PEM Standard Self-Clinching Standoffs
PEM standard parts of rivet nut columns, nuts and screws are essential in daily life and in industrial production. The rivet screw studs and nut bolts are also called industrial rice. Standard parts have an important task in the industry. As long as there is the industry on the earth, the function of the fasteners is always important.
Standard materials for the processing of self-clinching standoffs are made of different materials according to the strength level of self-clinching standoffs. Currently, the standard parts on the market mainly include carbon steel, stainless steel, and copper. It is necessary to produce rivet screw nut column fasteners from carbon steel and stainless steel. The following small screw will give you a brief introduction to the carbon steel knowledge of fastener raw materials, We hope to help everyone.
Carbon steel is an iron-carbon alloy having a carbon content Wc of less than 2.11%. Also called carbon steel. It also generally contains small amounts of silicon, manganese, sulfur, and phosphorus. Generally, the higher the carbon content of carbon steel, the greater the hardness and the higher the strength, but the lower the plasticity.
(1) According to the application, carbon steel can be divided into three types: carbon structural steel, carbon tool steel, and free-cutting structural steel. Carbon structural steel is divided into engineering construction steel and machine-made structural steel;
(2) According to the smelting method, it can be divided into open hearth steel and converter steel;
(3) According to the deoxidation method, it can be divided into boiling steel (F), killed steel (Z), semi-killed steel (b) and special killed steel (TZ);
(4) According to the carbon content, carbon steel can be divided into low carbon steel (WC ≤ 0.25%), medium carbon steel (WC 0.25% - 0.6%) and high carbon steel (WC > 0.6%);
(5) According to the quality of steel, carbon steel can be divided into ordinary carbon steel (high in phosphorus and sulfur), high-quality carbon steel (low in phosphorus and sulfur) and high-quality steel (low in phosphorus and sulfur). ) and premium quality steel.
Carbon steel: We distinguish low carbon steel, medium carbon steel and high carbon steel and alloy steel with carbon content in carbon steel.
Low carbon steel C% ≤ 0.25% Domestically known as A3 steel. Foreign countries basically call 1008, 1015, 1018, 1022 and so on. It is mainly used for products with no hardness requirements such as 4.8 bolts and 4 grade nuts and small screws. (Note: The drill tail nail is mainly made of 1022 Material).
The results of the existing data query, the main differences between the chemical composition of 1006 and 1008 are:
a, carbon content C is inconsistent: 1006 contains C less than 0.08, 1008 is less than 0.10
b, the amount of manganese (Mn) is inconsistent: 1006 contains Mn less than 0.45, 1008 is less than 0.50
2. Medium carbon steel 0.25%
3. High carbon steel C%>0.45%. Currently, it is basically not used in the market.
4. Alloy steel: Adding alloying elements to ordinary carbon steel to increase some special properties of steel: such as 35, 40 chromium molybdenum, SCM435, 10B38.