Historical Version s - view previous versions of standard. More A Bolting materials in this specification covers rolled, forged, or hot-extruded bars, and also bolts, nuts, screws, washers, studs, and stud bolts. Materials shall adhere to specified contents of carbon, manganese, phosphorus, sulfur, silicon, nickel, chromium, molybdenum, tungsten, titanium, columbium, aluminum, vanadium, boron, and copper. Materials shall be subjected to tension, stress-rupture, and hardness tests. Materials shall conform to yield strength, tensile strength, elongation, reduction of area, Brinell hardness, and Rockwell hardness requirements.
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The ASTM A is a specification for stainless or alloy steel bolting materials that are used for industries that involve high temperature. These classes allow variations in hardness, temperature resistance, pressure resistance, tension, stress-rupture, yield strength, elongation, and other specifications. Depending on the classes, ASTM A materials contain specified amounts of several elements such as carbon, silicon, nickel, chromium, molybdenum, titanium, columbium, aluminum, vanadium tungsten, boron, manganese, phosphorus, sulfur and copper.
The yield strength ranges from 50 to ksi. A is recognized to be ideal for use as industrial fasteners such as bolts, nuts, screws, studs, stud bolts, washers, and bars. They may come covered, rolled, or heat treated. Most manufacturers also apply coatings to enhance resistance to chemical and corrosive environments.
Because of their excellent temperature resistance, A bolting materials are most widely used in industries such as petro-chemical, offshore, power, aerospace, automotive, heavy engineering, and the military. They are used to bolt high temperature environments like valve flanges, heat exchangers, and pressure vessels.
Moreover, A fasteners can also be used for general bolting applications. A plays an important role in different applications in major industries worldwide. It is only right that they should come from reliable manufacturers. When purchasing this type of material, you should ensure that you select a manufacturer that offers a wide range of high standard products.
Also make sure that the manufacturer has a solid and decent reputation in the industry. They should be able to provide excellent customer service, guarantee high standard products at competitive prices, as well as provide fast shipping and secure payment options. More importantly, the manufacturer should be knowledgeable of the varying needs and standard requirements of different industries.
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