Tooth blade is a mechanical knife used for sharpening pencils. The vast majority of mechanical parts are made of carbon and alloy structural steel, and ribbon chips are formed when turning such materials.

High hardness and wear resistance.
Hardness is the basic characteristic of tooth blade material. In order to cut the chip from the workpiece, the hardness of the tooth blade must be higher than that of the workpiece material. The chip hardness of the tooth blade used for chip metal is generally higher than 60hrc. Wear resistance is the ability of a material to resist wear. Generally speaking, the hardness of the tooth blade material is higher. The better its wear resistance. The higher the hardness of the hard spots in the tissue, the more the number, the smaller the particles, and the more uniform the distribution, the better the wear resistance. Wear resistance is also related to the chemical composition, strength, microstructure and the temperature of the friction zone. The formula can be used to express the wear resistance of materials in wr;we=kico.5e-0.8h1.43 formula, the higher the hardness, the better the wear resistance.
Adequate strength and toughness.
In order to make the tooth blade bear great pressure and work under the conditions of impact and vibration that often occur in the cutting process without edge collapse and fracture, the mechanical blade material must have sufficient strength and toughness.
High heat resistance.
Heat resistance is the main symbol to measure the cutting performance of tooth blade materials. It refers to the properties of tooth-shaped blade materials that maintain I-agreed hardness, wear resistance, strength and toughness at high temperature. The tooth blade material should also have the ability of oxidation resistance at high temperature and good anti-adhesion and anti-diffusion ability, that is, the sanitary material should have good chemical stability.
Good thermophysical properties and thermal shock resistance.

The better the thermal conductivity of the tooth blade material is, the easier the cutting heat is to dissipate from the cutting zone, which is beneficial to reduce the cutting temperature.