ERNiFeCr-1
1. Presenting a premium nickel-based welding wire: the Advanced ERNiFeCr-1 CO2 Welding Rod. Engineered from a sophisticated Ni-Cr-Fe-Mo-Cu system, it's meticulously crafted for high-performance in challenging, corrosive, and extreme thermal environments. This top-tier welding rod falls under AWS classification A5.14 ERNiFeCr-1, aligning seamlessly with SNi8065 (ISO 18274) and NiFe30Cr21Mo3 (European standard), ensuring global compliance.
Key Advantages:
Corrosion Resistance: Unparalleled performance in reducing media such as sulfuric and phosphoric acids, it stands strong against stress corrosion cracking, pitting, and crevice corrosion.
Thermal Stability: Designed to uphold mechanical integrity across a wide temperature spectrum, from cryogenic levels up to a robust 900°C.
Versatility: Expertly crafted for welding dissimilar metals such as nickel alloys to steel, making it ideal for cladding operations.
2. Chemical Composition
ERNiFeCr-1's expertly optimized composition (refer to Table 1) guarantees superior weld integrity:
Featuring High Nickel (38-46%) and Iron (≥22%): These elements create a ductile matrix, balancing thermal expansion with strength.
Chromium (19.5-23.5%) and Molybdenum (2.5-3.5%): These elements significantly enhance oxidation resistance and stability against chlorides and sulfides.
Low Carbon (≤0.05%) and Impurities: Designed to minimize risks of intergranular corrosion.
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: Achieves a formidable ≥550 MPa, fully meeting AWS A5.14 benchmarks.
Elongation: An impressive range of ~25-34%, highlighting its exceptional ductility.
Impact Toughness: Maintains robust properties even in sub-zero environments, perfect for cryogenic storage tanks.
4. Technical Standards and Certification
Governed by:
AWS A5.14/ASME SFA-5.14: Specifies stringent chemical and mechanical specifications.
ISO 18274: Ensures global standardization (SNi8065) compliance.
F-Number 45 (ASME IX): Authorizes welding procedures for pressure vessels.
Quality Control: Demands Material Test Certificates (MTC) and mandates passing of RT/PT nondestructive testing.
5. Applications
Primary Use: Specifically designed for welding INCOLOY 825 (UNS N08825) and analogous Ni-Fe-Cr-Mo-Cu alloys.
Critical Industries:
Petrochemical: Essential in reactors and acid-processing equipment.
Nuclear: Integral for steam generator tubes and pressure vessels.
Aerospace: Perfect for turbine components exposed to thermal cycling.
6. Welding Process Guidelines
Methods:
TIG (GTAW): Utilizes 100% argon shielding; Ideal for achieving precision joints, especially in thin tubes.
MIG (GMAW): To attain superior penetration, especially in thicker sections, integrate a blend of argon and helium in a finely tuned 75%-25% ratio. This precisely calibrated combination is pivotal for ensuring exceptional weld quality and reinforcing structural integrity.
Parameters Overview: Please refer to Table 2 for an exhaustive detailing of specifications, ensuring you have the most comprehensive understanding of our advanced welding parameters.
Preheat/Cleaning: Achieving an immaculate weld surface necessitates the complete removal of oil and oxides through both mechanical and chemical cleaning methods. This step is indispensable, setting the stage for superior welding outcomes.
Interpass Temperature: Vigilantly maintain a precise temperature of ≤150°C to prevent the detrimental formation of carbide precipitation, thereby safeguarding the weld's integrity and ensuring long-term durability.
Table 2: Standardized Welding Parameters for Optimal Performance.
Process | Diameter (mm) | Current (A) | Voltage (V) | Shielding Gas
TIG: Utilize diameters ranging from 0.9 to 3.2 mm, with a current of 60-220 (DCEN), and voltage between 12-20. Employ 100% Argon for meticulous and precisely controlled welding.
MIG: For rod diameters from 0.9 to 1.6 mm, apply a current of 150-250 and voltage of 26-33. The 75% Argon + 25% Helium mix ensures remarkable penetration and stability.
Source:
7. Procurement and Handling Guidelines: Delve into the strategic nuances of procurement and handling to optimize your supply chain processes.
Packaging: Our products are meticulously packaged in coils and spools with diameters ranging from 0.8 to 5.0 mm, providing versatility and reliability. Available in user-friendly 10-25 kg units, designed for seamless handling and efficient storage solutions.
Storage: Ensure storage in a dry environment with humidity strictly below 60% to avert moisture absorption, preserving the integrity and quality of the weld.
8. Common Challenges & Their Effective Solutions: Navigate and resolve common challenges with our expertly crafted solutions.
Porosity: Typically stems from gas impurities, yet resolvable with our guided solutions. → Guarantee the utilization of high-purity argon (99.99%) to eradicate impurities, ensuring flawless and impeccable welds.
Hot Cracking: Mitigate risks by adopting low heat inputs and minimizing joint restraints, thereby preserving weld integrity and resilience.
| 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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