Uses of DIN 931

DIN 931 bolts are commonly used in a wide range of applications in various industries, including construction, manufacturing, and automotive. Some of the common uses of DIN 931 bolts are:

1. Structural applications: DIN 931 bolts are often used in construction applications for fastening structural steel members, such as beams, columns, and trusses.
2. Machinery and equipment assembly: They are used in the assembly of heavy machinery and equipment, such as engines, turbines, and generators.
3. Automotive industry: This hex bolts are used in the automotive industry for fastening engine components, chassis parts, and suspension systems.
4. Aerospace: In the aerospace industry these are used for fastening aircraft components and structures.
5. Marine applications: Marine engineers uses this in marine applications for fastening deck hardware, rigging, and other structural components.

Materials for DIN 931

DIN 931 bolts are available in a variety of materials, and different standards specify the requirements for each material. Here are some of the commonly used materials for DIN 931 bolts, along with the corresponding standards:

Materials specified by ANSI/ASME standards:

• ASTM A193 Grade B7: This material is a high-strength alloy steel used in applications where high tensile strength and resistance to corrosion are required.
• ASTM A320 Grade L7: This material is a low-temperature steel used in applications where the bolt needs to perform in cold environments.

Materials specified by ASTM standards:

• ASTM A307 Grade A: This material is a carbon steel used in general-purpose applications that do not require high strength or resistance to corrosion.
• ASTM A325 Type 1: This material is a high-strength steel used in structural applications.
• ASTM A490 Type 1: This material is a high-strength steel used in heavy construction applications.

Materials specified by DIN standards:

• Steel Grade 8.8: This is a medium carbon steel that has a tensile strength of 800 N/mm² and is commonly used in general-purpose applications.
• Steel Grade 10.9: This is a high-strength steel that has a tensile strength of 1000 N/mm² and is commonly used in automotive and machinery applications.
• Steel Grade 12.9: This is a very high-strength steel that has a tensile strength of 1200 N/mm² and is commonly used in aerospace and other critical applications.

The choice of material for DIN 931 bolts will depend on the specific requirements of the application, including the load-bearing capacity, environmental conditions, and corrosion resistance.