Selective laser melting (SLM) is an exciting and novel metal-based additive manufacturing process which offers numerous advantages over conventional material processing routes. The use of SLM is currently hampered by the lack of understanding and prediction capability of it's failure modes. SLM process simulations have been developed and sample orientation has been predicted to have an effect of the residual stress (RS). RS measurements are proposed in uniaxial samples built in 2 orientations that will be used in stress corrosion cracking (SCC) experiments. Samples will be measured in their as-built condition and after heat treatment considered to mitigate RS. These measurements will help determine the role of RS in SCC of SLM components. In addition the measurements will provide validation for the SLM process and heat treatment simulation models developed at Imperial College London.