Answer:
No. Tungsten is an element, where as tungsten carbide is an alloy, or a mixture of elements (tungsten, nickel, tantalum, niobium, titanium, and chromium). Tungsten carbide is much easier to work into styles and designs, but does not change the hardness of the metal. Here is a website with some more helpful resources:
http://www.tungstenworld.com/Tungsten-vs-Tungsten-Carbide/
http://www.tungstenworld.com/resources/