Chromium
Chromium is hard, brittle semi-grey metal. As a compound, it has varied and robust colors. Chromium ion forms many coordination compounds. In active and passive forms, the latter gives rise to its corrosion resistance due to a thin surface oxide layer that passivates the metal when treated with oxidizing agents. Active form reacts readily with dilute acids to form chromous salts. It is soluble in acids (except nitric) and strong alkalies, and insoluble in water.
ARS provides pure chromium products and chromium-nickel alloys, chromium cobalt alloys with high quality and competitive prices.
Below are some of our standard chromium and its alloy products. If you require customized products, please contact us by email.
Physical Properties of Chromium
| Chromium Physical Properties | ||
|---|---|---|
| Density | gm/cc | 7.18 |
| Melting Point | °C | 1857 |
| Boiling Point | °C | 2672 |
| Thermal Conductivity | W/cm/K @ 298.2 K | 0.939 |
| Specific Heat | Cal/gm/°C | 0.107 |
| Coefficient of Linear Thermal Expansion | micro-in/°F x 10-6 | 4.9 |
| Heat of Vaporization | K-Cal/gm atom at 3380 oC | 72.97 |
| Electronegativity | Paulings | 1.6 |
| Electrical Resistivity | micro-ohm-cm | 12.9 |
Mechanical Properties of Chromium
| Chromium Mechanical Properties | Metric | imperial |
|---|---|---|
| Poisson’s Ratio | 0.31 | 0.31 |
| Modulus of Elasticity | 248 GPa | 35969 ksi |
| Hardness, Vickers | 90 | 90 |
| Hardness, Brinell (converted from Vickers for 500 kg load/10 mm ball) | 80 | 80 |
| Hardness, Knoop (converted from Vickers) | 102 | 102 |
| Hardness, Rockwell B (converted from Vickers) | 48 | 48 |
Product List of Chromium
Chromium Metal: Chromium wire, Chromium tubes, Chromium rods, Chromium sheets, Chromium discs, customized machined chromium parts
Chromium alloys: Chromium-Nickel alloys, Chromium Cobalt alloys.
Chromium chemicals: Chromium Carbide powder, Chromium Diboride (CrB2) Powder, and Chromium metal powder
Applications of Chromium
1. In metal ceramics
2. In chrome plating
3. As dyes and paints
4. To produce synthetic rubies
5. In alloys, e.g., stainless steel
6. To manufacture molds for the firing of bricks
7. As a catalyst in dyeing and tanning of leather
8. In metallurgy to provide corrosion resistance and a shiny finish
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