| Quantity: | |
|---|---|
C: 0.32-0.39
Si: 0.10-0.40
Mn: 0.50-0.80
P: ≤0.025
S：0.020-0.040
Cr：≤0.4
Ni：≤0.4
Mo：≤0.1
Cu: ≤0.3
Cr+Mo+Ni: ≤0.63
Tensile strength σb: ≥530 MPa
Yield strength σs: ≥315 MPa
Elongation δ5: ≥20%
Impact energy Akv: ≥55 J
Impact toughness value αkv: ≥69 J/cm²
Hardness: Unheat treated ≤197HB
Density: 7.85 g/cm³
Normalizing: 870℃
Quenching: 850℃
Tempering: 600℃
Carbon steel, with its rich history and proven track record, continues to be a dominant force in the industrial landscape. Its unique combination of properties makes it an essential material for countless products and applications. As technology advances, new manufacturing techniques and heat - treatment processes are further enhancing the capabilities of carbon steel, allowing it to meet the evolving demands of modern industries. Despite the emergence of more complex alloys, carbon steel remains a reliable and versatile choice, offering a solid foundation for a wide range of engineering solutions.
1. Customizable Properties: The properties of carbon steel can be precisely customized through heat - treatment methods such as annealing, quenching, and tempering. Annealing softens the steel, improves its ductility, and relieves internal stresses, making it easier to work with. Quenching, on the other hand, rapidly cools the heated steel, increasing its hardness and strength. Tempering is then often performed after quenching to reduce brittleness and restore some ductility. By carefully controlling these heat - treatment processes, manufacturers can tailor the carbon steel's properties to suit specific application requirements, whether it's for high - strength structural components or ductile parts that need to be formed into complex shapes.
2. Corrosion Resistance (with Treatment): While carbon steel is generally susceptible to corrosion, especially in the presence of moisture and oxygen, various surface treatment methods can significantly enhance its corrosion resistance. Galvanization, which involves coating the steel with a layer of zinc, provides excellent protection against rust. Other treatments such as painting, powder coating, and applying anti - corrosion coatings can also extend the lifespan of carbon steel components, making them suitable for outdoor and harsh - environment applications.
3. Impact Resistance: Medium - and low - carbon steels exhibit good impact resistance, meaning they can withstand sudden forces and shocks without breaking. This property is crucial in applications where components may be subjected to dynamic loads, such as in the construction of heavy - duty machinery, railway tracks, and automotive suspension systems. The ability to absorb energy during impact helps prevent catastrophic failures and ensures the safety and reliability of the overall structure or product.
4. Ease of Recycling: Carbon steel is highly recyclable, which is an important factor in today's environmentally conscious world. Recycling steel not only conserves natural resources but also reduces energy consumption compared to producing new steel from raw materials. When carbon steel products reach the end of their useful life, they can be melted down and reused to create new steel products without significant loss of quality, making it a sustainable material choice.
1. Energy Sector: In the energy industry, carbon steel is used in various applications. For oil and gas pipelines, low - carbon steel with high strength and good weldability is preferred to transport fluids over long distances. The pipes need to withstand high pressures and resist corrosion, and with proper surface treatments, carbon steel can meet these requirements effectively. In power generation, carbon steel is used for boiler tubes, turbine components, and structural supports in power plants. Its ability to withstand high temperatures and mechanical stresses makes it suitable for these demanding applications.
2. Agricultural Equipment: The agricultural sector relies on carbon steel for the production of machinery and equipment. Tractors, plows, harvesters, and other farming tools are often made from carbon steel due to its strength, durability, and affordability. The components need to withstand the rigors of working in the field, including exposure to soil, moisture, and heavy loads. The good machinability of carbon steel also allows for the production of complex parts with precise dimensions, ensuring the efficient operation of agricultural equipment.
3. Consumer Goods: Carbon steel is also found in many consumer goods. From kitchen utensils like knives and forks to furniture frames and hardware, carbon steel offers the right combination of strength, durability, and cost - effectiveness. The ability to shape and finish carbon steel to create aesthetically pleasing products makes it a popular choice in the consumer goods industry.
C: 0.32-0.39
Si: 0.10-0.40
Mn: 0.50-0.80
P: ≤0.025
S：0.020-0.040
Cr：≤0.4
Ni：≤0.4
Mo：≤0.1
Cu: ≤0.3
Cr+Mo+Ni: ≤0.63
Tensile strength σb: ≥530 MPa
Yield strength σs: ≥315 MPa
Elongation δ5: ≥20%
Impact energy Akv: ≥55 J
Impact toughness value αkv: ≥69 J/cm²
Hardness: Unheat treated ≤197HB
Density: 7.85 g/cm³
Normalizing: 870℃
Quenching: 850℃
Tempering: 600℃
Carbon steel, with its rich history and proven track record, continues to be a dominant force in the industrial landscape. Its unique combination of properties makes it an essential material for countless products and applications. As technology advances, new manufacturing techniques and heat - treatment processes are further enhancing the capabilities of carbon steel, allowing it to meet the evolving demands of modern industries. Despite the emergence of more complex alloys, carbon steel remains a reliable and versatile choice, offering a solid foundation for a wide range of engineering solutions.
1. Customizable Properties: The properties of carbon steel can be precisely customized through heat - treatment methods such as annealing, quenching, and tempering. Annealing softens the steel, improves its ductility, and relieves internal stresses, making it easier to work with. Quenching, on the other hand, rapidly cools the heated steel, increasing its hardness and strength. Tempering is then often performed after quenching to reduce brittleness and restore some ductility. By carefully controlling these heat - treatment processes, manufacturers can tailor the carbon steel's properties to suit specific application requirements, whether it's for high - strength structural components or ductile parts that need to be formed into complex shapes.
2. Corrosion Resistance (with Treatment): While carbon steel is generally susceptible to corrosion, especially in the presence of moisture and oxygen, various surface treatment methods can significantly enhance its corrosion resistance. Galvanization, which involves coating the steel with a layer of zinc, provides excellent protection against rust. Other treatments such as painting, powder coating, and applying anti - corrosion coatings can also extend the lifespan of carbon steel components, making them suitable for outdoor and harsh - environment applications.
3. Impact Resistance: Medium - and low - carbon steels exhibit good impact resistance, meaning they can withstand sudden forces and shocks without breaking. This property is crucial in applications where components may be subjected to dynamic loads, such as in the construction of heavy - duty machinery, railway tracks, and automotive suspension systems. The ability to absorb energy during impact helps prevent catastrophic failures and ensures the safety and reliability of the overall structure or product.
4. Ease of Recycling: Carbon steel is highly recyclable, which is an important factor in today's environmentally conscious world. Recycling steel not only conserves natural resources but also reduces energy consumption compared to producing new steel from raw materials. When carbon steel products reach the end of their useful life, they can be melted down and reused to create new steel products without significant loss of quality, making it a sustainable material choice.
1. Energy Sector: In the energy industry, carbon steel is used in various applications. For oil and gas pipelines, low - carbon steel with high strength and good weldability is preferred to transport fluids over long distances. The pipes need to withstand high pressures and resist corrosion, and with proper surface treatments, carbon steel can meet these requirements effectively. In power generation, carbon steel is used for boiler tubes, turbine components, and structural supports in power plants. Its ability to withstand high temperatures and mechanical stresses makes it suitable for these demanding applications.
2. Agricultural Equipment: The agricultural sector relies on carbon steel for the production of machinery and equipment. Tractors, plows, harvesters, and other farming tools are often made from carbon steel due to its strength, durability, and affordability. The components need to withstand the rigors of working in the field, including exposure to soil, moisture, and heavy loads. The good machinability of carbon steel also allows for the production of complex parts with precise dimensions, ensuring the efficient operation of agricultural equipment.
3. Consumer Goods: Carbon steel is also found in many consumer goods. From kitchen utensils like knives and forks to furniture frames and hardware, carbon steel offers the right combination of strength, durability, and cost - effectiveness. The ability to shape and finish carbon steel to create aesthetically pleasing products makes it a popular choice in the consumer goods industry.
