FORD WSS-M6B13-A1 2015 Edition, September 11, 2015
INK, HEAT ACTIVATED, COLOR CHANGING, HEAT TREAT PROCESSING AID ***TO BE
USED WITH FORD WSS-M99P1111-A***
Description / Abstract:
The material defined by this specification is designed to change
color after exposure to a known thermal load to aid in thermal
treatment of metal components.