One、What size welding wire is used for stainless steel doors and windows?
The main consideration is the wall thickness of stainless steel doors and windows. Generally, stainless steel pipes have a wall thickness of 0.8-3mm, and welding wires with a diameter of 1mm to 1.5mm can be used. Commonly used stainless steel doors and windows are typically made of 202 stainless steel, and welding wires made of 202 stainless steel can be used. Welding wires made of 304 stainless steel can also be used, resulting in better performance.
II. Common Stainless Steel Welding Rod Specifications
1、For low-carbon steel structural components, typically use Ti-Ca type E4303 (J422) or E5023 (J502) welding rods.
2. For critical structural components requiring high plasticity, toughness, and crack resistance, use low-hydrogen E4315 (J427) or E5015 (J507) welding rods. When welding with an AC welding machine, low-hydrogen E4316 (J426) or E5016 (J506) welding rods, which are compatible with both AC and DC power, can be used.
3. For thin plate components requiring a visually appealing and smooth weld surface, it is preferable to use titanium-cored E4313 (J421) welding electrodes.
4、For welding components where it is difficult to effectively remove oil rust and other contaminants, and where a high slag removal requirement exists, it is best to use E4320 (J424) type welding electrodes.
5. For large vertical welds, when feasible, use welding electrodes specifically designed for vertical downward welding, such as E4300 (J420) welding rods.
6. The above lists common welding rods categorized by their intended use. The diameter of the welding rod is determined by the thickness of the workpiece. Welding rods are typically categorized by their core size, with common sizes including 2, 2.5, 3.2, 4, 5, and 6 mm. The most commonly used sizes are 2.5, 3.2, and 4 mm, with corresponding welding currents of 50-80A, 100-130A, and 160-200A, respectively.