Stelmi America LLC.
1601 Brooks Drive
Marshall, MI 49068
1 800 STELMI 5
(269) 781-6222

Stelmi 500 Hour Chrome Bars

Stelmi's standard of 0.001” min. plate thickness per side gives 500+ hours of neutral salt spray corrosion resistance with a rating of 10.

Stelmi America, LLC uses its unique and proprietary plating method to produce hard chrome plated steel bars that are more dimensionally uniform and far more corrosion resistant than those produced by conventional processes.

Stelmi America offers chrome plated bars and induction hardened chrome plated bars with an increasing range of corrosion resistance as tested against the ASTM B117-97 neutral salt spray standard. Corrosion resistance of our products and/or process is verified utilizing both in-house and certified independent laboratory testing.

Stelmi America’s chrome plated steel bars achieve their remarkable corrosion resistance purely from the chrome plating. Unlike all the other producers, we use no waxes or buffing compounds as temporary coatings to artificially enhance our corrosion test results.

Corrosion ratings are evaluated using ISO 10289:1999 with virtually all test samples showing zero corrosion after testing (10 rating).


.001" min CR = 500 hours min salt spray = Zero Corrosion


Stelmi 500 Hour Specifications

Stelmi America hard chrome plated steel bars or induction hardened chrome plated bars are available in a wide range of material conditions:


  • 1045 to 75,000 PSI min. yield strength — 1" to 5" diameter
  • 1045/1050 to 100,000 PSI min. yield strength (ASTM A-311 Class B) - 1" to 4.5" diameter
  • Alloys and higher strength steels are available


  • 24 ft lengths are standard or can be produced to your specifications (20 ft length minimum, 30 ft length maximum)


  • 50 Rc minimum surface hardness/0.050” min. effective case depth


  • 0.001" per side minimum for a minimun 500 hours of corrosion resistance
  • Concentric anodes give superior plate thickness uniformity and no unplated bar ends
  • 0.0005" per side minimum also available. 100 hour corrosion resistance


  • 67 to 72 HRc chrome plate hardness
  • 16 Ra maximum —  6 TO 12 Ra standard finish


  • Stelmi’s unique hard chrome plating process utilizes anodes that conform to the shape of the bar which allows for more exacting         size tolerances than conventional plating methods.

    (Undersized variation only; + 0.000”)
    From 0.750” to less than 1.500” =  -0.001”
    From 1.500” to less than 2.500” =  -0.0015”
    From 2.500” to/including 3.000” =  -0.002”
    Over 3.000” to/including 4.000” =  -0.003”
    Over 4.000” to/including 5.000” =  -0.005”

If you need tighter tolerances please let us know.
Metric Sizes available.

(269) 781-6222
1 800 STELMI 5
(269) 781-7723
Stelmi America, LLC.
1601 Brooks Drive
Marshall, MI 49068

© 2017 Stelmi America, LLC
Industrial Website Designers Manufacturing Web Site Developers Business Website Design
by Kallen Web Design
- 1-800-969-1625