Ni 207 (UNS N02200) Supplier | Bar, Tube, Plate - Hangbo Alloy
Date: 2024年9月18日 Categories: All Products、Nickel Views: 1152
Excerpt:
Nickel 207 — commercially pure nickel alloy for high-conductivity electrical and magnetic applications. Used in electronic components and precision resistance elements.
Shanghai Hangbo Alloy Group Co., Ltd. supplies Ni 207 (ENi-1 / ERNi-1, UNS N02207) welding consumables — covered electrodes, bare rods and wire — purpose-matched for welding Nickel 200 (UNS N02200) and Nickel 201 (UNS N02201). The weld deposits inherit the caustic resistance, high-temperature stability and ductility of the base metal, delivering sound, porosity-free joints for chlor-alkali, caustic, food and chemical process equipment.
Standards
- AWS A5.11 — ENi-1 Covered Welding Electrode
- AWS A5.14 — ERNi-1 Bare Rod & Wire
- ASME SFA-5.11 / SFA-5.14 — Boiler & Pressure Vessel Code
- UNS N02207 / DIN 2.4156 (ENi-1)
Precise AWS Chemical Composition (%)
| Element | ENi-1 Electrode | ERNi-1 Wire |
|---|---|---|
| Nickel (Ni) | 92.0 min | 93.0 min |
| Titanium (Ti) | 1.0 – 4.0 | 2.0 – 3.5 |
| Aluminum (Al) | 1.0 max | 1.5 max |
| Carbon (C) | 0.15 max | 0.15 max |
| Manganese (Mn) | 0.75 max | 1.0 max |
| Iron (Fe) | 0.75 max | 1.0 max |
| Silicon (Si) | 1.25 max | 0.75 max |
| Copper (Cu) | 0.25 max | 0.25 max |
| Phosphorus / Sulfur (P/S) | 0.03 / 0.015 max | 0.03 / 0.015 max |
Physical & Mechanical Properties (All-Weld-Metal)
| Property | Typical Value |
|---|---|
| Tensile Strength (As-Welded) | ≈ 410 MPa (60 ksi) |
| Elongation (in 2") | ≈ 30% |
| Density (Deposit) | 8.89 g/cm³ |
| Melting Range | 1435 – 1446 °C |
| Deposit Classification | Matches Ni 200 / Ni 201 chemistry |
Depth Characteristics
- Composition Continuity: High-purity nickel deposits (Ti/Al deoxidized) preserve the corrosion resistance of the Ni 200/201 base metal.
- Caustic Service Integrity: Welded joints retain resistance to hot caustic alkalis and reducing media — no sensitization, no carbide precipitation.
- Sound, Porosity-Free Welds: Titanium and aluminum act as deoxidizers, preventing weld porosity across a wide current range.
- High-Temperature Stability: Suitable for equipment operating up to ≈ 600°C, matching Ni 201 service capability.
- All-Position Versatility: SMAW electrodes and GTAW/GMAW wires cover shop and field fabrication in all positions.
Manufacturing Process — Melting & Processing
Ni 207 consumables are produced from VIM-melted high-purity nickel with tight control of Ti, Al, C and S. Wire is drawn and cleaned to precision diameters; electrodes are extruded with a low-hydrogen basic flux coating and baked for moisture control. Welding guidance: no preheat required for Ni 200/201 base metal; keep interpass temperature ≤ 100°C, use low heat input with stringer beads, and protect the weld with 100% argon (GTAW/GMAW) or the electrode coating (SMAW).
Testing & Inspection Methods — 100% PMI / UT
- PMI (Positive Material Identification): 100% XRF verification of every spool, rod and electrode batch before dispatch.
- Mechanical Testing: All-weld-metal tensile and elongation per AWS A5.14/A5.11 with certified test reports.
- Chemical Analysis: Full composition per AWS requirements on each heat, supplied with the batch certificate.
- Plus: radiography of procedure-qualified deposits and hardness checks on request.
High-Frequency Application Scenarios
- Chlor-Alkali & Caustic Plants: Welding and repair of Ni 200/201 evaporators, crystallizers and caustic piping.
- Chemical Processing: Fabrication of reactors, heat exchangers and storage for HF, chlorine and alkalis.
- Food & Dairy: Hygienic process vessels and lines in pure-nickel construction.
- Overlay & Cladding: Nickel surfacing on carbon steel for corrosion-resistant cost-effective service.
- Maintenance & Repair: On-site restoration of nickel equipment in chemical, fiber and electronic industries.
6+ Professional FAQs
1. What is Ni 207 used for?
It is the matching welding consumable (ENi-1 electrode / ERNi-1 wire, UNS N02207) for joining Nickel 200 and Nickel 201 and for nickel cladding on steel.
2. Can Ni 207 weld dissimilar metals?
Yes — it joins nickel alloys to carbon and low-alloy steels, although a buttering layer is recommended for thick sections.
3. Is preheat required?
No preheat is required for Ni 200/201 base metals; keep the interpass temperature low (≤ 100°C) to control grain growth.
4. Which shielding gas is used?
100% argon for GTAW/GMAW; argon-helium mixtures may be used to improve penetration on thick sections.
5. Why is titanium added to Ni 207?
Titanium (plus aluminum) deoxidizes the weld pool and prevents porosity, giving sound deposits with clean radiography.
6. Which product forms are available?
SMAW electrodes (Φ2.5/3.2/4.0mm), TIG/MIG wire (Φ0.8/1.0/1.2/1.6/2.4mm) and bare rods — with heat certificates and full traceability.
Supply List
- Covered Electrodes (ENi-1): Φ2.5mm / 3.2mm / 4.0mm × 350mm
- TIG Wire (ERNi-1): Φ0.8mm – 2.4mm, 1000mm rods or coils
- MIG Wire (ERNi-1): Φ0.8mm / 1.0mm / 1.2mm on spools
- Bare Rods: Custom diameters per drawing
- Packing: Vacuum-sealed moisture-proof cartons / 5kg – 25kg drums
Need certified Ni 207 consumables for your nickel fabrication? Contact Shanghai Hangbo Alloy Group for instant quotations, stock availability and batch certificates — quick response within 10 minutes. Email: sales@hangboalloy.com / Tel: +86 13611656360.
