The DIN 938 M10x40 A2-70 L2A fastener is a double-ended stud bolt standardized by the Deutsches Institut für Normung (DIN), a German standards organization. This specific fastener is known for its high-quality material composition, exceptional mechanical properties, and broad applicability across various industries. In this article, we will delve into the specifications, advantages, applications, and material properties of this fastener.
Specifications
Dimensions
- Diameter (M10): The “M10” designation indicates a metric thread with a nominal diameter of 10 millimeters.
- Length (40mm): The fastener measures 40 millimeters in total length.
- Thread: The fastener features metric threading, adhering to standard DIN specifications.
Material
- A2-70 Stainless Steel: The “A2” refers to the material grade, indicating austenitic stainless steel. The “70” denotes the tensile strength, specifically 700 MPa (Megapascals).
Designation
- DIN 938: This designation signifies that the fastener conforms to the DIN 938 standard, which specifies the requirements for double-ended studs.
Coating
- L2A: The “L2A” designation typically refers to the coating or surface finish applied to the fastener, which enhances its corrosion resistance and durability.
Advantages
The DIN 938 M10x40 A2-70 L2A fastener boasts several advantages, making it a popular choice in various applications:
- Corrosion Resistance: The A2 stainless steel composition provides excellent resistance to corrosion, making it suitable for use in harsh environments, including marine and industrial settings.
- High Tensile Strength: With a tensile strength of 700 MPa, this fastener offers robust performance under high-stress conditions.
- Durability: The combination of high-quality materials and precise manufacturing processes ensures the fastener’s long-lasting durability and reliability.
- Versatility: The standardized dimensions and threading make this fastener compatible with a wide range of components and assemblies.
Applications
The versatility and durability of the DIN 938 M10x40 A2-70 L2A fastener make it suitable for a variety of applications across multiple industries:
Automotive Industry
- Engine Assembly: Used in securing engine components and assemblies due to its high tensile strength and resistance to thermal stress.
- Exhaust Systems: Ideal for fastening components exposed to high temperatures and corrosive environments.
Construction Industry
- Structural Connections: Used in connecting structural elements where reliable and strong fasteners are required.
- Facade Systems: Applied in securing exterior facade elements, especially in coastal areas prone to corrosion.
Marine Industry
- Deck Fittings: Utilized in securing deck fittings and equipment due to its exceptional resistance to saltwater corrosion.
- Hull Assembly: Employed in fastening hull components, ensuring structural integrity and longevity.
Aerospace Industry
- Aircraft Components: Used in assembling critical aircraft components where reliability and high performance are paramount.
- Spacecraft Assembly: Applied in the construction of spacecraft where resistance to extreme temperatures and environmental conditions is essential.
Material Properties
The A2-70 stainless steel used in the DIN 938 M10x40 A2-70 L2A fastener provides several material properties that contribute to its performance:
- Chemical Composition: The austenitic stainless steel is composed of chromium, nickel, and molybdenum, which enhance its corrosion resistance and mechanical properties.
- Mechanical Strength: The material exhibits high tensile strength and excellent ductility, allowing it to withstand significant mechanical stress without deformation.
- Thermal Stability: The stainless steel maintains its mechanical properties over a wide temperature range, making it suitable for use in high-temperature applications.
- Corrosion Resistance: The chromium content forms a passive oxide layer on the surface, protecting the fastener from corrosion and oxidation.
Conclusion
The DIN 938 M10x40 A2-70 L2A fastener is a versatile and reliable choice for a wide range of applications across various industries. Its high-quality material composition, exceptional mechanical properties, and resistance to corrosion make it an indispensable component in many assemblies and structures. Whether used in automotive, construction, marine, or aerospace industries, this fastener provides the strength, durability, and performance required to ensure the integrity and longevity of critical connections.
FAQs
What does “DIN 938” signify?
The “DIN 938” designation indicates that the fastener adheres to the German standards for double-ended studs set by the Deutsches Institut für Normung (DIN).
What are the dimensions of the DIN 938 M10x40 A2-70 L2A fastener?
The fastener has a diameter of 10 millimeters (M10) and a length of 40 millimeters.
What material is used for the DIN 938 M10x40 A2-70 L2A fastener?
This fastener is made of A2-70 stainless steel, an austenitic stainless steel known for its high tensile strength and excellent corrosion resistance.
What are the common applications of the DIN 938 M10x40 A2-70 L2A fastener?
It is commonly used in automotive, construction, marine, and aerospace industries for various assemblies requiring strong and durable connections.
What is the significance of the “L2A” coating on this fastener?
The “L2A” designation typically refers to a specific coating or surface finish that enhances the fastener’s corrosion resistance and durability.