The world of welding can seem daunting and confusing at first glance, with numerous technical terms and materials. AWS Class ENiCrFe-3 is a material used extensively in the welding industry. But what is it exactly? In this blog, we’ll dive deep into the various aspects of AWS Class ENiCrFe-3, including composition, physical and mechanical properties, uses, heat treatment, and corrosion resistance. Let’s get started!
What is AWS Class ENiCrFe-3 ?
AWS Class ENiCrFe-3 Welding Electrode is an alloy steel wire used for welding dissimilar metals, particularly in the repair of high-temperature components. It has excellent strength and toughness at elevated temperatures, good wear resistance and superior arc stability. The main advantages of using AWS Class ENiCrFe-3 welding alloy are that it can provide impact toughness down to -50°C, work hardening allows heavy gauge sections to be welded without preheating, and it has very little distortion or shrinkage due to its low carbon content. Furthermore, the weld deposit is resistant to cracking even when exposed to thermal shocks, such as rapid cooling after welding or quenching. This makes AWS Class ENiCrFe-3 an ideal choice for welding component repairs subject to extreme temperatures or conditions.
ENiCrFe-3 Weld Wire Composition
ENiCrFe-3 welding coated electrode is a nickel-based electrode mainly used for welding various grades of nickel-chromium-iron alloys to each other and welding these alloys to carbon steel. Its chemical composition includes 59% Ni, 19% Cr, 3.2% Fe, and a maximum of 0.1% carbon and 0.1% si.
ENiCrFe-3 Filler Metal Physical Properties
AWS Class ENiCrFe-3 coated electrode has good corrosion resistance due to its high nickel content and provides excellent mechanical properties, such as high tensile strength, fatigue resistance, and good flexibility. It has a melting point range of 1300-1350°C and a density of 8.3 g/cm³.
ENiCrFe-3 Welding Electrode Mechanical Properties
The mechanical properties of AWS Class ENiCrFe-3 welding alloy are impressive. It has a tensile strength of 758 MPa, yield strength of 512 MPa, and an elongation of 37%. Its toughness is also noteworthy, with a Charpy V-notch impact strength of >70 J/cm² at -196°C.
ENiCrFe-3 Welding Electrode Trade Names
|INCONEL WELDING ELECTRODE 182
|THERMANIT NICRO 182
|UTP 068HH /td>
|SANICRO 72HP / EXATON NI 71
ENiCrFe-3 Welding Alloy Parameters
ENiCrFe-3 Weld Wire Uses
ENiCrFe-3 weld wire is mainly used in the chemical processing, refinery, and petrochemical industries. It is used for welding heat-resistant nickel, chromium, and iron alloys. Due to its excellent corrosion resistance, it is also used in offshore platforms, heat exchangers, and acid tanks.
ENiCrFe-3 Welding Electrode Heat Treatment
The AWS Class ENiCrFe-3 coated Electrode can be used in the as-welded condition but heat-treated if necessary. Heat treatment generally involves annealing or solutionizing at 1000-1200°C for a few hours, followed by slow cooling in air, water, or oil. The heat treatment enhances the material’s mechanical properties.
ENiCrFe-3 Coated Electrode Corrosion Resistant
AWS Class ENiCrFe-3 filler metal electrode has excellent corrosion resistance to various corrosive environments, including acidic, alkaline, and chloride solutions. It is also resistant to stress corrosion, cracking, and pitting. As a result, it is commonly used in industrial applications where corrosion resistance is essential.
In conclusion, AWS Class ENiCrFe-3 welding alloy is a nickel-based electrode primarily used for welding nickel-chromium-iron alloys and carbon steel. It has excellent mechanical and physical properties and is widely preferred in the chemical processing, refinery, and petrochemical industries. Heat treatment can enhance its mechanical properties and has impressive corrosion resistance to several corrosive environments. We hope this blog has given you deep insights into the AWS Class ENiCrFe-3 and its various properties and uses.
A passionate metal industry expert and blogger. With over 5 years of experience in the field, Palak brings a wealth of knowledge and insight to her writing. Whether discussing the latest trends in the metal industry or sharing tips, she is dedicated to helping others succeed in the metal industry.