Measurements can be made nondestructively on the surface of critical components. Carbides present are routinely identified, and specific data collection schemes are developed for each alloy to avoid and correct for carbide interference. Carbide content may be obtained by chemical extraction and gravimetric analysis. Correction for carbide content is available. Either constant angle or constant area techniques allow measurement of arbitrary sizes and shapes.
Fixtures are available for massive samples.
Miller fixture is available to spin and rock the sample to mitigate texture and grain size effects. Subsurface austenite distributions may be obtained through the hardened case using electropolishing.