Stainless Steel A2-70 Hex Bolt

A Stainless Steel A2-70 Hex Bolt is a specific type of fastener made from A2-70 stainless steel, which is a common designation for a particular grade of stainless steel. Let's explore the features and common uses of A2-70 hex bolts:

Features:

• Material Composition: A2-70 stainless steel is primarily composed of iron (Fe), chromium (Cr), and nickel (Ni). It is often referred to as AISI 304 stainless steel in the United States. The "A2" designation signifies that it is part of the 300 series stainless steels, which are known for their corrosion resistance properties.
• Tensile Strength: The "70" in A2-70 represents the minimum tensile strength in megapascals (MPa), which is approximately 700 MPa. This indicates that A2-70 stainless steel hex bolts have a moderate level of tensile strength suitable for many general-purpose applications.
• Corrosion Resistance: A2-70 stainless steel offers good corrosion resistance in various environments, particularly in moderately corrosive settings. Its high chromium content (typically around 18%) forms a protective oxide layer on the surface, which helps prevent rust and corrosion.
• Hex Head Design: Hex bolts are characterized by their hexagonal head shape, which allows for easy tightening and loosening with a wrench or socket tool. The hex head design provides a secure and stable grip during installation and removal.

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• ISO

  4032

• DIN

  931, 934, 970

• ASTM / ASME

  ASTM A193 / SA193

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Common Applications: A2-70 stainless steel hex bolts find use in a wide range of applications, including:

• Construction: They are commonly used in the construction industry for fastening structural components, such as beams, columns, and brackets.
• Machinery: A2-70 hex bolts are used in the assembly of machinery and equipment, where moderate strength and corrosion resistance are essential.
• Automotive: They can be found in automotive applications for fastening engine components, chassis parts, and various other components.
• General Fastening: A2-70 hex bolts are used in countless general-purpose fastening applications in industrial, commercial, and household settings.
• Outdoor and Non-corrosive Environments: These bolts are suitable for use in outdoor applications where they are not exposed to highly corrosive elements, such as saltwater or harsh chemicals.

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SS A2-70 Hex Bolts Specification

It's important to note that while A2-70 stainless steel provides good corrosion resistance in many environments, it may not be suitable for highly corrosive conditions, such as marine environments. In such cases, a higher-grade stainless steel, like A4-70 (AISI 316 stainless steel), which contains more nickel and molybdenum, would be a better choice for improved corrosion resistance. Additionally, the specific application requirements, including load-bearing capacity and environmental factors, should always be considered when selecting fasteners like A2-70 hex bolts.

Chemical Composition of Stainless Steel A2-70 Hex Bolts

Mechanical Properties of SS A2-70 Hex Bolts

Types of Stainless Steel A2-70 Hex Bolts