Introduction
The 12mm Mild Steel Plate is a low-carbon iron-carbon alloy with a carbon content of 0.15%–0.25%. As a medium-thickness plate, it strikes the ideal balance between rigidity and weight-stiffer than thin plates yet lighter than heavy plates-making it a versatile choice for structural and industrial applications.
| Tolerance | ±1% |
| Grade | Carbon Steel |
| Surface | Black/Galvanized/Color CoatedTechnique Hot Rolled |
| Surface Treatment | embossed |
| Standard | ASTM, DIN, JIS, BS, GB/T |
| Surface Treatment | Bared, Oiled, Black Painted (varnish coating), Galvanized, Checkered etc. |
| Thickness | 1.0mm-20.0mm, can be customized |
| Width | 1.5m or as required |
| Lenth | 6.0m or as required |
| Application | Construction sites, shipbuilding, bridges, factory floors, steps, trains, etc |
Core Technical Parameters
| common carbon steel grades | Q235B (GB Standard) 375 - 500 235 26 ≥27
A36 (ASTM Standard) 400 - 550 250 20 ≥20 (at 0℃) Q345B (GB Standard) 470 - 630 ≥ 345 21 ≥ 34 A572 Gr. 50 (ASTM Standard) 450 - 620 ≥ 345 18 27 (at -40℃) |
| Key chemical components (mass fraction, %) for Q235B/A36 grades | Carbon (C): ≤0.22%, Manganese (Mn): 0.30% - 1.60%, Silicon (Si): ≤0.55%, Phosphorus (P): ≤0.045%, Sulfur (S): ≤0.045%, Copper (Cu): ≥0.20% |
| Weight & Packaging Parameters (Logistics & Storage) |
Single Plate Weight: Calculated by density (7.85 g/cm³): 12mm×2000mm×6000mm: ~1130kg 12mm×1500mm×8000mm: ~1130kg Packaging: Indoor storage: Wooden pallets with steel straps (max 5 plates/pallet, ~5000kg/pallet). Sea shipping: Waterproof film + wooden crates (with moisture-proof desiccants) to prevent rust during long-distance transportation. |
| Thickness Tolerance | ±0.3mm (stricter than heavy plates' ±0.5mm) |
| Length Range | Standard lengths: 6000 mm, 8000 mm, and 10000 mm; custom lengths: 3000 mm - 12000 mm (supports cut-to-size to fit project blueprints). |
| Width Range | Standard widths: 1500 mm, 2000 mm, and 2200 mm; custom widths: 1000 mm - 3000 mm (max width up to 3200 mm for special orders). |
| Flatness | ≤2mm/m (measured via laser flatness gauge) |
| Diagonal Deviation | ≤3mm/m (for rectangular plates) |
Features
- Low-Carbon Steel Composition
Our low-carbon steel (≤0.25% C) offers excellent strength, ductility, and formability.
- Structural Strength
Carbon steel plates provide reliable strength for structural applications where durability and load-bearing capability are required.
- Excellent Weldability
Supports arc welding, MIG welding, or TIG welding (no preheating required for Q235B/A36 grades, reducing construction time).
- High Machinability
The material can be processed through bending, cutting, punching, and welding, supporting multiple fabrication processes.
FAQ
Q: How is the thickness and flatness of the 12mm steel plate inspected?
A: All 12 mm carbon steel plates undergo 100% thickness and flatness inspection before delivery. Each plate is checked to ensure that the dimensional accuracy and surface flatness meet the specified production requirements, helping guarantee consistent quality for fabrication and structural applications.
Q: Are mechanical properties tested before shipment?
A: Yes. For every production batch, random samples are selected for mechanical property testing, including tensile tests, impact tests, and bending tests. These inspections verify that the steel plates meet the required mechanical performance standards before shipment.
Q: How is the chemical composition of the steel plate verified?
The chemical composition is analyzed using spectrometry, which ensures the material meets the specified grade requirements. This process confirms that the steel plate contains the correct element proportions required for consistent performance.
Q: How to clarify the industry-standard thickness classification for carbon steel plates to confirm the category of 12 mm plates?
A: Thin Plate: 0.2mm - 4mm.
Medium Plate: 4 mm - 60mm (12mm falls into this range, ideal for applications requiring balanced strength and processability)
Heavy Plate: >60mm.
As a representative medium plate, a 12 mm carbon steel plate avoids the insufficient rigidity of thin plates and the excessive weight of heavy plates, making it a versatile choice for structural and industrial scenarios.
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