ThePipingMart Blog Welding Electrodes AWS Class E8018-B2 Coated Electrodes – Composition, Properties, and Uses

AWS Class E8018-B2 Coated Electrodes – Composition, Properties, and Uses

AWS Class E8018-B2 Coated Electrodes

Welding is an essential process in various industries, and the quality of the weld is critical. One of the key factors in achieving a good quality weld is the choice of electrode. AWS Class E8018-B2 coated electrodes are a popular choice for welding high-strength steels. This blog post will discuss everything you need to know about AWS Class E8018-B2 coated electrodes, from their composition to their uses.

What are AWS Class E8018-B2 Coated Electrodes?

AWS Class E8018-B2 Electrodes are a type of electrode used in Shielded Metal Arc Welding (SMAW) processes. These electrodes have an alloy layer that provides excellent results when welding low and medium-carbon steels. The coating is designed to help minimize spatter, reduce the risk of porosity, and increase penetration. Furthermore, E8018-B2 coated electrodes can be used on plates ranging from 1/4 inch (6mm) to 3 inches (76mm). This makes them suitable for various applications, including automotive repair, shipbuilding and construction projects. In addition to these benefits, they offer superior arc stability even in poor welding conditions, making them ideal for welders with less experience or working with challenging materials.

E8018-B2 Welding Electrodes Composition

AWS Class E8018-B2 wire have a coating containing various chemicals that ensure the weld’s quality. The primary elements in the coating are iron, nickel, chromium, and molybdenum. The coating also has an antioxidant to prevent oxidation of the weld pool and a deoxidizer to remove any impurities.




P S Cr Mo




0.03 0.03 1.00-





max max 1.50 0.65

E8018-B2 Coated Electrodes Physical Properties

AWS Class E8018-B2 alloy have a typical diameter of 3.2mm and a length of 350mm. The coating on the electrode also adds a layer of approximately 1.5mm to the diameter. The electrodes are grey and have a rough surface texture.

E8018-B2 Welding Electrodes Mechanical Properties

AWS Class E8018-B2 filler metal have excellent mechanical properties, making them suitable for welding high-strength steels. The tensile strength of the weld is typically between 700-900MPa, and the yield strength is typically greater than 640MPa. The elongation of the weld is typically between 20-25%.

Tensile Strength MPa (ksi)

Yield Strength MPa (ksi)



550 (80) min 460 (67) min 19 min

Typical Results – As welded

670 (97) 590 (97) 25

E8018-B2 Coated Electrodes Trade Names

Class UNS Oxford Alloys BOHLER
E8018-B2 W52018 Alloy 8018-B2 BOHLER FOX DCMS KB

E8018-B2 Welding Electrodes Parameters



Volt Amps (flat)

Amps (V/OH)

in (mm)
3/32 (2.4) SMAW 21-25


1/8 (3.2) SMAW 21-25


5/32 (4.0) SMAW 21-26


3/16 (4.8) SMAW 22-26



E8018-B2 Coated Electrodes Uses

AWS Class E8018-B2 filler wire are commonly used for welding pipes, vessels, and structures that require high strength. The electrodes can weld steel with a thickness of up to 50mm and are commonly used in the construction, shipbuilding, and petrochemical industries.

E8018-B2 Welding Electrodes Heat Treatment

AWS Class E8018-B2 coated electrodes require post-weld heat treatment to achieve maximum strength. The electrodes should be annealed between 620-680°C for approximately one hour, followed by slow cooling to room temperature. Failure to perform heat treatment will reduce the strength and toughness of the weld.

E8018-B2 Coated Electrodes Corrosion Resistance

AWS Class E8018-B2 coated electrodes have good corrosion resistance, thanks to the addition of chromium and nickel in the coating. The welds are resistant to oxidation, corrosion, and high-temperature creep.


AWS Class E8018-B2 coated electrodes are an excellent choice for welding high-strength steels. The electrodes have excellent mechanical and physical properties, ensuring the quality of the welds. They are widely used in various industries, including construction, shipbuilding, and petrochemicals. However, it is essential to perform post-weld heat treatment to achieve maximum strength. If you need to weld high-strength steel, consider using AWS Class E8018-B2 coated electrodes.

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