High-Melting High-Density Flexible Platinum-Iridium Wire

Introduction
Platinum-iridium alloy is a binary alloy based on platinum and iridium. It exhibits high melting points, density, hardness, strength, and elasticity, with these properties increasing as the iridium concentration rises. The addition of iridium to platinum significantly enhances its resistance to chemical corrosion, with alloys containing over 30% iridium being practically immune to attack by boiling aqua regia. The electrical resistivity of platinum-iridium alloys increases with concentration, while the temperature coefficient of resistance decreases.

Application
Platinum-iridium wires find extensive applications as temperature sensors, industrial platinum resistance thermometers, and conductive baselines in precision instruments. They are utilized across various sectors such as chemical engineering, pharmaceuticals, cement production, research laboratories in academic institutions, and as carriers for high-temperature experiments, operating effectively at temperatures exceeding 1400 degrees Celsius. Renowned for their high-temperature resistance and long lifespan, they serve as reliable components for demanding applications.