ERNiFeCr-1
1. Discover the superior craftsmanship of our nickel-based welding wire tailored specifically for high-performance tasks in environments that are both corrosive and subjected to extreme thermal conditions. This innovative Ni-Cr-Fe-Mo-Cu system is engineered to deliver unparalleled performance. Belonging to the esteemed AWS classification A5.14 ERNiFeCr-1, this product aligns seamlessly with its international counterparts, SNi8065 (ISO 18274) and NiFe30Cr21Mo3 (European standard), assuring you of its global quality and reliability.
Key Advantages:
Corrosion Resistance: Our welding wire stands out with its exceptional ability to withstand reducing media like sulfuric and phosphoric acids. It offers robust resistance against stress corrosion cracking, pitting, and crevice corrosion, ensuring longevity and reliability.
Thermal Stability: Designed to maintain mechanical integrity under a vast temperature range, from the harsh cold of cryogenic conditions to the blazing heat of up to 900°C, demonstrating its extraordinary durability.
Versatility: Perfectly suited for the welding of dissimilar metals, such as nickel alloys to steel, and excels in cladding operations, offering remarkable flexibility in various applications.
2. Chemical Composition
The chemical composition of ERNiFeCr-1, as illustrated in Table 1, has been meticulously optimized to ensure superior weld integrity and performance:
High Nickel (38-46%) and Iron (≥22%): These elements form a ductile matrix that expertly balances thermal expansion and provides strength, catering to robust applications.
Chromium (19.5-23.5%) and Molybdenum (2.5-3.5%): These vital components enhance both oxidation resistance and stability, particularly in challenging environments containing chlorides and sulfides.
Low Carbon (≤0.05%) and Impurities: The minimized presence of carbon and impurities significantly reduces risks of intergranular corrosion, offering peace of mind and extended longevity.
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 tensile strength surpassing 550 MPa, this product not only meets but exceeds AWS A5.14 minimum standards, guaranteeing exceptional performance.
Elongation: With an outstanding elongation range of approximately 25-34%, it exhibits excellent ductility, a testament to its elite engineering.
Impact Toughness: Even in sub-zero environments, such as cryogenic storage tanks, this welding wire retains its formidable properties, providing unmatched reliability.
4. Technical Standards and Certification
Governed by:
AWS A5.14/ASME SFA-5.14: These standards mandate stringent chemical and mechanical specifications, ensuring the highest quality.
ISO 18274: This global standardization under SNi8065 guarantees its widespread recognition and trust in the international market.
F-Number 45 (ASME IX): This classification qualifies our welding procedures specifically for pressure vessels, showcasing its specialized applicability.
Quality Control: To ensure excellence, every batch requires Material Test Certificates (MTC) and passes rigorous RT/PT nondestructive testing, cementing its superior quality.
5. Applications
Primary Use: Our welding wire excels in welding INCOLOY 825 (UNS N08825) and similar Ni-Fe-Cr-Mo-Cu alloys, serving as a cornerstone in various industrial applications.
Critical Industries:
Petrochemical: Perfect for reactors and acid-processing equipment, providing durability and resistance to harsh conditions.
Nuclear: Ideal for components like steam generator tubes and pressure vessels, where safety and reliability are paramount.
Aerospace: Excels in turbine components that are subject to thermal cycling, ensuring performance and safety.
6. Welding Process Guidelines
Methods:
TIG (GTAW): Utilizes 100% argon shielding, making it ideal for precise and high-quality joints, particularly in applications like thin tubing, where accuracy is crucial. ideal for precision joints (e.g., thin tubes) .
MIG (GMAW): Elevate your welding experience with our expertly curated argon-helium blend, optimally set at a 75%-25% ratio. This powerful combination is ideal for achieving superior penetration in thicker sections, ensuring robust weld quality that significantly enhances the structural integrity of your projects.
Parameters Overview: For a comprehensive understanding of our welding solutions, please refer to Table 2. This table provides detailed specifications that are crucial for optimizing your welding performance.
Preheat/Cleaning: Achieve pristine welding surfaces by thoroughly removing oils and oxides. Employ advanced mechanical or chemical cleaning methods to ensure a flawless base, paving the way for exceptional welding results and superior performance.
Interpass Temperature: Carefully maintain an interpass temperature not exceeding 150°C. This meticulous control is essential to prevent the formation of carbide precipitation, thereby safeguarding the integrity and durability of your welds.
Table 2: Delve into our Standardized Welding Parameters for achieving Optimal Performance. This table is your gateway to mastering the art of welding with precision and efficiency.
Process Diameter (mm) Current (A) Voltage (V) Shielding Gas
TIG 0.9-3.2 60-220 (DCEN) 12-20 100% Argon: Experience precise and controlled welding tailored to your exacting standards with our top-tier TIG setup.
MIG 0.9-1.6 150-250 26-33 75% Argon + 25% Helium: Benefit from enhanced penetration and stability, making every weld a masterpiece of engineering excellence.
Source:
7. Procurement and Handling Guidelines: Navigate the world of procurement and handling with our expert guidelines designed to streamline your operations.
Packaging: Our products are thoughtfully available in coils and spools with diameters ranging from 0.8 to 5.0 mm, catering to diverse needs and preferences. Available in convenient 10-25 kg units, our packaging ensures easy handling and storage, simplifying your logistical processes.
Storage: Safeguard your investment by storing in a dry setting with humidity levels kept below 60%. This precautionary measure prevents moisture absorption, preserving the quality and effectiveness of your welding materials.
8. Common Challenges & Their Effective Solutions: Equip yourself with effective strategies to tackle common welding challenges.
Porosity: Often induced by gas impurities, porosity can undermine your welding outcomes. → To achieve flawless welds free from impurities, ensure the use of high-purity argon at 99.99%. This commitment to quality is your key to excellence.
Hot Cracking: Mitigate the risk by utilizing low heat input and minimizing joint restraints, thus preserving the integrity and resilience 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 |
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