The production techniques used in the manufacture of grain-stabilized platinum and platinum alloys are discussed. Room-temperature tensile and stress-rupture results covering the temperature range 1250–1460°C for lives of 10–1000 h, indicating the improved strengths that are obtained with thoria-stabilized platinum-l0% rhodium alloy and “Fibro” thermo-element platinum, are quoted, and comparison is made with the results obtained for the equivalent melted materials. The structural properties of the grain-stabilized materials have been studied
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