Is pure carbon steel strong (m815 carbon steel bolts)

Classification of steel 1. The steel we use in life can be divided into two categories: carbon steel and alloy steel according to its chemical composition. Carbon steel refers to an iron-carbon alloy with a carbon content of 0.0218%-2.11%. Alloy steel refers to an iron-based alloy obtained by adding a certain amount of alloying elements on the basis of carbon steel in order to improve the performance of steel. The new classification method of steel The general classification of steel: Structural steel: 1. Engineering steel Building, bridge, ship, vehicle 2. Machine steel Carburizing steel, quenched and tempered steel, spring steel, rolling bearing steel, wear-resistant steel Tool steel: Cutting tool steel, die steel, measuring tool steel Special performance steel: stainless steel, heat-resistant steel 2. Classification by chemical composition Carbon steel: low carbon steel 0.25%C, medium carbon steel 0.25~0.6%C, high carbon steel 0.6%C alloy Steel: The total amount of alloying elements in low alloy steel is 5%, the total amount of alloying elements in medium alloy steel is 5~10%, and the total amount of alloying elements in high alloy steel is 10%. Third, the quality of steel is divided by the content of phosphorus and sulfur of. Divided into ordinary quality steel, high-quality steel, high-grade high-quality steel and special-grade high-quality steel; according to the current standard

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