Stainless Steel Enclosures
Stainless steel enclosures provide steadfast and unyielding protection for electrical components. Primarily constructed from stainless steel, these enclosures repel corrosion that can threaten their integrity over time. For this reason, they are especially popular in demanding environments, such as those found in chemical plants, oil and gas refineries, or wastewater treatment facilities, which frequently put all kinds of moisture or corrosive chemicals in contact with enclosures.
Enclosures must often satisfy precise criteria, such as the NEMA rating, if they are to meet required standards. The NEMA rating prescribes an enclosure's capacity to handle certain environmental conditions. For instance, an enclosure rated NEMA 4X provides a superior level of protection against dust, rain, and even hose-directed water. Because it satisfies these guidelines, an enclosure with a NEMA 4X rating can be used in applications both indoors and out.
Decisions about which enclosure to select rely entirely on the needs of the operation. If one values ready entry, then handles and entry points must be a priority. If the reverse is true and easy entry has to be kept to an absolute minimum, then the enclosure has to have a much tighter appearance overall. The aesthetic appearance of the stainless steel enclosure should also be taken into consideration. After all, the way an enclosure looks matters a lot, particularly if these situations are in a commercial or industrial setting where a seal on the entrance can present a finished appearance that withstands day to day use.
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Stainless Steel Enclosures: Type 304 vs 316
304 Stainless Steel
304 Stainless Steel contains 18% chromium and 8% nickel. It is the most widely used stainless steel within industrial applications. 304 stainless steel resists corrosion and oxidizing agents, which can cause rusting. However, it can tarnish. 304 stainless steel is very strong and can be bent without decreasing the strength, but it can be difficult to manipulate. Because of its corrosive resistance, 304 stainless steel enclosures are commonly used in dairy plants, mills, bakeries, and many other food processing industries.
316 Stainless Steel
316 Stainless Steel is a much higher grade of stainless steel containing 16% chromium, 10% nickel and 2% molybdenum, which significantly increases its resistance to pitting and cracking. It has increased corrosive resistance to chloride pollutants, such as salt. 316 stainless steel enclosures are ideal for areas there may have a high salt content, such as coastal areas and areas that use de-icing salts. This type of stainless steel is much more resistant to chemical environments that include sulphuric acid, phosphoric acid or many other chemicals. These types of stainless steel enclosures can be found in areas with high levels of corrosive agents, such as water, wastewater, chemical plants and fertilizer plants. Both 304 and 316 stainless steel enclosures have a NEMA rating of NEMA 4X because they are corrosion resistant, however it is important to remember to never use any chemicals that contain chlorine.