Hardened, corrosion resistant stainless steel? No problem. Kolsterising® is an industry-proven, surface hardening technology for grades of stainless steel, cobalt and nickel-based alloys, providing ultimate hardness and improved mechanical and wear properties with no loss of corrosion resistance. Kolsterising is named after the head of the research group that invented the process in the 1980’s, dr ir Ben H. Kolster (1938-2011).
Stainless steel alloys are commonly used in corrosive environments for their superb corrosion resistance. Unfortunately these alloys exhibit poor galling and wear resistance limiting their life or range of application. This is why many industrial applications rely on Kolsterising® to eliminate galling. Kolsterising® not only overcomes the galling phenomenon, but also dramatically improves wear resistance and fatigue strength.
A comparison of surface hardness before and after Kolsterising® treatment. The treated materials show higher levels of hardness, resulting in improved wear resistance.
In the untreated condition a threshold galling stress of 45.5 MPa (6.6 KSI) was measured. Following Kolsterising® treatment, galling was completely eliminated. At a load setting of 842.5 MPa (122.2 KSI) the compressive yield strength of the material was exceeded, yet no galling was observed.
Kolsterising is just one of the surface treatments we offer.
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