Chromium is a chemical element which has the symbol Cr and atomic number 24, first element in Group 6. It is a steely-gray, lustrous, hard metal that takes a high polish and has a high melting point.

For a typical sample of Cr the refractive index and extinction coefficient at 632.8 nm are 3.13628 and 3.31186. Below are files of complete refractive index and extinction coefficients. If the file is not available for download, you can request our proprietary file by clicking "Request".

Refractive Index Reference - Sopra Material Database

No guarantee of accuracy - use at your own risk.