ERNiFeCr-1
1.It is a nickel-based welding wire (Ni-Cr-Fe-Mo-Cu system) meticulously crafted for high-performance applications in corrosive and extreme thermal environments, making it an ideal choice for professionals seeking reliability and excellence. It belongs to AWS classification A5.14 ERNiFeCr-1 and stands synonymous with SNi8065 (ISO 18274) and NiFe30Cr21Mo3 (European standard), offering a trusted and globally recognized solution in the welding industry.
Key Advantages:
Corrosion Resistance: This welding wire excels in harsh reducing media like sulfuric and phosphoric acids, offering robust resistance against stress corrosion cracking, pitting, and crevice corrosion. A dependable choice for critical environments.
Thermal Stability: Designed to maintain mechanical integrity across a broad temperature range, from cryogenic levels up to 900°C, ensuring performance when it matters most.
Versatility: Perfectly suited for welding dissimilar metals such as nickel alloys to steel, and ideal for cladding operations, this wire ensures adaptability and strength in diverse applications.
2. Chemical Composition
ERNiFeCr-1's composition is expertly optimized for weld integrity, ensuring robust joint performance across demanding conditions (see Table 1):
High Nickel (38-46%) and Iron (≥22%): These elements form a ductile matrix, striking a fine balance between thermal expansion and mechanical strength for reliable welds.
Chromium (19.5-23.5%) and Molybdenum (2.5-3.5%): Enhance oxidation resistance and provide stability in environments with chlorides and sulfides, offering a dependable barrier against degradation.
Low Carbon (≤0.05%) and Impurities: Carefully minimized to reduce the risk of intergranular corrosion, ensuring long-lasting weld quality.
Table 1: Chemical Composition (Weight %)
Element Ni Fe Cr Mo Cu Mn Si Others
Range 38-46% ≥22% 19.5-23.5% 2.5-3.5% 1.5-3.0% ≤1% ≤0.5% Ti:0.6-1.2%; Al≤0.2%
Source:3. Mechanical Properties
As-Welded Performance:
Tensile Strength: With a robust tensile strength of ≥550 MPa, it meets AWS A5.14 standards, ensuring durable and reliable welds.
Elongation: Offers excellent ductility with elongation ranging from ~25-34%, ensuring flexibility and resilience in application.
Impact Toughness: Maintains vital mechanical properties even in sub-zero environments, such as those found in cryogenic storage tanks, providing a trusted solution for extreme conditions.
4. Technical Standards and Certification
Governed by:
AWS A5.14/ASME SFA-5.14: These standards mandate critical chemical and mechanical specifications, ensuring consistent quality and performance.
ISO 18274: Offers global standardization under SNi8065, giving confidence to users worldwide.
F-Number 45 (ASME IX): This certification qualifies welding procedures for pressure vessels, asserting its reliability in high-pressure applications.
Quality Control: Adheres to strict quality control measures requiring Material Test Certificates (MTC) and successful completion of RT/PT nondestructive testing.
5. Applications
Primary Use: Expertly designed for welding INCOLOY 825 (UNS N08825) and similar Ni-Fe-Cr-Mo-Cu alloys, ensuring exceptional compatibility and results.
Critical Industries:
Petrochemical: Essential for reactors and acid-processing equipment, providing durable solutions for chemical handling environments.
Nuclear: Ideal for steam generator tubes and pressure vessels, offering steadfast performance in high-stakes applications.
Aerospace: Perfect for turbine components exposed to thermal cycling, ensuring reliability in high-altitude operations.
6. Welding Process Guidelines
Methods:
TIG (GTAW): Utilizing 100% argon shielding, this method is ideal for achieving precision joints, particularly in delicate applications such as thin tubes. Ideal for precision joints (e.g., thin tubes), ensuring high-quality, accurate welds.
MIG (GMAW): To achieve superior and deeper penetration in thicker sections, utilize an argon-helium blend in a 75%-25% ratio. This potent combination ensures that your weld quality is robust, enhancing the structural integrity and longevity of the welds.
Parameters Overview (Refer to Table 2 for detailed specifications): Discover the precise guidelines to elevate your welding efficiency to professional standards.
Preheat/Cleaning: Ensure optimal welding results by meticulously eliminating any traces of oil and oxides. Utilize either mechanical or chemical cleaning methods to guarantee a pristine surface, providing a flawless foundation for welding.
Interpass Temperature: Vigilantly maintain a temperature of ≤150°C to prevent the formation of undesirable carbide precipitation, safeguarding the weld's structural integrity and quality.
Table 2: Standardized Welding Parameters for Optimal Performance: Delve into the essential parameters ensuring excellence in your welding endeavors.
Process Diameter (mm) Current (A) Voltage (V) Shielding Gas: Your quick reference guide to achieving superior welding outcomes.
TIG 0.9-3.2 60-220 (DCEN) 12-20 100% Argon: For precise and controlled welding, ensuring accuracy and finesse in every weld.
MIG 0.9-1.6 150-250 26-33 75% Argon + 25% Helium: Experience enhanced penetration and stability for flawless weld finishes.
Source: Your go-to reference for all foundational welding knowledge and best practices.
7. Procurement and Handling Guidelines: Ensure seamless operations with guidelines crafted for efficiency and effectiveness.
Packaging: Available in coils and spools with diameters ranging from 0.8 to 5.0 mm, tailored to meet diverse operational needs; Available in convenient 10-25 kg units, designed for easy and efficient handling and storage, facilitating resource management.
Storage: Store in a dry environment with humidity levels below 60% to prevent moisture absorption, thus maintaining the superior quality of welds.
8. Common Challenges & Their Effective Solutions: Navigate through challenges with expert solutions ensuring consistent welding excellence.
Porosity: Often a byproduct of gas impurities, → Ensure the utilization of high-purity argon (99.99%) to eradicate impurities, achieving seamless and flawless welds.
Hot Cracking: Mitigate risks by employing low heat input and minimizing joint restraints, thus preserving the integrity and quality of the weld.
| AWS A5.4 |
ERNi-1 |
ERNiCu-7 |
ERNiCr-3 |
ERNiCrFe-5 |
ERNiCrMo-3 |
ERNiCrMo-4 |
ERNiCrMo-7 |
| TS(N/mm2) |
460 |
541 |
671 |
560 |
790 |
729 |
780 |
| EL(%) |
30 |
39 |
39 |
30 |
43 |
33 |
35 |
| C |
0.02 |
0.02 |
0.03 |
0.03 |
0.0037 |
0.002 |
0.05 |
| Mn |
0.3 |
1.7 |
3.05 |
1 |
0.03 |
0.12 |
0.6 |
| Si |
0.16 |
0.44 |
0.37 |
0.04 |
0.029 |
0.07 |
0.02 |
| P |
0.0012 |
0.007 |
/ |
0.004 |
0.003 |
0.003 |
0.003 |
| Ti |
2.3 |
/ |
0.01 |
/ |
0.088 |
/ |
/ |
| S |
0.005 |
0.008 |
/ |
0.002 |
0.001 |
0.0015 |
|
| Cr |
/ |
/ |
19.86 |
15.7 |
21.95 |
15.9 |
16.7 |
| Ni |
96.5 |
65.68 |
72.8 |
75.06 |
64.65 |
REM |
REM |
| Cu |
/ |
REM |
0.06 |
0.03 |
0.009 |
0.008 |
/ |
| Mo |
/ |
/ |
/ |
0.03 |
9.04 |
15.9 |
15.8 |
| Nb |
/ |
/ |
2.4 |
2.3 |
3.61 |
/ |
/ |
| V |
/ |
/ |
/ |
/ |
/ |
0.01 |
/ |
| Fe |
/ |
0.7 |
0.23 |
7.9 |
0.19 |
4.12 |
2.2 |
Audited Supplier 
){kind=link}