1.2379 Tool Steel: The Definitive Guide to a High-Performance Alloy 

1.2379 tool steel, also known by the AISI D2 designation, is a high-carbon, high-chromium cold work tool steel renowned for its exceptional wear resistance and edge retention. As a ledeburitic, air-hardening alloy, it offers an excellent combination of hardness, toughness, and compressive strength, making it a preferred material for demanding industrial applications. This steel provides superior performance in tooling operations where dimensional stability and long service life are critical. 

Nifty Alloys LLC is a leading tool steel supplier in the UAE, providing certified 1.2379 steel to meet stringent engineering requirements. We ensure our materials comply with international standards, delivering reliability for your most critical projects. 

Key Characteristics & Features 

1.2379 / D2 tool steel offers a unique combination of properties that deliver significant operational advantages. 

• Exceptional Wear Resistance: The high volume of chromium carbides in its microstructure gives it outstanding resistance to abrasive and adhesive wear, leading to longer tool life. 
• High Hardness: It is one of the hardest cold work tool steels available, capable of retaining a sharp cutting edge under stress. 
• Good Dimensional Stability: As an air-hardening steel, it experiences minimal distortion during heat treatment, which is critical for precision components. 
• High Compressive Strength: It can withstand high pressures, making it perfect for stamping, coining, and forming operations. 
• Adequate Toughness: While not as tough as lower-alloy steels, its toughness is sufficient for many cold work applications, preventing premature failure.