ThePipingMart Blog Welding Electrodes AWS Class ERNICRMO-14 Coated Rod – Composition, Properties, and Uses

AWS Class ERNICRMO-14 Coated Rod – Composition, Properties, and Uses

AWS Class ERNICRMO-14

Nickel-based alloys are the materials of choice in high-temperature and corrosive environments. AWS Class ERNICRMO-14 is a nickel-based filler metal that has gained popularity due to its excellent corrosion resistance and high-temperature performance. In this blog post, we’ll explore what AWS Class ERNICRMO-14 is, its composition, physical and mechanical properties, heat treatment, and how it is used in various applications.

What is AWS Class ERNICRMO-14?

AWS Class ERNICRMO-14 welding is an automated, semi-automated and manual process of combining two metals utilizing a filler material using an electrical arc with heat. This process creates an electric arc between the filler metal pieces that produces sufficient heat to melt them to merge or fuse with one another and form a strong joint. It’s used in numerous industrial applications, including pipelines, pressure vessels, shipbuilding, etc. With its superior strength and versatility, AWS Class ERNICRMO-14 welding alloy is becoming an increasingly popular choice for all welded structures.

ERNICRMO-14 Coated Rod Composition

AWS Class ERNICRMO-14 consists of varying proportions of nickel, chromium, molybdenum, and tungsten. The composition of the filler metal is optimized to improve its resistance to pitting, crevice corrosion, and stress corrosion cracking. The chemical composition of AWS Class ERNICRMO-14 meets the AWS A5.14/A5.14M standard.

C Mn Fe P S Si Cu Ni Co Cr Mo V W Other
0.02 1.0 4.0-7.0 0.04 0.03 0.08 0.50 Rem 2.5 14.5-16.5 15.0-17.0 0.35 3.0-4.5 0.5

ERNICRMO-14 Welding Rod Physical Properties

AWS Class ERNICRMO-14 has a density of 8.22 g/cm3. It has a melting range of 1320°C to 1390°C and a specific heat capacity of 450 J/kg·K. These properties are critical in the selection of filler metals for welding applications. AWS Class ERNICRMO-14 boasts a low coefficient of thermal expansion, making it ideal for critical welding applications that require minimal distortion.

ERNICRMO-14 Coated Rod Mechanical Properties

AWS Class ERNICRMO-14 coated electrode has exceptional strength and flexibility at elevated temperatures. The filler metal’s tensile strength ranges from 590 to 690 MPa, while its yield strength is 245 to 415 MPa. AWS Class ERNICRMO-14 offers good toughness and flexibility at low temperatures, making it ideal for cryogenic applications.

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

ERNICRMO-14 Welding Rod Trade Name

Class UNS Oxford Alloys Special Metals SANDVIK BOHLER UTP ESAB
ERNiCrMo-4 N10276 Alloy C-276 INCOWELD C-276 EXATON NI 56 BOHLER THERMANIT NIMO C276 UTP A 776 OK AUTROD NICRMO-4

ERNICRMO-14 Coated Rod 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-14 Welding Rod Uses

AWS Class ERNICRMO-14 is primarily used in gas turbine engine components subjected to high-temperature and corrosive environments. It is also used in chemical processing equipment, heat exchangers, and furnace components. The filler metal is suitable for welding nickel-based alloys such as Inconel 600, Incoloy 800, and Monel 400.

ERNICRMO-14 Coated Rod Heat Treatment

AWS Class ERNICRMO-14 is generally annealed at 1100°C to 1150°C for one hour per inch of thickness, followed by air cooling. This heat treatment process prevents intergranular corrosion, stress corrosion cracking, and sensitization. When AWS Class ERNICRMO-14 is used for high-temperature welding applications, stress-relief annealing is also required.

ERNICRMO-14 Welding Rod Corrosion Resistance

AWS Class ERNICRMO-14 has exceptional corrosion resistance to various acids, alkalis, and salts. The filler metal exhibits high resistance to pitting, crevice corrosion, and stress corrosion cracking. It is also resistant to intergranular corrosion and oxidation at high temperatures. These properties make AWS Class ERNICRMO-14 the preferred filler metal in corrosive environments.

Conclusion:

AWS Class ERNICRMO-14 is a nickel-based filler metal with excellent corrosion resistance and high-temperature performance. The filler metal’s chemical composition, physical and mechanical properties, heat treatment, and corrosion resistance make it ideal for welding applications in harsh environments. AWS Class ERNICRMO-14 is widely used in gas turbine engine components, chemical processing equipment, heat exchangers, and furnace components. Understanding the properties and applications of AWS Class ERNICRMO-14 is crucial in selecting the right filler metal for the job.

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