6 ft. x 2 in. x 1/8 in. Steel Flat Plate

sand (or sand blast) the mil scale off, then prime w/ a steel primer or Rustolem , the Mil Scale will allow rust to form and it has no anchor profile (It's smooth)

no....i cut mine with dremel tool ....cutting discs.

Yes it can i've used it 3 times already for 3 door installs... I make my own hardware and this is perfect for the track.....

This is mild steel and an alternative name for mild steel is weldable steel. This is an old term when the only way to weld was with a torch. An oxyacetylene torch can only weld mild steel (and aluminum), though with arc welding you can weld other types of steel. Mild steel (weldable steel) welds better than any other steel no matter what welder you use.

It attracts a magnet but it is not magnetic itself.

No, this product is not designed for knife-making.

This is hot rolled steel. Not as strong as cold rolled steel. Not sure what you mean by heat treatable?

Thank you for the question. Depending on how powerful your roller is, you should be able to bend this item. Good luck with your project.

Since it is only one eighth inch thick it will bend easily. If you want to apply a load you will have to design a brace system or you can weld it at each end. If the frame is stiff it will provide support to the flat stock and minimize bending.

Yes. It will rust even if left inside. Very rust prone. You have to paint it to prevent rust.