ERNiFeCr-1
1. This remarkable nickel-based welding wire, belonging to the Ni-Cr-Fe-Mo-Cu system, is meticulously engineered for robust performance in environments characterized by corrosive and extreme thermal conditions. It aligns seamlessly with the AWS classification A5.14 ERNiFeCr-1, and is also recognized as SNi8065 according to ISO 18274 and as NiFe30Cr21Mo3 in the European standard, underscoring its universal quality and reliability.
Key Advantages:
Corrosion Resistance: This welding wire shows outstanding performance in reducing environments such as sulfuric and phosphoric acids, effectively resisting stress corrosion cracking, pitting, and crevice corrosion.
Thermal Stability: With an impressive ability to maintain mechanical integrity, it performs excellently from cryogenic temperatures all the way up to a robust 900°C.
Versatility: It is ideally suited for welding dissimilar metals, such as nickel alloys to steel, as well as performing cladding operations, showcasing its adaptability.
2. Chemical Composition
The composition of ERNiFeCr-1, detailed in Table 1, is carefully balanced to ensure weld integrity and exceptional performance:
High Nickel (38-46%) and Iron (≥22%): These elements form a ductile matrix that effectively balances thermal expansion with mechanical strength.
Chromium (19.5-23.5%) and Molybdenum (2.5-3.5%): These components significantly enhance oxidation resistance and provide stability in challenging environments, such as those containing chlorides and sulfides.
Low Carbon (≤0.05%) and Minimal Impurities: These specifications are crucial in minimizing the risk 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: Impressive at ≥550 MPa, meeting the rigorous AWS A5.14 minimum standards effortlessly.
Elongation: With a range of ~25-34%, it offers excellent ductility, ensuring flexibility in various applications.
Impact Toughness: This welding wire retains its robust properties even in sub-zero environments, making it ideal for use in cryogenic storage tanks and similar applications.
4. Technical Standards and Certification
Governed by:
AWS A5.14/ASME SFA-5.14: Specifies the stringent chemical and mechanical specifications that this welding wire must meet.
ISO 18274: Establishes its global standardization as SNi8065.
F-Number 45 (ASME IX): Qualifies this welding wire for use in welding procedures for pressure vessels, ensuring its safety and reliability.
Quality Control: It is essential for this product to come with Material Test Certificates (MTC) and pass rigorous RT/PT nondestructive testing to confirm its integrity.
5. Applications
Primary Use: Designed for welding INCOLOY 825 (UNS N08825) and other similar Ni-Fe-Cr-Mo-Cu alloys, making it indispensable for specific industrial needs.
Critical Industries:
Petrochemical: Ideal for reactors and acid-processing equipment, where durability and resistance are paramount.
Nuclear: Perfect for applications in steam generator tubes and pressure vessels, where stability under high stress is critical.
Aerospace: Suited to turbine components that are frequently exposed to thermal cycling, ensuring longevity and reliability.
6. Welding Process Guidelines
Methods:
TIG (GTAW): Employs 100% argon shielding, making it ideal for precision joints, such as those required for thin tubes. Ideal for precision joints, such as those required for thin tubes.
MIG (GMAW): Explore superior welding with deeper penetration in thicker sections through an expertly crafted argon-helium blend in a 75%-25% ratio. This dynamic combination guarantees robust weld quality and significantly enhances structural integrity, ensuring your projects stand the test of time.
Parameters Overview (Refer to Table 2 for comprehensive and detailed specifications):
Preheat/Cleaning: Master the art of surface preparation by meticulously eliminating any traces of oil and oxides. Utilize either advanced mechanical or chemical cleaning methods to ensure a pristine surface, paving the way for optimal welding results that meet the highest industry standards.
Interpass Temperature: Diligently maintain a controlled temperature of ≤150°C to meticulously prevent carbide precipitation. This careful management is essential to preserve the weld's integrity and deliver outstanding quality in your final product.
Table 2: Standardized Welding Parameters for Optimal Performance – Your guide to achieving peak performance and excellence in every weld.
Process Diameter (mm) Current (A) Voltage (V) Shielding Gas – Unleash precision and stability with these key parameters.
TIG 0.9-3.2 60-220 (DCEN) 12-20 100% Argon for precise, controlled, and immaculate welding artistry.
MIG 0.9-1.6 150-250 26-33 75% Argon + 25% Helium for superior penetration and unparalleled stability.
Source: Elevate your expertise with reliable and authoritative sources of information.
7. Procurement and Handling Guidelines – Navigate the path to seamless acquisition and handling.
Packaging: Discover versatility with coils and spools in diameters from 0.8 to 5.0 mm, tailored to meet diverse needs. Available in convenient 10-25 kg units, designed for effortless handling and streamlined storage solutions.
Storage: Ensure exceptional weld quality by storing materials in a dry environment with humidity levels below 60%, preventing moisture absorption that could affect outcomes.
8. Common Challenges & Their Effective Solutions – Overcome obstacles with confidence and precision.
Porosity: A challenge often posed by gas impurities, but not insurmountable. → Transform this challenge into an opportunity: Ensure the use of high-purity argon (99.99%) to entirely eliminate impurities and achieve flawless, exceptional welds.
Hot Cracking: Mitigate risks by utilizing low heat input and minimizing joint restraints, thereby maintaining exemplary weld integrity and performance.
| 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 |
Audited Supplier 
){kind=link}