99.99% pure gold wire
|90/10 Plat Iridium||80/20 Plat Iridium|
|Density||21.53 g/cc||21.61 g/cc|
|Ultimate Tensile Strength||55,100 PSI||100,000 PSI|
|Electrical Resistivity||.000025 ohm-cm||.000031 ohm-cm|
The alloy 90/10 plat iridium, containing 10 per cent iridium, has very good all round manufacturing characteristics: it can be cast, welded, machined and stamped; it is ductile and malleable; can be hardened through working; and does not readily oxidize. Because of these advantages 90/10 Plat Iridium has traditionally been one of the most important jewelry alloys used in the USA, although there has recently been a swing toward alloys of 95/5 Plat Iridium. Some manufacturers in Germany and Japan also prefer the 95/5 alloy. The 80/20 Plat Iridium alloy is very hard and dense, and is sometimes used in the production of fine wirework.
Some uses for platinum iridium alloys include pacemakers, used to treat heart disorders that result in slow or irregular heartbeat, usually contain at least two platinum-iridium electrodes, through which pulses of electricity are transmitted to stabilize the heartbeat.
Other uses of platinum iridium alloys include electrical contacts, spark plugs, electro explosive devices, medical leads and electrodes, thermistors, catalytic applications, jewelry, pen points, surgical pins or pivots and the kilogram and meter standards used by the department of weights and measures.