AWS Class ERCuAI-A2 MIG & TIG Welding Wire – Composition, Properties, and Uses
Welding is a crucial technique that joins two metals in various manufacturing processes. The success of the welding process depends on the type of alloy used, the welding technique, and other factors. AWS Class ERCuAI-A2 MIG & TIG is an alloy type that welding professionals often use. It has outstanding mechanical and physical properties making it suitable for numerous industrial applications. This blog post will provide an in-depth perspective on AWS Class ERCuAI-A2 MIG & TIG, including its composition, mechanical and physical properties, uses, corrosion resistance, and heat treatment.
What is AWS Class ERCuAI-A2 MIG & TIG?
AWS Class ERCuAI-A2 MIG & TIG is an arc welding electrode specifically designed to be used in welding copper alloy. The electrode uses a special alloy that meets the minimum requirements of American Welding Society (AWS) standards for copper alloys and provides good corrosion resistance in many environments. The electrodes perform well in MIG (Metal Inert Gas) and TIG (Tungsten Inert Gas) welding processes, making them suitable for various applications such as pipeline repair, pressure vessels or high-temperature construction projects. With the right technique, they can be used with minimal heat distortion or warping effects, so they are ideal for thinner materials and thick plates.
ERCuAI-A2 MIG & TIG Welding Wire Composition
AWS Class ERCuAI-A2 MIG & TIG welding wire is a copper alloy that contains nickel, iron, and aluminium. The presence of nickel contributes to the alloy’s strength, while the combination of iron and chromium enhances its resistance to corrosion. Aluminium further improves the alloy’s strength and facilitates good weldability. When you add these properties, AWS Class ERCuAI-A2 MIG & TIG emerges as a versatile and durable alloy ideal for various industrial applications. This special alloy contains Stainless Steel, Manganese, Silicon, Nickel and Aluminum, which combine to provide higher tensile strength.
Cu+Ag |
Al |
Fe |
Si |
Zn | Pb |
OET |
Bal |
8.5- |
0.5- |
0.10 |
0.02 | 0.02 |
0.50 |
11.0 |
1.5 |
max |
max | max |
max |
ERCuAI-A2 MIG & TIG Coated Wire Mechanical Properties
AWS Class ERCuAI-A2 MIG & TIG welding alloy features high tensile and yield strength, making it an excellent welding alloy. It has a good elongation percentage, showing that the alloy can withstand post-welding deformation. AWS Class ERCuAI-A2 MIG & TIG’s flexibility and toughness make it perfect for welding processes requiring strength and wear and tear resistance.
As required by AWS 5.7 |
Tensile Strength MPa (ksi) |
Yield Strength MPa (ksi) |
Elongation % |
AWS |
415 (60) min | Not Specified |
Not Specified |
Typical Results – As welded |
545 (79) | 240 (35) | 28 |
ERCuAI-A2 MIG & TIG Welding Wire Physical Properties
The physical attributes of AWS Class ERCuAI-A2 MIG & TIG electrode include a high melting point, density, and electrical conductivity. The alloy has a melting point of about 1090°C and a density of 8.73 gm/cm3. Regarding electrical conductivity, AWS Class ERCuAI-A2 MIG & TIG has about 8% IACS, making it an excellent candidate for electrically conductive applications.
ERCuAI-A2 MIG & TIG Coated Wire Trade Name
Class | UNS | Oxford Alloys |
ERCuAI-A2 | C61800 | Aluminum Bronze A-2 |
ERCuAI-A2 MIG & TIG Welding Wire Parameters
Diameter |
Process |
Volt | Amps |
Shielding Gas |
|
in | (mm) | ||||
.035 | 0.9 | GMAW | 20-26 | 100-200 |
100% Argon |
.045 | 1.2 | GMAW | 22-28 | 100-250 | |
1/16 | 1.6 | GMAW | 29-32 | 250-400 | |
1/16 | 1.6 | GTAW |
|
70-120 |
100% Argon |
3/32 | 2.4 | GTAW |
|
120-160 | |
1/8 | 3.2 | GTAW |
|
170-230 |
ERCuAI-A2 MIG & TIG Coated Wire Uses
AWS Class ERCuAI-A2 MIG & TIG wire is commonly used in welding applications that require high strength, good corrosion resistance, and good weldability. Its uses span various industrial sectors, including marine, automotive, aerospace, and construction. AWS Class ERCuAI-A2 MIG & TIG can weld cast iron, nickel-based alloys, and dissimilar metals.
ERCuAI-A2 MIG & TIG Welding Wire Corrosion Resistance
AWS Class ERCuAI-A2 MIG & TIG’s filler metal composition endows it with outstanding corrosion resistance, making it perfect for welding applications that involve corrosive environments. Its combination of nickel, iron, and chromium enables it to withstand pitting, crevice, and intergranular corrosion, which is common in marine and industrial settings. Moreover, AWS Class ERCuAI-A2 MIG & TIG’s aluminium content slows down the formation of intermetallic compounds.
ERCuAI-A2 MIG & TIG Coated Wire Heat Treatment
AWS Class ERCuAI-A2 MIG & TIG filler wire is a non-heat treatable alloy. Therefore, welding professionals should devise an appropriate welding technique that prevents the alloy from cracking or discolouration. Welding professionals can preheat the alloy to minimize thermal stress before and gradually cool it after welding.
Conclusion
In summary, AWS Class ERCuAI-A2 MIG & TIG is a copper alloy that welding professionals use in various industrial applications. Its nickel, iron, and aluminium content contribute to its excellent weldability, high strength, and corrosion resistance. AWS Class ERCuAI-A2 MIG & TIG has good mechanical and physical properties, making it an ideal choice for welding processes that require strength, flexibility, and toughness. Moreover, its uses are widespread across many industrial sectors, including marine, automotive, and aerospace. Professionals must follow appropriate welding techniques to avoid cracking and discolouration when welding this alloy, as the alloy is non-heat treatable.
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