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CNC Machining Tool Steel Service

Tool steel is known for its high hardness, high wear resistance and good toughness. DEK has more than 20 years of rich experience in CNC machining and can provide comprehensive CNC machining tool steel services. We have high-precision machining centers and advanced technology to achieve tight tolerances of +/- 0.005mm and short lead time.

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High Quality CNC Machining Tool Steel for Custom Parts


Tool steel has high hardness, good toughness, wear resistance and corrosion resistance. It is a special steel used for CNC machining to make tools and molds.

DEK's machine shop uses advanced CNC machine tools and EDM equipment to produce custom tool steel parts, including high-precision lathes, milling machines, grinders and wire cutting equipment. These equipment and advanced technologies allow us to process various complex shapes and high-precision custom parts. We specialize in processing all types of tool steel, including A2, A3, D2, H13, O1 and S7.

DEK is a professional and skilled tool steel processing parts manufacturer. Our high-precision services ensure high-quality parts for industries such as manufacturing, automotive and aerospace. It is a perfect choice for various tools, bearings, mold parts, gears, engine parts, turbine blades. We can provide a variety of surface treatment services such as heat treatment, nitriding, chrome plating and oxidation to enhance the surface hardness and wear resistance of tool steel to meet the processing needs of different parts. From prototype to mass production, we provide you with high-quality custom tool steel custom parts

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Tool Steel Material List

Tool Steel A2

Tool steel A2 is an air-hardening, cold-work tool steel commonly used in CNC machining due to its excellent wear resistance and toughness.

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Tool Steel A3

Tool Steel A3, also known as AISI A3 or W1-A-1, is a high-carbon, high-alloy steel with excellent wear resistance and toughness.

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Tool Steel D2

Tool steel D2 is a high-carbon, high-chromium, air-hardening steel with excellent wear resistance, high compressive strength, and good toughness.

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Tool Steel H13

Tool steel H13 is widely used in CNC machining due to its excellent hardness, heat resistance, and toughness.

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Tool Steel O1

Tool steel O1 is an oil-hardening, non-deforming tool steel that belongs to the cold work tool steel group. It has high wear resistance, good dimensional stability, toughness, and machinability.

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Tool Steel S7

Tool Steel S7, known for its shock-resistant properties. It has high impact strength, wear resistance, and toughness.

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Basic Knowledge of Tool Steel

What is Tool Steel?

Tool steel is a type of steel used for making tools like cutting tools, dies, hand tools, and knives. These steels are chosen for their hardness, resistance to wear, and ability to maintain a sharp edge at high temperatures. Tool steels, with a carbon content between 0.5% and 1.5%, are carefully manufactured with alloying elements such as tungsten, chromium, vanadium, and molybdenum to form carbides. The rate of carbide dissolution in iron's austenite phase affects the steel's high-temperature performance.

Proper heat treatment is important to enhance properties like hardness and toughness. There are six groups of tool steels: cold-work, high-speed, hot-work, shock-resistant, water-hardening, and special purpose. They are chosen based on cost, working temperature, hardness, strength, shock resistance, and toughness. Tool steels are very important for cutting, pressing, extruding, and coining metals.

Advantages of Tool Steel

High hardness

Wear resistance


Heat resistance

Corrosion resistance


Applications of Tool Steel

Injection molds

Cutting tools

Cold forming tools

Extrusion dies

Stamping dies

Shear blades

Thread rolling dies

Punches and chisels

Gear cutters

Lathe tools


Machining Tool Steel Buying FAQ

Steel is a generic term for a metal alloy primarily composed of iron and carbon, while tool steel is a specific type of steel designed for making cutting tools, molds, and other applications requiring high hardness, wear resistance, and toughness. Tool steel often contains additional alloying elements like chromium, vanadium, or tungsten.
M2 tool steel is a popular high-speed steel for high-speed cutting tools because of its ability to maintain hardness at high temperatures and its excellent wear resistance, while D2 is a cold work steel that is ideal for applications that require high wear resistance and moderate toughness, such as molds and punches, because of its high hardness and some corrosion resistance.
There are six groups of tool steels: water-hardening, cold-work, shock-resistant, high-speed, hot-work, and special purpose. The choice of group to select depends on cost, shock resistance, strength, working temperature, required surface hardness, and toughness requirements.
Popular for its excellent wear resistance, high hardness (due to its high carbon and chromium content), outstanding edge retention and moderate corrosion resistance, D2 steel is an ideal material for a variety of industrial applications such as dies, punches and blades. Its versatility and cost-effectiveness further enhance its appeal, providing a reliable and efficient material choice for a variety of tooling needs.

Other Materials


Stainless Steel

Stainless steel is durable, corrosion-resistant, and visually appealing. It's widely used because of its strength, low maintenance, and ability to withstand various temperatures and chemicals.

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Mild Steel

Forging, welding, and machining mild steel are some of DEK’s expertise. Because of mild steel’s high malleability and ductility, it can be easily formed, bent, and stretched without breaking.

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Alloy Steel

Powerful than carbon steel, more wear-resistant, more tear-resistant. Alloy steel is durable and can withstand high-temperature environments.

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