Carbon Steel Plate
Carbon steel is an iron carbon alloy with carbon content ranging from 0.0218% to 2.11%. Al so known as carbon steel. It also contains small amounts of silicon, manganese, sulfur and phosphorus. The higher the carbon content of general carbon steel, the greater the hardness, the higher the strength, but the lower the plasticity. Classification： (1) According to the use of carbon steel can be divided into carbon structural steel, carbon tool steel and easy cutting structural steel three types, carbon structural steel is divided into engineering construction steel and machine manufacturing structural steel two; (2) According to the smelting method can be divided into open hearth steel, converter steel; (3) According to the deoxidation method can be divided into boiling steel (F), sedated steel (Z), semi-sedated steel (b) and special sedated steel (TZ); (4) according to carbon content can be divided into low carbon steel (WC 0.25% or less) to carbon steel, medium carbon steel (WC0.25%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 (higher phosphorus and sulfur content), high quality carbon steel (lower phosphorus and sulfur content) and high quality steel (lower phosphorus and sulfur content) and extra high quality steel.
Species： Carbon structural steel Brand: For example, Q235-A·F, σs=235MPa. Grade note :Q is yield strength A quality grade (ABCD Grade 4), F boiling steel. Features: Low price, process performance (such as weldability and cold formability) excellent. Application: general engineering structure and general mechanical parts. Such as Q235 can make bolts, nuts, dowel, hook and less important mechanical parts and building structure in the bar steel, steel, steel, etc. High quality carbon structural steel Brand: Example 45, 65Mn, 08F. Brand note: direct expression of metal carbon fraction. Application: Non-alloy steel used in the manufacture of important mechanical parts is generally used after heat treatment. Common steel numbers and uses: 08F, low mass fraction of carbon, good plasticity, low strength, used for stamping parts such as automotive and instrument enclosures; 20, good plasticity and weldability, for strength requirements are not high parts and carburized parts, such as hood, welding container, shaft, nut, washer and carburized gear; 45,40 Mn, good overall mechanical properties after conditioning, used for mechanical parts with large stress, such as gear, connecting rod, machine tool spindle, etc. 60, 65Mn steel has high strength; Used for manufacturing various springs, locomotive rim, low speed wheels.
Carbon tool steel： Grade: For example, T12 steel indicates Wc=1.2% carbon tool steel. Brand note :T plus metal carbon content thousand fraction. Features: eutectoid steel and eutectoid steel, high strength, hardness, good wear resistance for manufacturing a variety of low speed cutting tools. Common steel numbers and uses: T7, T8: Make parts that withstand certain impact and require toughness. Such as sledgehammer, punch, chisel, woodworking tools, scissors. T9, T10, T11: Manufacture tools with low impact and high hardness and wear resistance. Such as tap, small drill, die, hand saw. T12, T13: Make impact-proof tools. Such as file, scraper, razor, measuring tool. Cast steel： Grade: For example, ZG200-400 indicates cast steel with σs=200MPa and σb=400MPa. Properties: Casting property is worse than cast iron, but mechanical property is better than cast iron. Application: Mainly used in the manufacture of complex shape, high mechanical performance requirements, and in the process is difficult to use forging method forming more important mechanical parts, such as automobile gearbox housing, locomotive and vehicle coupler and coupling. |
