ThePipingMart Blog Welding Electrodes AWS Class ERNiCrMo-10 Welding Wire – Composition, Properties, and Uses

AWS Class ERNiCrMo-10 Welding Wire – Composition, Properties, and Uses

AWS Class ERNiCrMo-10

AWS Class ERNiCrMo-10 is among the many welding wires that have been in use for decades in various industrial applications. If you are not in the welding industry, you might ask yourself, what is AWS Class ERNiCrMo-10? This article will comprehensively highlight the composition, physical and mechanical properties, uses, heat treatment, and corrosion-resistant properties of AWS Class ERNiCrMo-10. Keep reading to better understand how it works and where it is used.

What is AWS Class ERNiCrMo-10?

AWS ERNiCrMo-10 is a nickel-chromium-molybdenum filler metal commonly used to join dissimilar steels in gas tungsten arc welding (GTAW). This material gives superior corrosion and heat resistance with high mechanical strength and ductility. Its combination of properties can provide welds that are creep resistant at temperatures up to 600°F (315°C), making it an excellent choice for applications involving steam piping, pressure vessels, boilers, heat exchangers and other components exposed to high-temperature environments. It also has good magnetic properties when cold worked, plus good conductivity resulting from the presence of chromium and nickel alloying elements. As such, ERNiCrMo-10 is often employed for electrodes in many electrical engineering structures and pipelines where strength is critical.

ERNiCrMo-10 Coated Wire Composition

AWS Class ERNiCrMo-10 is a nickel-chromium-molybdenum alloy classified under BNi-1, according to the American Welding Society. The composition creates fillet and overlay welds with excellent corrosion and good creep and oxidation resistance. The welding wire is often used on various nickel-chromium-molybdenum alloys in chemical processing, petrochemical, oil and gas, and power generation industries.

C Mn Fe P S Si Cu Ni Co Cr Mo V W Other
0.015 0.50 2.0-6.0 0.02 0.010 0.08 0.50 Rem 2.5 20.0-22.5 12.5-14.5 0.35 2.5-3.5 0.5

ERNiCrMo-10 Welding Wire Physical Properties

AWS Class ERNiCrMo-10 has a melting range of 2,467-2,552°F (1,350-1,400 °C) and 8.64 g/cm³ density. The alloy also has a thermal expansion coefficient of 9.0 µm/m.°C at 20-100°C, making it suitable for low-temperature applications. The welding electrode has stable properties at high temperatures, making it an ideal choice of metal to use in high-temperature environments.

ERNiCrMo-10 Coated Wire Mechanical Properties

The mechanical properties of AWS Class ERNiCrMo-10 coated electrode make it an exceptional metal for various applications. The alloy has a tensile strength of 88 ksi, while the yield strength is 42 ksi. The elongation percentage is 35%, which makes it easy to form the metal into different shapes and sizes. The metal is also malleable and has good toughness properties, as it can withstand high levels of impact and stress.

Tensile (psi) 100,000
Mpa 690
Elongation (%) 30

ERNiCrMo-10 Welding Wire Trade Name

Class UNS Oxford Alloys Special Metals SANDVIK BOHLER UTP SANDVIK

ERNiCrMo-10 Coated Wire Parameters

Diameter Process Volt Amps (flat) Amps (V/OH)
in (mm)
 .035 (0.9) GMAW 26-29 150-190 Spray Transfer 100% Argon
 .045  (1.2) GMAW  28-32 180-220  Spray Transfer 100% Argon
 1/16  (1.6) GMAW  29-33 200-250  Spray Transfer 100% Argon
 1/16  (1.6) GTAW  14-18 90-130  100% Argon
 3/32  (2.4) GTAW  15-20 120-175 100% Argon
 1/8  (3.2) GTAW  15-20 150-220  100% Argon

ERNiCrMo-10 Welding Wire Uses

AWS Class ERNiCrMo-10 filler wire finds use in various industries, including chemical processing, petrochemical, oil and gas, and power generation. It makes heat exchangers, pressure vessels, and petrochemical processing equipment. It is also used to manufacture gas turbines in the power generation industry.

ERNiCrMo-10 Coated Wire Heat Treatment

The heat treatment of AWS Class ERNiCrMo-10 is critical, as it helps improve the mechanical and physical properties of the welding wire. The alloy can be austenitized at temperatures between 1,900 and 2,000°F (1,035-1,090°C) for 1 hour per inch of thickness. The alloy can be air-cooled or rapidly cooled in water, depending on the application.

ERNiCrMo-10 Welding Wire Corrosion Resistant

One of the most remarkable features of AWS Class ERNiCrMo-10 is its corrosion-resistant properties. The welding alloy is used in various industries to create welds and overlays that can withstand corrosive environments. The alloy resists various corrosive substances such as sulfuric, hydrochloric, and phosphoric acids.


In conclusion, AWS Class ERNiCrMo-10 is a nickel-chromium-molybdenum alloy widely used in various industries for its exceptional properties. The alloy has excellent corrosive resistance, good mechanical properties, and high-temperature stability. AWS Class ERNiCrMo-10 finds application in manufacturing heat exchangers, petrochemical processing equipment, and gas turbines in the power generation industry. Knowing this welding wire’s composition, physical and mechanical properties, and uses will help you decide when to choose the right metal for your application.

Related Post