Materials Used for Screw Manufacturing


The ISO Metric System is an international standard for screws that defines dimensions, tolerances, and material specifications.ISO screws are widely used in various industrial and commercial applications thanks to their standardization, which ensures interchangeability and reliability.This document examines the most common materials used in the production of ISO screws, their properties, and specific applications.


Materials Used


Carbon Steel


Carbon steel is one of the most commonly used materials for screw manufacturing.This material offers good strength and hardness, making it ideal for general-purpose applications.


Properties of Carbon Steel:

Properties Value
Tensile Strength 400 - 550 MPa
Hardness (Rockwell Scale) 50 - 60 HRC
Density 7.85 g/cm³

Stainless Steel


Stainless steel is chosen for screws that require corrosion resistance.
It is widely used in
marine, medical, and food-related environments.


Properties of Stainless Steel

Properties Value
Tensile Strength 500 - 750 MPa
Hardness (Rockwell Scale) 70 - 80 HRC
Density 8.0 g/cm³

Titanium Alloys


Titanium alloys are used in applications that require both strength and lightness.They are commonly found in the aerospace industry and in high-performance applications.


Properties of Titanium Alloys:

Properties Value
Tensile Strength 900 - 1100 MPa
Hardness (Rockwell Scale) 30 - 40 HRC
Density 4.5 g/cm³

Applications of Materials


Industrial Sector


Carbon steel is used in structures and mechanical components where strength is crucial. Stainless steel, on the other hand, is preferred in corrosive environments and in applications that require sterility, such as in the food and medical industries.


Aerospace and High-Performance Sector


Titanium alloys are chosen for critical components that require both lightness and high strength, such as in aircraft and space vehicles.


Other Materials Used


In addition to the materials mentioned above, there are other alloys and materials used for specific applications. Aluminum alloys are used for lightweight applications, while plastic materials are used to produce non-conductive screws.


Composite Materials Table:

Material Main Properties Applications
Aluminum Alloys Lightweight, moderate strength Electronic components, lightweight structures
Plastic Materials Non-conductive, corrosion-resistant Electronics, marine applications

Conclusion


In summary, the choice of material for ISO screws depends on the specific application requirements.The standardization of the ISO system ensures interchangeable and reliable screws, regardless of the material used.
Carbon steel, stainless steel, and titanium alloys are among the most commonly used materials, each with its own characteristics and advantages.

Autore: Alice Libardi 31 luglio 2025
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