
420 tool steel, also known as AISI 420, W.Nr. 1.4021, and X20Cr13, is a martensitic stainless steel grade that combines good corrosion resistance with high strength after heat treatment. When properly quenched and tempered, it can reach hardness levels around 50 HRC, making it a reliable choice for parts requiring wear resistance, durability, and performance in mildly corrosive environments. Nifty Alloys is a 420 tool steel supplier providing certified, fully traceable material in multiple forms for customers in the UAE, the wider Middle East, and global export markets in line with international standards.
QT800 is a steel grade that has undergone quenching and tempering, characterized by its high strength, toughness, and resistance to wear. The term "QT" refers to Quenched and Tempered, whereas "800" signifies the typical tensile strength, which is around 800 MPa.
QT800 is commonly utilized in sectors where durability, resistance to fatigue, and mechanical strength are of utmost importance.
Applications of 420 Tool Steel
Chemical Composition of 420 Tool Steel
Forging
Heat Treatment of 420 Tool Steel
Stress Relieving
Equivalent Grades of 420 Tool Steel
Mechanical Properties of 420 Tool Steel
Key Properties of 420 Tool Steel



Nifty Alloys LLC is a trusted 420 stainless steel (420 tool steel) supplier in Dubai, UAE, offering high-quality martensitic stainless steel conforming to UNS S42000 / EN 1.4021 (X20Cr13). This grade is widely used in cutting tools, surgical instruments, pump and valve components, shafts, and industrial blades due to its excellent high hardness, wear resistance, and moderate corrosion resistance . 420 stainless steel can be heat treated for enhanced strength and durability in demanding applications. We supply this material in bars, plates, sheets, and custom-cut sizes, all with Mill Test Certificates (MTC) for full traceability. Nifty Alloys ensures fast delivery across GCC (UAE, Saudi Arabia, Qatar, Kuwait, Oman, Bahrain) and global exports to Europe, Asia, Africa, and the Americas.