Home > Electrodes > AWS Class E309/309H-16 Electrodes
Njabulo Stainless, located in Cape Town, South Africa, specializes in manufacturing and supplying top-notch AWS Class E309/309H-16 electrodes. These electrodes are specifically crafted for welding austenitic stainless steels and joining dissimilar metals that face high temperatures. Renowned for their outstanding corrosion resistance and mechanical strength, they are perfect for tough industrial applications. Njabulo Stainless is committed to ensuring that their products adhere to international standards, guaranteeing dependable weld performance across various sectors, including chemical processing, power generation, and structural fabrication.
The AWS Class E309/309H-16 electrodes boast a chemical makeup of about 23% chromium and 13% nickel, with the “H” variant featuring a higher carbon content for enhanced strength at elevated temperatures. These electrodes yield weld metal with tensile strengths around 515 MPa (75 ksi), providing excellent resistance to oxidation, cracking, and thermal cycling. They also offer stable arc characteristics, allowing for sound welds in any position.
| Classification | AWS A5.4, E309/309H-16 |
| Form | Welding Electrode, Welding Rods |
| Type Of Current | AC-DCEP (Direct Current Electrode Positive) |
| Welding Position | F, V, OH, H |
| Size | 2.0 mm, 2.50 mm, 3.15 mm, 4.00 mm, 5.0 mm |
| AC/DC+ | AC or DC (+) |
| JIS Specification | BS 2926 19.9 A R |
| Other Specification | DIN 8556 E19 9 R 23 A |
| AWS E309/309H-16 Coated Electrodes Application & uses |
|
| C | Cr | Ni | Mo | Mn | Si | P | S | Cu |
| 0.04 | 22.0-25.0 | 12.0-14.0 | 0.75 | 0.5-2.5 | 1.00 | 0.04 | 0.03 | 0.75 |
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Designed for welding stainless steel to mild steel or other stainless steel types, these electrodes offer high corrosion resistance. Typically available in sizes like 3/32″ to 1/8″ diameter, they provide excellent weld quality with minimal spatter.
These electrodes are ideal for general-purpose welding, offering good corrosion resistance for stainless steel applications. Sizes usually range from 1/8″ to 3/16″ in diameter, and they ensure smooth welding with light flux coatings for improved visibility and control.
Suitable for heavy-duty welding tasks, these electrodes enhance corrosion resistance and are used for thick stainless steel sections. Common sizes include 5/32″ to 1/4″ diameter, featuring a thicker coating for robust and stable arc performance.
These electrodes are commonly used for welding stainless steel to carbon steel and for fabricating components such as furnace parts, pressure vessels, and piping systems that endure harsh environments. Their durability and resistance to high-temperature corrosion make them ideal for repair and construction work in power plants, chemical industries, and other heavy-duty applications that demand strong, resilient welds.
The AWS Class E309/309H-16 electrodes primarily are used on dissimilar metal welds particularly in joining other grades of stainless steels as well as where stainless steel may be combined with mild steel. These electrodes, in particular exhibit excellent corrosion properties, high temperatures strength, improved toughness, make them ideal usage in chemical processes, petrochemical, electrical power generation environments, and other marine environments. They are generally used for welding components exposed to heat and corrosive environments, such as heat exchangers, pressure vessels and pipelines.







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