Metal Coating, Engraving & Heat Treating
NAICS 3328
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Industry Summary
The 4,830 metal finishing companies in the US provide finishing services for manufacturing and construction customers. Major revenue categories include metal coating and engraving; electroplating, plating, polishing, anodizing, and coloring; and metal heat treating. Companies provide finishing services for customer-supplied metal goods and may sell finished metal goods. Some companies offer finishing services for alternative materials, such as plastics and composites.
Waste and Regulation
The metal finishing industry is highly regulated because processes often involve dangerous chemicals and the generation of hazardous waste.
Captive Finishing
Companies may compete with manufacturers that opt for in-house metal finishing activities instead of outsourcing to a third party (“captive finishing”).
Recent Developments
Oct 26, 2026 - Heat Treat Industry Expects Stronger October Demand
- US heat treat industry suppliers anticipate stronger business conditions in October 2026, with inquiries and bookings reaching their highest projected levels in 12 months, according to Heat Treat Today. The Inquiries Index rose to 70.0 from 65.0 in September, while the Bookings Index climbed to 70.0 from 59.4. Backlogs increased to 64.3 from 60.0, suggesting an expanding pipeline of work. Meanwhile, the Health of the Manufacturing Economy Index eased to 60.0 from 62.2 but remained in expansion territory. The indicators suggest improving near-term prospects for US metal coating, engraving, and heat treating businesses, particularly those serving manufacturers. Stronger bookings and backlogs may support equipment utilization, although rising costs and production constraints could affect profitability.
- US manufacturing expanded for the ninth consecutive month in September 2026, supporting prospects for companies providing metal coating, engraving, and heat treating services. The Institute for Supply Management (ISM) reported a Manufacturing PMI of 54.5, compared with 54.6 in August. The New Orders Index increased to 55.3 from 53.7, while the Production Index remained in expansion territory at 56.7, despite declining from 58.3. Growing manufacturing activity may increase demand for metal finishing and heat treatment services used in industrial components, machinery, and transportation equipment. However, ISM reported ongoing shortages of several metals and electronic components, along with rising material prices. These conditions could increase costs and complicate production scheduling for metal treatment businesses.
- The rapid expansion of AI and hyperscale data centers could create a significant growth opportunity for protective and powder coating providers, according to a recent Products Finishing report. More than $1.7 trillion is expected to be invested in data center construction through 2030, increasing demand for durable finishes on server racks, electrical enclosures, structural steel, cooling systems, generators, and security infrastructure. Powder coatings are increasingly favored for their corrosion resistance, durability, and environmental performance, while demand is shifting toward more advanced systems with better heat, chemical, moisture, and fire resistance. Overall, the outlook is favorable for metal finishers that can meet stricter performance, sustainability, and supply-chain requirements.
- Producer prices for metal coating, engraving, and heat treating firms rose 6.3% in September compared to a year ago, according to the latest US Bureau of Labor Statistics data. Industry producer prices have generally been rising steeply and steadily since early 2021 when demand for finished metal goods increased post pandemic. Employment in the industry grew 2% year over year in August, while the average wage at coating, engraving, heat treating, and allied activities was flat during the same period, reaching $24.51 per hour, easing from its peak in September 2025, BLS data show.
Industry Revenue
Metal Coating, Engraving & Heat Treating

Industry Structure
Industry size & Structure
The average metal coating, engraving, and heat treating service provider works out of a single location, employs about 27 workers, and generates $6-7 million annually.
- The metal coating, engraving, and heat treating services industry comprises about 4,830 firms that employ about 129,000 workers and generate about $31. billion annually.
- Most industry categories are concentrated, with the top 50 companies accounting for about 67-75% of industry revenue. The electroplating, plating, polishing, anodizing, and coloring sector is less concentrated, with the top 50 companies accounting for 34% of sector revenue.
- Companies specializing in metal coating and engraving account for about 50% of firms and 57% of industry revenue. Companies specializing in electroplating, plating, polishing, anodizing, and coloring account for about 39% of firms and 25% of industry revenue. Companies specializing in metal heat treating account for 11% of firms and 18% of industry revenue.
- Large companies include Material Sciences Corporation, Metal Improvement Company (Curtiss-Wright Surface Technologies), and Bodycote. Some large companies are owned by foreign companies or have international operations.
Industry Forecast
Industry Forecast
Metal Coating, Engraving & Heat Treating Industry Growth

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