Analysis
NAICS 332811 is the 2022 national industry for metal heat treating, part of 33281 (Coating, Engraving, Heat Treating, and Allied Activities). Census lists 9 example activities under it in the official index.
By establishments it ranks 3rd of the 3 codes at this level within Coating, Engraving, Heat Treating, and Allied Activities, with 13% of them.
Between 2018 and 2023 the number of establishments fell 11% and employment fell 14%. The 2018 count used NAICS 2017, so part of a large move can come from codes being redefined rather than from businesses opening or closing.
County Business Patterns counts 697 US establishments in this code in 2023, employing 18,995 people at an average annual payroll of $67,557 per employee (48th percentile of national industries). 17% of the establishments have fewer than five employees, which points to larger operations.
Its index entries, the activities Census uses to assign businesses to this code, include annealing metals and metal products for the trade, brazing (i.e., hardening) metals and metal products for the…, burning metals and metal products for the trade and cold treating metals for the trade, among 9 in all.
Official definition
This U.S. industry comprises establishments primarily engaged in heat treating, such as annealing, tempering, and brazing, and cryogenically treating metals and metal products for the trade.
Source: US Census Bureau, NAICS 2022 Manual.
Index entries (9)
- Annealing metals and metal products for the trade
- Brazing (i.e., hardening) metals and metal products for the trade
- Burning metals and metal products for the trade
- Cold treating metals for the trade
- Cryogenic treating metals for the trade
- Hardening (i.e., heat treating) metals and metal products for the trade
- Heat treating metals and metal products for the trade
- Shot peening metal and metal products for the trade
- Tempering metals and metal products for the trade