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thin dense chrome

Nodular Thin Dense Chrome

Optimizing Metal Surfaces: Armoloy’s Nodular Thin Dense Chrome Solutions

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The Benchmark in Coating and Electroplating Technology

The Armoloy Nodular Thin Dense Chrome process is a proprietary electroplating technique that yields a micronodular, crack-free surface texture and imparts a hard, uniform, metallic chromium surface deposit on metal components. This thin, uniform layer guarantees that part tolerance and balance are maintained without the necessity for subsequent machining, even when dealing with intricate geometries, all while delivering simultaneous benefits regarding protective qualities and performance improvements.
Armoloy provides two distinct surface textures (Micro Nodular / Micro Cracked), each specifically engineered to address your requirements. Our team of engineers conduct a thorough assessment for each application, enabling them to customize the advantages by choosing the appropriate texture and co-deposits, thus optimizing your component's performance. This proactive approach effectively safeguards against metal failures and elevates machine performance and output efficiency.

Armoloy’s Nodular Surface Solution

The Armoloy Corporation helps global manufacturers protect their most valuable, high-precision components with a broad spectrum of engineered compositions of Thin Dense Chrome coatings.

Nodular Thin Dense Chrome (NTDC) stands as a reliable choice among Armoloy’s offerings for global manufacturers, serving as a reliable solution to reduce friction, combat wear and corrosion, enhance lubrication properties, and reinforce metal surfaces across diverse applications, ultimately extending their longevity and enhancing operational reliability.

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Nodular Thin Dense Chrome Highlights

  • High wear resistance
  • Increased surface hardness
  • Low coefficient of friction
  • Improved release
  • Enhanced corrosion resistance
  • Uniform deposit thickness even on complex geometries
  • Thin, precise deposits
  • Consistent, uniform matte finish
  • Low processing temperature
  • Broad effective temperature range

Proven applications

Applying Armoloy Thin Dense Chrome can improve the long-term performance of applications within the following industries, as well as many others:

  • Plastic Injection Molding
  • Machined Components
  • Pumps & Compressors
  • Food Processing & Packaging
  • Automation & Linear Motion
  • Oil & Gas Extraction
  • Medical
  • Aerospace
  • Nuclear
  • Renewable Energy


  • Aerospace Material Specification SAE AMS2438 Plating, Chromium Thin, Hard, Dense Deposit
  • Aerospace Material Specification SAE AMS2406 | AMS-QQ-C-320, Chromium Plating (Electrodeposited)
  • Aerospace Material Specification SAE AMS2460, Plating, Chromium
  • Process Specification No. 180 Nodular Thin Dense Chromium (NTDC) Plating
  • Honeywell GPS3116-1H Plating, Specialized
  • Fisher FFS 2E1 Chromium Coating for Service to 1100F(593C)
  • MIL—C-23422 Military Specification, Chromium Plating, Electrodeposited
  • AMS2406 Plating, Chromium, Hard Deposit
  • ASTM B650 Standard Specification for Electrodeposited Engineering Chromium Coatings on Ferrous Substrates

Performance Characteristics

Nodular Thin Dense Chrome by the Numbers

  • Surface hardness up to 78Rc
  • 10% - 67% reduction in coefficient of friction
  • Corrosion resistance tested to AMS 2438 per ASTM B-117
  • Taber Wear Index (TWI) as low as 0.7
  • Thermal expansion range of 2.7 - 4.6 (10 ̄6/°F)
  • Density of 7.14 g/cm ̄3 at 20°C
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  • Typical deposit range of .0001 to .0003" (2.54 to 7.62 µm)
  • Effective deposit range of .000050” to .0007” (1.27 to 17.78 µm)
  • Withstands temperatures of -400°F to 1600°F (-240°C - 870°C)
  • Low processing temperature, <150° F (<65°C)
  • Bond strength exceeding 125,000 PSI
  • Excellent resistance to broad range of chemicals including acids, bases, and solvents
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Nodular Thin Dense Chrome

Features & Benefits

Absolute adhesion

Will not flake, crack, or separate from the base metal

Micronodular surface

Minimizes opposing surface contact, dramatically reduces friction, improves release characteristics

Low processing temperature <150°F

Eliminates annealing and will not distort the base metal

High wear resistance

Exceptional for sliding applications and abrasive wear

Chemical resistance

Stable in acids, alkalis, solvents and gasses

Anti-galling characteristics

Excellent resistance to adhesive wear, enhanced tolerance of low-lube

Pure metallic non-toxic chromium coating

USDA approved coating and FDA compliant, nontoxic (USP tested, REACH compliant, RoHS compliant), Bio-compatible surface

No sharp edge buildup

Minimizes dimensional change

Thin, precise deposits

Does not require post plate machining. Will not affect part tolerances or balance

Lubrication retention

Nodular surface retains wet and dry lubricants

Global reach

Armoloy-licensed applicators in North America, Europe, Africa, and Asia

Diverse industries

Widely used in aerospace, nuclear, oil & gas, and food processing & packaging

The Science Behind Nodular Thin Dense Chrome

With a hard and dense, yet thin chromium coating, Armoloy Thin Dense Chrome’s micronodular surface texture improves and protects a wide range of high precision metal surfaces without affecting part tolerances. We apply nodular thin dense chrome in a chemical bath through a proprietary process and ensure the chromium metal coating remains effective at deposits as low as .000050″ (1.27 µm).

Our nodular thin dense chrome plating reduces the wear, friction and corrosion of components with a nodular finish—which improves lubrication retention and reduces exposure between surface area to help prevent metal failure.

Additional Metal Treatments

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How Metals Fail

Some of the most common metal failures include:

Armoloy’s different metal coating solutions help industries avoid costly metal failures and unplanned downtime.

Partner With Us

Eliminate metal failure from your operations. Meet our group of curious, innovative engineers and learn how we can help improve your industry with science-based solutions.