the annealing temperature of 440C is very low, and the hardness after quenching is high, which usually reaches hrc56-58, with good corrosion resistance (magnetic) and strong toughness.

SKU: 9Cr18MoV 440C Category:
  1. General Details

    9Cr18MoV High Carbon High Chromium Martensite Stainless Steel

    9Cr18MoV rust resistance is good, is currently used in high-grade batch tool on the market of high-quality stainless steel, the strength and sharp than the ATS – 34, chromium content up to 16-18%, is the second most commonly used stainless steel (after ATS – 34), is also the earliest accepted by bladesmith stainless steel, and has been very popular, especially in subzero treatment process was developed, which strengthened the toughness of steel processing.

    9Cr18MoV steel is a high-carbon martensitic stainless steel that is widely used in the production of various knives, scissors, and other cutting tools. This versatile steel is known for its excellent edge retention, corrosion resistance, and toughness, making it an ideal choice for many applications.

    Similar Grade

    Execution Standard ZEICIN Grade GB AISI JIS DIN
    GB /T 20878-2007 9Cr18MoV 9Cr18MoV

    Main Chemical Composition %

    C Cr Mn Si Mo V
    ≤0.80 1.00~1.30 0.07~0.
    Co S P Ni Nb W
    ≤0.04 ≤0.03 <0.4

    Product Details

    # Name Specification
    1 Steel grade 440C/SUS440C/X105CrMo17/1.4125/154CM /AUS-10 /N690 /ATS-34
    2 Size T:2.0mm above; W:250mm below(according to order)
    3 Tolerance according to order
    4 Technique Thickness: 2.0-4.0mm Cold Rolled/ Thickness:4.0mm above Hot Rolled
    5 Surface Annealing
    6 Application chef knife/ Kitchen knife/Army knife/outdoor knife/forced knife/Scissors/Haircut scissors/pet scissors/stainless steel ball

    Effects of Rolling Temperature on the Microstructure and Properties of 9Cr18MoV Stainless Steel Composite Plate Fabricated by Hot-Rolling Bonding Process

    Properties and Benefits of 9Cr18MoV Steel for Cutting Tools

    9Cr18MoV steel is a high-carbon stainless steel that is made up of 9% chromium, 18% molybdenum, and vanadium. The high carbon content of this steel provides excellent edge retention, allowing for a razor-sharp edge that can last for an extended period of time. The molybdenum and vanadium in the steel further enhance its hardness and wear resistance, making it highly durable and long-lasting.

    One of the key benefits of 9Cr18MoV steel is its corrosion resistance. The high chromium content provides a passive layer of chromium oxide that protects the steel from rust and other forms of corrosion. This makes it an ideal choice for outdoor applications or for use in harsh environments where moisture or other corrosive substances may be present.

    Despite its high hardness and durability, 9Cr18MoV steel is also relatively tough, making it less prone to chipping or cracking. This combination of hardness and toughness makes it an excellent choice for a wide range of cutting tools, including kitchen knives, pocket knives, and other cutting implements.

    Properties of 9Cr18MoV Steel

    • Hardness

    One of the standout features of 9Cr18MoV steel is its high hardness. With proper heat treatment, it can achieve a Rockwell Hardness (HRC) of 58-60, making it ideal for applications requiring a sharp, durable edge.

    • Corrosion Resistance

    Thanks to its high chromium content, 9Cr18MoV steel offers excellent resistance to rust and corrosion. This makes it a popular choice for kitchen knives and outdoor tools that may be exposed to moisture.

    • Wear Resistance

    The addition of molybdenum and vanadium enhances the steel’s wear resistance, allowing it to maintain a sharp edge for longer periods, even with frequent use.

    • Toughness

    While 9Cr18MoV steel is extremely hard, it also maintains a good balance of toughness. This means it is less likely to chip or break under stress compared to other high-hardness steels.

    Benefits of 9Cr18MoV Steel

    • Long-Lasting Sharpness: Its high hardness ensures that blades remain sharp for extended periods.
    • Corrosion Resistance: Ideal for environments where the steel may be exposed to moisture and corrosive substances.
    • Durability: Balances hardness and toughness, making it suitable for rigorous use.
    • Versatility: Used in a wide range of applications from kitchenware to surgical tools.

    Heat Treatment of 9Cr18Mov Steel

    Heat treatment is the process of heating and cooling metal in order to change its properties. For 9Cr18MoV steel, the heat treatment process determines the final hardness, toughness, and other properties of the steel. There are various heat treatment techniques that can be used, such as quenching, tempering, and annealing.

    Quenching is the process of rapidly cooling the steel after it has been heated to a high temperature. This creates a hard and brittle structure, which can then be tempered to increase toughness. Tempering involves heating the steel to a lower temperature for a specific amount of time, which reduces the hardness and increases the toughness of the steel.

    Annealing is a heat treatment process that is used to soften the steel and improve its ductility. This process involves heating the steel to a high temperature and then slowly cooling it, which helps to relieve any internal stresses and improve the steel’s properties.

    The heat treatment process used for 9Cr18MoV steel will depend on the desired final properties and the intended application of the steel.

    How to Maintain 9Cr18MoV Steel

    To ensure your 9Cr18MoV steel tools and knives stay in top condition:

    • Regular Cleaning: Clean with mild soap and water after use, especially if exposed to acidic or salty conditions.
    • Proper Storage: Store in a dry place to avoid unnecessary exposure to moisture.
    • Sharpening: Use a high-quality sharpening tool to maintain the edge. Diamond or ceramic sharpeners are recommended for best results.
    • Oiling: Occasionally oil the blade to prevent rust and ensure smooth operation.

    Uses of 9Cr18Mov steel in The Knife Industry

    9Cr18MoV steel is widely used in the production of various knives, including folding knives, hunting knives, and kitchen knives. Its excellent edge retention, corrosion resistance, and toughness make it a popular choice for many knife makers, who appreciate its versatility and durability.

    One of the key benefits of using 9Cr18MoV steel in the production of knives is its ability to hold a sharp edge for an extended period of time. This makes it an ideal choice for outdoor applications, such as hunting and camping, where a sharp blade is essential. Additionally, its corrosion resistance makes it a popular choice for kitchen knives, where it can withstand exposure to moisture and other corrosive substances.

    Another advantage of using 9Cr18MoV steel in the knife industry is its toughness. Unlike some other high-carbon steels, 9Cr18MoV steel is less prone to chipping or cracking, making it a durable and long-lasting choice for knife makers. Additionally, its high carbon content provides excellent wear resistance, ensuring that the blade will maintain its sharpness and remain usable for many years to come.

    Comparison With Other Knife Steels

    9Cr18MoV steel is a popular choice for knife making, but it is not the only option. Other commonly used knife steels include 420HC, 440C, and AUS-8.

    420HC is a low-cost stainless steel that offers good edge retention and corrosion resistance, but it is not as hard as 9Cr18MoV steel. 440C is a high-carbon stainless steel that offers excellent edge retention and corrosion resistance, but it is more difficult to sharpen than 9Cr18MoV steel. AUS-8 is a Japanese-made steel that offers good toughness and corrosion resistance, but it is not as hard as 9Cr18MoV steel.

    When comparing these steels, it is important to consider the specific requirements of each application and choose the steel that offers the best balance of properties for that particular use. For example, 9Cr18MoV steel may be a better choice for a hunting knife, where a hard and durable edge is needed, while AUS-8 may be a better choice for a kitchen knife, where a tougher blade is desired.

    Applications of 9Cr18Mov Steel In Other Industries

    9Cr18MoV steel is not only limited to the knife making industry. It has also found applications in various other industries due to its high toughness, hardness, and corrosion resistance properties.

    In the automotive industry, 9Cr18MoV steel can be used to make gears, bearings, and other parts that require a high level of durability and strength. It is also used to make ball bearings, which must be able to withstand high levels of stress and friction.

    In the aerospace industry, 9Cr18MoV steel is used to make engine parts, structural components, and other parts that must be able to withstand high levels of stress and extreme temperatures.

    In the medical industry, 9Cr18MoV steel can be used to make surgical instruments, such as scalpels and scissors, which must be able to retain a sharp edge and resist corrosion.

    9Cr18MoV steel is also used in the construction industry to make various parts, such as nails and screws, that must be able to withstand harsh weather conditions and heavy loads.

    Frequently Asked Questions (FAQs)

    • Is 9Cr18MoV steel good for knives?

    Yes, 9Cr18MoV steel is excellent for knives due to its high hardness, sharpness retention, and corrosion resistance.

    • How does 9Cr18MoV compare to other steels?

    9Cr18MoV offers a superior balance of hardness and toughness compared to many other steels. It is often compared to VG-10 and 440C steel, with similar or better performance in edge retention and corrosion resistance.

    • Can 9Cr18MoV steel rust?

    While 9Cr18MoV steel has excellent corrosion resistance, it can still rust if not properly maintained. Regular cleaning and oiling are recommended to prevent rust.

  2. Download

    download the specification for 1.4117 Stainless Steel of ZEICIN

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