ER 430L Welding Wire
OVERVIEW OF ER 430L WELDING WIRE
ER 430L is a ferritic stainless steel welding electrode renowned for its low carbon content, which minimizes sensitization and improves resistance to intergranular corrosion. It is ideal for joining ferritic stainless steels and similar parent materials where distortion control and weld integrity are essential.
This welding wire offers:
- Stable arc and smooth bead appearance
- Excellent resistance to oxidation and scaling at high temperatures
- Low risk of weld cracking
- Controlled mechanical properties for dependable performance.
CHEMICAL COMPOSITION
| Element | Percentage (%) |
| Carbon (C) | ≤ 0.03 |
| Manganese (Mn) | ≤ 1.00 |
| Phosphorus (P) | ≤ 0.040 |
| Sulfur (S) | ≤ 0.030 |
| Silicon (Si) | ≤ 1.00 |
| Chromium (Cr) | 16.0 – 18.0 |
| Iron (Fe) | Balance |
MECHANICAL PROPERTIES
| Property | Typical Value |
| Tensile Strength | ≥ 485 MPa (70 ksi) |
| Yield Strength | ≥ 275 MPa (40 ksi) |
| Elongation | ≥ 22% in 50 mm |
| Hardness | ≤ 200 HB |
PHYSICAL PROPERTIES
| Density: | ~7.7 g/cm³ |
| Melting Range: | 1450–1500°C |
| Thermal Conductivity: | Moderate |
| Coefficient of Thermal Expansion: | Lower than austenitic grades |
APPLICATIONS OF ER 430L WELDING WIRE
- Pressure vessels and heat exchangers
- Boilers and furnaces
- Petrochemical equipment
- Automotive exhaust systems
- Heat shields
- Mufflers
- Appliance components
- Kitchen equipment
- Material handling systems
- Joining ferritic stainless steels
- Repair and maintenance welding
- Fabrication requiring good corrosion and oxidation resistance
EQUIVALENT GRADES
| Standard | Equivalent Grade |
| AWS A5.9 | ER430L |
| ASME SFA A5.9 | ER430L |
| EN Standard | (Similar to) X6Cr17 |
| UNS | S43020 |
| ISO | Comparable ferritic stainless grade |
430L TIG Wire
430L MIG Wire
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