Plastics Companies
Home to the country's largest national laboratory and a major research university, the 15-county Knoxville-Oak Ridge region has become a center of expertise for advanced composites materials.
| Company | Location | Number of Employees | Service |
| Arconic | Blount | 995 | Aluminum ingot & coiled steel |
| B/S/H Home Appliance Corp. | Campbell | 380 | Ranges, stove tops, & barbecue grills |
| Lisega, Inc. | Sevier | 250 | Metal piping components |
| Eastern Plating, Inc. | Cocke | 136 | Chrome & zinc plating |
| Ball Corporation | Jefferson | 143 | Metal food containers |
| MPP Rockwood | Roane | 110 | Power metallurgy parts |
| Mountain Mold & Die | Sevier | 100 | Tool and die |
| Vestal Manufacturing | Monroe | 80 | Metal & steel home fireplaces |
| Highland Steel Erectors | Scott | 80 | Steel erectors |
| NGK Metals | Monroe | 70 | Insulators & copper beryllium alloys |
| Axis Fabrication & Machine Co. | Blount | 60 | Metal fabrication |
| Dienamic Tooling Systems, Inc. | Loudon | 48 | Sheet metal stamping dies |
| Parker TruTec | Sevier | 19 | Heat treating |
| Alloy Fabrication | Anderson | 18 | Metal fabrication |
| MHF Energy Solutions | Anderson | 12 | Metal fabrication |
| Metal-Tech of Tennessee | Cocke | 4 | Metal treatment |
Source: Book of Lists, community websites 2019