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Decarburization Measurements: When steels are processes
by forming, forging, heat treating, or by any other
thermal treatment that can cause the material to go
above 760 C (1400 F ) for some time with no atmospheric
protection the steel can start loosing carbon from the
heated
surfaces. This is called decarburizing. This layer of
decarburizing can be partial or full and can degrade the
material relative to surface engineering properties.
With special techniques and precise specimen preparation
and our ability to measure surface and subsurface carbon
content, microhardness,
and microstructure image measurements we can determine
if the steel has full or partial decarburization or both
and the depth of these layers.
 -SAE J419
Methods of Measuring Decarburization-
-SAE J121
Decarburization in Hardened and Tempered Metric Threaded Fasteners-
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