NAICS CODE 331512 - Steel Investment Foundries

Industry Sector


Total Companies


Est. Employment



This U.S. industry comprises establishments primarily engaged in manufacturing steel investment castings. Investment molds are formed by covering a wax shape with a refractory slurry. After the refractory slurry hardens, the wax is melted, leaving a seamless mold. Investment molds provide highly detailed, consistent castings. Establishments in this industry purchase steel made in other establishments.


NAICS Code 331512 - Steel Investment Foundries is a final level code of the “Manufacturing” Sector. There are 197 companies classified in this industry in the USA with an estimated employment of 13,735 people.

Industry Examples

Common types of examples within NAICS Code 331512 - Steel Investment Foundries are:

  • Foundries, steel investment
  • Investment castings, steel, unfinished, manufacturing
  • Steel investment castings, unfinished, manufacturing
  • Steel investment foundries


For some business types, there may be a similar industry to NAICS Code 331512 - Steel Investment Foundries that is a better classification match. Establishments primarily engaged in:
  • Manufacturing steel castings (except steel investment castings): classified in U.S. NAICS Code - 331513 - Steel Foundries (except Investment).
  • Manufacturing steel investment castings and further manufacturing them into finished products: classified based on the specific finished product.

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