1. Filler Metals:
* Steel:
* Mild steel: Most common filler metal, used for general purpose welding.
* Low-carbon steel: Similar to mild steel but with lower carbon content, used for applications requiring good ductility.
* High-carbon steel: Higher carbon content for increased strength and hardness.
* Stainless steel: Corrosion-resistant, used for applications requiring durability in harsh environments.
* Aluminum: Light weight, high electrical conductivity, used for aerospace and automotive applications.
* Nickel alloys: High corrosion resistance, used in high-temperature and chemical processing applications.
* Copper alloys: High electrical and thermal conductivity, used for electrical and plumbing applications.
* Titanium alloys: High strength-to-weight ratio, used in aerospace and medical applications.
* Bronze: An alloy of copper and tin, used for decorative and structural applications.
* Brass: An alloy of copper and zinc, used for plumbing and decorative applications.
2. Shielding Gases:
* Argon (Ar): Inert gas, commonly used for shielding during TIG and MIG welding, especially for aluminum and stainless steel.
* Helium (He): Inert gas, used for TIG welding, provides faster welding speeds and deeper penetration compared to Argon.
* Carbon dioxide (CO2): Active gas, used for MIG welding, provides better weld penetration and arc stability.
* Mixed gases: Combination of different gases, used for specific applications, such as Argon/CO2 or Helium/Argon mixtures.
3. Flux:
* Solid fluxes: Powdered or granular, used in stick welding and submerged arc welding.
* Liquid fluxes: Used in flux-cored arc welding, provides a protective layer over the molten weld pool.
* Flux cored wire: Filler metal with a core of flux, used in flux-cored arc welding.
4. Other Substances:
* Welding rods: Consist of filler metal and a flux coating, used in stick welding.
* Welding wire: Filler metal used in MIG and TIG welding.
* Electrodes: Used in stick welding and submerged arc welding, carry electric current to the welding arc.
* Cleaning agents: Used to remove contaminants from the weld area.
5. Protective Gear:
* Welding helmet: Provides eye and face protection from the intense light and heat of the welding arc.
* Welding gloves: Protect hands from burns and sparks.
* Welding apron: Protects clothing from sparks and splatter.
* Welding boots: Provide safety and protection for the feet.
This list represents a selection of common substances used in welding. There are many other specific materials and chemicals used for specific applications and welding processes.
