8 kinds of metal cutting blade materials commonly used by Chinese suppliers

Metal cutting blades are used with the fixed upper and lower blades on mechanical equipment. By using a reasonable blade gap, they apply shearing force to metal sheets of various thicknesses, causing the sheets to break and separate according to the required size. The commonly used materials for the 8 types of metal shear blades are 9CrSi, 6CrW2Si, Cr12MoV, H13 (4Cr5MoSiV1), LD (7Cr7Mo2V2Si), W6Mo5Cr4V2, T10A, and 45#.

1)9Crsi

Characteristics and application: 9CrSi is an excellent low-speed low-alloy tool steel. It has brittleness and hardness, as well as thermal sensitivity and a tendency to crack during surface quenching treatment. It is a commonly used low-alloy tool steel for measuring and cutting tools, with high hardenability and quenching hardness, as well as high tempering stability.

T This can be used to manufacture shear blades with complex shapes, small deformation, high wear resistance, and low-speed cutting. It is suitable for cutting materials such as ordinary A3, Q235, stainless steel, and aluminum alloys.

Blade hardness: HRC55-58.

Heat treatment specification: quenching temperature 820 °C ~ 860 °C, tempering temperature 180 °C ~ 200 °C.

2)6CrW2Si

Characteristics and application: 6CrW2Si is a great alloy tool steel. It is a type of steel that is formed by adding a certain amount of tungsten to the Cr and Si steel. Tungsten helps to maintain finer grains during quenching and results in higher toughness in the tempered state. 6CrW2Si steel has higher quenching hardness and certain high-temperature strength than 4CrW2Si steel and 5CrW2Si steel.

These blades are usually used to manufacture shear blades that can withstand impact loads and require high wear resistance. They are suitable for cutting various types of ordinary steel plates and harder stainless-steel plates, such as medium carbon steel, hard alloys, and other materials.

Blade hardness: HRC56 ~ 60.

Heat treatment specification: quenching temperature 860°C-900°C, tempering temperature 285°C-229°C.

3) Cr12MoV

Characteristics and application: Cr12MoV is an excellent die steel. Its quenching ability, hardness, strength, and toughness after quenching and tempering are higher than Cr12. It can be fully quenched for work with a diameter of 300-400mm or less and has minimal deformation during quenching. However, its high-temperature plasticity is poor.

Cr12MoV is often used to manufacture shear blades for cutting machines with large cross-sections, complex shapes, and heavy workloads. The shearing life can reach more than 800,000 times. It is suitable for cutting high-hardness plates such as stainless steel plates, Silicon steel sheets, and cold-work die steels.

Blade hardness: HRC56 ~ 60.

Heat treatment specification: quenching temperature 950 °C ~ 1000 °C, tempering temperature 200 °C ~ 250 °C.

4) H13(4Cr5MoSiV1)

Characteristics and application: H13 steel (4Cr5MoSiV1) is a type of air-hardening hot work die steel. It has high toughness and resistance to thermal fatigue, making it less prone to heat fatigue cracks. Additionally, it has strong anti-adhesion force and low interaction with molten metal, making it widely used in the manufacturing of shear blades for hot heading, hot extrusion, and hot shearing. Its properties and uses are basically the same as 4Cr5MoSiV steel, but due to its higher vanadium content, its performance at medium temperature (600 ° C) is better than 4Cr5MoSiV steel, making it a representative steel grade with a wide range of applications in hot work die steel.

This is for cutting steel plates with a temperature below 800°C, such as high-strength steel and hot-work mold steel.

Blade hardness: HRC 56 ~ 58.

Heat treatment specification: quenching temperature 1050 °C-1080 °C, tempering temperature 530 °C-560 °C.

5) LD (7Cr7Mo2V2Si)

Characteristics and application: LD (7Cr7Mo2V2Si) is a type of high-strength and tough cold work mold steel. Based on production experience, LD steel is used to make cold heading, cold extrusion, and cold punching molds with high toughness requirements. LD steel has better performance than Cr12 and W6Mo5Cr4V2. It belongs to the matrix steel type of cold work mold steel, with high strength, toughness, and wear resistance, high bending strength, excellent cold and hot processing technology, small heat treatment distortion, strong versatility, higher strength and toughness, and good wear resistance.

This can be used to manufacture various cold shearing machine blades, such as high-speed cutting steel, high-speed steel, and other materials. It is suitable for cold cutting of steel plates of various hardness, and its service life is several times or even more than ten times higher than that of Cr12MoV, W18Cr4V, W6Mo5Cr4V2, Cr12, Gr15, 9CrSi.

Blade hardness: HRC 57 ~ 63.

Heat treatment specification: quenching temperature 1100 °C ~ 1150 °C, tempering temperature 530 °C ~ 540 °C.

6) W6MO5CR4V2

Characteristics and application: W6Mo5Cr4V2 is a type of excellent high-speed tool steel, also known as W6 or 6542, commonly referred to as “sharp steel”. It is a high-carbon and high-alloy tool steel suitable for high-speed cutting and is a representative steel grade of the W and Mo series of general-purpose high-speed steels. Its outstanding features are high hardness, wear resistance, and thermal hardness (also known as red hardness). Even when the temperature of the cutting tool reaches around 500°C to 600°C, the hardness does not decrease significantly. Its red hardness and high-temperature hardness are equivalent to W18Cr4V, but it is prone to oxidation and decarburization, so attention should be paid during hot processing and heat treatment.

W6Mo5Cr4V2 can cut at a higher speed than low-alloy tool steel and is mainly used to manufacture shear blades for high cutting speed, heavy load, and high working temperature. It is suitable for cutting various types of plates, such as high-speed steel, high-temperature alloys, and other materials.

Blade hardness: HRC 62 ~ 68.

Heat treatment specification: quenching temperature 1210 °C ~ 1230 °C, tempering temperature 540 °C ~ 560 °C.

7) T10A

Characteristics and application: T10A is a great steel for carbon steel, with high strength and wear resistance. However, it has low thermal hardness, low hardenability, and significant deformation during quenching.

It is suitable for manufacturing shear blades that require high wear resistance and can withstand sudden and severe vibrations. The shear blades also need to have a certain toughness and sharp cutting edge. They are suitable for cutting ordinary A3 sheet metal.

Blade hardness: HRC52-55.

Heat treatment specification: quenching temperature 780 °C ~ 820 °C, tempering temperature 150 °C ~ 250 °C.

8)45 #

Characteristics and application: 45 # is a great carbon steel widely used in mechanical manufacturing. It’s easy to machine and has good mechanical properties. However, as a type of medium carbon steel, it’s not great for making shear blades. The hardenability of 45 # steel is not good, and the heat treatment hardness is only hrc42 ~ 46. Therefore, the usual practice is to use quenching and tempering with high-frequency surface hardening technology, but the wear resistance is not good.

Suitable for non-metallic, low-carbon steel, aluminum alloy plate shear.

Blade hardness: HRC42 ~ 46.

Heat treatment specification: quenching temperature 820 °C ~ 860 °C, tempering temperature 150 °C ~ 250 °C.

These are the 8 commonly used materials by Chinese suppliers when manufacturing cutting blades. These metal cutting blade materials have different hardness, wear resistance, and corrosion resistance properties. You need to choose the appropriate material according to different metal materials and cutting requirements. When purchasing these blades, you need to inform the supplier of your needs and let them give you professional advice.