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Paulo is proud to announce the recent addition of the St. Louis Division to the approved heat treat sources list for General Motors High Pressure Die Casting Die Insert Material.  The St. Louis Division joins Paulo’s Nashville plant on the approval list, which includes only seven approved locations in the US. The document, referred to as AWQ49657, covers approved material providers, heat treaters, and testing labs. Paulo is the only US source with two facilities on the list.
Vacuum Heat Treat Tooling
The approval list references AWQ49658 which includes the heat treatment specifications for Hot Work Tool Steels for GM High Pressure Die Casting applications. The materials covered in the specification include H-13, 2367, and others. The approval process requires running test cycles and sharing minute by minute furnace information with GM Engineers who validate that the cycle conforms to the specification. Precise furnace controls and well maintained equipment are essential to meeting the specification.
St. Louis plant manager, Tim Mohr commented, “We are proud of this accomplishment. Paulo St. Louis strives to build a culture of continuous improvement. Being included in this specification is the result of years of effort and knowledge building. We have a rich history working directly with OEM’s and their suppliers in many different industries. We constantly look for ways to improve our heat treatment processes and methods to help our customers succeed.”
Tool shops working with GM should ensure their heat treater has maintained their approval, as several revisions have occurred in the past 12 months.
Founded in 1943, Paulo is one of the largest providers of heat treating, brazing, and metal finishing solutions in North America. Headquartered in St. Louis, Paulo operates six divisions servicing the Midwest, Great Lakes, and Southeast regions of the United States and northern Mexico.

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