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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 works by creating an electric arc between the metal pieces that produces sufficient heat to melt them so that they can 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 is becoming an increasingly popular choice for all welded structures.
AWS Class ERNICRMO-14 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 |
AWS Class ERNICRMO-14 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.
AWS Class ERNICRMO-14 Mechanical Properties
AWS Class ERNICRMO-14 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 |
AWS Class ERNICRMO-14 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 |
AWS Class ERNICRMO-14 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 |
AWS Class ERNICRMO-14 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.
AWS Class ERNICRMO-14 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.
AWS Class ERNICRMO-14 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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