Stainless steel is a family of iron-based alloys known for their corrosion and rust resistance, primarily due to the presence of chromium. A minimum of 10.5% chromium is essential for this property, forming a protective oxide layer on the steel’s surface. This makes it highly versatile and suitable for various applications, from kitchenware to industrial equipment. 

Key Characteristics:

• Corrosion Resistance: The chromium content creates a passive layer that prevents rust and corrosion, even in humid or wet environments. 
• Durability: Stainless steel is strong, long-lasting, and can withstand various temperatures. 
• Hygiene: Its smooth, non-porous surface is easy to clean and sanitize, making it ideal for food preparation and medical applications. 
• Aesthetics: It has a bright, polished finish that is visually appealing. 
• Recyclability: Stainless steel is 100% recyclable, contributing to its sustainability. 

Composition:

• Iron: The primary component of stainless steel. 
• Chromium: Essential for corrosion resistance, forming a protective oxide layer. 
• Nickel and Molybdenum: Often added to enhance corrosion resistance and strength. 
• Carbon: Present in varying amounts depending on the specific grade of stainless steel. 

Common Types and Applications:

• Austenitic:

Known for excellent corrosion resistance, weldability, and formability. Commonly used in kitchen equipment, food processing, and architectural applications. 

• Ferritic:

Good corrosion resistance and strength, often used in automotive components and household appliances. 

• Duplex:

High strength and corrosion resistance, particularly in harsh environments like marine and chemical processing. 

• Martensitic:

High strength and hardness, used in cutlery and surgical instruments.