304 / 304S stainless steel welding rod/wire (also known as ER308, ER308L, SUS304, SUS304L, WNR 1.4301, 1.4307, SS304, 18Cr-8Ni) is a high-quality austenitic stainless steel filler material designed for welding 304 stainless steel and similar alloys.
It provides excellent corrosion resistance, good mechanical strength, and stable weld performance.
Widely used in chemical equipment, food processing machinery, piping, pressure vessels, kitchen equipment, and general stainless steel fabrication.
304S is the low-carbon variant, optimized to reduce sensitization and intergranular corrosion during welding.
| Element | Content (%) |
|---|---|
| Carbon (C) | ≤ 0.08 (304) / ≤ 0.03 (304S) |
| Chromium (Cr) | 18–20 |
| Nickel (Ni) | 8–10 |
| Manganese (Mn) | ≤ 2 |
| Silicon (Si) | ≤ 1 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.03 |
| Iron (Fe) | Balance |
| Parameter | Specification |
|---|---|
| Material Type | Austenitic Stainless Steel (304 / 304S / ER308 / ER308L / SUS304) |
| Product Form | Welding Rod / Welding Wire |
| Diameter | 0.8 – 5.0 mm (customizable) |
| Length | 250 – 1000 mm (customizable) |
| Melting Point | Approx. 1400–1450 °C |
| Conductivity | Low to Moderate |
| Corrosion Resistance | Excellent |
| Packaging | Coils or straight rods |
| Attribute | Options / Description |
|---|---|
| Alloy Grade | 304 / 304S / ER308 / ER308L / SUS304 / SUS304L / WNR 1.4301 / 1.4307 / SS304 |
| Material Type | Austenitic Stainless Steel |
| Product Form | Welding Rod / Welding Wire |
| Diameter | 0.8 – 5.0 mm (customizable) |
| Diameter Tolerance | ±0.01 mm |
| Length | 250 – 1000 mm (customizable) |
| Surface Finish | Bright, Polished |
| Packaging Type | Coil, Bundle, Straight Rods |
| Melting Point | Approx. 1400–1450 °C |
| Corrosion Resistance | Excellent |
| Strength / Mechanical Property | High |
| Welding Method | TIG (GTAW), MIG (GMAW), Manual Welding |
| Heat Treatment | As-drawn, Annealed |
| Certification | ISO 9001, RoHS, REACH (optional) |
| Special Coating | Optional anti-oxidation coating |
| Application Environment | Chemical, Food, Marine, Industrial |
| Customizable Length & Diameter | Any within standard ranges, special sizes on request |
Chemical equipment and piping
Food processing and kitchen equipment
Pressure vessels and tanks
Architectural and decorative stainless steel
General industrial stainless steel fabrication
Excellent corrosion resistance (especially to oxidizing acids and atmospheric corrosion)
High mechanical strength and ductility
Smooth and clean weld appearance
Low carbon variant (304S) reduces risk of sensitization and intergranular corrosion
Suitable for manual and automated welding processes
Easy handling and processing
Compatible with most 300-series stainless steels
Stable arc and low spatter during welding
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