Overview
Platinum sheet is a premium industrial and decorative material prized for its exceptional resistance to corrosion and oxidation. As a noble metal, it retains its properties under extreme conditions, making it indispensable in high-performance applications. Primarily sourced from South Africa and Russia, platinum is refined to ≥99.95% purity for sheet production. Its unique combination of malleability and strength allows rolling into thin foils (as thin as 0.025mm) or thicker plates for structural uses.
Physical and Chemical Properties
Platinum sheets exhibit remarkable stability, with a melting point exceeding 1700°C and negligible reactivity with most chemicals. Their density (21.45 g/cm³) is among the highest of all metals, contributing to durability in harsh environments. The metal's face-centered cubic crystal structure ensures excellent ductility, enabling cold-rolling without annealing. Electrically, platinum sheets have a resistivity of 10.6 μΩ·cm, making them suitable for precision instruments where gold's softness is undesirable.
Main Applications
In industrial settings, platinum sheets serve as catalysts in nitric acid production and fuel cell electrodes. Their non-reactivity makes them ideal for laboratory crucibles and spinnerets in glass fiber production. The jewelry industry utilizes platinum's hypoallergenic properties for luxury watch components and wedding bands. In healthcare, thin platinum sheets are used in pacemaker electrodes and抗癌 drug delivery devices due to biocompatibility.
Safety and Storage
While platinum is non-toxic, fine particulate from machining requires ventilation to prevent respiratory irritation. Store sheets separated by acid-free paper in climate-controlled areas to minimize surface scratching. For long-term storage, argon-filled containers prevent sulfur tarnishing. Industrial users should implement metal recovery systems, as platinum scrap retains >95% of its value due to recyclability.
B2B Procurement Guide
Specify ASTM B561 or ISO 9202 standards when ordering. Key parameters include thickness tolerance (±5% standard), surface finish (e.g., mirror, matte), and edge condition (sheared or machined). For catalytic applications, request BET surface area data. Bulk buyers (10kg+) can negotiate 8–12% discounts from spot prices. Reputable suppliers provide assay certificates with laser-engraved lot tracking on each sheet.
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