Grade H21 Steel:-
Grade H21 steel, a member of the hot work tool steel family, epitomizes the pinnacle of performance and precision in high-temperature applications. Renowned for its exceptional strength, thermal stability, and wear resistance, H21 steel is the material of choice for critical tooling and die casting operations.
At its core, Grade H21 steel boasts a meticulously engineered alloy composition designed to excel in hot work applications. Enriched with elements such as chromium, tungsten, and vanadium, this steel exhibits outstanding hardness, thermal conductivity, and resistance to thermal fatigue, making it an ideal choice for tooling subjected to extreme temperatures and mechanical stresses.
The hallmark feature of Grade H21 steel lies in its ability to maintain its mechanical properties at elevated temperatures, ensuring reliable performance in demanding environments. Its high thermal conductivity facilitates efficient heat transfer during forging, extrusion, and die casting processes, while its exceptional wear resistance prolongs tool life and reduces production costs.
Moreover, Grade H21 steel offers superior machinability and weldability, allowing for the fabrication of complex components with precision and efficiency. Its fine microstructure and uniform distribution of alloying elements enable precise machining and shaping, ensuring dimensional accuracy and surface finish in the final product.
Furthermore, Grade H21 steel embodies a commitment to sustainability and environmental responsibility. Its high recyclability and low carbon footprint make it a preferred choice for green engineering initiatives, contributing to the conservation of resources and reduction of environmental impact.
In essence, Grade H21 steel represents the epitome of excellence in hot work tool steel technology, offering unmatched performance, reliability, and sustainability for critical applications in forging, extrusion, and die casting operations. As industries continue to evolve and innovate, this steel stands ready to meet the challenges of tomorrow, driving progress and shaping the future of engineering materials.
Chemical Composition :
| C | Mn | Si | Cr | Ni | Mo | P | S | P+S | V | W |
| 0.30 – 0.40 | 0.20 – 0.40 | 0.15 – 0.30 | 3.00 – 3.75 | – | – | – | – | – | 0.30 – 0.50 | 8.75 – 10.00 |
HARDNESS :
| HB | HRC |
TECHNICAL PROPERTIES :
| Machinability | Polish ability | Texturability |
APPLICATIONS :
Good combination of hot hardness, temper resistance & moderate toughness.