AWS Class ER 4047 is a versatile and widely used material in welding. If you are still getting familiar with AWS Class ER 4047 and its properties, you may be wondering what it is, how it is composed, and its uses. This blog post will thoroughly examine these questions and provide all the information you need about AWS Class ER 4047.
What is AWS Class ER 4047?
AWS Class ER 4047 is an aluminium-silicon filler alloy used in welding. It is often chosen for its high conductivity, low shrinkage, and good fluidity. One of the main benefits of ER 4047 is that it is one of the few aluminium filler alloys that do not require a post-weld heat treatment to avoid cracking. This feature makes it a popular and cost-effective option.
ER 4047 Welding Wire Composition
AWS Class ER 4047 alloy is composed of 11 to 13 per cent silicon and less than 1 per cent magnesium, iron, and copper. The alloy’s primary element is aluminium, which is the remaining percentage. These elements work together to provide excellent corrosion resistance and conductivity properties.
ER 4047 Coated Wire Mechanical Properties
AWS Class ER 4047 welding wire has impressive mechanical properties, including a yield strength of 30 ksi, elongation of 15 per cent, and tensile strength of 60 ksi. This material also has high cracking and thermal fatigue resistance, making it ideal for applications that experience thermal cycling.
| Conductivity: | 41% IACS (-0) |
| Tensile Strength, kpsi: | 27 |
| Color: | Gray-Black |
ER 4047 Welding Wire Physical Properties
AWS Class ER 4047 electrode has a density of 0.097 lb/in³ and a melting temperature of 1070°F, which makes it a relatively easy alloy to work within the welding process.
| Class | UNS |
| ER 4047 | A94043 |
ER 4047 Coated Wire Parameters
| Diameter | Process | Volt |
Amps |
GAS | |
| in | (mm) | ||||
| .030 | (.8) | GMAW | 15-24 | 60-175 | Argon (cfh) |
| .035 | (.9) | GMAW | 15-27 | 70-185 | Argon (cfh) |
| 3/64” | (1.2 ) | GMAW | 20-29 | 125-260 | Argon (cfh) |
| 1/16” | (1.6) | GMAW | 24-30 | 170-300 | Argon (cfh) |
| 3/32” | (2.4) | GMAW | 26-31 | 275-400 | Argon (cfh) |
ER 4047 Welding Wire Uses
AWS Class ER 4047 welding electrode is often used to manufacture heat exchangers, air conditioning, and refrigeration systems. The alloy’s high thermal conductivity and corrosion resistance make it an excellent candidate for these applications.
ER 4047 Coated Wire Corrosion Resistance
AWS Class ER 4047’s filler metal silicon content provides excellent corrosion resistance, another essential factor when choosing an alloy for welding applications. It is compatible with other aluminium alloys, ensuring a strong and long-lasting bond.
ER 4047 Welding Wire Heat Treatment
One of the benefits of AWS Class ER 4047 filler wire is that it does not require post-weld heat treatment to avoid cracking. Its low shrinkage and fluidity reduce the risk of distortion, making it an ideal material for welding thin aluminium sheets, for example.
Conclusion
AWS Class ER 4047 is a versatile and widely used filler alloy with high conductivity, low shrinkage, and good fluidity. Its impressive mechanical and physical properties and its corrosion resistance make it an excellent candidate for applications such as heat exchangers, air conditioning, and refrigeration systems. As a cost-effective option that does not require post-weld heat treatment, it is a popular choice for manufacturers and welders. This blog post has provided valuable insights into AWS Class ER 4047 and helped you understand why it is preferred in the welding industry.
Meet Heer, a dynamic and driven writer learning tricks of her trade in the metal industry. With a background in Digital Marketing, Heer brings a unique perspective to her writing, sharing valuable insights. Apart from blogging she like reading and hiking.
