ERNiFeCr-1
1. Dive into the cutting-edge world of metallurgy with our nickel-based welding wire, crafted meticulously from a Ni-Cr-Fe-Mo-Cu system. This premium wire is engineered to deliver unmatched performance, even in the harshest and most corrosive or thermally extreme environments. This exceptional wire is classified under AWS A5.14 ERNiFeCr-1, and is also recognized as SNi8065 (ISO 18274) and NiFe30Cr21Mo3 (per European standards), ensuring global compatibility and reliability.
Key Advantages:
Corrosion Resistance: Our welding wire stands resilient against reducing media like sulfuric and phosphoric acids, and offers superior protection against stress corrosion cracking, pitting, and crevice corrosion.
Thermal Stability: Experience unwavering mechanical integrity from the coldest cryogenic environments to searing temperatures reaching up to 900°C.
Versatility: Perfectly suited for welding dissimilar metals, such as joining nickel alloys to steel, as well as for cladding operations, showcasing unmatched adaptability.
2. Chemical Composition
ERNiFeCr-1's meticulously designed composition (refer to Table 1) ensures exceptional weld integrity and performance.
High Nickel (38-46%) and Iron (≥22%): These elements combine to form a ductile matrix, offering an ideal balance of thermal expansion and strength.
Chromium (19.5-23.5%) and Molybdenum (2.5-3.5%): These vital components significantly enhance oxidation resistance and stability, particularly in environments rich in chlorides and sulfides.
Low Carbon (≤0.05%) and Impurities: Carefully controlled to minimize the risks of intergranular corrosion, ensuring long-lasting weld integrity.
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: Exhibiting robustness with a tensile strength of ≥550 MPa, meeting all AWS A5.14 minimum specifications.
Elongation: Demonstrates excellent ductility with an elongation rate of 25-34%, allowing for flexible and resilient joint formations.
Impact Toughness: Remains durable and maintains impact toughness, even in sub-zero environments, making it ideal for applications like cryogenic storage tanks.
4. Technical Standards and Certification
Governed by:
AWS A5.14/ASME SFA-5.14: These stringent standards mandate precise chemical and mechanical specifications, ensuring product excellence.
ISO 18274: Emphasizes global standardization with the designation SNi8065, guaranteeing international applicability.
F-Number 45 (ASME IX): Essential for qualifying welding procedures used in the fabrication of pressure vessels, signifying superior quality.
Quality Control: Each batch requires Material Test Certificates (MTC) and undergoes rigorous RT/PT nondestructive testing to ensure the highest quality standards.
5. Applications
Primary Use: Optimized for welding INCOLOY 825 (UNS N08825) and other similar Ni-Fe-Cr-Mo-Cu alloy compositions.
Critical Industries:
Petrochemical: Essential for reactors and acid-processing equipment, where reliability and resistance to harsh chemicals are paramount.
Nuclear: Integral for steam generator tubes and pressure vessels, where enduring performance is non-negotiable.
Aerospace: Ideal for crafting turbine components that endure rigorous thermal cycling, ensuring consistent performance.
6. Welding Process Guidelines
Methods:
TIG (GTAW): Recommended use with 100% argon shielding, perfect for achieving precision joints, especially in delicate structures like thin tubes. Ideal for precision joints (e.g., thin tubes).
MIG (GMAW): Elevate your welding performance with an argon-helium blend mixed in a dynamic 75%-25% ratio. This stellar combination offers unparalleled, deeper penetration in thicker sections, ensuring robust weld quality and the utmost structural integrity.
Parameters Overview: Dive into the specifics by referring to Table 2 for detailed specifications that guarantee optimal welding performance.
Preheat/Cleaning: Achieve pristine welding results by meticulously removing all traces of oil and oxides through either mechanical or chemical cleaning. This critical step sets the foundation for flawless surface preparation, ensuring optimal welding outcomes.
Interpass Temperature: Vigilantly maintain a temperature of ≤150°C to prevent carbide precipitation. This practice is pivotal in preserving the weld's integrity and ensuring exceptional quality.
Table 2: Standardized Welding Parameters for Optimal Performance - Your go-to resource for achieving peak welding efficiency.
Process Diameter (mm) Current (A) Voltage (V) Shielding Gas - The quintessential parameters for precision welding.
TIG 0.9-3.2 60-220 (DCEN) 12-20 100% Argon ensures precise and controlled welding, delivering artistry in every weld.
MIG 0.9-1.6 150-250 26-33 75% Argon + 25% Helium offers enhanced penetration and stability to master challenging welds.
Source: Your definitive guide and reference point for superior welding practices.
7. Procurement and Handling Guidelines - Navigate the essentials for seamless procurement and handling.
Packaging: Offered in versatile coils and spools with diameters from 0.8 to 5.0 mm, catering to diverse welding needs. Available in convenient 10-25 kg units, ensuring effortless handling and storage with each purchase.
Storage: Preserve weld quality by storing in a dry environment with humidity below 60%, safeguarding against moisture absorption.
8. Common Challenges & Their Effective Solutions - Navigate through potential hurdles with confidence and ease.
Porosity: Often a consequence of gas impurities, a challenge that can be expertly managed. → Ensure the use of high-purity argon (99.99%) to eradicate impurities and achieve impeccable, flawless welds.
Hot Cracking: Diminish this risk by utilizing low heat input and minimizing joint restraints, safeguarding the integrity of your welds.
| 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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