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Low Carbon Steel Coil
Construction Engineering: Used for manufacturing beams and columns of steel structure workshops, floor bearing plates, building guardrails, etc.
Machinery Manufacturing: Producing parts such as bases, brackets and casings of general machinery
Home Appliance Industry: Making casings, inner tanks and structural parts of refrigerators, washing machines and other home appliances
Automotive Manufacturing: Processing auxiliary structures of automobile chassis, carriage plates, door frames, etc.
Hardware Products: Producing daily industrial and civil products such as shelves, pipe supports and kitchenware
Packaging Industry: Manufacturing cold-rolled thin steel plates for food packaging, hardware packaging, etc.
2.Product Advantages
Excellent Processing Performance: Easy to perform cold/hot processing such as stamping, bending, shearing and welding, not easy to crack after forming, suitable for processing complex components
Good Weldability: No complicated pre-welding preheating or post-welding heat treatment is required, the weld strength has a high matching degree with the base metal, and it is suitable for various welding methods
High Cost-Effectiveness: Raw materials are easily available, the production process is mature, and the price is lower than that of alloy steel, effectively controlling procurement costs
Good Toughness and Plasticity: It has good low-temperature toughness, is not easy to brittle fracture, and can meet different forming needs
Strong Versatility: Balanced performance, suitable for multiple industries such as construction, machinery and home appliances, with a wide range of applications
Excellent Surface Quality: The surface is flat and smooth after cold rolling or hot rolling, and can be directly subjected to subsequent surface treatment (such as painting, galvanizing).
3.Technical Parameters
Parameter | Specification Range | Standard/Notes |
Steel Grade | Q195, Q215, Q235; ASTM A36 | GB/T 700 / ASTM |
Thickness | 0.12 - 3.0 mm | ±0.02 mm Tolerance |
Width | 800 - 1500 mm | ±2 mm Tolerance |
Coil Weight | 3 - 25 tons | Max. Outer Diameter: 2000 mm |
Surface Treatment | Hot Rolled, Cold Rolled, Galvanized | Customizable |
Tensile Strength | 370 - 500 MPa | GB/T 228.1 |
Yield Strength | ≥235 MPa | GB/T 228.1 |
Elongation | ≥25% | GB/T 228.1 |
4.Production process
Raw Material Smelting: Melt molten iron/scrap steel in converter, precisely control carbon content (≤0.25%), and cast into steel billets
5.FAQ
Q1:Is low carbon steel coil prone to rust? How to prevent rust?
A1:Low carbon steel contains few rust-resistant alloy elements and is prone to rust in humid and salt-spray-rich environments. Rust prevention measures: 1. Apply anti-rust oil on the surface; 2. Perform surface treatments such as painting and galvanizing; 3. Keep the storage environment dry and ventilated, and avoid contact with corrosive substances.
Q2:What should be noted in the welding of low carbon steel coil?
A2:1. Clean impurities such as oil stains, rust and scale on the weld surface before welding; 2. E43 series welding rods or ER50 series welding wires can be selected; 3. Pre-welding preheating is not required (except for thick plates), and welding slag should be cleaned in time after welding; 4. For components with high precision requirements, straightening treatment is required after welding to avoid deformation.
Q3:Can low carbon steel coil be used in low-temperature environments?
A3:Ordinary low carbon steel coil is recommended to be used in environments above -20℃, as its toughness decreases and it is prone to brittle fracture in low-temperature environments. If it needs to be used at lower temperatures (such as -40℃), special low-temperature low-carbon steel (such as Q235D, A36 low-temperature grade) should be selected, which has stricter control of phosphorus and sulfur content and better low-temperature toughness.
Q4:What are the differences between hot-rolled and cold-rolled low carbon steel coils, and how to choose?
A4:Differences: Hot-rolled steel coils are thicker (usually ≥1.5mm), have scale on the surface, low cost, and are suitable for structural parts with low surface requirements; cold-rolled steel coils are thinner (usually ≤3.0mm), have a flat and smooth surface, high dimensional accuracy, and are suitable for scenes with high surface and precision requirements such as home appliance casings and automotive interior parts. Selection: Comprehensive judgment based on product thickness, surface quality, precision requirements and cost budget.
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