What is the easiest thin steel sheet to bend without cracking?

[elowen01Participant @elowen01]

I need to make a few small bent parts from thin steel sheet and I am not sure what material would be the easiest to work with.

The parts are fairly simple, but I would like to avoid cracking at the bends and keep the shape reasonably consistent. I can cut the blanks myself and use a small press brake or a simple forming tool.

Would mild steel be the obvious choice, or would something like tinplate be suitable for this kind of job?

I am also unsure how much the sheet thickness and temper affect the result. I have noticed that some thin sheets bend quite easily, while others spring back more than expected or crack near the edge.

For a small workshop project, what would you normally look for when choosing the material?

Would you recommend making a few test bends first, or is there a simple way to estimate the bend radius and springback before making the tool?

[JasonBModerator @jasonb]

Need more details, a bit of tin plate will not support much so what is the use, length of bend, etc

If mild steel CR4 is what gets used for fabrication work where bending is needed. S275 is not too bad either,

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