Welding is essential in many industries, and using the right welding materials for the job is crucial. One such material is AWS Class ER630, used in MIG (Metal Inert Gas) and TIG (Tungsten Inert Gas) welding techniques. This welding material is highly regarded for its excellent mechanical and physical properties and corrosion resistance capabilities, making it ideal for many applications. This blog post explores everything you need about AWS Class ER630 MIG & TIG welding.
What is AWS Class ER630 MIG & TIG?
AWS Class ER630 is a chromium-nickel stainless steel filler metal used for welding many types of austenitic and ferritic stainless steel. The MIG (metal inert gas) process uses an electric arc established between the filler material and the base metal. In contrast, the TIG (tungsten inert gas) process uses a non-consumable tungsten electrode to establish an arc. Combining both processes allows high-quality welds at much lower temperatures than traditional welding methods. AWS Class ER630 provides excellent tensile strength with good oxidation resistance, making it ideal for use in multiple applications such as dairy tanks, exhaust manifolds, pressure vessels, heat exchanger tubes and food processing equipment.
ER630 MIG & TIG Welding Wire Composition
AWS Class ER630 MIG & TIG welding wire are austenitic stainless nickel, chromium, and molybdenum steels. It also has a minimum amount of copper, phosphorus, and silicon in its composition. The chemical composition contributes to its excellent corrosion resistance and mechanical properties, making it a reliable welding material for various applications.
| C | Cr | Ni | Mo | Mn | Si | P | S | Cu | Element | Amount |
| 0.05 | 16.00-16.75 | 4.5-5.0 | 0.75 | 0.25-0.75 | 0.75 | 0.03 | 0.03 | 3.25-4.00 | Nb | 0.15-0.30 |
ER630 MIG & TIG Coated Wire Physical Properties
AWS Class ER630 MIG & TIG welding electrode offers unique physical properties such as high strength, toughness, and fatigue resistance. This welding material also has exceptional thermal conductivity, which helps mitigate heat input during welding.
ER630 MIG & TIG Welding Wire Mechanical Properties
The welding alloy material offers high strength and hardness, making it ideal for applications requiring high strength and performance. Its mechanical properties make AWS Class ER630 MIG & TIG welding appropriate for heavy equipment, such as aerospace, petrochemicals, and nuclear plants.
| Yield, kpsi: | 135 |
| Tensile Strength, kpsi: | 150 |
| Elongation%, min: | 10 |
ER630 MIG & TIG Filler Wire & Rods Trade Names
| Class | UNS | Oxford Alloys |
| ER630 | S17480 | Alloy 630 |
ER630 MIG & TIG Coated Wire Parameters
| Diameter | Process | Volt |
Amps |
GAS | |
| in | (mm) | ||||
| .035 | (0.9) | GMAW | 26-29 | 160-210 | 98% Argon/2% Oxygen or 97% Argon/3% Oxygen |
| .045 | (1.14) | GMAW | 28-32 | 180-250 | 98% Argon/2% Oxygen or 97% Argon/3% Oxygen |
| 1/16” | (1.6) | GMAW | 29-33 | 200-280 | 98% Argon/2% Oxygen or 97% Argon/3% Oxygen |
ER630 MIG & TIG Welding Wire Uses
AWS Class ER630 MIG & TIG filler metal is ideal for various applications. For instance, it is commonly used in aerospace manufacturing, where parts require high strength, fatigue resistance, and corrosion resistance properties. Its corrosion resistance properties make AWS Class ER630 MIG & TIG welding an excellent choice for offshore oil drilling and the marine industry. It is also used in nuclear plants for applications requiring high strength and corrosion resistance properties.
ER630 MIG & TIG Coated Wire Heat Treatment
AWS Class ER630 MIG & TIG filler wire can be heat treated to improve strength and hardness. However, it should be noted that heat treatment alters the material’s microstructure, which may affect its mechanical and physical properties. Proper heat treatment procedures should be followed to ensure the welding material’s integrity.
ER630 MIG & TIG Welding Wire Corrosion Resistant
AWS Class ER630 MIG & TIG welding offers excellent corrosion resistance capabilities. Its corrosion resistance is due to the nickel and molybdenum in its composition. This makes it ideal for applications where the welding material will be exposed to harsh environments or corrosive substances.
Conclusion
In conclusion, AWS Class ER630 MIG & TIG welding is an excellent choice for industries requiring high-performance welding materials. Its excellent mechanical and physical properties, corrosion resistance capabilities, and diversity of applications make it an outstanding choice. Nonetheless, proper procedures should be followed during heat treatment to ensure reliability. Therefore, for high-performance welding needing excellent mechanical properties and corrosion resistance, AWS Class ER630 is a welding material of choice.
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.
