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Low Carbon Steel Plate
1. Product Overview
Low carbon steel plate, also known as mild steel plate, is a ferrous metal material with carbon content typically below 0.25%. Characterized by excellent weldability, good formability, and relatively low cost, it serves as one of the most fundamental and widely used materials in various industries. Its balanced mechanical properties make it suitable for structural applications, machinery manufacturing, and general fabrication where high strength is not the primary requirement.
2. Key Features
(1)Excellent Weldability and Formability
The low carbon content significantly reduces the risk of cracking during welding, allowing for easy joining using all stadard welding methods. It also exhibits good ductility, enabling bending, stamping, and deep drawing without material failure, making it ideal for complex fabrications.
(2)Cost-Effective and Readily Available
As one of the most commonly produced steel products, low carbon steel plate offers outstanding cost
performance. Its widespread availability ensures short lead times and stable supply, making it the most economical choice for many industrial and construction projects.
(3)Good Machinability and Surface Treatment
Low carbon steel can be easily machined using conventional methods like drilling, milling, and turning. It accepts various surface treatments including painting, galvanizing, and powder coating, providing both corrosion protection and enhanced appearance.
(4)Reliable Strength and Impact Resistance
While not as strong as high-strength steels, it provides adequate mechanical properties for most general applications. It maintains good toughness at room temperature and offers reliable performance under static and dynamic loading conditions.
3. Technical Parameters of Low Carbon Steel Plate
Parameter | Specification Range | Standard / Notes |
Steel Grade | Q235, Q255, A36, SS400, ST37 | GB/T 700, ASTM A36, JIS G3101 |
Carbon Content | 0.04% - 0.25% | Chemical Analysis |
Thickness | 0.5mm - 200mm | Custom thickness available |
Width | 1000mm - 3000mm | Standard or custom widths |
Length | 2000mm - 12000mm | Custom lengths available |
Tensile Strength | 370 MPa - 500 MPa | ASTM A370 |
Yield Strength | 235 MPa - 275 MPa | ASTM A370 |
Elongation | 20% - 35% | ASTM A370 |
Hardness | 110 HB - 150 HB | Brinell Hardness |
Density | 7.85 g/cm³ | - |
Melting Point | 1420°C - 1530°C | Depends on composition |
Modulus of Elasticity | 190 - 210 GPa | - |
Surface Finish | Hot rolled, Cold rolled, Pickled and oiled | - |
Flatness Tolerance | ±3mm/m to ±8mm/m | Depends on thickness |
Thickness Tolerance | ±0.05mm to ±1.5mm | Depends on thickness range |
4. Application Scenarios
(1)Structural and Construction Applications
Widely used in building frames, support structures, and base plates where weldability and formability are crucial. Its reliable performance and cost-effectiveness make it the preferred choice for commercial and industrial construction projects.
(2)Machinery and Equipment Manufacturing
Ideal for machine frames, guards, brackets, and non-critical components. The good machinability allows for precise fabrication of mechanical parts while maintaining structural integrity at reasonable cost.
(3)Automotive and Transportation Industry
Used for vehicle frames, chassis components, and truck bodies where a balance of strength, formability, and cost is required. The material's consistency and reliability ensure safety and durability in transportation applications.
5. FAQ
Q1: What is the main difference between low carbon steel and medium carbon steel?
A1: Low carbon steel (C<0.25%) offers better weldability and formability, while medium carbon steel (C 0.25-0.60%) provides higher strength and hardness but requires preheating for welding.
Q2: How to prevent low carbon steel from rusting?
A2: Apply protective coatings like paint, galvanizing, or powder coating. For temporary protection, use anti-rust oils or VCI packaging. Proper storage in dry conditions also prevents corrosion.
Q3: What is the maximum service temperature?
A3: Generally, low carbon steel can be used continuously up to 450°C. Above this temperature, mechanical properties begin to degrade significantly, and scaling becomes a concern.
Q4: Can it be heat treated for higher strength?
A4: Low carbon steel responds poorly to conventional heat treatment. For increased strength, consider cold working or selecting higher carbon/high-strength low-alloy steels instead.
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