Iridium
MATERIAL OVERVIEW
Characteristics: Silver-white. Low ductility. Does not tarnish in air. On heating strongly, a slightly volatile oxide is formed. Insoluble in acid, slowly soluble in aqua regia and in fused alkalies. Most corrosion-resistant element, modulus of elasticity is one of the highest. Highly resistant to chemical attack. Toxicity is probably low. Due to the brittle nature of iridium the fabrication of rod requires melting iridium sponge into a cylindrical shaped ingot and grinding to the finish diameter.
To view a photo of the item hover over the 
icon.
GENERAL PROPERTIES
|
Symbol: |
Ir |
|
Atomic Number: |
77 |
|
Atomic Weight: |
192.22 |
|
Density: |
22.42 gm/cc |
|
Melting Point: |
2410 oC |
|
Boiling Point: |
4130 oC |
|
Thermal Conductivity: |
1.47 W/cm/K @ 298.2 K |
|
Electrical Resistivity: |
5.3 microhm-cm @ 20 oC |
|
Electronegativity: |
2.2 Paulings |
|
Specific Heat: |
0.0317 Cal/g/K @ 25 oC |
|
Heat of Vaporization: |
152 K-cal/gm atom at 4130 oC |
|
Heat of Fusion: |
6.6 Cal/gm mole
|
TYPICAL ANALYSES - Impurities in ppm
|
Material / Purity: |
3N5 |
4N |
| Ag | <5 | 4 |
| As | <5 | - |
| B | <5 | - |
| Bi | <10 | 7 |
| Ca | <10 | 5 |
| Co | 2 | 1 |
| Cr | 10 | 8 |
| Cu | 2 | 1 |
| Fe | 35 | 20 |
| Mg | <5 | 1 |
| Mn | <5 | 1 |
| Na | <5 | 2 |
| Ni | <10 | 2 |
| Pb | 12 | 1 |
| Pd | <10 | 5 |
| Pt | 65 | 20 |
| Sb | 10 | 5 |
| Si | 10 | 10 |
| Sn | <5 | <1 |
| Te | <2 | - |
| Zn | <10 | 2 |
IRIDIUM ROD
|
Material |
Purity |
| Iridium rod .250" | 3N5, 4N |
Rod is made to order and sold by the inch. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional diameters or custom sizes.
IRIDIUM POWDER, SHOT, PELLETS, & INGOT
|
Material |
Purity |
| Iridium Shot 3-6mm | 3N5, 4N |
| Iridium Shot 6-10mm | 3N5, 4N |
| Iridium Pellets .50"D X .50"L | 3N5, 4N |
| Iridium Ingot | 3N5, 4N |
| Iridium Powder-100 Mesh | 3N5, 4N |
| Iridium Powder-325 Mesh | 3N5, 4N |
Powder, shot, pellets, and ingots are packaged to order and sold by the gram. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional specifications or custom requirements.
|
|
ALLOYS 
