The superplastic behavior of a pseudo single phase magnesium alloy, ZK61, produced by the powder metallurgy (P/M) route was examined at half the absolute melting point. The alloy behaved in a superplastic manner at a high strain rate of 1 × 10-2s-1 Albeit at a low temperature of 473 K. Large elongation of 283% was recorded. The optimum superplastic strain rate in the alloy was faster than that in some conventional magnesium-based materials, that were shown to exhibit low temperature superplasticity.