Two sets of duplex and superduplex stainless steel pipes were produced by centrifugal casting and cold rolling. Tests were carried out in order to characterise microstructure, mechanical and corrosion behaviour of the pipes. The predominance of a equiaxed grain structure and a general microstructural and compositional homogeneity were observed. Each cold rolling and solution annealing cycle resulted in a gradual increase in mechanical strength brought about by microstructural modifications and refinement. After the second rolling pass the structure of superduplex grade was comparable to that of the more common wrought products. Tensile properties and impact toughness were strongly dependent on material composition and cold working degree.

The satisfactory results demonstrated that centrifugal casting is a useful tool for manufacturing small quantities of duplex and superduplex stainless steel parts with axisymmetrical geometry. The materials possessed properties comparable to those of the corresponding wrought products, even in as-cast condition.