Sawzall blades?

Blades for cast iron...

I bought a Freud Diablo "Extreme Metal Cutting Blade" rated for cast iron and "The heaviest, strongest metals". I've accidentally put several 1 - 2 inch cuts into my bench vise with it. This thing eats through cast iron and heavy steel like I'm cutting aluminum.

And it ****ed well better, the single blade cost me nearly twenty dollars. I don't have to pull it out too often though, and that one blade is still going strong for me now 5 months down the line.