Stainless Steel Cable Cleats
Published 14 Feb 2019
uploaded by Chris Dodds - Sales & Marketing Manager
➡ Review the ranges of non-corrosive cable cleats manufactured from stainless steel provide retention of LV (Low Voltage), MV (Medium Voltage) and HV (High Voltage) cables for single, trefoil, quad and bundled applications – typically used to cleat and clamp cables in contaminated and industrial installations including hazardous area locations with potentially explosive atmospheres.
To select and specify the correct cable cleat for single cable applications consider: i) cleat spacing ii) cable diameter iii) peak short circuit current calculated according to IEC61914 and the installation environment – these factors could include ambient temperature, atmospheric corrosion, humidity, water, vibration, dust and solar radiation.
Why Stainless Steel ?
316 & 304 Grades of Stainless Steel
In general, cable cleats are manufactured from austenitic stainless steel due to its non-magnetic and corrosion resistant properties – the former ensuring the cable cleat won’t induce eddy currents or localised heating of the LV MV HV cable.
Austenitic stainless steel does become a little magnetic as a result of work hardening when processed. This magnetism can barely be detected with a magnet and so is not significant from an eddy current perspective.
There are many different types of stainless steel, but there are two principal variants when it comes to cable cleats.
304 austenitic stainless steel, often referred to as A2, is one of the most commonly used stainless steels. It has excellent corrosion resistant properties in most circumstances, although is susceptible in atmospheres where chlorides are present, making it unsuitable for use in coastal or marine environments.
316 austenitic stainless steel, often referred to as A4, contains Molybdenum, which provides resistance against chlorides. 316 is often referred to as marine grade stainless steel due to its suitability for use in coastal and offshore applications. If unsure a simple chemical test can determine whether Molybdenum is present and so differentiate between 304 and 316.
04 and 316 stainless steel are available in low carbon variants, namely 304L and 316L. These variants are immune to sensitisation (grain boundary carbide precipitation).
Any cable cleat which is manufactured from stainless steel and includes welding in the manufacturing process should be made in a low carbon (L) variant.
In a previous Blog we provided an evidence based case for stainless steel cable cleats where levels of atmospheric corrosion preclude use of other cable fixing materials.
Should you require technical specification support or a commercial quotation in order to place an order please do not hesitate to contact us.
- Ellis Patents – The Black Book Guide To Cable Cleats Size: 1.44 MB