JFE Steel, which has a high tensile strength of 1300MPa class and toughness and fatigue strength equal to or higher than Ni-containing alloy steel powder, even though it does not contain nickel making it machinable, has developed the Ni-free alloy steel powder "FM1300S" for excellent powder metallurgy applications. When manufacturing sintered parts at the customer's factory, parts can be manufactured by ordinary sintering instead of high-temperature sintering that exceeds 1200 degree Celsius using a special furnace, which is a significant cost. Not only can it be reduced, but energy consumption and CO2 emissions can also be reduced.Alloy steel powder containing 4% Ni is widely used for sintered parts, but it is said that not only the machinability deteriorates after sintering and the processing cost increases, but also it is easily affected by the Ni market conditions. There are challenges. We have developed and sold the Ni-free alloy steel powder "FM series" with a diverse lineup, and have contributed to improving the product quality and reducing costs for our customers. On the other hand, for parts that require 1300 MPa class tensile strength, high-temperature sintering is required regardless of whether 4% Ni alloy steel powder or Ni-free alloy steel powder is used. Further cost reduction was required.Therefore, JFE has developed the alloy steel powder "FM1300S", which is a mixture of fine copper powder and high-purity pure iron powder in which molybdenum powder is diffused and adhered. Since fine Cu powder and Mo powder on the surface of the particles promote sintering, we succeeded in increasing the tensile strength to exceed 1300 MPa even in normal sintering. In addition, high-purity pure iron powder enables high density during compression molding, achieving high strength, high toughness, and high fatigue strength equal to or higher than that of 4% Ni alloy steel powderThis not only significantly reduces costs, but also reduces energy consumption and CO 2 emissions compared to conventional high-temperature sintered parts with a tensile strength of 1300 MPa. In the future, JFE aims to apply it to automobile parts such as sprockets that require high strength, and construction machinery parts that require wear resistance.High-temperature sintering A sintering method in which parts are placed side by side on a special tray with high heat resistance and inserted one tray at a time in a sintering furnace at around 1,250 degree Celsius with a pusher device.Ordinary sintering Sintering using the most commonly used mesh belt furnace maximum temperature 1,150 degree Celsius. Since parts can be inserted continuously with a belt conveyor, productivity is higher than that of high-temperature sintering.