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HIPERCHROMIUM® SERIES

Excellent corrosion resistance.

Hiperchromium 200 is a bar with a chrome layer of 20 µm, able to guarantee a rating 10 after 150 hours and a rating 9 after 200 hours. Tested according to the norm ISO 9227 (natural salt spray test).


High rating
regarding the evaluation of results obtained. (ISO 10.289)


Diameters up to 20 mm, Chromelayer 14 μm min, tolerance f8

Diameters over 20 mm, Chromelayer 20 μm min, tolerance f7

Chrome layer 20 µm min, tolerance f7

Chromelayer hardness HRC 66-69
(HV 0,1 / HV 850-1000)

Roughness Ra max. 0,20 µm

150 HOURS RATING 10 AND 200 HOURS RATING MINIMUM 9 IN NAURAL SALT SPRAY

Technical Data

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LABORATORY TEST according to ISO 9227 (NSS)
Results evaluation according to ISO 10.289

 

DIAMETERS > 20 mm

StraightnessBetter than 0,5 / 2000 m
ToleranceAccording to ISO f7
Out of RoundnessWithin ½ of ISO tolerance field
Surface Roughness Rt 3 μm max.Ra < 0,2 μm
Rt < 3 μm max
Chromium Layer HardnessHRC 66 - 69 (HV 0,1 / HV850-1000)
Steel GradesCK 45, 18MnV5 / 20MnV6
42MnV7, 45MnV1
38MnVS6, 42CrMo4
Induction HardeningCK 45/50,
45MnV1, 20MnV6
38MnVS6, 42CrMo4

STELMI BARS ARE FULLY CHROMED UP TO THE ENDS



Gauss distribution of corrosion tests results.
Stelmi: Rating ≥ 9 minimum
Competition: rating 9 as anaverage.

Gauss distribution of
corrosion tests results The graphic shows the substantial difference between what Stelmi declares about the evaluation of the corrosion resistance (Rating) and what is often declared by other producers. Gauss distribution of
corrosion tests results »

Category: Linear shafts
Application fields: All applications
Application fields

the range

Since 2001 Stelmi is world leader in corrosion resistence of its chrome bars and tubes.

The HIPERCHROMIUM technology has established new standards in the fluidpower industry: 200, 500 and 1000 hours of corrosion resistance in Neutral Salt Spray test ( in compliance with ISO 9227 standard) with a minimum rating ) ( according to ISO 10289 standard).
A technological milestone than many companes still try to reach.
Thousands tests in our quality laboratory confirmed by indipendent laboratories and by the most prestigious Customers around the world proved the reliability of this technology.
The HIPERCHROMIUM TECHNOLOGY is fully developed in our R&R Department: mone than 35 years of technological know-how, proudly MADE IN ITALY.

INFINITY® SERIES
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