Cobalt (Co) Wire – Hefei Kejing High-Purity Metal Filament

Overview

Cobalt (Co) wire is a high-purity metallic filament engineered for precision applications in materials science research, thin-film deposition, sputtering target fabrication, and high-temperature sensor element assembly. Produced under controlled cleanroom conditions, this cobalt wire meets stringent purity and dimensional consistency requirements essential for reproducible experimental outcomes and industrial process validation. Its inherent magnetic properties, high Curie temperature (~1121 °C), excellent corrosion resistance in alkaline environments, and stable thermal expansion coefficient make it particularly suitable for demanding physical vapor deposition (PVD), electron beam evaporation, and calibration standard applications.

Key Features

• Ultra-High Purity: Certified 99.99% (4N) cobalt content, with trace impurities (e.g., Fe, Ni, Cu, O, C) rigorously controlled per batch-certified analytical reports (ICP-MS and GDMS verified).
• Precision Dimensional Control: Diameter tolerance maintained within ±0.5 µm for wires ≤0.1 mm and ±1% for diameters up to 2.0 mm, ensuring consistent current density and resistive heating behavior in coil or filament configurations.
• Controlled Surface Integrity: Electrolytically polished surface finish (Ra < 0.05 µm) minimizes particle shedding and oxidation nucleation sites—critical for vacuum-compatible and UHV system integration.
• Traceable Cleanroom Packaging: Final packaging performed in ISO Class 6 (Class 1000) cleanrooms; individually sealed in double-layered, static-dissipative Class 100 (ISO 5) cleanroom bags with aluminum-foil inner lining to prevent moisture ingress and ambient particulate contamination.
• Material Traceability: Each spool or coil carries a unique lot identifier linked to full metallurgical certification, including residual gas analysis (RGA) data for H₂, O₂, N₂, and H₂O outgassing profiles relevant to ultra-high vacuum compatibility.

Sample Compatibility & Compliance

This cobalt wire is compatible with standard wire-drawing, coiling, laser cutting, and ultrasonic wedge bonding processes. It conforms to ASTM F288–22 (Standard Specification for Cobalt and Cobalt Alloy Wire for Surgical Implants) for mechanical integrity and surface quality benchmarks—even when used outside medical contexts—as a de facto industry reference for high-reliability metallic filaments. While not certified to ISO 13485, its production documentation supports GLP-compliant lab use where material provenance and environmental control are auditable requirements. For FDA-regulated device prototyping, the 4N purity and documented low volatile residue profile align with USP particulate matter testing prerequisites.

Software & Data Management

No embedded firmware or software is associated with this passive metallic component. However, full material compliance documentation—including batch-specific certificates of analysis (CoA), ICP-MS spectral summaries, and cleanroom processing logs—is provided digitally in PDF format upon order fulfillment. All data files adhere to 21 CFR Part 11-compliant metadata tagging (timestamp, operator ID, instrument calibration status) to support audit readiness in regulated R&D environments. Raw analytical datasets (e.g., GDMS spectra) are available upon formal request for internal QA review or third-party verification.

Applications

• Thermal evaporation sources in organic light-emitting diode (OLED) and perovskite solar cell R&D.
• Seed wire for directional solidification studies of Co-based superalloys and intermetallic compounds.
• Reference filaments in resistance thermometry calibration rigs operating up to 650 °C.
• Target bonding wire in magnetron sputtering systems requiring ferromagnetic seeding layers.
• Microelectrode fabrication for electrochemical impedance spectroscopy (EIS) of battery cathode interfaces.
• Calibration standards for X-ray fluorescence (XRF) and energy-dispersive X-ray spectroscopy (EDS) quantification workflows.

FAQ

Is this cobalt wire suitable for ultra-high vacuum (UHV) chamber applications?

Yes—low outgassing rates (<1×10⁻¹⁰ mbar·L/s·cm² at 25 °C, measured by RGA after 24-h bakeout at 150 °C) and documented hydrocarbon-free surface treatment ensure compatibility with UHV systems down to 10⁻¹¹ mbar base pressure.
Can custom diameters or annealing conditions be requested?

Hefei Kejing supports OEM diameter specifications within 0.005–3.0 mm range and optional in-line annealing (H₂/Ar atmosphere, 400–800 °C) with tensile strength and grain size reporting per ASTM E112.
What documentation accompanies each shipment?

Each order includes a signed Certificate of Conformance, batch-specific CoA with impurity listing (ppm-level detection limits), cleanroom processing log, and packaging integrity verification report.
Is the wire supplied in straight lengths or wound coils?

Standard delivery is on non-magnetic stainless steel spools (diameters 75–300 mm); straight cut lengths (±0.2 mm tolerance) are available upon specification with minimum order quantity adjustments.
How is long-term storage stability ensured?

The foil-lined cleanroom bag provides barrier protection against humidity (>90% RH resistance for ≥12 months at 25 °C), and inert gas purging (N₂) is performed prior to final seal—validated via residual oxygen monitoring (<10 ppm).