Kerbal Space Program

Overview
I am developing some custom parts, including one with very high crash tolerance. However, the part is destroyed in a collision at high speed even though the crash tolerance in the CFG file is greater than the velocity at time of collision.

Reproduction
The collision speed in this instance was roughly 1100 m/s, while the part configuration states a crash tolerance of 10000 m/s.
To test the part, I launched it on a sub-orbital trajectory. The part did not have parachutes or other attachments to reduce its speed, as the intention of the experiment was to test the crash tolerance.

Notes
Is there an upper limit to the crash tolerance value? Is crash tolerance simply ignored for collisions above a certain velocity?
Even with No Crash Damage in the debug menu active, it seems that high-speed crashes still destroy spacecraft.