VICKERS MK6B's resto

[Andrew Rowe]

Hi Colin, Lynn is referring to Corten. As you probably know there are several grades of steel. Mild steel comes in what we call grade 250 , I think that is (mpa ) scientific jargon. This can come in "hot" rolled and " cold " rolled sheet. Cold being a bit more supple to work with, when bending and forming. Corten is grade 350 , which is suppose to have more corrosion resistance properties in the steel and harder wearing. We use this for building truck decks, etc. Slightly harder to drill , but easy when using rotobroach cutters. Then obviously you can then go even harder , even up to 1200mpa " Hardox" is a brand of steel, but very , very hard to drill and when bending in a brake press, have to bend 30% over as it springs back , this type of steel would probably be equivalent to armour plate. Just my observations, Cheers Andrew.