Description
ER321 Filler Wire / TIG Wire / MIG Wire
ER321 Filler Wire is a Titanium-Stabilized stainless steel welding wire designed for welding Type 321 stainless steel and similar Chromium-Nickel Stainless Steels exposed to elevated temperatures. The addition of titanium minimizes chromium carbide precipitation, providing superior resistance to intergranular corrosion after welding.
Our ER321 filler wire is manufactured to meet international quality standards, ensuring excellent arc stability, smooth wire feeding, low spatter, and high-quality weld deposits suitable for demanding industrial applications.
For welding stainless steels such AISI 304, 304L, 308, 308L, 321, and 347, TIG 321 is a titanium-stabilized 19Cr/9Ni austenitic stainless steel TIG wire. By binding with carbon, titanium improves mechanical stability and corrosion resistance by preventing intergranular chromium carbide precipitation. This wire, which is frequently utilized in the petrochemical, food processing, and energy sectors, is perfect for applications that call for long-term resistance to high temperatures.
M/s Textron Steel and Alloys is a trusted Supplier & Stockist of ER321 Filler Wire for TIG and MIG Welding Applications.
Diameter :
0.80 mm, 0.90 mm, 1.00 mm, 1.20 mm, 1.60 mm, 2.00 mm, 2.40 mm, 3.20 mm, 4.00 mm
ER321 Chemical Composition :
| Element | Percentage |
| Carbon (C) | Max 0.08 |
| Chromium (Cr) | 18.50 – 20.50 |
| Nickel (Ni) | 9.00 – 10.50 |
| Manganese (Mn) | 1.50 – 2.50 |
| Silicon (Si) | 0.30 – 0.65 |
| Titanium (Ti) | 9xC Min – 1.00 Max |
| Phosphorus (P) | Max 0.03 |
| Sulfur (S) | Max 0.03 |
ER321 Product Specifications :
| Specification | Details |
| AWS Specification | AWS A5.9 |
| ASME Specification | SFA 5.9 |
| AWS Classification | ER321 |
| UNS Number | S32180 |
| Welding Process | TIG (GTAW), MIG (GMAW) |
| Material | Stainless Steel |
| Surface Finish | Bright |
ER321 Filler Wire Features :
• Titanium stabilized stainless steel filler wire
• Excellent resistance to intergranular corrosion
• Superior oxidation resistance at elevated temperatures
• Stable arc with low spatter generation
• Smooth wire feeding
• Excellent weld bead appearance
• High mechanical strength
• Good ductility and toughness
• Crack-resistant weld deposits
• Suitable for continuous high-temperature service
Applications :
ER321 welding filler wire is widely used in industries requiring excellent corrosion resistance and high-temperature performance.
Typical applications include:
• Petrochemical plants
• Oil & Gas industries
• Chemical processing equipment
• Heat exchangers
• Pressure vessels
• Food processing equipment
• Pharmaceutical plants
• Aerospace components
• Exhaust systems
• Power generation
• Furnace equipment
• Stainless steel pipelines
• Thermal oxidizers
• Refineries
Advantages of ER321 Filler Wire :
• Prevents weld decay due to titanium stabilization
• Excellent high-temperature strength
• Outstanding corrosion resistance
• Excellent oxidation resistance
• Smooth welding performance
• Attractive weld finish
• Low porosity
• High productivity
• Reliable mechanical properties
• Long service life
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We can also supply other grades like TIG 347, TIG 347H, TIG 347Si, TIG 385, TIG 409Nb, TIG 410, TIG 410NiMo, TIG 430.
