ThePipingMart Blog Welding Electrodes HASTELLOY® X Coated Electrodes – Composition, Properties, and Uses

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

HASTELLOY® X Coated Electrodes

Have you heard of HASTELLOY® X-coated electrodes? These electrodes are widely used in the welding alloy industry due to their excellent mechanical and physical properties. This blog post’ll explore what HASTELLOY® X coated electrodes are, their composition, mechanical and physical properties, corrosion resistance, heat treatment, and uses.

What are HASTELLOY® X Coated Electrodes?

HASTELLOY® X Coated Electrodes is a welding electrode designed for welding HASTELLOY® X alloys. These electrodes have a special coating that provides excellent corrosion resistance and high-temperature strength properties. This makes them ideal for use in extreme environments with ineffective traditional welding methods.

HASTELLOY® X Welding Electrodes Composition

HASTELLOY® X electrodes are made of high-temperature oxidation-resistant nickel-chromium-iron-molybdenum alloy. The alloy has a high strength and creep resistance, even at elevated temperatures. The alloy also contains a small amount of carbon, silicon, manganese, and sulfur.

Nickel: Balance
Chromium: 20.5-23.0
Molybdenum: 8.0-10.0
Iron: 17.0-20.0
Cobalt: 0.50-2.50
Tungsten: 1.0 max.
Manganese: 1.0 max.
Silicon: 1.0 max.
Copper: 0.50 max.
Other: 0.50 max.
Carbon: 0.05-0.15
Sulfur: 0.03 max.
Phosphorus: 0.04 max.

HASTELLOY® X Coated Electrodes Mechanical Properties

HASTELLOY® X-welding electrode have excellent mechanical properties. The tensile strength of the alloy is up to 115 ksi, while the yield strength is around 60 ksi. The alloy is tough and can withstand high-stress applications even at high temperatures. The elongation of the alloy is around 40%.

Tensile (psi) 95,000
Mpa 650
Elongation (%) 20

HASTELLOY® X Welding Electrodes Physical Properties

The physical properties of HASTELLOY® X filler wire make it an ideal choice for high-temperature applications. The alloy has a melting point of 1290°C (2354°F), which is very high compared to other alloys. The specific gravity of the alloy is 8.22 g/cm^3, and the thermal conductivity is 9.9 W/m-K. The alloy also has good electrical conductivity.

HASTELLOY® X Coated Electrodes Trade Name

Class UNS Haynes

HASTELLOY® X Coated Electrodes Uses

HASTELLOY® X-  filler metal are used in a variety of applications. The alloy is used in gas turbine engine components such as combustors, afterburners, and transition ducts. The alloy is also used in furnace rolls, jet engine tailpipes, heat exchangers, and chemical processing equipment.

HASTELLOY® X Welding Electrodes Corrosion Resistance

HASTELLOY® X-coated electrodes are highly resistant to corrosion. The alloy can withstand oxidizing and reducing environments, making it an ideal choice for corrosion application. The alloy can also withstand sulfuric, hydrochloric, and phosphoric acids.

HASTELLOY® X Coated Electrodes Heat Treatment

HASTELLOY® X-coated electrodes can be heat-treated to increase strength and hardness. The alloy can be solution annealed at 1150°C (2100°F) for 15 minutes, followed by air cooling. The alloy can also be aged at 982°C (1800°F) for 16 hours, followed by air cooling. These heat treatment processes can improve the mechanical properties of the alloy.


HASTELLOY® X coated electrodes are a versatile alloy that can be used in various high-stress applications. The alloy has excellent mechanical and physical properties, high corrosion resistance, and can be heat-treated to improve its strength and hardness. The uses of the alloy are vast, from gas turbine engine components to chemical processing equipment. HASTELLOY® X coated electrodes are a reliable choice for any application that requires high strength and corrosion resistance.

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