What is 8Cr14MoV material knife?
8Cr14MoV inroduce
8Cr14MoV is a type of high-carbon chromium stainless steel that exhibits excellent hardness, wear resistance, and corrosion resistance after heat treatment. Its chemical composition primarily consists of 8% chromium, 14% molybdenum, 0.8% carbon, and a small amount of vanadium. In addition, it may also contain other alloying elements such as manganese, silicon, phosphorus, and sulfur.
The high chromium and molybdenum content in 8Cr14MoV stainless steel contribute to its good corrosion resistance, especially in acidic environments. The chromium forms a dense oxide film on the metal surface, effectively preventing corrosion. The addition of molybdenum further enhances the corrosion resistance of the stainless steel. The high carbon content gives 8Cr14MoV stainless steel its high hardness and wear resistance, making it suitable for manufacturing high-strength and wear-resistant tools, kitchen knives, scissors, and other applications.
Moreover, the addition of vanadium increases the strength and hardness of the stainless steel, further improving its wear resistance and corrosion resistance. The mechanical properties of 8Cr14MoV stainless steel include a yield strength of ≥735MPa, a tensile strength of ≥1180MPa, an elongation of ≥10%, and an impact toughness of ≥90J.
8Cr14MoV stainless steel is commonly used in precision machining and the manufacture of various tool shapes. It is typically heat-treated by heating to a sufficiently high temperature to dissolve the alloying elements uniformly in the austenite lattice, followed by quenching to achieve high hardness. The steel is then tempered at a suitable temperature to adjust its hardness, reduce brittleness, and improve the toughness and durability of the tool. The tempering temperature depends on the desired tool performance and is usually between 200-300°C.
In summary, 8Cr14MoV stainless steel is a highly versatile material with excellent properties that make it suitable for a wide range of applications where high hardness, wear resistance, and corrosion resistance are required.
