ThePipingMart Blog Welding Electrodes AWS Class E9015-B9 Coated Electrodes – Composition, Properties, and Uses

AWS Class E9015-B9 Coated Electrodes – Composition, Properties, and Uses

AWS Class E9015-B9 Coated Electrodes

AWS Class E9015-B9 coated electrodes are an essential welding material often utilized in various industries such as petrochemical, chemical, and power generation. The coated electrodes provide an excellent combination of physical and mechanical properties that deliver superior results, making it a popular choice for welding applications. But what are AWS Class E9015-B9 coated electrodes, and why is it so widely used? This blog post will explore the composition, physical and mechanical properties, uses, heat treatment process, and corrosion resistance of AWS Class E9015-B9 coated electrodes.

What are AWS Class E9015-B9 Coated Electrodes?

AWS Class E9015-B9 Coated Electrodes welding electrodes are a type of consumable electrode used to join similar and dissimilar metals together. These electrodes possess an iron or steel base alloys, which is then covered with a layer of flux composed of various materials such as silica, lime, calcium fluoride, manganese oxide and other ingredients. The coating increases the arc stability during welding processes to reduce spatter and protect welding joints from corrosion. This electrode type has excellent arc starting ability with a low-temperature transition, offering high efficiency in AC & DC applications. Additionally, it provides superior performance on stainless steel surfaces for improved weld bead appearances that require low heat input levels.

E9015-B9 Coated Electrodes Composition

AWS Class E9015-B9 coated electrodes are low hydrogen iron powder electrodes producing high-quality welds. The composition consists of a blend of deoxidizers, high-quality iron powder, and a low hydrogen coating that provides excellent results. It also includes chemical elements such as chromium, nickel, and molybdenum, increasing heat and corrosion resistance.




Cr Ni Mo P S N Cb Cu V



9.5 .10 .95 .01 .01 .05 .04 .01 .21

E9015-B9 Welding Electrodes Physical Properties

The physical properties of AWS Class E9015-B9 electrodes include a nominal diameter of 3.2mm, 4.0mm, and 5.0mm. The maximum operating temperature is approximately 800℃, and the electrode provides excellent resistance to hot and cold cracking. The elongation per cent in 50 mm and reduction of cross-section area is at 28% and 58%, respectively.

E9015-B9 Coated Electrodes Mechanical Properties

AWS Class E9015-B9 wire offer excellent mechanical properties, including high tensile strength, yield strength, and elongation. The tensile strength ranges from 620 – 690 MPa, while the yield strength is around 530 – 580 MPa. The elongation percentage is around 28%, making it a suitable material for welding high-stress structures.


138,300 PSI


121,800 PSI




29-35 FT. LBS.

E9015-B9 Welding Electrodes Trade Names

Class UNS Oxford Alloys BOHLER
E9015-B9 W50425 Alloy 9015-B9 BOHLER FOX C 9 MV

E9015-B9 Coated Electrodes Parameters


3/32” 1/8” 5/32” 3/16”



90-110 120-145 155-190 200-235


80-105 100-130 145-180


22 TO 28 22 TO 28 22 TO 28 22 TO 28

E9015-B9 Coated Electrodes Uses

AWS Class E9015-B9 welding wire are frequently used in welding applications requiring high strength and corrosion resistance. It is commonly used for welding various materials, including ASTM A387 Grade 9, piping, vessels, and valves in the petrochemical and chemical industries. It is also used in power generation, oil and gas, and shipbuilding industries.

E9015-B9 Coated Electrodes Heat Treatment

AWS Class E9015-B9 filler wire typically require preheating and post-weld heat treatment to ensure the best results. Preheating helps to minimize brittle failure, while post-weld heat treatment helps to avoid hydrogen embrittlement and improves the mechanical properties of the weld. Following the recommended heat treatment process is essential to achieve optimal results.

E9015-B9 Welding Electrodes Corrosion Resistance

AWS Class E9015-B9 filler metal excel in resistance against heat and corrosion, providing long-lasting results for various applications. The chemical composition of the electrode elements, including chromium, nickel, and molybdenum, contributes to the electrode’s excellent corrosion resistance. Corrosion is a significant concern in various industries, and AWS Class E9015-B9 coated electrodes provide the necessary protection from deterioration.


AWS Class E9015-B9 coated electrodes are a high-quality welding material frequently used in various industries that demand durability and corrosion resistance. The composition, physical and mechanical properties, heat treatment process, and corrosion resistance provided by AWS Class E9015-B9 coated electrodes make it an excellent choice for welding applications. The knowledge shared in this blog post should equip you with a better understanding of AWS Class E9015-B9 coated electrodes and how they can benefit your welding projects.

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