Nord-Lock Group About Nord-Lock Combating Corrosion Effectively | Nord-Lock

APPLICATIONS AND PERFORMANCE

Here’s a detailed view of what to expect of our washers’ corrosion resistance in the real world and 
the operating environments they’re able to withstand.  
 
Nord-Lock steel washer corrosion resistance Environment category Corrosion risk Examples of environment
25 years* C4 High Industrial areas and coastal areas with moderate salinity
15 years* C5 Very high Industrial areas with high humidity and aggressive atmosphere and coastal areas with high salinity

*According to ISO 12944-6:2018, 1,000 hours in a salt spray chamber correspond to approximately 25 years in C4 environment or approximately 15 years in C5 environment.

Examples of applications
Steel Stainless steel (ss) 254 SMO® ALLOY C-276 ALLOY 718
General steel applications General stainless steel applications. Non chlorine / acid environments General salt water applications, pumps, chloride applications, heat exchangers, nuclear, desalination, food processing & medical equipment General acidic environments, process and chemical industry, evaporators, offshore downhole tooling Applications with high temperatures, gas turbines, turbo charges, incinerators

 

Corrosion resistance
Steel Stainless steel (ss) 254 SMO®

ALLOY C-276

 ALLOY 718
Minimum 1,000 hours in salt spray test (according to IS09227) PREN 27** PREN 45** PREN 68** PREN 29**

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