Steel is the most common fastener material. What are the different types of Steel fasteners? The molybdenum content also improves resistance to pitting and increases strength at high temperatures. The molybdenum is added to help resist corrosion to chlorides (like sea water and de-icing salts). It is defined as a Chromium-Nickel austenitic alloy. Grade 304 is the standard '18/8' stainless that you will probably see in your pans and cookery tools.ģ16 Stainless Steel: contains 16% chromium, 10% nickel and 2% molybdenum. What are the different grades of Stainless Steel?ģ04 Stainless Steel: contains 18% chromium and 8% nickel, combined with a maximum of 0.08% carbon. In fact, due to their low carbon content, many stainless steel alloys cannot be hardened through heat treatment. It's a common misconception that stainless steel is stronger than regular steel. Because the anti-corrosive properties are inherent to the metal, it will not lose this resistance if scratched during installation or use.

Stainless steel is highly corrosion resistant for the price. Stainless steel is an alloy of low carbon steel and chromium for enhanced corrosion characteristics. What are the properties of Stainless Steel fasteners? We sell both and they can be requested per the customers requirements and application. There is thread the entire length of the set screw, whereas a bolt is only partly threaded at the end and has a shank up to the head. (See Metal Reactions -below) What is difference between a bolt or set screw?Ī bolt or a set screw only differ due to the thread length. In some environments and applications, sea salt, wet weather and galvanic corrosion must also be considered if changing fastener materials. Also, some equipment is designed so that the bolts will fail before more expensive or critical items are damaged. Harder bolts tend to be more brittle and may fail in specific applications. Replacing a bolt or set screw with a stronger one is not always safe. When replacing fasteners, it is generally best to match what you are replacing. Should you use the same type of fastener your replacing? At Valley Fasteners we predominantly sell steel bolts and set screws due to its robust longevity for industrial uses. The material can be important when choosing a fastener due to differences between metals in this case for strength, brittleness, corrosion resistance, galvanic corrosion properties and, of course, costs. In addition, some materials are available with a variety of coatings or platings to enhance the corrosion resistance or alter the appearance of the fastener. Many materials are further separated into different grades to describe specific alloy mixtures, hardening processes, etc. Got Questions | Ask Valley Fasteners What are fasteners made from?įasteners are manufactured in a wide range of materials from common steel to titanium, plastic and other exotic materials.

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