The Science Of Precision Coatings



For over 70 years, Armoloy TDC® has been the first name in thin dense chrome plating.  A precision coating that is effectively applied at .00005” to .0006”, Armoloy TDC® enhances the wear properties of precision components without the need for secondary machining operations. 

 Armoloy TDC® is a very thin, hard surface application with hardness values up to 78Rc and exceptional wear properties.   Protection from abrasive and erosive wear, as well as adhesive wear such as scoring, galling, seizing, is greatly enhanced.  Taber wear index values are less than 1.2 TWI as required by AMS 2438. 

 Unlike traditional hard chrome, Armoloy TDC® is a dense, crack free coating that provides corrosion resistance equivalent to 440 stainless steel and exceeds AMS 2438 requirements for salt fog testing. For applications requiring exceptional corrosion or chemical resistance, the Armoloy Bi-Protec coating adds an underlayer of electroless nickel for upgraded defense against corrosive wear. 

Due to the thin nature of the coating, part tolerances and surface finish are generally not affected.  The coating itself follows the microscopic variations of the part surface and finishes remain unaffected above 8 RMS.  Surfaces below 8RMS can be coated but required specialized pre-processing and should be discussed with an application engineer prior to coating.  The coating itself is highly lubricous, with coefficient of friction values as low as .12 vs .20 for uncoated steel.


Oil And Gas Extraction

In the field of oil and gas drilling and extraction, the Armoloy coatings are ideally suited for components operating in corrosive downhole environments. The coatings’ high corrosion and wear resistance... Read More

Machined Components

From fundamental components such as shafts, gears, and bearings, to the more complex components found in automated lines, packaging machines, and specialized machinery of every type, Armoloy Southeast can... Read More

Pumps And Compressors

For protection against the most common forms of wear including corrosive, abrasive, and erosive wear, consider coating your critical pump, valve and compressor surfaces with a protective Armoloy coating... Read More

Automation + Linear Motion

For over 20 years, Armoloy TDC has been the premier coating for the Linear Motion industry. The Armoloy TDC coating lowers the coefficient of friction of bearing steels, for smoother movement over rolling surfaces... Read More

Food Processing And Packaging

Apply Armoloy TDC and XADC to food-processing and food-packaging equipment and components for the most beneficial combination of wear resistance and corrosion resistance. The Armoloy coatings... Read More

Plastic Injection Molding

Through precise, engineered deposits, Armoloy TDC, XADC, and Nyflon 25 add incredible value to plastic injection molding applications, as well as those in the areas of extrusion and thermoforming... Read More


Armoloy TDC is an optimal metal surface coating for aerospace components that require improved wear and corrosion resistance, vast functional temperature range, and consistent, even deposits... Read More


Armoloy TDC is a precise, biocompatible, pure, metallic chromium coating for medical, surgical, laboratory and clean room environments. Highly trained coating professionals and strict... Read More


For over 30 years the Armoloy TDC coating has been applied to variety of nuclear industry devices including fuel cell and reactor core components. The improved wear and corrosion resistance of... Read More