Bullets are a common product in Metal Stamping factories, and commonly used materials include stainless steel, bronze, and other materials. However, due to the different materials used, bullet pieces have different properties. Next, EMAR Precision will introduce the characteristics of different materials used in bullet pieces.

Stainless steel shrapnel can undergo significant elastic deformation under load, and mechanical or kinetic energy can be converted into deformation energy. After unloading, the deformation disappears and returns to its original state, converting deformation energy into mechanical or kinetic energy. Such shrapnel has high elastic limit, fatigue limit, impact toughness, as well as good temperature resistance and corrosion resistance.

Metal Dome

After heat treatment and cold tensile hardening, the shrapnel made of 65mn elastic steel will have high strength, toughness, and plasticity. Can be used for wear-resistant mechanical parts.

Choosing 70 # steel is relatively cheap and easy to source, but it has the disadvantage of losing elasticity after repeated deformation, and cannot work properly at 130 ℃. Due to its cheap price advantage, manufacturers often use it as a raw material for spring plates.

Bronze has the characteristics of low melting point, high rigidity, strong formability, wear resistance, corrosion resistance, and bright color. It has excellent resilience and can be compressed up to 70% of its height. It can withstand 100000 times without deformation; High compressive strength, capable of bi-directional repeated compression; Fatigue resistance; Easy to electroplate and weld; Excellent conductivity; Ultra low permeability. Bronze shrapnel is often used as a shielding material for electronic devices.

Bronze shrapnel

When selecting materials for shrapnel, it is important to consider factors such as usage, importance, load properties, size, cycling characteristics, working temperature, surrounding media, as well as processing, heat treatment, economy, etc., in order to achieve twice the result with half the effort.