ERNiFeCr-1
1. Unveiling a Marvel in Welding Technology: The ERNiFeCr-1 is a remarkable nickel-based welding wire, engineered meticulously within the Ni-Cr-Fe-Mo-Cu system. Designed to tackle the challenges posed by corrosive and extreme thermal environments, it ensures top-tier performance in the most demanding conditions. Embrace the Highest Standards: This welding wire aligns with the prestigious AWS classification A5.14 ERNiFeCr-1. It's synonymous with SNi8065 (ISO 18274) and NiFe30Cr21Mo3 (European standard), guaranteeing compatibility and reliability across global standards.
Key Advantages: Discover the exceptional benefits that set this product apart from the rest.
Corrosion Resistance: Boasting superior resistance, this wire excels in reducing media such as sulfuric and phosphoric acids. It robustly withstands stress corrosion cracking, pitting, and crevice corrosion, offering unparalleled protection.
Thermal Stability: Experience unwavering performance as it retains mechanical integrity from freezing cryogenic temperatures all the way to a scorching 900°C.
Versatility: The ERNiFeCr-1 shines in welding dissimilar metals, like connecting nickel alloys to steel, and is perfect for cladding operations, showcasing its adaptability.
2. Chemical Composition
ERNiFeCr-1's composition is a masterpiece of engineering, meticulously optimized for flawless weld integrity, as detailed in Table 1.
High Nickel and Iron Content: With nickel ranging from 38-46% and iron at ≥22%, it forms a ductile matrix that harmonizes thermal expansion with strength, a true hallmark of quality.
Chromium and Molybdenum: Featuring chromium at 19.5-23.5% and molybdenum at 2.5-3.5%, this composition enhances oxidation resistance and stability in environments rich in chlorides and sulfides.
Low Carbon and Impurities: With carbon levels kept at a maximum of 0.05%, along with minimized impurities, it significantly reduces risks of intergranular corrosion, safeguarding your welds.
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: Witness the extraordinary mechanical prowess of ERNiFeCr-1.
Tensile Strength: With a strength of ≥550 MPa, it meets and exceeds AWS A5.14's rigorous minimum standards, ensuring durability and reliability.
Elongation: Offering an impressive elongation range of 25-34%, it delivers exceptional ductility, perfect for demanding applications.
Impact Toughness: Its capacity to retain properties even in sub-zero environments, such as cryogenic storage tanks, demonstrates its remarkable toughness.
4. Technical Standards and Certification
Governed by: Rest assured, this product adheres to the industry's highest standards.
AWS A5.14/ASME SFA-5.14: Dictates stringent chemical and mechanical specifications, ensuring quality and uniformity.
ISO 18274: Provides global standardization (SNi8065), affirming its universal applicability.
F-Number 45 (ASME IX): Comprehensive qualification for welding procedures, specifically tailored for pressure vessels.
Quality Control: Demands Material Test Certificates (MTC) and successfully passes rigorous RT/PT nondestructive testing, ensuring only the best.
5. Applications
Primary Use: Perfectly suited for welding INCOLOY 825 (UNS N08825) and similar Ni-Fe-Cr-Mo-Cu alloys, ideal for critical applications.
Critical Industries: Discover its indispensable role in various high-stakes industries.
Petrochemical: Essential for reactors and acid-processing equipment, withstanding harsh conditions with ease.
Nuclear: Integral to the safety and efficacy of steam generator tubes and pressure vessels, providing peace of mind.
Aerospace: Perfect for turbine components, enduring thermal cycling and maintaining integrity.
6. Welding Process Guidelines
Methods: Unlock the full potential of ERNiFeCr-1 with these expert-recommended methods.
TIG (GTAW): Utilize 100% argon shielding for pristine results, ideal for precision joints like thin tubes. meticulously crafted for precision and excellence in every weld.
MIG (GMAW): Elevate your welding prowess with our expertly recommended argon-helium blend, meticulously balanced at 75%-25%. This unrivaled combination promises superior penetration for thicker sections, guaranteeing robust weld quality and fortified structural integrity.
Parameters Overview: Dive into the intricate specifications detailed in Table 2 for a comprehensive understanding of optimal parameter settings.
Preheat/Cleaning: Embark on your welding journey by thoroughly eliminating any remnants of oil and oxides. Employ either mechanical or chemical cleaning methods to achieve an immaculate surface, ensuring unparalleled welding results.
Interpass Temperature: Diligently maintain the temperature at ≤150°C to prevent carbide precipitation. This is a critical step in preserving the weld's impeccable integrity.
Table 2: Discover the standardized welding parameters meticulously curated for achieving optimal performance in every weld.
Process Diameter (mm) Current (A) Voltage (V) Shielding Gas: Your guide to precision welding settings.
TIG: With diameters ranging from 0.9-3.2 mm, a current of 60-220 (DCEN), and a voltage span of 12-20 V, utilize 100% Argon for precise, controlled welding results.
MIG: Achieve enhanced penetration and stability by selecting diameters between 0.9-1.6 mm, currents of 150-250 A, and voltages of 26-33 V, accompanied by a 75% Argon + 25% Helium shield.
Source:
7. Procurement and Handling Guidelines: Essential insights for streamlined acquisition and handling.
Packaging: Choose from coils and spools with diameters from 0.8 to 5.0 mm, tailored for your specific welding needs. These are conveniently available in 10-25 kg units, ensuring easy handling and efficient storage.
Storage: Safeguard your materials by storing them in a dry environment with humidity levels below 60%. This precaution prevents moisture absorption, maintaining superior weld quality.
8. Common Challenges & Their Effective Solutions: Navigate challenges with confidence.
Porosity: Often stemming from gas impurities, this challenge can be expertly managed. → To achieve flawless welds, ensure the use of high-purity argon (99.99%), effectively eliminating impurities.
Hot Cracking: Mitigate this risk by employing low heat input and minimizing joint restraints, effectively preserving weld integrity and quality.
| 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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