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Why
we use Lambda?
Ferritic-Nitrocarburizing Curves
&
MetaLLife
+
ThermaLLifeÒ
combined
Compressive Stress Values as a function of Depth
Measured January 1999
To be updated 3rd quarter 2001
- values above 0 on the "y" axis show tensile stress - destructive and initiates cracking
- values below 0 on the "y" axis show compressive stress - beneficial and stops cracking
-
Good surface compression -96.5 ksi
Large knee to depth of approx .006"
No visible topography of the surface
No distortion, size, or tolerance changes
Surface compression -192 ksi
No knee to depth of approx .016"
With visible topography (T-41H) to the surface
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