Platinum Iridium alloy

  • Platinum iridium alloy sheet
  • Platinum iridium alloy tube

Product Details

Platinum Iridium alloy Introduction

Platinum-iridium alloy is platinum based iridium binary alloy, it is continuous solid solution at high temperature, and slow cooling to solid phase decomposition during 975 ~ 700 ℃, but the phase equilibrium process is quite slow. Iridium is volatile and oxidized, which can significantly improve the corrosion resistance of platinum. There are Ptlrl0, Ptlr17.5, Ptlr25, Ptlr30 and other alloys with high hardness, high melting point, high corrosion resistance and low contact resistance specialty. The chemical corrosion velocity is 58% of pure platinum and the oxidation loss is 2.8mg/g. It is a classical electric contact material used for the electric contact points of ignition contacts, high sensitivity relays and micromotors.Potentiometers and conducting rings and brushes for precision sensors such as aircraft, missiles and gyroscopes.

We can produce platinum-iridium alloy sheet and plate, platinum-iridium alloy rod and bar, platinum-iridium alloy tube, platinum-iridium alloy ingot, platinum-iridium alloy pellet.
Wire diameter >=0.02mm
Sheet thickness >=0.03mm, width<=100mm
We can customize all shapes of products according to customers' request, such as rod and bar, tube, ingot, pellet and parts.

Some Properties of Platinum-Iridium Alloy (20℃)
Alloy Condition Tensile
Strength/Mpa
Elongation/% Hardness HB Density/g·cm-3 Electrical Resistivity/nΩ·m Resistance Temperature Coefficient/K-1
Pt-5Ir Annealing State 275 32 90 21.49 - 0.00188
Hard State 485 2.0 140
Pt-10Ir Annealing State 380 27 130 21.53 1780 0.00126
Hard State 620 2.5 185
Pt-15Ir Annealing State 515 24 160 21.57 1790 0.00102
Hard State 825 2.5 230
Pt-20Ir Annealing State 690 21 200 21.61 1815 0.00081
Hard State 1000 2.5 265
Pt-25Ir Annealing State 860 - 240 21.66 1840 0.00066
Hard State 1170 - 310
Pt-30Ir Annealing State 1105 - 280 21.70 1890 0.00058
Hard State 1380 - 360
Pt-35Ir Annealing State - - - 21.79 - 0.00058
Hard State - - -
Pt-Ir Alloy Application
Ir Content Main Application
0.4-0.6% Precision instrument, electrical connection in instrument.
5-15% Jewelry and ornaments
10-13% Medical equipment and dental materials.
10-25% The ignition contact point of an aeroengine. High sensitive relay,Potentiometer and conductive ring in Aircraft, missile, ship heading, horizon, gyroscope.
10% Electrode material in electrochemical industry.
25-30% High-end pen tip, syringe needle point, precision instrument of the spring.

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