When choosing an electrode for welding, you want one with a reliable track record. That’s where AWS Class E2209-16 comes in. This coated electrode has been used in the welding industry for years and is a popular choice among welders. In this blog post, we’ll go over what AWS Class E2209-16 is, its composition, physical and mechanical properties, and its uses. We’ll also touch on heat treatment, corrosion resistance, and why AWS Class E2209-16 is an excellent choice for your next welding project.
What is AWS Class E2209-16 Coated Electrode?
AWS (American Welding Society) Class E2209-16 is a duplex stainless steel electrode designed for welding applications requiring excellent corrosion resistance and high strength. It’s specifically designed for welding duplex stainless steel, a combination of austenitic and ferritic stainless steel.
E2209-16 Coated Electrodes Composition
The composition of AWS Class E2209-16 Electrode is crucial to its performance. It has high levels of chromium, molybdenum, and nitrogen, which provide excellent corrosion resistance. The nickel content in AWS Class E2209-16 provides the strength required for welding applications. The electrode coating consists of a mixture of rutile and ferrotitanium powder, which provides stable arc characteristics, good slag removal, and a clean weld deposit.
| C |
Mn |
Si |
Cr |
Ni | Mo | S | P |
Cu |
N |
| 0.04 |
0.5- |
1.0 |
21.5- |
8.5- |
2.5- | 0.03 | 0.04 |
0.75 |
0.08- |
| max |
2.0 |
max |
23.5 |
10.5 | 3.5 | max | max |
max |
0.20 |
E2209-16 Welding Electrodes Physical Properties
AWS Class E2209-16 welding alloy have unique physical properties, making them an exceptional choice for welding applications. They have a high tensile strength of 750 MPa, making them suitable for demanding welding applications. The electrodes have a yield strength of 630 MPa, meaning they can handle significant amounts of stress and pressure. The elongation at the break is 20%, meaning the electrode can withstand movement and flex without breaking.
E2209-16 Coated Electrodes Mechanical Properties
The mechanical properties of AWS Class E2209-16 welding wire are equally impressive. They have excellent pitting and crevice corrosion resistance, making them suitable for offshore and marine welding projects. The electrodes have a low coefficient of thermal expansion and high thermal conductivity, making them perfect for welding applications with high-temperature differentials. AWS Class E2209-16 Coated Electrodes also have excellent impact strength, making them suitable for pipeline and pressure vessel welding projects.
| Yield Strength | 115,000 psi |
| Tensile Strength | 90,000 psi |
| Elongation | 27% |
E2209-16 Welding Electrodes Trade Names
| Class | UNS | Oxford Alloys | BOHLER | SANDVIK |
| E2209-16 | W39209 | Alloy 2209-16 | BOHLER AVESTA 2205-PW AC-DC (E2209-17) | EXATON 22.9.3.LR (2209-17) |
E2209-16 Coated Electrodes Parameters
| Diameter |
Process |
Volt | Amps (flat) |
Amps (V/OH) |
|
| in | (mm) | ||||
| 3/32 | (2.4) | SMAW | 24-28 |
70-85 |
65-75 |
| 1/8 | (3.2) | SMAW | 26-30 |
85-110 |
80-90 |
| 5/32 | (4.0) | SMAW | 28-32 |
110-140 |
100-120 |
| 3/16 | (4.8) | SMAW | 28-32 |
120-160 |
110-130 |
E2209-16 Coated Electrodes Uses
AWS Class E2209-16 filler wire have a wide range of applications. They can be used in the chemical processing industry, offshore and marine welding projects, pipeline and pressure vessel welding projects, and the food processing industry. AWS Class E2209-16 Coated Electrodes are also an excellent choice for welding applications that require high strength and excellent corrosion resistance.
E2209-16 Welding Electrodes Heat Treatment
Heat treatment is essential when working with AWS Class E2209-16 filler metal. The electrode should be preheated to 150-300°C before welding to prevent cracking and improve the weld quality. The electrode should also be annealed after welding to reduce stress and prevent corrosion. The temperature for annealing should be between 1050-1150°C, and the electrode should be allowed to cool slowly.
E2209-16 Coated Electrodes Corrosion Resistance
Finally, AWS Class E2209-16 Coated Electrodes exhibit excellent corrosion resistance. They are resistant to pitting, crevice corrosion, and stress corrosion cracking. This makes them suitable for welding projects requiring excellent corrosive environment resistance. The electrodes can be used in seawater, brackish water, and corrosive chemicals.
Conclusion
In conclusion, AWS Class E2209-16 Coated Electrodes are an excellent choice for welding projects that require excellent corrosion resistance and high strength. They have a reliable track record in the welding industry and are trusted by welders worldwide. The composition, physical, and mechanical properties of AWS Class E2209-16 Coated Electrodes make them perfect for a wide range of applications. Always remember to preheat and anneal the electrode and that AWS Class E2209-16 Coated Electrodes exhibit excellent corrosion resistance. If you’re looking for a trustworthy and reliable electrode for your next welding project, AWS Class E2209-16 Coated Electrodes should be at the top of your list.
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.
