ThePipingMart Blog Welding Electrodes AWS Class E347-16 Coated Electrodes – Composition, Properties, and Uses

AWS Class E347-16 Coated Electrodes – Composition, Properties, and Uses

AWS Class E347-16 Coated Electrodes

Welding is an art in which two or more metals are joined using heat and pressure. Coated electrodes are essential in creating a strong bond to achieve this process. AWS Class E347-16 Coated Electrodes are among the most preferred electrodes in the market. Whether you are a welder or not, this blog post will give you a comprehensive understanding of AWS Class E347-16 Coated Electrodes, their composition, physical properties, mechanical properties, uses, heat treatment, and corrosion resistance.

What are AWS Class E347-16 Coated Electrodes?

AWS Class E347-16 Coated Electrodes are a type of electrode used in welding wire. These electrodes consist of a filler wire with a coating material applied to the outer surface. This coating helps prevent oxidation (rusting) on the weld and increases shock resistance during welding. AWS Class E347-16 Coated Electrodes have special properties compared to other coated electrodes, making them suitable for applications like marine use, stainless steel base filler metal, and low alloyed steels. They offer good welding performance at both high and low current levels, combined with optimal mechanical values when post-weld heat treatment is desired. These electrodes resist cracking due to corrosion fatigue and can be used for limited access conditions for fillet joints.

E347-16 Welding Electrodes Composition

AWS Class E347-16 Coated Electrodes are made of Titanium stabilised austenitic Stainless steel coated with rutile-calcium-fluoride type coating that contains around 0.5% molybdenum. The rutile in this electrode provides an easily removable slag. This feature makes it user-friendly and time-efficient.

C Cr Ni Nb+Ta Mn Si P S Mo Cu
0.08 18.0-21.0 9.0-11.0 8xC-1.0 0.5-2.5 1.0 0.04 0.03 0.75 0.75

E347-16 Coated Electrodes Physical Properties

The AWS Class E347-16 Coated Electrodes have one of the most attractive physical properties. The electrodes are available in various sizes, mainly 2.5mm, 3.2mm, and 4.0mm. The electrodes are 350mm long, making them long-lasting and durable. The colour of the electrode is Greyish-Blue, which is easy to distinguish from other electrodes.

E347-16 Welding Electrodes Mechanical Properties

AWS Class E347-16 Coated Electrodes offer excellent mechanical properties. The Electrodes have a max tensile strength of 610 N/mm2. Moreover, the elongation percentage is 35%, meaning the electrodes provide flexibility after welding electrode. The impact energy equals 60J meaning that this electrode is impact resistant and robust.

Yield Strength 86,500 psi
Tensile Strength 58,000 psi
Elongation 34.5%

E347-16 Coated Electrodes Trade Names

Class UNS Oxford Alloys BOHLER UTP
E347-16 W34710 Alloy 347-16 BOHLER FOX SAS 2-A E347-17 UTP 68 E 347 – 17

E347-16 Welding 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

E347-16 Coated Electrodes Uses

AWS Class E347-16 welding alloy are ideal for welding Stainless steel components and dissimilar metals. It can be used in various applications such as pipelines, pressure vessels, chemical industries, oil refineries, fabrication industries, and many more. Because of its excellent mechanical and physical properties, it has become ideal for industrial use.

E347-16 Welding Electrodes Heat Treatment

Heat treatment is essential to confirm the finished product’s desired properties. The AWS Class E347-16 Coated Electrode has a heat treatment range from 1040°C to 1120°C. These electrodes offer excellent heat resistance and stability. The correct heat treatment guarantees the finished product’s strength and flexibility.

E347-16 Coated Electrodes Corrosion Resistant

AWS Class E347-16 Coated Electrodes provide excellent corrosion protection. It is resistant to corrosive atmospheres and intergranular corrosion. Its composition includes molybdenum, which enhances its corrosion resistance. It is perfect for industrial applications, especially those in highly corrosive environments.

Conclusion

In conclusion, AWS Class E347-16 Coated Electrodes is an indispensable tool in welding various metals, particularly Stainless steel. It offers excellent mechanical and physical properties, making it ideal for various industrial applications. From its unique composition, physical properties, mechanical properties, uses, and heat treatment to its corrosion resistance, AWS Class E347-16 Coated Electrodes have proven reliable and efficient in creating a strong bond between metals.

Related Post