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Stainless steel is a martensitic stainless steel. Carbon content.% Chromium content -%. It is high-quality stainless steel with strong rust resistance.
Scope of application: Mainly used to manufacture bearing parts working in corrosive environments and non-lubricating strong oxidizing atmospheres. It has good high temperature dimensional and temperature resistance, so it can also be used as corrosion-resistant and high-temperature bearing steel. In addition, it can also be used to make high-quality cutting tools such as medical scalpels, scissors, nozzles, bearings, etc. The ability to withstand dynamic loads is low
Introduction
It has the highest hardness among all stainless steels and heat-resistant steels. Used for nozzles and bearings: It is a steel type that improves the easy cutting performance of steel. Used for automatic lathes. Martensitic stainless steel has the same characteristics of hardening through quenching as ordinary alloy steel, so a wide range of different mechanical properties can be obtained by selecting the grade and heat treatment conditions.
The carbon content of stainless steel is -.%. This kind of steel has good rust resistance. It is a commonly used stainless steel for imported mass-produced knives. Its chromium content is as high as -.%. It is also one of the earliest stainless steels used in knife making and is very popular. If heat treated as stainless bearing steel, it is generally recommended to carry out cryogenic treatment before tempering operation. This cryogenic treatment improves the hardness of the steel and increases its wear resistance and dimensional stability. Therefore, cryogenic treatment is often used for tool heat treatment
Characteristics
The disadvantages of higher hardness and medium wear resistance when grinding are that it is relatively sticky and heats up quickly. It is recommended to use a chrome corundum or microcrystalline corundum grinding wheel for grinding. The annealing temperature is very low. As the cutting tool and bearing are heat treated, the hardness can usually be reached. If cryogenic treatment is carried out, the hardness can be reached. With strong corrosion resistance and toughness, it is more widely used in hand-made knives and high-quality factory-made knives.
Application
It has higher hardness among domestic stainless steel grades. Mainly used to manufacture bearing parts working in corrosive environments and non-lubricating strong oxidizing atmospheres. It has good high temperature dimensional and temperature resistance, so it can also be used as corrosion-resistant and high-temperature bearing steel. In addition, it can also be used to make high-quality cutting tools such as medical scalpels, scissors, nozzles, bearings, etc. : It is a steel type that improves the easy cutting performance of steel. It is used for automatic lathes. Martensitic stainless steel has the same characteristics of hardening through quenching as ordinary alloy steel. Therefore, a wide range of different mechanical properties can be obtained by selecting the grade and heat treatment conditions. . The ability to withstand dynamic loads is low. After quenching, it has high hardness and good corrosion resistance (magnetic). Tableware (knives) and turbine blades are harder than steel after quenching (magnetic). Knife blades, nozzles, valves, rulers, tableware (scissors).
Ingredients
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Mechanical properties
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Hardness: annealing, quenching and tempering
Mechanical properties: Internal stress (/) Tensile strength (/) (%)< br/> Heat treatment process
Heat treatment specifications and metallographic structure heat treatment specifications:
) Annealing ~ ℃ slow cooling
) Quenching ~ ℃ oil cooling
) Tempering ~ ℃ rapid cooling.
Metallographic structure: The structure is characterized by martensitic structure.
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