When welding, the right alloy is crucial to ensure the final product is strong and reliable. AWS Class ENiCrMo-13 is an alloy widely used in welding and known for its excellent heat and corrosion resistance. In this blog post, we’ll take an in-depth look at what AWS Class ENiCrMo-13 is, its composition, physical and mechanical properties, heat treatment, corrosion resistance and uses.
What is AWS Class ENiCrMo-13?
AWS Class ENiCrMo-13 Welding material (Electro-Slag Remelted Nickel Chromium-Molybdenum 13) is a welding electrode produced from a combination of nickel, chromium, and molybdenum. These materials combine to form an alloy with excellent corrosion resistance and mechanical properties at elevated temperatures. The electro-slag remelting process further purifies the metal by eliminating impurities that can cause weld defects. This welding electrode performs superior to other filler metals when joining similar or dissimilar alloys like stainless steel and nickel base alloys such as Inconel 600, 601 or 625. Furthermore, ENiCrMo-13 welding electrode provides exceptionally low levels of hydrogen pickup, making it ideal for harsh temperature conditions used in chemical processing plants.
ENiCrMo-13 Welding Electrode Composition
The composition of AWS Class ENiCrMo-13 is as follows:
| C ≤ |
Si ≤ |
Mn ≤ |
P ≤ |
S ≤ |
Cr | Ni |
|---|---|---|---|---|---|---|
| 0.02 | 0.2 | 1.0 | 0.015 | 0.01 | 22-24 | … |
ENiCrMo-13 Coated Electrode Physical Properties
The physical properties of AWS Class ENiCrMo-13 include the following:
- Density – 8.28 g/cm3
- Melting Point – 1345°C
- Thermal Expansion – 13.6 µm/m°C
- Electrical Conductivity – 14.1 %IACS
- Specific Heat Capacity – 428 J/kg°C
ENiCrMo-13 Welding Rod Mechanical Properties
The mechanical properties of AWS Class ENiCrMo-13 filler wire include the following:
| UTS | Elongation |
| (MPa) | (L= 4d)% |
| 720 | 28.0 |
ENiCrMo-13 Coated Electrode Trade Names
| Class | UNS | Oxford Alloys | SANDVIK | UTP | ESAB |
| ENiCrMo-13 | N06059 | Alloy 59 | SANDVIK EXATON NI59/ EXATON NICRMO-13 | UTP A 79 | OK AUTROD NICRMO-13 |
AWS Class ENiCrMo-13 Welding Rod Parameters
| Diameter | Length | Amperage | |
| Flat | Vertical & Overhead | ||
| 3/32” | 12” | 70-85 | 65-75 |
| 1/8” | 14” | 85-110 | 80-90 |
| 5/32” | 14” | 110-140 | 110-120 |
| 3/16” | 14” | 120-160 | 110-130 |
ENiCrMo-13 Welding Alloy Uses
AWS Class ENiCrMo-13 welding electrode is used in a variety of applications, including:
- Welding high-alloy steels
- Welding of nickel-based alloys
- Welding of heat-resistant alloys
- Welding of pressure vessels and pipes
- Repair of gas turbine blades and vanes
ENiCrMo-13 Coated Electrode Heat Treatment
AWS Class ENiCrMo-13 electrode can be heat-treated to improve its mechanical properties. The recommended heat treatment for this alloy is a solution anneal at 1150°C, followed by air cooling. The alloy can also be age-hardened by heating at 760-845°C for 8 hours, followed by air cooling.
ENiCrMo-13 Welding Alloy Corrosion Resistance
AWS Class ENiCrMo-13 offers excellent corrosion resistance in a variety of environments. It is highly resistant to sulfuric acid, hydrochloric acid, and nitric acid corrosion. This makes it ideal for chemical processing, oil and gas, and other corrosive environments.
Conclusion
AWS Class ENiCrMo-13 is a versatile and reliable alloy widely used in welding applications. Its unique composition allows for excellent corrosion and heat resistance, making it ideal for high-stress environments. Its mechanical properties can be improved through heat treatment, and its uses include welding high-alloy steels, nickel-based alloys, heat-resistant alloys, and more. With its excellent corrosion resistance, AWS Class ENiCrMo-13 is a go-to alloy for chemical processing, oil and gas, and other corrosive environments.
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.
