4645 West Chicago Avenue
Chicago, IL 60651-3385
(773) 287-3716
sales@ChromiumIndustries.com







WHO WE ARE
Roll design is our strength. Chromium Industries is an experienced, capable supplier and reconditioner of large-piece industrial equipment: rolls, machine parts and frames. We've been serving industry for over 50 years with fast, economical, on-time, high-precision fabricated parts and finishing services.
WHAT WE DO
We design rolls for indutrial applications. We engineer and fabricate new parts and equipment. We finish or recondition your existing equipment. We do precision industrial plating and surface finishing. We work from prints, existing pieces, and your specifications.
WHAT WE CAN HANDLE
We handle all types of equipment up to 40 feet long ... 50 tons in weight ... and 9-foot diameter rolls. Of course we work on all sizes of equipment as well.
WE WELCOME YOUR INQUIRY
Give us your specifications, no matter how broad, and our engineers will design a roll that will meet or surpass your requirements. Our quotation will be based on a careful, realistic and complete evaluation of your needs. We welcome the opportunity to work with you on your toughest problems.

Platings
Finishes
Applications
DesignationRoughness
MU in RMS*
Plating
Thickness**
Min/Max
Plating Grade†

Flawless mirror (Cr)#12-4under 1.003" to .015" Custom Optical
Fine mirror (Cr or Ni)#12-32 to 4.002" to .020" Custom Optical
Standard mirror (Cr or Ni)#12-24 to 8.001" to .030"Standard Optical

Impervious (Cr)IMP12 to 32.001" to .015" Custom
Ground (Cr or Ni)GR12 to 32.001" to .050" Standard or Commercial
High polish (Cr or Ni)#96 to 10.001" to .050"Commercial
Smooth polish (Cr or Ni)#710 to 20.001" to .050" Commercial
SANI-PLATE™E/Nvariable.0001" to .020" Commercial

Tank finish (chrome)Cr/Tvariable.0001" to .050" Commercial
Tank finish (nickel)Ni/Tvariable.0001" to .020"Commercial
Tank finish (copper) Cu/Tvariable.0001" to .100" Commercial

COMBINATION
Hard chrome over E/L nickel
(Electroless Nickel)
Cr/Ni1 to 200.005" to .030" Custom or Standard
Cured Teflon over chrome
(CHROM/SLIK™)
R/Cr8 to 32.004" to .008" Custom or Standard
Cured Teflon over nickel
(NI/SLIK™)
R/Ni10 to 32.004" to .008" Standard
Hard chrome over copperCr/Cu1 to 32.004" to .100" Custom or Standard
Nickel over copperNi/Cu4 to 32.004" to .100" Custom or Standard

SOFT MATTELL10 to 50.005" to .020" Custom or Standard
CHROMIUM (CROMATTE™)MM50 to100.005" to .020" Custom or Standard
NICKEL (NIMATTE™)NN100 to 150.005" to .020" Custom or Standard
Uniform textured surfaces for
(paper & plastic mfg. where a
particular texture or release
is desired.
OO150 to 200.005" to .020" Custom or Standard

HARD MATTE
CHROMIUM (CROMATTE™) only.
Gripping surfaces for the
metal-working industry for
feed, straightener or pinch rolls.
#3A280 to 330.002" to .003" Custom or Standard
#3230 to 280.002" to .003"Custom or Standard
#4180 to 230.002" to .003"Custom or Standard
#5130 to 180.002" to .003"Custom or Standard

SPECIAL PURPOSE
Water retaining chromiumH/Cr6 to 16.005" to .020" Custom or Standard
Oil retaining chromiumO/Cr12 to 32.005" to .030" Standard
Pocketed chromiumP/Cr4 to 12.004" to .012" Custom

DEFINITION OF PLATING GRADES

CUSTOM
Roll geometry tolerances held to .001" or less on size, straightness, roundness and concentricity to the journals or bore. Base metal is welded, ground, etc., to optimize the uniformity of the final surface. Voids or indentations are virtually eliminated. Chromium is ground and super-finished to an optically flat surface.
STANDARD
Roll geometry tolerances held to .002" of the incoming shape. Voids or indentations larger than .032" are corrected. Smaller imperfections are permitted.
COMMERCIAL
Base metal defects are not corrected. Voids or indentations may show in the final surface depending on the condition of the base metal.

*Roughness and smoothness are relative terms and are a result of the processing method and the degree of control. The roughness values shown are the result of the measurement of the peaks and valleys that make up the surface. Measurements are taken with a stylus-type instrument that reads the average deviation from the mean line of the surface in microinches. The readings are averaged by either AA or RMS. **Plating thicknesses over .010" should be discussed with Chromium personnel for each intended application to specify the appropriate thickness.