MIG & TIG
Hastelloy X filler metal is used for the gas metal arc and gas tungsten arc welding of X alloy. The deposited weld metal has an exceptional combination of oxidation resistance, fabricability and high-temperature strength. It has also been found to be exceptionally resistant to stress-corrosion cracking in petrochemical applications. X alloy exhibits good ductility after prolonged exposure at temperatures of 1200, 1400, 1600°F (650, 760 and 870°℃) for 16,000 hours. The filler metal is also a good candidate for dissimilar welding between solid solution nickel based alloys and Ni-Fe-Cr alloys. The RTWM finish on the spooled wire promotes smooth feeding through welding equipment and reduced tip wear in contact tips.
In the realm of welding materials, ErNiCrMo-2 shines as a high-performance alloy designed to meet the rigorous demands of industries requiring exceptional corrosion resistance and high-temperature stability. This comprehensive article delves into the world of ErNiCrMo-2, exploring its composition, microstructure, mechanical properties, and diverse applications. From its inception to its present-day significance in industries such as petrochemical, aerospace, and marine engineering, this study unveils the remarkable attributes that make ErNiCrMo-2 a vital component in the arsenal of modern welding alloys.
Welding plays a pivotal role in modern industry, bridging the gap between materials to create structures and components of unparalleled complexity. Within this field, the choice of welding filler materials can be a make-or-break decision, especially in applications that demand resistance to extreme conditions. ErNiCrMo-2, a nickel-based welding alloy, stands as a testament to the relentless pursuit of excellence in welding technology. In this article, we embark on a comprehensive exploration of ErNiCrMo-2, uncovering its chemical composition, microstructural intricacies, mechanical attributes, and a diverse range of applications across industries.
Composition and Microstructure
To grasp the essence of ErNiCrMo-2, one must first understand its fundamental composition and microstructure. This alloy primarily consists of nickel (Ni) as its base element, with chromium (Cr), molybdenum (Mo), and a dash of rare earth element, erbium (Er), forming the alloy’s core constituents.
The microstructure of ErNiCrMo-2 reveals a fascinating mosaic of fine grains, precipitates, and intermetallic phases. These structural elements are carefully tailored through controlled heat treatments to confer unique properties on the alloy. The microstructural intricacies are the foundation of ErNiCrMo-2’s exceptional performance characteristics.
ErNiCrMo-2’s mechanical properties are at the heart of its appeal in welding applications, particularly in environments characterized by extreme temperatures and corrosive substances.
The tensile strength of ErNiCrMo-2, both at room temperature and elevated temperatures, is a key attribute. It is paramount to ensuring that welded joints remain intact and reliable even under the stresses of extreme conditions.
In high-temperature applications, materials are often subjected to prolonged stress, leading to creep deformation. ErNiCrMo-2 showcases an impressive resistance to creep, making it an ideal choice for components in industries such as petrochemicals and power generation.
Corrosion can be a significant threat in various industrial environments. ErNiCrMo-2 boasts remarkable corrosion resistance, offering longevity and reliability even in highly corrosive conditions. This property is crucial in marine and chemical processing applications.
- Provides an excellent combination of oxidation resistance, corrosion resistance and thermal shock resistance.
- The welding layer has high temperature strength and resists weld metal fatigue at temperatures up to 2200°F.
|Tensile (psi)||Mpa||Elongation (%)|
|0.035||0.9||GMAW||26-29||150-190||Spray Transfer 100% Argon|
|0.045||1.2||GMAW||28-32||180-220||Spray Transfer 100% Argon|
|1/16||1.6||GMAW||29-33||200-250||Spray Transfer 100% Argon|
|Wire For MIG/GMAW Welding||0.8mm /1.0mm /1.2mm /1.6mm /2.0mm /2.4mm /2.5mm /3.2mm||-||33 lbs (15kgs)|
|Rods For TIG/GTAW Welding||2.0mm /2.4mm /2.5mm /3.2mm /4.0mm /5.0mm||915mm- 1000mm||11 lbs (5kgs)|
|Wire For SAW Welding||2.0mm /2.4mm /2.5mm /3.2mm /4.0mm /5.0mm||-||60 lbs (27kgs)|
Safety precautions when working with ErNiCrMo-2
- Wear protective clothing. This includes long sleeves, pants, gloves, and face coverings.
- Work in a well-ventilated area. ErNiCrMo-2 emits fumes, which are harmful if inhaled.
- Avoid contact with the skin. If Hastelloy X filler metal comes into contact with your skin, wash immediately with soap and water.
- Do not weld or braze Hastelloy X filler metal in confined spaces. Smoke can accumulate and create a hazardous environment.
- Dispose of ErNiCrMo-2 correctly. Do not burn or bury it, as this may release harmful fumes.
By following these safety precautions, you can help ensure a safe and productive work environment.
It is important to note that while Hastelloy X filler metal is a commonly used filler metal, there may be other filler metals with similar or slightly different compositions designed for specific applications or to meet certain welding requirements. Therefore, it is always recommended to consult the relevant welding specifications and consult a welding expert to determine the filler metal best suited for a particular welding project.
What are the different forms of ErNiCrMo-2?
- Welding wire: This is the most common form of ErNiCrMo-2. It is used for welding nickel-based alloys such as Inconel and Hastelloy.
- Brazing Rod: This form of ErNiCrMo-2 is used for brazing nickel-based alloys. It is also used for brazing stainless steel and other metals.
- Filler Metal: This form of Hastelloy X filler metal is used to fill the gap between two pieces of metal. Often used for repairing high-temperature components.
- Powder: This form of ErNiCrMo-2 is used in additive manufacturing. It is also used in casting and other metalworking processes.
Hastelloy X filler metal is also available in sheet, strip, and rod form. These forms are typically used in applications requiring high strength and corrosion resistance.
The specific form of ErNiCrMo-2 you need depends on the application. For example, if you are welding a nickel-based alloy, you will need welding wire. If you are brazing stainless steel, you will need a brazing rod.
How do I weld or braze ErNiCrMo-2?
ErNiCrMo-2 can be welded or brazed using a variety of methods. The most common methods are:
- TIG Welding: TIG welding is a gas tungsten arc welding process that uses a non-consumable tungsten electrode to melt base metal and filler metal. TIG welding is a versatile process that can be used to weld a variety of materials, including ErNiCrMo-2.
- GMAW Welding: GMAW welding, also known as MIG welding, is a gas metal arc welding process that uses a consumable wire electrode to melt base metal and filler metal. GMAW welding is a fast and efficient process ideal for welding ErNiCrMo-2.
- Brazing: Brazing is a joining process that uses a filler metal that has a lower melting point than the base metal. The filler metal melts and flows into the joint, bonding the two pieces of metal together. Brazing is a good choice for welding ErNiCrMo-2 because it does not require melting of the base metal.
The specific welding or brazing method you use depends on the application. For example, if you are welding thin metal sheets, you will need to use the TIG welding process. If you are brazing a thick piece of metal, you will need a brazing process that uses a high-temperature filler metal.
It is worth noting that ErNiCrMo-2 is a relatively difficult material to weld or braze. This is because it has a high melting point and high thermal conductivity. Therefore, it is important to use the correct welding or brazing parameters to avoid melting of the base metal or cracking of the welded or brazed joint.
Tips for soldering or brazing ErNiCrMo-2:
Use high-quality filler metal compatible with ErNiCrMo-2.
- Use clean and well-prepared joints.
- Use the correct welding or brazing parameters.
- Closely monitor welded or brazed joints to avoid overheating.
- Use post-weld or post-braze heat treatment to improve the performance of welded or brazed joints.
By following these tips, you can help ensure that your weld or solder is strong, durable, and free of defects.
What form does Ernicrmo-2 come in?
ErNiCrMo-2 is a nickel-based alloy typically used for welding applications requiring high temperature and corrosion resistance. This alloy, also known as Hastelloy C-276, comes in various forms to suit different welding processes and applications. The most common forms of ErNiCrMo-2 or Hastelloy C-276 include:
Welding Wire: ErNiCrMo-2 welding wire is available in various diameters and spools for use in gas tungsten arc welding (GTAW or TIG) and gas metal arc welding (GMAW or MIG) processes. It is used to make high-temperature and corrosion-resistant welds on materials like stainless steel, other nickel alloys, and more.
Welding Electrodes: Welding electrodes made from ErNiCrMo-2 are designed for shielded metal arc welding (SMAW or stick welding). These electrodes are used for welding applications that require the high-temperature properties and corrosion resistance of Hastelloy C-276.
Welding Rods: ErNiCrMo-2 welding rods are used in oxyacetylene welding and brazing processes. These rods are suitable for joining or overlaying components where high-temperature resistance and corrosion resistance are essential.
Welding Flux-Cored Wire: Flux-cored wire made from ErNiCrMo-2 may also be available for applications that require high deposition rates and a high-quality weld bead. It is used in industries where Hastelloy C-276’s corrosion resistance is critical.
Powder: In specialized welding and additive manufacturing processes, ErNiCrMo-2 powder may be used. This form is often utilized in powder metallurgy techniques like laser powder bed fusion or electron beam melting.
Bars and Plate Stock: While ErNiCrMo-2 is primarily used in welding consumables, Hastelloy C-276 is available in the form of bars, plates, and other semi-finished products. These materials can be used to fabricate components and structures that require high-temperature and corrosion-resistant properties.
The choice of form depends on the specific welding process and application requirements. Hastelloy C-276, or ErNiCrMo-2, is well-regarded for its excellent resistance to a wide range of corrosive environments, including those containing acids, chlorides, and other aggressive chemicals. It is commonly used in industries such as chemical processing, oil and gas, and marine applications where corrosion resistance is crucial.
1. What is ErNiCrMo-2?
ErNiCrMo-2 is a nickel-based alloy designated for welding. It is characterized by its high nickel content and is designed for use in various welding applications.
2. What is the composition of ErNiCrMo-2?
ErNiCrMo-2 primarily consists of nickel (Ni), chromium (Cr), molybdenum (Mo), and tungsten (W). The exact composition may vary, but typical percentages are approximately 62% Ni, 22% Cr, 9% Mo, and 3% W, with trace amounts of other elements.
3. What are the main properties of ErNiCrMo-2?
ErNiCrMo-2 is known for its excellent resistance to corrosion and oxidation, even at elevated temperatures. It offers high strength and ductility, making it suitable for a wide range of welding applications.
4. What are the primary applications of ErNiCrMo-2?
ErNiCrMo-2 is used in various welding applications, including the welding of nickel-based alloys, stainless steels, and other high-alloy materials. It is often employed in industries such as aerospace, petrochemicals, and chemical processing.
5. Why is ErNiCrMo-2 used in welding applications?
ErNiCrMo-2 is chosen for its ability to provide strong, corrosion-resistant welds in challenging environments. It is particularly valuable in applications where resistance to heat and corrosion is crucial.
6. What types of welding processes are ErNiCrMo-2 suitable for?
ErNiCrMo-2 can be used in various welding processes, including gas tungsten arc welding (GTAW or TIG), gas metal arc welding (GMAW or MIG), and submerged arc welding (SAW). The choice of process depends on the specific welding requirements.
7. Is ErNiCrMo-2 suitable for high-temperature applications?
Yes, ErNiCrMo-2 is often used in high-temperature applications due to its excellent heat resistance and creep strength. It can maintain its properties at elevated temperatures.
8. Does ErNiCrMo-2 have good resistance to corrosion?
Yes, ErNiCrMo-2 is highly corrosion-resistant, especially in environments containing acids, alkalis, and oxidizing agents. This property makes it well-suited for welding components in chemical processing and similar industries.
9. Is preheating required when using ErNiCrMo-2 for welding?
Preheating may be necessary for certain applications to minimize thermal stress and ensure good weld quality. The specific preheating requirements depend on the base materials and welding conditions.
10. Can ErNiCrMo-2 be used for dissimilar metal welding?
Yes, ErNiCrMo-2 is often used for dissimilar metal welding, such as joining stainless steel to nickel-based alloys. It provides a strong and corrosion-resistant bond between different materials.
11. What is the availability of ErNiCrMo-2 in terms of forms and sizes?
ErNiCrMo-2 is available in various forms, including welding wires and electrodes. The specific forms and sizes can vary depending on the supplier and application requirements.
12. What safety precautions should be taken when working with ErNiCrMo-2 in welding applications?
As with any welding process, safety precautions, including proper ventilation, protective equipment, and safe handling of materials, should be followed to ensure the safety of personnel.