Stability and Compatibility Tests with Hydrogen Peroxide. Report No. 3

Metallic couples, selected from aluminium, two light alloys, three stainless steels and tin, were immersed in T.L. H.T.P. sodium stannate stabilised at room temperature for periods of up to eight months. In all cases attack above the surface was initially more marked than below the surface, in which respect aluminium was the least satisfactory. Electrochemical attack occurred below the surface and was very marked in the case of tin and aluminium. The behaviour of the three stainless steels examined under those and also under tropical conditions, suggests that they should not be used as constructional materials for H.T.P. containers.