: 0.01, Fe: 0.14 |
Last Modified | 28/06/2025, 08:31:12 |
Shielding Gas | I1, I3 (EN ISO 14175) |
Typical Tensile Properties (As Welded) | Yield Strength 55 MPa; Tensile Strength 124 MPa; Elongation 18 % |
Typical Wire Composition (%) | Mn 0.01; Si 5.00; Al balance; Cu 0.02; Ti 0.01; Zn 0.01; Fe 0.14 |
Recommended Welding Parameters (1.2 mm) | Current 125–260 A; Voltage 20–29 V |
Description
4043 is one of the most widely used welding and brazing alloys and can be classed as
A general purpose filler alloy
The silicon addition results in improved fluidity (wetting action), making the alloy the preferred
The alloy is not sensitive to weld cracking and produces bright, almost smut-free welds
Not recommended for anodising
Non-heat treatable
Welding current: DC(+)
Documentation
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