Metal Finishing & Hard Chromium for the following industries:

  • Mold Components
  • Shafts
  • Rolls
  • Tool & Die
  • Machine shop
  • Textile
  • Commercial
  • Hardware
  • Machinery
  • Office Equipment
  • Cutting Tools
Characteristics of Hard Chrome:
  • Extends the life of the part.
  • Provides very good corrosion protection.
  • Coefficient of friction is 0.015 to 0.40 on steel.
  • Taber Wear is 2-3 mg/1000 cycles.
  • Non-magnetic.
  • The melting point of chrome is 1610 degrees C.
  • Adhesion strength is 35,000 PSI.
  • Ductility is 0.1%.
  • Ultra-hard, durable coating used for wear, abrasion and corrosion resistant protection
  • Hard Chromium is used to repair worn or mis-machined parts
  • Range of thickness from .000020″ to .035”+
  • Capacity is 16 feet long and 2 tons

Secondary Operations:

We perform Mass Finishing Vibratory Tumbling and Deburring.

National Chromium also sells the media and compounds used in vibratory polishing or deburring.

Hard Chromium Coating

Applications for Hard Chrome:

  • Used in machinery and mating surface applications because of its hardness.
  • National Chromium has extensive experience fabricating fixtures and auxiliary anodes which enables us to efficiently apply chrome on intricate components and surfaces.
  • Hard Chrome’s resistance to abrasives results in a longer life for mold components and provides for better mold release characteristics and easier mold cleaning.
  • Hard Chrome is used extensively to repair worn or scored machine parts, shafts and cylinders.
  • Several cost effective masking methods are utilized to protect surfaces and areas that do not require plating.


National Chromium
10 Senexet Rd
Putnam, CT 06260
PH: 860-928-7965

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