{"id":13713,"date":"2022-03-01T10:41:05","date_gmt":"2022-03-01T10:41:05","guid":{"rendered":"https:\/\/www.smetals.co.uk\/?post_type=product&#038;p=13713"},"modified":"2026-07-09T10:20:10","modified_gmt":"2026-07-09T10:20:10","slug":"4mm-thick-mild-steel-sheets-metal-plate-plain-steel","status":"publish","type":"product","link":"https:\/\/www.smetals.co.uk\/product\/4mm-thick-mild-steel-sheets-metal-plate-plain-steel\/","title":{"rendered":"4mm Thick Mild Steel Sheets &#8211; Metal Plate (Plain Steel)"},"content":{"rendered":"<h2>4mm Thick Mild Steel Sheets\u00a0<\/h2>\n<p>Mild sheet steel metal plate is the most popular product that we offer. It is a quality strong metal for myriad DIY and industrial applications. The uses for mild steel plate metal include automotive bodywork, boxes and security doors.<\/p>\n<p>Speciality Metals boasts of top-quality 4mm thick mild steel sheets metal plates in plain steel that are available in various sizes. These steel sheets are durable, versatile and perfect for a wide spectrum of applications. Customers can trust that they are getting only the best quality steel sheets from their UK supplier. The sheets offer great weldability, machinability, formability and bendability, making them an ideal choice for any project. With its numerous advantages, these steel sheets are guaranteed to provide long-lasting performance without any compromise. Choose Speciality Metals for top-quality steel sheets that won&#8217;t disappoint.<\/p>\n<p>We also offer <strong><a href=\"https:\/\/www.smetals.co.uk\/product\/mild-steel-sheet-metal-off-cuts-spare-pieces\/\">mild steel off-cuts<\/a><\/strong> too if that suits your requirement better.\u00a0<\/p>\n<div>\n<h4>Key product details:<\/h4>\n<ul>\n<li><strong><strong>Thickness &#8211;<strong>4mm Thick Mild Steel Sheets <\/strong><\/strong><\/strong><strong>(8 SWG)<\/strong><\/li>\n<li><strong>Metal &#8211; Mild Steel DC01<\/strong><\/li>\n<li><strong>Finish &#8211; Cold Rolled<\/strong><\/li>\n<\/ul>\n<p>Sheet metal is also available in <strong><a href=\"https:\/\/www.smetals.co.uk\/product-category\/sheet-metal\/aluminium-sheet-cut-to-size\/\" target=\"_blank\" rel=\"noopener noreferrer\">aluminium <\/a><\/strong>and\u00a0<a href=\"https:\/\/www.smetals.co.uk\/product-category\/sheet-metal\/304-stainless-sheet-cut-to-size\/\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>stainless steel<\/strong>.<\/a><\/p>\n<\/div>\n<h4>Why Choose Speciality Metals<\/h4>\n<div>\n<p>Speciality Metals is known to be the United Kingdom\u2019s best up-and-coming small-quantity metal company.<\/p>\n<\/div>\n<ul>\n<li><strong>FREE UK delivery on all orders<\/strong><\/li>\n<li><strong>Order dispatch within 24 hours of order<\/strong><\/li>\n<li><strong>Located in Warrington, UK which is the UK home of mesh and metals<\/strong><\/li>\n<li><strong>Our experienced staff are experts in the mesh market and care personally about your customer experience<\/strong><\/li>\n<\/ul>\n<p>Furthermore we stock a vast range of plain <a href=\"https:\/\/www.smetals.co.uk\/product-category\/sheet-metal\/\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>sheet plate<\/strong><\/a> options that compliment our mesh range perfectly.<\/p>\n<div>\n<p>Over 50,000 customers of Specialty Metals are provided with fast, friendly customer service every year. We\u2019re the place to try when you need metal of any shape and size. We\u2019re based in Warrington, UK. We pride ourselves on our rapid turnaround and a large range of options.<\/p>\n<p>&nbsp;<\/p>\n<\/div>\n<hr \/>\n<h4>FAQs About Mild Steel Sheet<\/h4>\n<h2>Can 4mm Thick Mild Steel Sheet be Used Outdoors?<\/h2>\n<p>Yes, a 4mm thick mild steel sheet can be used outdoors, but some considerations need to be taken into account.<\/p>\n<p>Mild steel, also known as low carbon steel, is known for its strength and malleability, making it suitable for a variety of applications. However, it is susceptible to corrosion when exposed to the elements, particularly moisture and oxygen, which are abundant in an outdoor setting.<\/p>\n<p>For outdoor use, it&#8217;s advisable to protect the mild steel sheet to ensure its longevity. This can be done by applying a protective coating such as paint, powder coating or galvanising. These coatings serve as a barrier against moisture and oxygen, thereby preventing the onset of rust.<\/p>\n<p>The choice of coating often depends on the specific application and the environment where the steel sheet is used. For example, galvanising, which involves applying a layer of zinc to the steel, offers excellent corrosion resistance and is often used in heavy-duty outdoor applications.<\/p>\n<p>Paint or powder coating can also be suitable and offer the added benefit of a wider range of color choices, which can be beneficial for aesthetic purposes.<\/p>\n<p>While 4mm thick mild steel sheets can be used outdoors, they should be appropriately treated or coated to prevent corrosion and ensure their durability in outdoor conditions. Always consult with a professional or your supplier to choose the most suitable protection method for your specific application and environment.<\/p>\n<h2>How Should a 4mm Thick Mild Steel Sheet be Stored?<\/h2>\n<p>Storing a 4mm thick mild steel sheet properly is crucial to maintaining its quality and preventing unwanted rust and corrosion. The ideal storage location is a dry, clean and well-ventilated space.<\/p>\n<p>Steel sheets should be stored flat and off the ground, on pallets or shelves, to avoid contact with dirt and moisture that can cause corrosion. If pallets or shelving are not available, use blocks or other supports to elevate the sheets from the ground. Try to avoid stacking different types of metals on top of each other to prevent potential chemical reactions that could lead to corrosion. If sheets are stacked, placing protective materials like cardboard or wood between the sheets can prevent scratching or damage to the surfaces. If the steel sheets become wet, for instance due to rain or high humidity, they should be dried immediately and thoroughly to prevent the onset of rust.<\/p>\n<p>For long-term storage, you might consider applying a light coat of oil or another type of corrosion inhibitor to the steel surface. This can provide a protective layer that prevents exposure to air and moisture. When stored properly, a 4mm thick mild steel sheet can maintain its quality and lifespan, making it ready for use whenever it&#8217;s needed. It&#8217;s also essential to handle these sheets with care to prevent any physical damage during movement or transportation.<\/p>\n<h2>How Much Does a 4mm Thick Mild Steel Sheet Weigh?<\/h2>\n<p>The weight of a 4mm thick mild steel sheet can be calculated using the formula: weight = thickness x width x length x density of steel. The thickness is 4mm, but the width and length would depend on the specific dimensions of the sheet you are referring to.<\/p>\n<p>In general, the density of mild steel is approximately 7.85 g\/cm^3 or 7850 kg\/m^3. The thickness, usually measured in millimeters, needs to be converted to meters for the calculation. Hence, 4mm is equal to 0.004 meters.<\/p>\n<p>So, for instance, if you have a 4mm thick mild steel sheet that is 1 meter wide and 2 meters long, the weight of the sheet would be 0.004 m (thickness) x 1 m (width) x 2 m (length) x 7850 kg\/m^3 (density) = 62.8 kg.<\/p>\n<p>This calculation provides a theoretical weight, the actual weight can differ slightly due to manufacturing tolerances. Please note that the size of steel sheets can vary greatly, and this is just an example. To get an accurate weight, you should use the actual dimensions of the sheet in question. Always consult with the supplier to get the most accurate weight for the steel sheets you&#8217;re using.<\/p>\n<h2>How do I Clean a 4mm Thick Mild Steel Sheet?<\/h2>\n<p>Cleaning a 4mm thick mild steel sheet requires a few simple steps. Before beginning, make sure to put on safety gloves and goggles to protect yourself from any potential sharp edges on the steel.<\/p>\n<p>For general cleaning, you can use a clean, lint-free cloth or sponge dampened with a mild soap or detergent mixed with warm water. Wipe down the surface of the steel sheet to remove any dirt, dust or grime. Make sure to rinse thoroughly afterward to ensure no soap residue is left on the surface.<\/p>\n<p>If the mild steel sheet has oil or grease stains, a degreaser can be used. Apply the degreaser according to the instructions on the bottle, then wipe or rinse it off.<\/p>\n<p>For rusted areas, you can use a wire brush or sandpaper to gently scrub away the rust. Start with a coarse grit and move to a finer grit for the best results. It&#8217;s important to remember to always scrub in the direction of the grain of the steel, not against it, to avoid causing scratches. After removing the rust, apply a rust converter or primer to protect the area from future rusting.<\/p>\n<p>Once the sheet is clean, dry it thoroughly to prevent moisture from causing rust. Use a dry cloth or allow it to air dry in a well-ventilated area. Regular cleaning can extend the life of a mild steel sheet and keep it looking its best. Always handle the sheets carefully to avoid injury, and if the steel sheet is part of a larger structure, ensure that the cleaning process doesn&#8217;t interfere with the rest of the structure or any electrical components.<\/p>\n<p>&nbsp;<\/p>\n<div>\n<hr \/>\n<\/div>\n<div>\n<p><em><strong>Check out our recent article <a href=\"https:\/\/www.smetals.co.uk\/aluminium\/frequently-asked-questions-about-aluminium-sheet-metal\/\">&#8216;Cold Rolled vs Hot Rolled Steel&#8217;<\/a><\/strong> <strong>for a deeper dive into mild steel metal. We have also recently written an article explaining <a href=\"https:\/\/www.smetals.co.uk\/how-to-cut-metal-a-beginners-guide\/\">how to cut metal<\/a>, which is well worth a read before you select the metal that best suits your requirement. <\/strong><\/em><\/p>\n<p><em><strong>We are also adding product videos to our <a href=\"https:\/\/www.youtube.com\/channel\/UCiXs6a1s28-ze5npuodZaJg\">YouTube channel.<\/a> Our goal for our blogs, videos and help guides is to answer as many questions as possible to help to explain the possibilities of metal materials to our customers. <\/strong><\/em><\/p>\n<\/div>\n<div>\n<p><em><strong><a href=\"https:\/\/www.smetals.co.uk\/contact\/\" target=\"_blank\" rel=\"noopener noreferrer\">Contact us<\/a> today if you have any questions at all. We are always really keen to help in any way that we can. <\/strong><\/em><\/p>\n<p><em><strong>We are also very proud of our highly popular <a href=\"https:\/\/www.ebay.co.uk\/itm\/303565335602?hash=item46ade76c32:g:52wAAOSwn35hVB0a&amp;amdata=enc%3AAQAHAAAA4FIP%2Fs70tTymwnOpAeuHgnIW%2FBAqQpqeR6HroKjmP36%2F%2FmVroq%2BkLuGAaqDDsbaUfezU7AgwWXqeZQmNQ9vUrKB0HvNfHGAMnrWAV3zaYwfaFXdb1ZPy%2BLRANrk4r34iTPERZMCKc4gz2jaHnnKfbWTRLl8wCNCXv1nnvzGyQjL%2BLPk7pduZ2rCUZMa%2B9dwXbeWE8%2FtoTTxof0z3NBEHraiWUdiMaSNaodMXjF7JoSwCP86rmynJf3BJud112BCDM1VXm9EmoScImhggISQRN41JtQY58AhlfjQsHHCoaCVv%7Ctkp%3ABFBMrKS3v79g\" target=\"_blank\" rel=\"noopener noreferrer\">eBay store<\/a>, check us out there too.<\/strong><\/em><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p><em><strong>\u00a3 MULTIBUY SAVINGS &#8211; Order 3 For 10% Off<\/strong><\/em><\/p>\n<p><em><strong>\u2714 Specialists In Rapid Shipments Of Any Size<\/strong><\/em><\/p>\n<p><em><strong>\u2714 FREE UK Delivery Included<\/strong><\/em><\/p>\n<p><em><strong>\u2714 Immediate Express Dispatch From Stock<\/strong><\/em><\/p>\n<p><em><strong>\u2714 Tracked Delivery with Order Updates<\/strong><\/em><\/p>\n<p><em><strong>\u2714 30-Day Returns Accepted<\/strong><\/em><\/p>\n<p><em><strong>\u00a3<\/strong> <a href=\"https:\/\/www.smetals.co.uk\/product\/mild-steel-sheet-metal-off-cuts-spare-pieces\/\"><strong>Check Out Our Clearance Listing For Savings\u00a0<\/strong><\/a><\/em><\/p>\n<p><strong>@ \u260f \u00a0<a href=\"https:\/\/www.smetals.co.uk\/contact\/\"><em>Bespoke Cuts &amp; Larger Lengths Available<\/em><\/a><\/strong><\/p>\n<p>Looking for top-quality steel sheets? Look no further than Speciality Metals! Our 4mm Thick Mild Steel Sheets Metal Plates (Plain Steel) are the perfect choice for a wide variety of applications. Whether you&#8217;re building a new structure or repairing an existing one, our steel sheets are versatile, durable and easy to work with. With great weldability, machinability, formability and bendability, our steel sheets are perfect for customising to fit your exact needs. And with a range of sizes to choose from, we make it easy to find the right fit for your project. So why wait? Browse our selection today and experience the quality and durability of Speciality Metals mild steel sheets for yourself!<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone wp-image-20868 size-full\" src=\"https:\/\/www.smetals.co.uk\/wp-content\/uploads\/2022\/09\/Mild-Steel-Sheet.jpg\" alt=\"\" width=\"1280\" height=\"224\" srcset=\"https:\/\/www.smetals.co.uk\/wp-content\/uploads\/2022\/09\/Mild-Steel-Sheet.jpg 1280w, https:\/\/www.smetals.co.uk\/wp-content\/uploads\/2022\/09\/Mild-Steel-Sheet-300x53.jpg 300w, https:\/\/www.smetals.co.uk\/wp-content\/uploads\/2022\/09\/Mild-Steel-Sheet-1024x179.jpg 1024w, https:\/\/www.smetals.co.uk\/wp-content\/uploads\/2022\/09\/Mild-Steel-Sheet-768x134.jpg 768w, https:\/\/www.smetals.co.uk\/wp-content\/uploads\/2022\/09\/Mild-Steel-Sheet-600x105.jpg 600w\" sizes=\"(max-width: 1280px) 100vw, 1280px\" \/><\/p>\n","protected":false},"featured_media":19183,"comment_status":"open","ping_status":"closed","template":"","meta":{"_exactmetrics_skip_tracking":false},"product_brand":[],"product_cat":[145,134],"product_tag":[53,23,141],"class_list":["post-13713","product","type-product","status-publish","has-post-thumbnail","product_cat-mild-steel-plate-cut-to-size","product_cat-sheet-metal","product_tag-4mm-thick","product_tag-mild-steel","product_tag-sheet-metal","first","instock","taxable","shipping-taxable","purchasable","product-type-variable"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>4mm Thick Mild Steel Sheets - Metal Plate (Plain Steel) - Speciality Metals<\/title>\n<meta name=\"description\" content=\"4mm thick mild metal steel sheets. Ideal for use in many DIY and engineering applications. Can be welded, drilled and painted. Strong\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.smetals.co.uk\/product\/4mm-thick-mild-steel-sheets-metal-plate-plain-steel\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"4mm Thick Mild Steel Sheets - Metal Plate (Plain Steel) - Speciality Metals\" \/>\n<meta property=\"og:description\" content=\"4mm thick mild metal steel sheets. Ideal for use in many DIY and engineering applications. Can be welded, drilled and painted. 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