
Aluminium welding rod are used to join two aluminium alloys together with a welding method mostly with tig welding the most common grades are EAL 1100, 4043 and 4047. joining two aluminium alloys, aluminium welding rod is needed because these alloys have high thermal conductivity which is nothing but aluminium alloys transfers heat quickly or in other word catches heat quickly. in this article we will compare aluminium welding rod grades AL 1100 and 4047 mechanical properties, density, chemical composition, and thermal properties.
Types Of Aluminum Filler Rod And Welding Consumables For Tig Welding
| Filler Rod | Equivalent |
|---|---|
| 2319 | UNS A92319 |
| 4145 | UNS A94145 |
| 5356 | UNS A95356 |
| 5554 | UNS A95554 |
| 5556 | UNS A95556 |
| 5654 | UNS A95657 |
| 4043 | UNS A94043 |
| 4943 | UNS R56320 |
Low Temperature Aluminum Welding Rods Sizes And Specification
| EAL 1100 | EAL 4043 | EAL 4047 | |
|---|---|---|---|
| AWS/ASME SFA – 5.3 | E1100 | E4043 | E4047 |
| EN ISO 18273 | E Al 1080 A(Al 99.8) | E Al 4043 (AlSi 5) | E Al 4047 (AlSi 12) |
| TS EN ISO 18273 | E Al 1080 A(Al 99.8) | E Al 4043 (AlSi 5) | E Al 4047 (AlSi 12) |
| TS 9604 | EL-Al99.5 | EL-AlSi5 | EL-AlSi12 |
| DIN M. No. | 3.0286 | 3.2245 | 3.2585 |
ER4043
ER5356
UTPA 65
UTP 1M
UTP 612
Mechanical Properties Of Aluminium Welding Rod
| AL 1100 | AL 4047 | |
|---|---|---|
| Brinell Hardness | 23 | |
| Elastic Modulus | 69 GPa (10 x 106 psi) | 72 GPa (10 x 106 psi) |
| Elongation at Break | 32% | 3.40% |
| Fatigue Strength | 35 MPa (5.0 x 103 psi) | 45 MPa (6.6 x 10 3 psi) |
| Poisson’s Ratio | 0.33 | 0.33 |
| Shear Modulus | 26 GPa (3.8 x 106 psi) | 27 GPa (3.9 x 106 psi) |
| Shear Strength | 61 MPa (8.8 x 103 psi) | 69 MPa (10 x 103 psi) |

Aluminium Welding Rod Tensile Strength
| AL 1100 | AL 4047 | |
|---|---|---|
| Tensile Strength | 29 MPa (4.2 x 103 psi) | 64 MPa (9.2 x 103 psi) |
Chemical Composition Of Aluminium Welding Rod
| AL 1100 | AL 4047 | |
|---|---|---|
| Aluminum (Al) | 99 to 99.95 | 85.3 to 89 |
| Silicon (Si) | 99 to 99.95 | 11 to 13 |
| Iron (Fe) | 0 to 1.0 | 0 to 0.8 |
| Copper (Cu) | 0.050 to 0.2 | 0 to 0.3 |
| Zinc (Zn) | 0 to 0.1 | 0 to 0.2 |
| Manganese (Mn) | 0 to 0.050 | 0 to 0.15 |
| Other | 0 to 0.15 | 0 to 0.15 |
| Magnesium (Mg) | – | 0 to 0.1 |
Density Of Aluminium Welding Rod

| AL 1100 | AL 4047 | |
|---|---|---|
| Density | 2.7 g/cm3 (170 lb/ft3) | 2.5 g/cm3 (160 lb/ft3) |
Aluminium Welding Rod Thermal Properties
| AL 1100 | AL 4047 | |
|---|---|---|
| Latent Heat of Fusion | 400 J/g | 570 J/g |
| Melting Onset | 640 °C (1190 °F) | 580 °C (1070 °F) |
| Melting Completion | 660 °C (1210 °F) | 580 °C (1080 °F) |
| Specific Heat Capacity | 900 J/kg-K (0.22 BTU/lb-°F) | 900 J/kg-K (0.22 BTU/lb-°F) |
| Thermal Conductivity | 220 W/m-K (130 BTU/h-ft-°F) | 130 W/m-K (77 BTU/h-ft-°F) |
| Thermal Expansion | 24 µm/m-K | 21 µm/m-K |
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