ERNiFeCr-1
1. Introducing the premium nickel-based welding wire, ERNiFeCr-1, a true marvel in the Ni-Cr-Fe-Mo-Cu system, crafted for high-performance excellence. This exceptional welding wire is the quintessential choice for tackling corrosive and extreme thermal environments with unmatched prowess. Esteemed in the welding industry, ERNiFeCr-1 proudly aligns with AWS classification A5.14 ERNiFeCr-1. It is also recognized as SNi8065 under ISO 18274 and corresponds to NiFe30Cr21Mo3 according to the European standard.
Key Advantages:
Corrosion Resistance: With superior performance in reducing media such as sulfuric and phosphoric acids, this welding wire exhibits remarkable resistance to stress corrosion cracking, pitting, and crevice corrosion, ensuring long-lasting durability.
Thermal Stability: Exhibiting exceptional mechanical integrity, ERNiFeCr-1 maintains its structure and performance from cryogenic temperatures up to a scorching 900°C, truly enduring the test of time.
Versatility: A true master of versatility, it is perfectly suited for welding dissimilar metals, including nickel alloys to steel, and excels in cladding operations, broadening its application spectrum.
2. Chemical Composition
Expertly engineered, ERNiFeCr-1's composition, detailed in Table 1, is meticulously optimized to ensure superior weld integrity and reliability.
High Nickel (38-46%) and Iron (≥22%): These elements collaboratively form a ductile matrix that skillfully balances thermal expansion with impressive strength.
Chromium (19.5-23.5%) and Molybdenum (2.5-3.5%): These components significantly enhance oxidation resistance and provide steadfast stability in environments containing chlorides and sulfides.
Low Carbon (≤0.05%) and Impurities: Strategically minimized to reduce the risks of intergranular corrosion, ensuring peak performance.
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: Demonstrating formidable strength, it achieves a tensile performance of ≥550 MPa, fully compliant with the AWS A5.14 minimum.
Elongation: Exhibiting superb ductility, it stretches to an impressive ~25-34%, accommodating dynamic stress with ease.
Impact Toughness: Designed for resilience, it retains robust properties even in harsh sub-zero environments, such as those found in cryogenic storage tanks.
4. Technical Standards and Certification
Governed by:
AWS A5.14/ASME SFA-5.14: This authoritative guideline mandates precise chemical and mechanical specifications.
ISO 18274: Embraced for its global standardization, known as SNi8065.
F-Number 45 (ASME IX): This classification qualifies essential welding procedures for pressure vessels, ensuring stringent quality.
Quality Control: Adheres to rigorous quality protocols, requiring Material Test Certificates (MTC) and successful completion of RT/PT nondestructive testing.
5. Applications
Primary Use: Specially engineered for welding INCOLOY 825 (UNS N08825) and similar Ni-Fe-Cr-Mo-Cu alloys, delivering unparalleled results.
Critical Industries:
Petrochemical: Ideal for reactors and acid-processing equipment, ensuring reliability under extreme conditions.
Nuclear: An indispensable choice for steam generator tubes and pressure vessels, providing critical safety and performance.
Aerospace: Vital for turbine components, expertly crafted to withstand the rigors of thermal cycling.
6. Welding Process Guidelines
Methods:
TIG (GTAW): Employing 100% argon shielding, it is the method of choice for achieving precision joints, especially in delicate applications such as thin tubes. Ideal for precision joints (e.g., thin tubes).
MIG (GMAW): Achieve unparalleled performance with our MIG welding process by utilizing an argon-helium blend in a precise 75%-25% ratio. This powerful combination guarantees deeper penetration in thicker sections, ensuring exceptional weld quality and reinforcing the structural integrity of your projects.
Parameters Overview (Delve into Table 2 for meticulously detailed specifications):
Preheat/Cleaning: Elevate your welding success by meticulously removing all traces of oil and oxides through advanced mechanical or chemical cleaning methods. This critical step ensures a flawless, pristine surface, setting the stage for optimal welding performance.
Interpass Temperature: Carefully maintain an interpass temperature of ≤150°C to deftly avoid the detrimental formation of carbide precipitation, safeguarding the weld's integrity and quality.
Table 2: Standardized Welding Parameters for Optimal Performance - Your comprehensive guide to achieving unmatched welding results.
Process Diameter (mm) Current (A) Voltage (V) Shielding Gas - The quintessential parameters for precision and excellence.
TIG 0.9-3.2 60-220 (DCEN) 12-20 100% Argon guarantees precise and controlled welding, delivering immaculate results every time.
MIG 0.9-1.6 150-250 26-33 75% Argon + 25% Helium - Designed for unparalleled penetration and welding stability, ensuring superior results.
Source: The fountain of authoritative and accurate information to guide your welding endeavors.
7. Procurement and Handling Guidelines - Streamline your process with our expert guidance on acquisition and management.
Packaging: Offered in versatile coils and spools with diameters from 0.8 to 5.0 mm, engineered for flexibility and convenience. Available in user-friendly 10-25 kg units, ensuring effortless handling and storage, aligning perfectly with your operational needs.
Storage: To preserve weld quality, ensure storage in a dry environment with humidity levels maintained below 60% to prevent moisture absorption.
8. Common Challenges & Their Effective Solutions - Tackle obstacles with confidence through our expert solutions.
Porosity: Typically arises from gas impurities, but worry not as solutions are at hand. → Utilize high-purity argon (99.99%) to effectively eliminate impurities, achieving flawless, impeccable welds with ease.
Hot Cracking: Mitigate risks by strategically employing low heat input and minimizing joint restraints, thereby ensuring the unwavering integrity of your welds.
| 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}