440C Stainless Steel Supplier in UAE | UNS S44004 Nifty Alloys LLC 

Nifty Alloys LLC is a premier supplier and stockist of 440C stainless steel, a high-carbon martensitic grade engineered for exceptional hardness and wear resistance. We provide certified materials to meet the rigorous demands of engineering, toolmaking, and high-performance component manufacturing across the UAE. 

Grade 440C is recognized for its ability to achieve the highest hardness of any stainless steel alloy after heat treatment. This makes it the material of choice for applications requiring superior strength, dimensional stability, and moderate corrosion resistance, such as ball bearings, valve components, and cutting instruments. 

As a dedicated stockist, Nifty Alloys LLC ensures the consistent availability of 440C stainless steel in various forms. Our commitment is to supply high-quality, fully traceable materials that adhere to international standards, supported by reliable service and on-time delivery for your critical projects. 

What is 440C Stainless Steel (UNS S44004 / EN 1.4125) 

440C, designated as UNS S44004 and EN 1.4125, is a high-carbon chromium stainless steel. Its martensitic microstructure, achieved through specific heat treatment processes, provides a unique combination of extreme hardness, excellent wear resistance, and good strength. 

The high carbon content, typically between 0.95% and 1.20%, is crucial for forming chromium carbides, which contribute significantly to the material's hardness and abrasion resistance. While its corrosion resistance is lower than that of austenitic grades, it is sufficient for environments involving fresh water, mild acids, and industrial atmospheres, especially when the surface is polished. 

Key Features & Benefits 

440C stainless steel is specified for applications where performance cannot be compromised. Its primary attributes make it a reliable material for demanding industrial use. 

• High Hardness: After heat treatment, 440C can achieve a Rockwell hardness of up to 60 HRC, making it one of the hardest stainless steels available. This ensures excellent resistance to deformation under load. 
• Superior Wear Resistance: The high carbon content and presence of hard chromium carbides provide exceptional resistance to abrasion and wear, extending the service life of components. 
• Good Strength: The material maintains high strength and rigidity, making it suitable for structural components in demanding applications. 
• Effective Heat Treatability: 440C responds predictably to heat treatment, allowing for precise control over its final mechanical properties, including hardness and toughness. 
• Moderate Corrosion Resistance: In the hardened and polished condition, it resists corrosion from fresh water, steam, petroleum products, and mild chemicals. 
• Excellent Polishability: 440C can be polished to a mirror-like finish, which enhances its corrosion resistance and makes it suitable for aesthetic and precision applications.