Making Stronger Steel As Light As Aluminum

[MrWindsurf]

http://www.autoblog.com/2011/01/31/steel-nanotechnology-can-reduce-the-weight-of-our-cars/

I thought this was pretty interesting

[warps]

Interesting

I wonder what they mean by "stronger" though - higher yield strength (eg tool steel or spring steel) or higher youngs modulus (ie deflects less for a given stress). Then there's things like fatigue resistance (generally as the yield strength goes up, the fatigue resistance goes down etc.).

Definitely interested to hear more about this.

[wht510]

They've got this amazing steel. Fairly cheap. it's called 4130... Chrome-Moly! Stronger than mild steel, and as light as aluminium.

On a serious note: Interesting though. Wonder when it's going to be cheap enough for mainstream use?