I need to create a product in composite which has a similar strength to 6mm stainless steel. It's the two steel "plates" in the image attached

Any ideas on the type of layup best to achieve that? It'll be infusion. I appreciate about laying the weave in opposing directions per layer etc, it's more the weight of layup to use as in number of layers of 600 weight cloth. I'll need to put some aramid in it as well I think.

Ok, here is my version of lay up : 

Cheers, that's useful. why twaron AND kevlar? both are aramid, very similar/same?

The only other thing attached is a composite fairing, about 350 grams.

using 2mm soric means many layers of tape at the edges to match the thickness of the soric, to ensure it doesnt show through at the edges when trimmed and finished?

Twaron is black and it works rather as a background for first layer, you could use diolen, carbon, anything that is black, you can make soric smaller, and after everything is cured just stick one single sheet of cf to the back of part, so noone will see the diffrence in thickness, do you know what I mean?

~~~Everytime I hear sound of demoulding part I have eargasm~~~

I would ensure the laminate is balanced either side of the core to prevent any warping or distortion.

You can seal the edge neatly with Black Epoxy Repair Filler or you can use some ProFinish Carbon Fibre Plain Weave 1k 90g folded around the edge of the soric. Just cut it into small strips, and wrap around the edge of the soric if you have a precise mould.

Warren Penalver
Easy Composites / Carbon Mods - Technical Support Assistant