Element 42 · Transition Metal
Molybdenum
Molybdenum gives 316 stainless steel its superior corrosion resistance to chlorides and acids.
Element Facts
SYMBOL
Mo
ATOMIC NO.
42
ATOMIC WEIGHT
95.95
CATEGORY
Transition Metal
PERIOD
Period 5
GROUP
Group 6
Overview
Molybdenum is element 42, a silvery-white transition metal with one of the highest melting points of any element (2,623°C). It was discovered by Swedish chemist Carl Wilhelm Scheele in 1778. About 80% of molybdenum is used as an alloying element in steels and superalloys, where small additions (1–3%) dramatically improve high-temperature strength, hardenability, and corrosion resistance. The other major use is in catalysts, particularly for petroleum refining. China, Chile, and Peru dominate global production. Molybdenum is traded over-the-counter rather than on the LME, and its price has been volatile through 2021–2026 due to supply chain disruptions.
Our Scrap Grades for This Metal
We buy molybdenum through 316 stainless steel scrap, where its 2–3% content adds substantial value over standard 304.