We order material from various suppliers and we track the MTRs by the supplier's heat code. Occasionally, we'll get two different materials from two different suppliers, but each supplier has labeled their material with the same heat code (ie. material from supplier A with heat code XYZ and material from supplier B with heat code XYZ, but these are different materials). The heat codes are unique to each supplier but we run into traceability problems on our end where one heat code could refer to two different heats of material. The obvious solutions that I see are us assigning our own heat codes to the parts (which would require us to mark the new heat code on the parts and documentation, which we'd rather not do) or us forcing our suppliers to use heat codes that will avoid possible duplication (which will likely require a longer, more complicated heat code based on a system that we impose and which some suppliers may be unwilling to do). Can anyone suggest a better way to ensure that we have unique heat codes or to deal with duplicate heat codes?
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