The Collaborative International Dictionary
Soft steel
Soft steel \Soft steel\ Steel low in carbon; mild steel; ingot iron.
Usage examples of "soft steel".
The pilums couldn't penetrate the armor but they could penetrate the shields and when they did the soft steel heads bent down, adding their weight and leverage to the already unwieldy shields.
The oil-burning incendiaries were basically four one-foot square Tupperware boxes with a soft steel liner, into the bottom of which I'd drilled a number of holes.
He stood over the still soft steel of the sword, newly made by the long, smooth arms of the blacksmith.
With the pliers and hammer I straightened it out until the angle was more like forty-five degrees than ninety, being careful not to snap the soft steel.