Alloy Steel
Alloy steel is an important engineering material which is widely used to manufacture various mechanical structures and engineering structures. It has always been a focus of research and improvement in the production of machinery and construction fields. In this article, we will introduce the types and classification of alloy steel.
Types of alloy steel
From a general perspective, alloy steel is classified into two broad categories: mechanical structure alloy steel and engineering structure alloy steel. The mechanical structure alloy steel is mainly used for the production of various mechanical parts of machinery or instruments. This type of alloy steel can be divided into two subcategories: common alloy steel and special alloy steel. Common alloy steel is a kind of alloy with relatively simple composition and relatively wide application. Special alloy steel is a kind of alloy with relatively complex composition and relatively limited application.
The engineering structure alloy steel is mainly used for the production of various machine structures and structural components. This type of alloy steel can also be divided into two subcategories: structural alloy steel and structural special alloy steel. Structural alloy steel is a kind of alloy with relatively simple composition and relatively wide application, and it is suitable for the production of various large machine structures, such as bridges, buildings and electric transmission poles. Structural special alloy steel is a kind of alloy with relatively complex composition and relatively limited application, and it is suitable for the production of various small machine structures and structural components, such as various pumps, valves, turbines and fan blades.
Classification of alloy steel
Alloy steel is classified according to its chemical composition and mechanical properties. According to its chemical components, it can be roughly divided into four types: carbon steel, low alloy steel, medium alloy steel, and high alloy steel.
Carbon steel refers to the alloy steel with carbon content less than 10%. This kind of alloy steel is characterized by low strength, good plasticity and toughness, easy to be processed and welded, and generally suitable for manufacturing parts without high strength requirements.
Low alloy steel refers to the alloy steel with carbon content between 10% and 15%. This kind of alloy steel has higher strength and higher plasticity and toughness than carbon steel, and is generally suitable for the production of parts requiring high strength but not high plasticity and toughness.
Medium alloy steel refers to the alloy steel with carbon content between 15% and 30%. This kind of alloy steel has better strength and plasticity and toughness than low alloy steel, and is generally suitable for parts with high strength and high plasticity and toughness requirements.
High alloy steel refers to the alloy steel with carbon content between 30% and 40%. This kind of alloy steel has better strength and higher plasticity and toughness than medium alloy steel, and is generally suitable for parts with very high strength, high plasticity and toughness requirements.
Conclusion
In summary, this article has introduced the types and classification of alloy steel. Alloy steel is an important engineering material, and its application structures are divided into two categories: mechanical structure alloy steel and engineering structure alloy steel. According to its chemical components, alloy steel can be roughly divided into four types: carbon steel, low alloy steel, medium alloy steel, and high alloy steel. This article also introduces the features and applications of each type of alloy steel.
