ERNiFeCr-1
1. Discover the unparalleled excellence of our nickel-based welding wire, meticulously engineered from a sophisticated Ni-Cr-Fe-Mo-Cu system. This premium wire is your perfect ally for superior performance in the most challenging corrosive and extreme thermal environments. Proudly classified under AWS A5.14 ERNiFeCr-1, this product also carries the prestige of being synonymous with SNi8065 (ISO 18274) and NiFe30Cr21Mo3 (European standard), ensuring global recognition and standards compliance.
Key Advantages:
Corrosion Resistance: This exceptional product triumphs in reducing environments, such as sulfuric and phosphoric acids, showcasing formidable resistance against stress corrosion cracking, pitting, and crevice corrosion.
Thermal Stability: Preserve mechanical integrity across a dramatic range from cryogenic lows to searing highs up to 900°C, ensuring dependable performance.
Versatility: Perfectly suited for welding a variety of dissimilar metals, including nickel alloys to steel, as well as for demanding cladding operations.
2. Chemical Composition
ERNiFeCr-1's optimized composition (refer to Table 1) ensures outstanding weld integrity:
High Nickel (38-46%) and Iron (≥22%): Create a ductile matrix that harmonizes thermal expansion with strength.
Chromium (19.5-23.5%) and Molybdenum (2.5-3.5%): Augment oxidation resistance and reinforce stability in chloride/sulfide environments.
Low Carbon (≤0.05%) and Impurities: Effectively reduce 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: Achieve a robust ≥550 MPa, comfortably meeting and exceeding the minimum AWS A5.14 requirements.
Elongation: Demonstrates exceptional ductility with a range of ~25-34%.
Impact Toughness: Maintains resilient properties even in frigid sub-zero environments, ideal for cryogenic storage tanks.
4. Technical Standards and Certification
Governed by:
AWS A5.14/ASME SFA-5.14: Enforces rigorous chemical and mechanical specifications.
ISO 18274: Ensures worldwide standardization under SNi8065.
F-Number 45 (ASME IX): Certifies welding procedures for critical pressure vessels.
Quality Control: Demands Material Test Certificates (MTC) and successful RT/PT nondestructive testing approval.
5. Applications
Primary Use: Expertly designed for welding INCOLOY 825 (UNS N08825) and comparable Ni-Fe-Cr-Mo-Cu alloys.
Critical Industries:
Petrochemical: Essential for reactors and acid-processing equipment.
Nuclear: Integral to steam generator tubes and pressure vessels.
Aerospace: Ideal for turbine components subjected to thermal cycling.
6. Welding Process Guidelines
Methods:
TIG (GTAW): Employs 100% argon shielding; a prime choice for crafting precision joints in challenging scenarios such as thin tubes.
MIG (GMAW): Elevate your welding projects with unparalleled precision by utilizing an argon-helium blend with a 75%-25% ratio. This carefully crafted combination guarantees superior weld quality, providing deeper penetration in thicker sections and significantly enhancing the structural integrity of your final product.
Parameters Overview (For an in-depth understanding, refer to Table 2 for detailed specifications):
Preheat/Cleaning: Prepare your surface for exceptional welding results by meticulously eliminating any traces of oil and oxides. Achieve this through mechanical or chemical cleaning methods, ensuring a pristine, contamination-free surface that sets the stage for optimal welding outcomes.
Interpass Temperature: Carefully maintain an interpass temperature of ≤150°C. This precise control is crucial in preventing the formation of carbide precipitation, which could potentially undermine the weld's structural integrity.
Table 2: Standardized Welding Parameters for Optimal Performance - Your ultimate guide to achieving superior welding results.
Process Diameter (mm) Current (A) Voltage (V) Shielding Gas - The essential criteria for achieving excellence in welding outcomes.
TIG 0.9-3.2 60-220 (DCEN) 12-20 100% Argon - Delivering precise and controlled welding for a refined, professional finish.
MIG 0.9-1.6 150-250 26-33 75% Argon + 25% Helium - This blend provides enhanced penetration and stability for optimal welding performance.
Source:
7. Procurement and Handling Guidelines - Ensure seamless operations with our comprehensive guidelines.
Packaging: Our product is available in both coils and spools, with diameters ranging from 0.8 to 5.0 mm, offering flexibility and versatility to meet your diverse needs. Available in convenient 10-25 kg units, our packaging ensures easy handling and storage, streamlining your workflow.
Storage: Preserve the quality of your welding materials by storing them in a dry environment with humidity levels below 60%. This preventive measure is critical to avoiding moisture absorption that could compromise weld quality.
8. Common Challenges & Their Effective Solutions - Equip yourself with solutions that empower superior welding results.
Porosity: This issue often stems from gas impurities, which can be effectively addressed through strategic interventions. → Ensure the use of high-purity argon (99.99%). This critical step eliminates impurities and enables you to achieve flawless, impeccable welds.
Hot Cracking: Mitigate this risk by employing low heat input techniques and minimizing joint restraints. These strategies are vital to maintaining the weld's integrity and ensuring a robust, reliable finish.
| 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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