Home > Electrodes > AWS Class E330-16 Electrodes
AWS Class E330-16 electrodes are a type of austenitic stainless steel welding rod specifically crafted for shielded metal arc welding (SMAW). These electrodes are mainly used to join wrought and cast stainless steels that share similar chemical compositions, providing excellent heat and scale resistance up to around 1800°F (980°C). The E330-16 classification signifies that these electrodes are versatile enough for welding in all positions and can be used with either alternating current (AC) or direct current electrode positive (DCEP) polarity.
When it comes to their chemical makeup, E330-16 electrodes generally contain carbon (C) in the range of 0.18–0.25%, chromium (Cr) from 14.0–17.0%, nickel (Ni) between 33.0–37.0%, manganese (Mn) at 1.0–2.5%, silicon (Si) capped at 1.0%, phosphorus (P) at a maximum of 0.04%, sulfur (S) no more than 0.03%, molybdenum (Mo) up to 0.75%, and copper (Cu) also at a maximum of 0.75%. This specific blend of elements helps the electrode deliver robust, corrosion-resistant welds even in high-temperature settings.
| Classification | AWS A5.4, E330-16 |
| 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 E330-16 Coated Electrodes Application & uses |
|
| C | Cr | Ni | Mo | Mn | Si | P | S | Cu |
| 0.18-0.25 | 14.0-17.0 | 33.0-37.0 | 0.75 | 1.0-2.5 | 1.00 | 0.04 | 0.03 | 0.75 |
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These electrodes offer excellent corrosion resistance for welding stainless steel. They are typically available in diameters ranging from 2.5 mm to 5.0 mm and lengths of 300 mm to 450 mm. The light coating ensures smooth arc stability and ease of operation.
Providing superior corrosion resistance, heavy-coated electrodes are designed for demanding environments. Sizes generally range from 3.2 mm to 5.0 mm in diameter and lengths of 350 mm to 450 mm. The heavy coating enhances the arc stability and weld quality in challenging applications.
These electrodes feature excellent corrosion resistance and are ideal for shielded arc welding. They come in diameters from 2.5 mm to 4.0 mm and lengths of 300 mm to 450 mm. The shielding provides effective protection against contamination during the welding process.
In terms of mechanical properties, E330-16 electrodes typically boast a tensile strength of 75,000 psi (about 520 MPa), a yield strength of 30,000 psi (around 210 MPa), and a minimum elongation of 25%. These characteristics ensure that welds made with E330-16 electrodes are not only durable but also capable of handling the stresses that arise in high-temperature applications.
AWS Class E330-16 electrodes are primarily used for welding low alloy steels in applications requiring moderate strength and resistance to atmospheric corrosion. These electrodes are ideal for use in structures subjected to moderate stresses, such as bridges, buildings and pressure vessels. Their ability to withstand moderate temperatures and provide a smooth, stable arc makes them suitable for both overhead and flat positions. Additionally, they are used in the construction of industrial machinery and in situations where moderate tensile strength is required.







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