Abstract: A multi-metallic pressure-controlling component and a hot isostatic pressure (HIP) manufacturing process and system are disclosed. An example multi-metallic component for use in the oil field services industry includes a first metal alloy that forms a first portion of the multi-metallic pressure-controlling component, and a second metal alloy that forms a second portion of the multi-metallic pressure-controlling component. A diffusion bond is disposed at an interface between the first metal alloy and the second metal alloy that joins the first metal alloy to the second metal alloy within the multi-metallic pressure-controlling component.