Weldynasty 304 TIG Welding Wire – The "All-Rounder" for Stainless Steel Welding
304 TIG welding wire is a specialized filler material designed specifically for 304 stainless steel. With excellent corrosion resistance, mechanical properties, and welding adaptability, it is a top choice for the food, medical, and chemical industries—earning it the title of the "all-rounder" for stainless steel welding.
Key Features
Excellent Corrosion Resistance – The 18-8 composition provides good oxidation resistance against air, fresh water, and weakly corrosive media.
Tough, Crack-Resistant Joints – Ensures joint toughness and prevents low-temperature brittleness, while matching the 304 base material to reduce the risk of weld cracks.
Cost-Effective – More economical than 316 wire (which contains molybdenum for stronger pitting resistance), and better suited to non-extreme corrosive environments.
Clean TIG Performance – Stable arc, aesthetically pleasing bead, and no spatter; maintains joint ductility even at low welding temperatures (≤150°C), suitable for precision components.
Specifications
| Diameter (mm) | Plate Thickness (mm) | Recommended Current (A) | Typical Applications |
|---|---|---|---|
| 1.0 | 0.8–2.0 | 50–100 | Thin-walled pipes, kitchenware accessories |
| 1.2 | 1.5–3.0 | 80–140 | Pressure vessels, structural components |
| 1.6 | 2.5–5.0 | 120–180 | Equipment flanges, thick-walled components |
Common grades: ER304 1.2 / 1.6 / 2.0 / 2.5
Operating Notes
Select wire diameter based on weld thickness and current (see table).
Use TIG welding with inert gas shielding for stable arc and clean bead.
Can weld dissimilar steels (e.g., 304 and 304L), but control heat input to prevent intergranular corrosion.
Clean the workpiece before welding; wear PPE and ensure good ventilation.
Ideal For
Thin-walled pipes and kitchenware accessories (1.0 mm).
Pressure vessels and structural components (1.2 mm).
Equipment flanges and thick-walled components (1.6 mm).
Food, medical, and chemical industry fabrication.
FAQ
Q: What is 304 TIG welding wire used for? A: It is a filler material for 304 stainless steel, ideal for food, medical, and chemical applications requiring corrosion resistance and clean welds.
Q: What is its composition? A: Primarily 18%–20% chromium and 8%–10.5% nickel, with small amounts of manganese, silicon, and other elements (the "18-8" system).
Q: How does it compare with 316 wire? A: 304 is more cost-effective and suited to non-extreme corrosive environments; 316 contains molybdenum for stronger pitting corrosion resistance.
Q: Which diameter should I choose? A: 1.0 mm for thin plate (0.8–2.0 mm), 1.2 mm for 1.5–3.0 mm, and 1.6 mm for 2.5–5.0 mm—see the table for currents.
Q: Can it weld dissimilar steels? A: Yes, e.g., 304 and 304L, but heat input must be controlled to prevent intergranular corrosion.
Q: What are the common grades? A: ER304 in 1.2, 1.6, 2.0, and 2.5.