A steel-gray hard ductile metallic element with a high melting point that occurs widely in combined forms. It is highly resistant to corrosion, and is used especially in alloys and in refractories and ceramics.
A steel-gray hard ductile metallic element with a high melting point that occurs widely in combined forms. It is highly resistant to corrosion, and is used especially in alloys and in refractories and ceramics.