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AWS Class ERCu MIG & TIG Welding Wire – Composition, Properties, and Uses

AWS Class ERCu MIG & TIG

Knowing the different types of filler metals available for welding is essential. One popular option is AWS Class ERCu MIG & TIG. This type of welding wire is known for its excellent electrical and thermal conductivity, making it an ideal choice for welding copper. This article explores everything you need to know about AWS Class ERCu MIG & TIG: its composition, mechanical and physical properties, uses, and more.

What is AWS Class ERCu MIG & TIG Welding Wire?

AWS Class ERCu MIG & TIG is a copper filler metal with a high percentage of phosphorus, which is why it is commonly called “phosphor bronze.” Its composition is typically around 8% to 10% tin and 0.03% to 0.35% phosphorus, with the rest being copper. This combination creates an alloy that can be used for welding copper, brass, and other copper alloys.

ERCu MIG & TIG Welding Wire Composition

Sn Mn Si P Al Pb Other
1.0 0.50 0.50 0.15 0.01 0.02 0.50

ERCu MIG & TIG Welding Wire Mechanical properties

Regarding mechanical properties, AWS Class ERCu MIG & TIG filler wire is known for its high strength and corrosion resistance. It has a tensile strength of around 60,000 to 70,000 psi and a yield strength of around 45,000 to 50,000 psi. Its elongation rate is typically around 10% to 20%, making it a reliable choice for welding applications that require strength and flexibility.

Tensile Strength, kpsi: 8
Yield Strength, kpsi: 29
Elongation in 2” (%): 29

ERCu MIG & TIG Welding Wire Physical properties

In terms of physical properties, AWS Class ERCu MIG & TIG is known for its high thermal conductivity. This means that heat can be transferred quickly and efficiently throughout the material. This is especially beneficial when welding copper, as it can help prevent warping and other structural issues. AWS Class ERCu MIG & TIG also has excellent electrical conductivity, making it an ideal choice for welding electrical components.

ERCu MIG & TIG Welding Wire Trade Name

Class UNS Oxford Alloys
ERCu C61800 Deox Copper

ERCu MIG & TIG Welding Wire Parameters

Diameter Process Volt  
Amps
GAS
in (mm)
 1/16  (1.6) GTAW 0 70-120 100% Helium or 100% Argon 40-55 CFH
 3/32  (2.4) GTAW 0 120-160 100% Helium or 100% Argon 40-55 CFH
 1/8  (3.2) GTAW 0 170-230 100% Helium or 100% Argon 40-55 CFH

ERCu MIG & TIG Welding Wire Uses

So, what are the typical uses for AWS Class ERCu MIG & TIG? This filler metal is commonly used for welding alloy copper pipes, tubes, and other components in plumbing, HVAC, and electrical systems. It can also be used for welding brass and other copper alloys and brazing applications. Its high strength and corrosion resistance make it an excellent choice for applications that require durability and long-term performance.

ERCu MIG & TIG Welding Wire Corrosion Resistance

Regarding corrosion resistance, AWS Class ERCu MIG & TIG is known for its excellent ability to resist oxidation and other forms of corrosion. This makes it a popular choice for welding components exposed to harsh environments, such as saltwater or chemicals.

ERCu MIG & TIG Welding Wire Heat Treatment

Finally, let’s talk about heat treatment. AWS Class ERCu MIG & TIG typically does not require heat treatment after welding electrode. However, if the material is subjected to high heat during welding, it may become annealed and softer. In these cases, reheating and treating the material may be necessary to restore its strength and hardness.

Conclusion:

In conclusion, AWS Class ERCu MIG & TIG coated electrode is an excellent choice for welding copper, brass, and other copper alloys. Its composition, mechanical and physical properties, and corrosion resistance make it a reliable option for plumbing, HVAC, and electrical systems. Its high strength and durability ensure that it will provide long-term performance, even in harsh environments. Whether you’re a professional welder or a DIY enthusiast, AWS Class ERCu MIG & TIG is worth considering for your next project.

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