ERNiFeCr-1
1.It is a nickel-based welding wire (Ni-Cr-Fe-Mo-Cu system) meticulously crafted for outstanding performance in highly corrosive and extreme thermal environments, providing durability and reliability where it's most needed. This superior product belongs to the AWS classification A5.14 ERNiFeCr-1, sharing its prestige with SNi8065 (ISO 18274) and NiFe30Cr21Mo3 (European standard), ensuring global compatibility and trust.
Key Advantages:
Corrosion Resistance: Demonstrates exceptional resilience in reducing media, including sulfuric and phosphoric acids, and skillfully counters stress corrosion cracking, pitting, and crevice corrosion, safeguarding your applications.
Thermal Stability: Ensures remarkable mechanical integrity from the coldest cryogenic temperatures up to a scorching 900°C, offering unparalleled stability across diverse conditions.
Versatility: Perfectly adaptable for welding dissimilar metals, such as nickel alloys to steel, as well as for complex cladding operations, making it a versatile choice for varied welding needs.
2. Chemical Composition
The composition of ERNiFeCr-1 (refer to Table 1) is expertly optimized to guarantee exceptional weld integrity:
High Nickel (38-46%) and Iron (≥22%): Create a ductile matrix that harmonizes thermal expansion with strength, ensuring robust welds.
Chromium (19.5-23.5%) and Molybdenum (2.5-3.5%): Elevate oxidation resistance and offer formidable stability against chlorides and sulfides, essential for demanding environments.
Low Carbon (≤0.05%) and minimal impurities: These key features significantly reduce the risks of intergranular corrosion, enhancing the longevity and reliability of 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:
Tensile Strength: An impressive ≥550 MPa, meeting and exceeding the stringent AWS A5.14 requirements, delivering reliable performance.
Elongation: An outstanding ~25-34%, showcasing exceptional ductility and adaptability.
Impact Toughness: Maintains optimal properties even in frigid sub-zero conditions, perfect for cryogenic storage tanks and similar environments.
4. Technical Standards and Certification
Governed by:
AWS A5.14/ASME SFA-5.14: Dictates rigorous chemical and mechanical specifications to ensure top-tier performance.
ISO 18274: Represents global standardization with SNi8065, reinforcing international compliance and quality.
F-Number 45 (ASME IX): Authorizes welding procedures for critical pressure vessels, ensuring adherence to high safety standards.
Quality Control: Enforced through Material Test Certificates (MTC) and subjected to RT/PT nondestructive testing to confirm integrity and safety.
5. Applications
Primary Use: Specifically engineered for welding INCOLOY 825 (UNS N08825) and comparable Ni-Fe-Cr-Mo-Cu alloys, assuring compatibility and performance.
Critical Industries:
Petrochemical: Essential for reactors and acid-processing equipment, where resilience is paramount.
Nuclear: Integral for steam generator tubes and pressure vessels, contributing to nuclear safety and efficiency.
Aerospace: Indispensable for turbine components subjected to thermal cycling, ensuring longevity and reliability in critical aerospace applications.
6. Welding Process Guidelines
Methods:
TIG (GTAW): Utilizes 100% argon shielding, making it ideal for precision joints, particularly in fine-detail applications like thin tubes. ideal for precision joints (e.g., thin tubes) .
MIG (GMAW): Unlock the potential of your welding projects by opting for a specialized argon-helium blend at a 75%-25% ratio. This carefully crafted mixture offers superior, deeper penetration in thicker sections, ensuring robust weld quality and unmatched structural integrity.
Parameters Overview (Refer to Table 2 for detailed specifications): Discover the key factors that contribute to the excellence in welding performance, as outlined in the comprehensive specifications.
Preheat/Cleaning: Elevate your welding outcomes by meticulously eradicating any traces of oil and oxides through advanced mechanical or chemical cleaning methods. This critical step establishes a pristine surface, setting the foundation for optimal welding results.
Interpass Temperature: Diligently maintain a precise temperature of ≤150°C to prevent the detrimental formation of carbide precipitation. This vigilant control is essential for safeguarding the weld's integrity and achieving superior results.
Table 2: Standardized Welding Parameters for Optimal Performance: Delve into the detailed specifications that guide you towards achieving unparalleled welding success.
Process Diameter (mm) Current (A) Voltage (V) Shielding Gas: Explore the parameters that define excellence in welding, from diameters to shielding gases.
TIG 0.9-3.2 60-220 (DCEN) 12-20 100% Argon: Achieve precision and control in welding with this specification designed for extraordinary craftsmanship.
MIG 0.9-1.6 150-250 26-33 75% Argon + 25% Helium: Elevate penetration and stability with this expertly curated combination that redefines welding excellence.
Source:
7. Procurement and Handling Guidelines: Follow these essential guidelines to ensure efficient procurement and handling of your welding materials.
Packaging: Available in coils and spools with diameters ranging from 0.8 to 5.0 mm; Choose the packaging that best suits your welding needs for seamless integration into your projects. Available in convenient 10-25 kg units for easy handling and storage: Streamline your process with our user-friendly packaging options, designed for effortless storage and handling.
Storage: Preserve the quality of your welds by storing in a dry environment with humidity levels below 60%. This precaution prevents moisture absorption that could adversely affect weld quality.
8. Common Challenges & Their Effective Solutions: Navigate through common welding challenges and discover effective solutions to ensure flawless results.
Porosity: Often a result of gas impurities: Tackle the challenge of porosity by identifying and eliminating impurities at the source. → Ensure the use of high-purity argon (99.99%) to eliminate impurities and achieve flawless welds: Guarantee exceptional weld quality by employing high-purity argon, ensuring a pristine and defect-free welding process.
Hot Cracking: Reduce the risk by employing low heat input and minimizing joint restraints to maintain weld integrity: Protect against hot cracking by optimizing heat input and joint constraints, preserving the integrity of your welds for superior outcomes.
| 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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