SS316L 201 Stainless Steel Hex Metal Bolts Nuts Washers Superior Corrosion Resistance for Heavy-Duty Applications
Product Description:
The M24 M27 Stainless Steel Hex Heavy Metal Bolt Nut Washer A4-70 SS316L Corrosion-Resistant is a high-performance fastener designed for use in industries requiring robust and durable components that can withstand challenging environmental conditions. This fastener system is typically employed in demanding applications such as marine, chemical, and industrial settings, where corrosion resistance and mechanical strength are paramount. To understand its importance and functionality, it is essential to explore the components, materials, and benefits of such a fastening solution.
Material and Corrosion Resistance
The key feature of this fastener lies in its material composition. Made from SS316L, a grade of stainless steel, the bolt, nut, and washer set are highly resistant to corrosion. Stainless steel is known for its durability and ability to withstand the effects of rust and environmental degradation, but SS316L takes this a step further. SS316L is a low-carbon variant of SS316, which improves weldability and reduces the risk of carbide precipitation. This material is particularly resistant to chloride corrosion, making it an ideal choice for applications in saltwater or highly acidic environments, such as those found in marine industries or chemical plants. The “A4-70” designation further signifies the material’s strength and composition; the “A4” indicates a grade of stainless steel commonly used for highly resistant bolts and fasteners, while “70” refers to a yield strength of 700 MPa, a metric used to determine the material’s ability to resist deformation under stress.
Applications
Primary Functions
1. Strong and Secure Fastening
The primary function of a hex bolt is to join two or more components securely. Its hexagonal head allows for high torque application, ensuring a tight and durable connection. This makes it ideal for heavy-duty applications where strength and reliability are critical.
2. Versatility
Hex bolts are highly versatile and can be used in a wide range of applications, from construction and automotive to machinery and household projects. They are suitable for both permanent and temporary fastening.
3. Load Distribution
Hex bolts are designed to distribute loads evenly across the fastened components. This helps prevent stress concentrations and reduces the risk of material failure, particularly in high-load environments.
4. Ease of Installation and Removal
The hexagonal head allows for easy installation and removal using common tools like wrenches or sockets. This makes hex bolts user-friendly and convenient for maintenance and repairs.
Materials and Finishes
Hex bolts are manufactured from various materials to meet specific application requirements:
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Carbon Steel: Common for general-purpose applications due to its strength and affordability.
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Stainless Steel: Offers corrosion resistance, making it suitable for outdoor or marine environments.
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Alloy Steel: Provides high strength and durability for heavy-duty applications.
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Brass or Bronze: Used in applications requiring corrosion resistance and non-magnetic properties.
Finishes such as zinc plating, galvanization, or coating can be applied to enhance corrosion resistance and improve appearance.
| No. | C% | Cr% | Ni % | Mo % |
| 304 | 0.07 | 17.5-19.5 | 8.0-10.5 | / |
| 316 | 0.08 | 16.0-18.0 | 10.0-14.0 | 2.00-3.00 |
| 301 | 0.15 | 16.0-18.1 | 6-8 | / |
| 310 | 0.08 | 24-26 | 19-22 | / |
SS316L stainless steel is a low-carbon version of the 316 stainless steel. It is an austenitic stainless steel known for its excellent corrosion resistance and high-temperature performance. The low carbon content, typically less than 0.03%, reduces the risk of intergranular corrosion, making it particularly suitable for applications involving welding.
The chemical composition of SS316L includes chromium (16.00%–18.00%), nickel (10.00%–14.00%), and molybdenum (2.00%–3.00%), which contribute to its superior corrosion resistance. It also contains manganese (up to 2.00%), silicon (up to 1.00%), phosphorus (up to 0.045%), and sulfur (up to 0.030%). These elements enhance its mechanical properties and overall performance.
Mechanically, SS316L has a tensile strength ranging from 515 to 680 MPa, with a yield strength of 205–515 MPa. It exhibits good ductility, with an elongation at break of 35%–50%. These properties make it suitable for a wide range of applications, including those requiring high strength and durability.
SS316L is highly resistant to corrosion, including pitting and crevice corrosion, due to its high chromium and molybdenum content. It performs well in marine environments and is often used in chemical processing equipment, food processing machinery, and medical devices. Its resistance to high temperatures also makes it suitable for applications in the aerospace and automotive industries. About Us 
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