Products Description
"When welding chemical equipment, are you always worried about the medium corroding the weld? Do you always have cracks when welding dissimilar materials in seawater environment? ENi-1 pure nickel-based welding materials are specially designed for welding highly corrosive and dissimilar materials (steel/nickel/copper alloy) - the nickel content of more than 90% gives the weld excellent acid and alkali resistance, and the arc is stable without undercutting, which fundamentally solves the problem of 'leaking after welding and not lasting long'."
ENi-1 deposited metal chemical composition (%)
| Item | Ni | C | Mn | Si | S | P | Fe |
|---|---|---|---|---|---|---|---|
| Quality score (%) | 92.0~96.0 | ≤0.08 | 0.5~1.0 | 0.2~0.5 | ≤0.010 | ≤0.015 | ≤2.0 |
| AWS A5.11 standard | ≥90.0 | ≤0.15 | ≤1.0 | ≤0.5 | ≤0.015 | ≤0.020 | ≤2.0 |
| GB/T 13814 standard | ≥90.0 | ≤0.12 | ≤1.0 | ≤0.5 | ≤0.015 | ≤0.020 | ≤2.0 |
| Testing method | GB/T 223.53 | GB/T 223.69 | GB/T 223.63 | GB/T 223.5 | GB/T 223.68 | GB/T 223.59 | GB/T 223.70 |
| Core role | Leading corrosion resistance, strengthening acid and alkali / seawater corrosion resistance | Strictly control and reduce the risk of thermal cracking (47% lower than the standard) | Stabilize the arc and improve the fluidity of the molten pool | Balance deoxidation and low temperature toughness | Reduce thermal crack sensitivity (key indicator) | Adapt to low temperature scenarios to reduce brittle fracture | Control impurities to ensure chlorine resistance |
The above components are all the test results of deposited metal (not weld core components), which are consistent with the actual use status of the welded joint.
ENi-1 deposited metal mechanical properties
| Performance indicators |
Test results (deposited metal) |
AWS A5.11 standard requirements |
Working condition adaptation and core advantages |
|---|---|---|---|
| Tensile strength (σb) | 500~550 MPa | ≥480 MPa | Suitable for pressure vessels/chemical pipelines below 10MPa, 4%~14% higher than the standard, with stronger resistance to pressure fluctuations |
| Yield strength (σ0.2) | 180~220 MPa | ≥170 MPa | Meet long-term static load scenarios (such as equipment brackets) to avoid "creep" deformation after long-term stress |
| Elongation (δ₅) | 32%~35% | ≥25% | Adapt to vibration/thermal expansion and contraction scenarios (fan base), 28% higher than the standard, better plasticity, and can absorb stress through deformation |
| Impact absorption energy (AkV) | 65~75 J(-40℃) | ≥40 J(-20℃) | Specially used for cryogenic storage tanks/polar pipelines, impact toughness at -40℃ exceeds the standard by 62%, avoiding low-temperature brittle fracture |
| Hardness (HV10) | 130~150 HV | -- | Adapt to post-welding machining scenarios, moderate hardness, and reduce tool wear |
The above data are the test results of the 'post-welding state' (without heat treatment). If the customer requires 'post-welding stress relief heat treatment' (such as 650℃×2h), the mechanical properties data under the corresponding state can be provided (tensile strength retention rate ≥95%)
Products Description
FAQ
Q: What is a nickel welding rod used for?
A: Nickel welding rods are mainly used for welding nickel-based alloys, dissimilar materials (e.g., steel-nickel, copper-nickel), and repairing nickel-clad components. They excel in high-corrosion (chemical, marine) and extreme temperature (-196℃ to 315℃) environments, ensuring welds with strong corrosion resistance and mechanical stability-suitable for pressure vessels, offshore pipelines, and low-temperature equipment.
Q: Can you MIG weld nickel?
A: Yes, nickel and nickel-based alloys can be MIG welded (Gas Metal Arc Welding, GMAW). It requires using nickel-based filler wires (matching the base metal's alloy grade, e.g., ERNi-1 for pure nickel) and shielding gas (typically high-purity argon or argon-helium mixtures to prevent oxidation). Proper parameter control (voltage, wire feed speed) and clean surfaces are key to ensuring weld quality, especially for corrosion-resistant or high-temperature applications.
Q: How can we prevent hot cracking when welding nickel?
A: To prevent hot cracking when welding nickel, use low-impurity filler metals (strictly control S, P) and match base metal purity. Control heat input to avoid overheating, and ensure tight shielding with high-purity argon to prevent contamination-these limit grain boundary segregation of harmful elements.
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