Chromium

Cr · Z 24

atomic number: 24
atomic mass: 51.996
notation: Cr
group: 6: Chromium
period: 4
state0c: Solid
state20c: Solid
occurrence: Primordial
density: 7.15
melting pt: 1907
boiling pt: 2671
discovered: 1794
abundance: 102
bio class: Ultratrace
bio role: Long listed as essential for glucose tolerance; the evidence weakened and it is now usually classed as beneficial at most.
ore grade: 270000
ore minerals: chromite
mined as: Primary

extraction

Chromite from layered intrusions — the Bushveld above all — is crushed and gravity-concentrated, then smelted with coke in a submerged-arc furnace to ferrochrome, of which almost all goes into stainless steel. Chromite is also refractory and the source of chromium chemicals.

mines

Impala Rustenburg Kemi

machines

Gas Turbine (Jet Engine)Pelton Wheel Steam Turbine Kaplan Turbine Francis Turbine

skills

TIG Welding Heat Treating Steel Reading Calipers and a Micrometer

equations

Joule Heating Einstein A and B Coefficients Laser Rate Equations

Referenced by

equation

Einstein A and B Coefficients Joule Heating Laser Rate Equations

machine

Francis Turbine Gas Turbine (Jet Engine)Kaplan Turbine Pelton Wheel Steam Turbine

mine

Impala Rustenburg Kemi

skill

Heat Treating Steel Reading Calipers and a Micrometer TIG Welding

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From the All Periodical Elements database in Notion, last edited 2026-08-25. This page is the row, rendered by the build; nothing on it is written by hand.