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HASTELLOY® 112 Coated Electrodes – Composition, Properties, and Uses

HASTELLOY® 112 Coated Electrodes

Welding is a crucial aspect of industrial manufacturing, which requires high-quality welding materials for the best result. HASTELLOY® 112 coated electrodes are among the leading welding rods used in the industry for their excellent performance and durability. It is commonly used in environments with extreme temperatures and harsh chemicals. This blog post discusses in detail what HASTELLOY® 112 coated electrodes are, their composition, mechanical and physical properties, and their specific applications.

What are HASTELLOY® 112 Coated Electrodes?

HASTELLOY® 112 Coated Electrodes are high-performance electrodes designed to provide superior weldability and corrosion resistance in applications that demand extreme heat, pressure, and chemical resistance. This unique combination of properties helps to make the product ideal for bonding dissimilar alloys used in corrosive or erosive environments. The coatings on the electrode core materials offer excellent thermal stability, good arc ignition characteristics, and improved adhesion between the metal surfaces. Additionally, these electrodes feature self-release slag technology, which significantly minimizes post-weld clean-up time while providing a smooth bead appearance with greater productivity and lower cost per weld.

HASTELLOY® 112 Welding Electrodes Composition

HASTELLOY® 112 electrodes are made from a Nickel-Chromium-Molybdenum alloy, with Titanium, and Zirconium added to improve weldability. The Nickel in the alloy provides excellent corrosion resistance, while the Chromium and Molybdenum enhance its oxidation resistance. The amount of Titanium and Zirconium in the alloy helps stabilize the welding process, preventing porosity and cracking.

Nickel: Balance
Chromium: 20.0-23.0
Cobalt: 0.012 max.*
Molybdenum: 8.0-10.0
Iron: 7.0 max.
Manganese: 1.0 max.
Niobium + Tantalum 3.15-4.15
Silicon: 0.75 max.
Copper: 0.5 max.
Other: 0.5 max.
Carbon: 0.1 max.
Phosphorus: 0.03 max.
Sulfur: 0.02 max.

HASTELLOY® 112 Coated Electrodes Mechanical Properties

HASTELLOY® 112 welding electrodes have excellent mechanical properties, high tensile and yield strength, flexibility, and toughness. These properties make them suitable for welding in harsh environments where the material needs to resist strain, dimensional changes, and thermal expansion.

Tensile (psi) 110,000
Mpa 749
Elongation (%) 30

HASTELLOY® 112 Welding Electrodes Physical Properties

HASTELLOY® 112 welding wire have unique physical properties, making them an excellent choice for extreme temperature applications. It has high-temperature strength and excellent thermal conductivity. While the high melting point makes it resistant to heat, the excellent thermal conductivity results in low thermal expansion in the metal. HASTELLOY® 112 coated electrodes also exhibit good resistance to thermal shock, making them suitable in cryogenic environments.

HASTELLOY® 112 Coated Electrodes Trade Name

Class UNS Haynes
ENiCrMo-3  W86112 HAYNES® 112

HASTELLOY® 112 Welding Electrodes Corrosion Resistance

The alloy composition of HASTELLOY® 112 filler wire makes them highly corrosion-resistant. They resist corrosion caused by acids, alkaline, and chlorides, making them perfect for use in the chemical, petrochemical, and oil and gas industries. They also provide outstanding resistance to pitting, crevice, and stress corrosion cracking corrosion, making them a reliable electrodes for challenging environments.

HASTELLOY® 112 Coated Electrodes Heat Treatment

HASTELLOY® 112 filler metal require a post-weld heat treatment to achieve the desired properties. The heat treatment is essential to remove residual stresses, which may lead to cracking or deformation. The recommended heat treatment process is at 1125°C, followed by quenching.

Conclusion

In conclusion, HASTELLOY® 112 coated electrodes are versatile and efficient welding rods with exceptional mechanical and physical properties. They provide excellent corrosion resistance and work well in environments with high temperatures and harsh chemicals. While their heat treatment process is essential, they remain the go-to choice in various chemical, petrochemical, and oil and gas industries. By understanding HASTELLOY® 112 coated electrodes’ properties and applications, choosing the right electrode for your welding needs becomes easy.

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