Is this wrought iron?

[Unitedstatesofamerica1]

 

Amazon Forum Fav 👍

A Handbook of Civil War Bullets and Cartridges - Grab it through Amazon!

[mick56]

I would lean towards cast iron.

 

[Tony in SC]

Cast.

 

[50bmg]

stamped steel
its a key for a plumbers torch tank [ mc or b tank]

 

[4x4x4]

....I agree...... Mild steel tank valve wrench.

 

[hvacker]

It does look like a tank wrench.
It takes more than a picture to ID iron/steel types. There are hundreds of alloys and while the exact composition won't be exact, the different common ones usually can be ID'd. Ferrous metals can be ID'd with a spark test using a bench or portable grinder. The sparks will be different for various iron/steel types.
There are examples of the sparks on line. It takes a careful eye at first.
This is helpful in dating ferrous items as steel is historically fairly recent.

 

[Tony in SC]

It does appear to be a tank wrench, it is also a sand cast piece. I've never seen one like that before?