Sense Sonnet - Pumper

 Tungsten

I'm a chemical element,

A metal natural on Earth.

I have proven quite evident

My many uses are of worth.

My melting and boiling points be

Highest of all elements, so

Remarkable robustness, me.

For added toughness, I'm a go.

I am immune to attack by

Most acids and bases, and too,

Don't react with water, and I

Am dense as gold, oft sub I do.

By the name tungsten I am known,

In Swedish meaning "heavy stone."