Chassis material spec?

[Lucas112]

Does anyone know what material is used in the GTR chassis? I read on ultimas webpage that 38mm x 1,5mm tube is used. But I would like to know what steel it is.

Regards,

[gtrclive]

The norm would be CDS on any Structural beams or beams under bending loads... ERW on the rest.... Cage Definitely CDS 3mm thick though..

[Lucas112]

gtrclive said:

The norm would be CDS on any Structural beams or beams under bending loads... ERW on the rest.... Cage Definitely CDS 3mm thick though..

I guess that CDS meens Cold Drawn Steel and ERW means Electric Resistance Welded? But what material is the steel? It should be ST-37 or something like that