Molybdenum-A Key Component of Metal Alloys
Fact Sheet
2009-3106
USGS Mineral Resources Program
By: S. J. Kropschot
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Abstract
Molybdenum, whose chemical symbol is Mo, was first recognized as an element in 1778. Until that time, the mineral molybdenite-the most important source of molybdenum-was believed to be a lead mineral because of its metallic gray color, greasy feel, and softness. In the late 19th century, French metallurgists discovered that molybdenum, when alloyed (mixed) with steel in small quantities, creates a substance that is remarkably tougher than steel alone and is highly resistant to heat. The alloy was found to be ideal for making tools and armor plate. Today, the most common use of molybdenum is as an alloying agent in stainless steel, alloy steels, and superalloys to enhance hardness, strength, and resistance to corrosion.
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Molybdenum-A Key Component of Metal Alloys |
| Series title | Fact Sheet |
| Series number | 2009-3106 |
| DOI | 10.3133/fs20093106 |
| Edition | - |
| Year Published | 2010 |
| Language | ENGLISH |
| Publisher | U.S. Geological Survey |
| Contributing office(s) | Mineral Resources Program |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |
| Google Analytic Metrics | Metrics page |