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mild Steel Sheet
Mild Steel Sheet (Low Carbon Steel Sheet)
Mild steel sheet, also known as low-carbon or plain-carbon steel, contains a low carbon content—typically between 0.05% and 0.30%—which makes it soft, ductile, and easy to form, weld, and machine. It offers excellent cost-effectiveness and is widely used across various industries.
Specifications of Cold Rolled Steel Sheets & Coils
| Item | Typical Range / Specification |
|---|---|
| Carbon Content | 0.05% – 0.30% (Low carbon steel) |
| Thickness (Common) | From 10 ga (~3.40 mm) to 20 ga (~0.91 mm), custom range: 0.5 mm – 6 mm |
| Standard Sizes | Sheets: 1200 × 2400 mm, 2000 × 3000 mm; Coil width up to 1850 mm |
| Production Methods | Hot Rolled (HR), Cold Rolled (CR) |
| Surface Conditions | Mill finish, Pickled & Phosphated, Bright (CR), Galvanized, Oiled |
| Mechanical Properties | Hot Rolled: Yield Strength 195–290 MPa, Tensile Strength 310–380 MPa |
| Cold Rolled: Yield Strength 170–275 MPa, Tensile Strength 240–345 MPa, Elongation 20–45% | |
| Hardness | Rockwell B40–60 (CR), Brinell ~140 (HR) |
| Density | Approx. 7.85 g/cm³ |
| Common Grades | ASTM A36, A1011, SAE 1008/1018, EN1A, S275JR, etc. |
| Weight Calculation | Weight (kg/m²) = Thickness (mm) × 7.85 |
| e.g. 4 mm sheet ≈ 31.4 kg/m² | |
| Workability | Excellent formability and weldability; suitable for bending, punching, welding, machining, etc. Rust protection recommended. |
Quality Certification
Application of Low-Carbon Steel
Construction: Used for beams, frames, brackets, and reinforcing components in buildings and structures.
Automotive: Used in body panels, brackets, chassis parts, and exhaust systems because of its formability.
Infrastructure: Perfect for bridges, guardrails, street furniture, and support structures that need durability.
Oil & Gas: Used in piping supports, platforms, non-critical structural parts, and enclosures.
Heavy Equipment: Used in enclosures, frames, machine housings, and wear-resistant components.
Household: Commonly used in the structural frames of furniture and electrical appliances.
More Details About Zhaojian Steel Products
Key Features
Excellent Performance
Strict control of carbon content and impurities ensures good plasticity and toughness of mild steel sheets.
Reliable Quality
Equipped with advanced rolling and inspection equipment to guarantee uniform thickness and defect-free surface.
Flexible Customization
Supports various sizes and performance customizations, ensuring consistent quality and timely delivery.
Mild Steel Manufacturing Process
- Steelmaking: Iron ore or scrap steel is melted in a Basic Oxygen Furnace (BOF) or Electric Arc Furnace (EAF). The carbon content is carefully reduced to 0.05%–0.30%.
- Continuous Casting: The molten steel is cast into slabs or billets for rolling.
- Hot Rolling: Slabs are reheated and rolled at high temperatures to form hot-rolled sheets or coils.
- Pickling (optional): Acid cleaning removes surface scale to prepare for cold rolling.
- Cold Rolling (if needed): Sheets are further rolled at room temperature to improve surface finish and dimensional accuracy.
- Annealing & Finishing: Heat treatment improves ductility. Sheets can be oiled, galvanized, or coated to prevent corrosion.
- Cutting & Inspection: Final products are cut to size and inspected for flatness, thickness, and surface quality.
FAQ
Yes. Mild steel is one of the easiest types of steel to weld, cut, drill, and bend, which makes it widely used in fabrication and manufacturing.
Yes, mild steel is prone to rust if left untreated. It is often coated (e.g., galvanized, painted, or oiled) to enhance corrosion resistance, depending on the environment.
Generally, our delivery time is between 15 to 45 days. For large-volume orders or special requests, the lead time might be longer.
