STAINLESS STEELS


Stainless steels are a family of metal alloys characterized by their resistance to corrosion. This unique property is mainly due to the presence of chromium, which forms a passive layer of chromium oxide on the material’s surface. Stainless steels are widely used in applications requiring durability, hygiene, and corrosion resistance.


Classification of Stainless Steels


Stainless steels can be classified into several main categories, each with specific properties that make them suitable for various applications:

  1. Austenitic Stainless Steels
  2. Ferritic Stainless Steels
  3. Martensitic Stainless Steels
  4. Duplex Stainless Steels
  5. Precipitation-Hardening Stainless Steels


Properties of Stainless Steels


Steel Type Main Composition Corrosion Resistance Mechanical Strength Ductility
Austenitic Cr 16-26%, Ni 6-22% Excellent Good High
Ferritic Cr 10.5-27% Good Moderate Moderate
Martensitic Cr 11-17%, C 0.1-1.2% Moderate High Low
Duplex Cr 18-28%, Ni 4.5-8% Excellent Very High Moderate
Precipitation-Hardening Cr 12-18%, Ni 3-9% Excellent Very High Low

Graph: Corrosion Resistance vs Mechanical Strength


The graph illustrates the relationship between corrosion resistance and mechanical strength for different types of stainless steels.


Microstructure Images


The following image shows the typical microstructure of an austenitic stainless steel.


Applications of Stainless Steels


Stainless steels are widely used in various industries, including:

  • Food Industry: Used for kitchen tools, food containers, and processing equipment.
  • Medical Sector: Used for surgical instruments, implants, and medical devices.
  • Construction: Used for architectural elements, structures, and cladding.
  • Automotive Industry: Used for exhaust components, engine parts, and body panels.
  • Chemical Industry: Used for reactors, pipelines, and storage tanks.


Conclusion

Stainless steels are an excellent choice for companies looking for durable, corrosion-resistant materials with a good strength-to-weight ratio. Their versatility makes them ideal for a wide range of industrial and commercial applications. Investing in high-quality stainless steels can lead to significant long-term economic benefits by reducing maintenance costs and increasing product lifespan.


For companies aiming to improve the reliability and efficiency of their manufacturing processes, collaborating with experienced and reliable suppliers is essential to ensure access to materials that meet stringent quality and performance standards.

Autore: Alice Libardi 31 luglio 2025
Bolts are essential components in many mechanical and structural applications. However, the shape and design of bolts can significantly affect their load capacity. Bolts with reduced sections, deep threads, or special geometries may have lower breaking loads compared to standard bolts. This document analyzes the mechan
Autore: Alice Libardi 31 luglio 2025
Bolts are essential components in many mechanical and structural applications. However, the shape and design of bolts can significantly affect their load capacity. Bolts with reduced sections, deep threads, or special geometries may have lower breaking loads compared to standard bolts. This document analyzes the mechan
31 luglio 2025
I bulloni sono componenti essenziali in molte applicazioni meccaniche e strutturali. Tuttavia, la forma e il design dei bulloni possono influenzare significativamente la loro capacità di carico. Bulloni con sezioni ridotte, filettature profonde o geometrie speciali possono avere carichi di rottura inferiori rispetto ai
31 luglio 2025
The IS UNI EN ISO 898-1:2013 standard specifies the mechanical properties of metric threaded bolts and studs made of carbon steel and alloy steel. This standard covers a wide range of strength classes, determining the requirements for properties such as tensile strength, hardness, and resilience.
31 luglio 2025
La norma UNI EN ISO 898-1:2013 specifica le proprietà meccaniche di bulloni e viti prigioniere a filetto metrico realizzati in acciaio al carbonio e acciaio legato. Questa norma copre un'ampia gamma di classi di resistenza, determinando i requisiti per proprietà come la resistenza a trazione, la durezza e la resilienza
31 luglio 2025
The ISO metric system (International Organization for Standardization) is one of the most widely used measurement systems in the world, particularly in industrial and engineering applications. A fundamental part of the ISO system includes bolts and nuts, which are essential for assembling various mechanical components.
31 luglio 2025
Il sistema metrico ISO (Organizzazione Internazionale per la Standardizzazione) è uno dei sistemi di misurazione più utilizzati al mondo, in particolare nelle applicazioni industriali e ingegneristiche. Una parte fondamentale del sistema ISO include bulloni e dadi, che sono essenziali per l'assemblaggio di vari compone
31 luglio 2025
Milling is one of the most versatile techniques in chip removal mechanical processing, used to create flat surfaces, grooves, complex profiles, and pockets on a wide variety of materials. This process relies on the use of a rotating multi-cutting tool, called a milling cutter, which removes material from the workpiece
31 luglio 2025
La fresatura è una delle tecniche più versatili nella lavorazione meccanica per asportazione di truciolo, utilizzata per creare superfici piane, scanalature, profili complessi e cavità su una vasta gamma di materiali. Questo processo si basa sull'uso di un utensile rotante a più taglienti, chiamato fresa, che rimuove m
31 luglio 2025
Drilling is one of the fundamental techniques in machining by chip removal, used to create cylindrical holes in solid materials. This process is essential in many industrial applications, as holes are required for component assembly, fluid passage creation, and the insertion of fasteners. Drilling can be performed on v
Show More