Stelmi 1000 Hour Chrome Bars

Stelmi 1000 hour 0.001” min. plate thickness per side gives 1000+ hours of neutral salt spray corrosion resistance.

By adding extra chrome plate layers, Stelmi America, LLC uses its unique and proprietary plating method to produce hard chrome plated steel bars that are 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 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. Corrosion ratings are evaluated using ISO 10289 with virtually all test samples showing zero corrosion after testing.

Stelmi 1000 Hour Specifications

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

GRADE AND SIZES

• 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

LENGTHS

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

INDUCTION HARDENED (if specified)

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

CHROME PLATE THICKNESS

• 0.001" per side minimum, also available to your specification
• Concentric anodes give superior plate thickness uniformity and no unplated bar ends

CHROME PLATE SURFACE

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

DIMENSIONAL TOLERANCES

• 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.
  
  
• STANDARD TOLERANCES:
  (Undersized variation only; + 0.000”)
  From 0.750” to less than 2.500” =  -0.0015”
  From 2.500” to less than 3.000” =  -0.002”
  From 3.000” to less than 4.000” =  -0.003”
  From 4.000” to 5.000” =  -0.004”

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