ThePipingMart Blog Welding Electrodes AWS Class ER330 MIG & TIG Welding Wire – Composition, Properties, and Uses

AWS Class ER330 MIG & TIG Welding Wire – Composition, Properties, and Uses

AWS Class ER330 MIG & TIG

AWS Class ER330 MIG & TIG is among the most popular welding wires in the manufacturing industry. It is a stainless steel welding wire that has gained widespread recognition due to its exceptional properties. AWS Class ER330 MIG & TIG is known for its high-quality welds, corrosion resistance and durability, making it an ideal choice for various applications. This blog post will discuss AWS Class ER330 MIG & TIG, composition, physical and mechanical properties, heat treatment, and uses.

What is AWS Class ER330 MIG & TIG?

AWS Class ER330 MIG & TIG is a special type of welding suitable for thin gauge material in the range of 0.005″ up to 1/2″ thick. This process involves running an electrical current through a wire feedstock fed into the weld puddle and then fusing two pieces of metal using a combination of heat, pressure, and filler material. The advantages to this type of welding are portability, speed, cost savings, and quality control in joining materials over other welding processes such as oxy-fuel cutting or arc welding. It can be used for sheet metal fabrication, stainless steel products manufacturing, car body repairs, pipeline/refinery building projects and even engine components assembly line production.

AWS Class ER330 MIG & TIG is a high-performance stainless steel welding wire that belongs to the austenitic family. It is a filler metal that is used mainly in the welding of stainless steel and, at times, nickel alloys. This welding wire is available in TIG (tungsten inert gas) and MIG (metal inert gas) forms. The MIG welding wire diameter varies from 0.030 to 0.045 inches, while the TIG wire diameter ranges from 0.035 to 0.125 inches.

ER330 MIG & TIG Welding Wire Composition

AWS Class ER330 MIG & TIG’s composition comprises a combination of nickel, chromium, and molybdenum alloys, making it ideal for use in high-temperature applications. This welding wire’s nickel content helps improve its flexibility, corrosion resistance, and toughness. The chromium content improves the wire’s resistance to scaling, while the molybdenum content makes it more resistant to chloride stress corrosion.

C Cr Ni Mo Mn Si P S Cu
0.18-0.25 15.0-17.0 34.0-37.0 0.75 1.0-2.5 0.30-0.65 0.03 0.03 0.75

ER330 MIG & TIG Coated Wire Physical Properties

Physical Properties of AWS Class ER330 MIG & TIG include a density of 7.98 g/cm3 and a melting point of 1425-1510°C. This welding wire has a tensile strength of 85,000 psi and yield strength of 40,000 psi. The elongation of AWS Class ER330 MIG & TIG is 37%. Its electrical conductivity is 1.25% compared to copper.

ER330 MIG & TIG Welding Wire Mechanical Properties

Mechanical properties of AWS Class ER330 MIG & TIG include exceptional toughness and high tensile strength. This welding wire has a good impact strength, and its elongation and yield strength make it ideal for welding applications that involve extensive deformation. AWS Class ER330 MIG & TIG’s mechanical properties ensure it can withstand high-stress environments, making it an ideal choice for welding high-pressure vessels, boilers, and containers.

Yield, kpsi: 56
Tensile Strength, kpsi: 84
Elongation%, min: 29

ER330 MIG & TIG Coated Wire Trade Names

Class UNS Oxford Alloys
ER330 N08331 Alloy 330

ER330 MIG & TIG Welding Wire Parameters

Diameter Process Volt  

Amps

GAS
in (mm)
.035  (1.6) GTAW 12-15 60-90 Argon 100%
 .045  (1.14) GTAW 13-16 80-110 Argon 100%
1/16” (1.6) GTAW 14-16 90-130 Argon 100%
 3/32”  (2.4) GTAW 15-20 120-175 Argon 100%
Diameter Process Volt  

Amps

GAS
in (mm)
 .035  (.9) GMAW 17-20 70-90 75% Argon, 25% Helium
 .045  (1.14) GMAW 18-22 75-160 75% Argon, 25% Helium

ER330 MIG & TIG Coated Wire Uses

AWS Class ER330 MIG & TIG’s uses include manufacturing, maintenance, and restoration of aircraft, boiler equipment, chemical and petrochemical plants, pulp and paper industries, nuclear power plants, and many other high-temperature applications. AWS Class ER330 MIG & TIG is best used in corrosive environments with temperatures ranging from 1400-2120°F.

ER330 MIG & TIG Welding Wire Heat Treatment

Heat treatment of AWS Class ER330 MIG & TIG involves solution annealing at temperatures ranging from 1850°F to 2100°F, followed by water quenching. This is done to maintain the wire’s mechanical properties. This welding wire also undergoes a second heat treatment called stabilizing at temperatures ranging from 900°F to 1150°F, which helps to reduce the risk of intergranular corrosion.

ER330 MIG & TIG Coated Wire Corrosion Resistance

The corrosion resistance of AWS Class ER330 MIG & TIG is one of its best properties. It has the highest pitting and crevice corrosion resistance compared to other austenitic stainless steel welding wires. It is also resistant to general rust and stress corrosion cracking due to its high nickel content.

Conclusion

AWS Class ER330 MIG & TIG is an excellent choice for welding stainless steel and high-temperature applications. Its unique properties make it ideal for the aerospace, chemical, and nuclear power industries. It’s exceptional corrosion resistance and ductility set it apart from other welding wires in the market. Understanding its properties and applications shows that AWS Class ER330 MIG & TIG is a valuable tool for the manufacturing industry.

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