When it comes to welding, choosing the right consumables is crucial to ensuring high-quality welds free from defects and meet the required specifications. One such important consumable is the coated electrode. This blog post will take a closer look at AWS Class E2594-16 coated electrodes. We will discuss their composition, physical and mechanical properties, uses, heat treatment, and corrosion resistance. By the end of this guide, you will better understand this type of coated electrode and how it can benefit your welding projects.
What are AWS Class E2594-16 Coated Electrodes?
AWS Class E2594-16 Coated Electrodes are an advanced welding system designed to increase performance for numerous structural and high-strength steel applications. These electrodes contain a special iron powder core wire coated with a layer of active ingredient chromium oxide, which helps reduce spatter and increase the amount of metal deposited. These welding rods have superior arc stability, deeper penetration depth, higher impact values, and greater ease in controlling hydrogen levels when compared to standard electrodes. By utilizing this electrode type, welders can achieve the highest possible quality results while greatly reducing repair costs due to higher deposition rates and improved mechanical properties.
E2594-16 Coated Electrodes Composition
AWS Class E2594-16 electrodes are stainless steel electrodes with a nominal composition of 25% chromium, 9% nickel, 4% molybdenum, and 0.15% nitrogen. This composition makes them highly resistant to corrosion and allows them to perform well in harsh environments.
| Carbon (C) | 0.03 |
| Chromium (Cr) | 25.0 |
| Copper (Cu) | 0.75 max |
| Manganese (Mn) | 1.00 |
| Molybdenum (Mo) | 3.80 |
| Nickel (Ni) | 9.50 |
| Nitrogen (N) | 0.25 |
| Phosphorous (P) | 0.04 max |
| Silicon (Si) | 0.62 |
| Sulfur (S) | 0.03 max |
E2594-16 Welding Electrodes Physical Properties
AWS Class E2594-16 welding wire have a diameter of 1.6mm to 5.0mm and a length of 350mm to 450mm. They have a stable arc, good slag control, and excellent strike and restrike characteristics. They are also easy to use and can be used with AC or DC.
E2594-16 Coated Electrodes Mechanical Properties
AWS Class E2594-16 welding alloy have a tensile strength of 900MPa, a yield strength 690MPa, and an elongation of 30%. They also have a low coefficient of thermal expansion, high thermal conductivity, and excellent toughness. These mechanical properties make them ideal for welding thick sections and high-stress applications.
| mechanical properties | E2594-16 |
|---|---|
| Yield Strength (psi) | N/A |
| Ultimate Tensile Strength (psi) | 110,000 |
| Elongation in 2″ (%) | 15 |
E2594-16 Welding Electrodes Trade Names
| Class | UNS | Oxford Alloys | BOHLER | SANDVIK |
| E2594-16 | W39209 | Alloy 2594-16 | BOHLER AVESTA 2507/P100 | EXATON 25.10.4.LB (2594-15) |
E2594-16 Coated Electrodes Parameters
| Diameter | Length |
Amperage |
|
|
Flat |
Vertical & Overhead |
||
| 3/32” |
12” |
70-85 |
65-75 |
| 1/8” |
14” |
85-110 |
80-90 |
| 5/32” |
14” |
110-140 |
100-120 |
| 3/16” |
14” |
120-160 |
110-130 |
E2594-16 Coated Electrodes Uses
AWS Class E2594-16 filler metal are commonly used in the petrochemical, chemical, and oil and gas industries for welding duplex stainless steels. They can be used to join dissimilar metals and for repairing and maintaining equipment. They are also suitable for welding structures that require high strength and resistance to corrosion.
E2594-16 Welding Electrodes Heat Treatment
AWS Class E2594-16 filler wire do not require to preheat or post-weld heat treatment. However, for optimal results, it is recommended to use a low-hydrogen welding process and to maintain a low interpass temperature during welding.
E2594-16 Coated Electrodes Corrosion Resistance
AWS Class E2594-16 coated electrodes have excellent corrosion resistance in various environments, including seawater, acidic and alkaline solutions, and chloride-containing environments. They are also resistant to pitting and crevice corrosion, which are common types of corrosion in duplex stainless steel.
Conclusion
AWS Class E2594-16 coated electrodes are a type of stainless steel electrode that is highly resistant to corrosion and has excellent mechanical properties. They are suitable for welding duplex stainless steel structures and are commonly used in the petrochemical, chemical, and oil and gas industries. By understanding their composition, physical and mechanical properties, uses, heat treatment, and corrosion resistance, you can decide when to select the right consumable for your welding projects.
Meet Bhavesh, a seasoned blogger with a wealth of knowledge and experience. From metal products manufacturing to retail, Bhavesh has a diverse background in various industries and is dedicated to sharing his insights and expertise with readers.
