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Corten Sheet Price
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Corten steel sheet price is not fixed and is calculated based on several key factors, including:
- Base material cost (weathering steel grade)
- Thickness of the sheet
- Sheet size and weight
- Processing requirements (cutting, bending, laser cutting)
- Surface condition (mill finish or pre-rusted)
- Quantity and order volume
- Transportation and packaging costs
Because corten steel is a low-alloy weathering steel, its price is generally higher than standard carbon steel but lower than many high-end stainless steels.
Corten Sheet Price Calculation Formula
The most common pricing method in steel supply is based on weight (kg) or tonnage (ton).
Basic Formula:
Total Price = Weight × Unit Price per kg + Processing Cost + Additional Fees
1. Weight Calculation Formula
Steel Sheet Weight Formula:
Weight (kg) = Thickness (mm) × Width (m) × Length (m) × 7.85
Where:
- 7.85 = steel density (g/cm³ converted constant)
- Thickness is in millimeters
- Width and length are in meters
Example:
For a 3mm × 1.22m × 2.44m sheet:
Weight = 3 × 1.22 × 2.44 × 7.85
Weight ≈ 70.3 kg
2. Basic Price Formula
Material Cost:
Material Cost = Weight × Unit Price (per kg)
Full Cost Formula:
Total Corten Sheet Price = (Thickness × Width × Length × 7.85 × Unit Price/kg) + Processing Fee + Surface Treatment Fee + Transport Cost
3. Processing Cost Factors
Additional costs may include:
- CNC laser cutting
- Perforation or pattern design
- Bending and folding
- Welding and assembly
- Pre-rusting treatment
- Protective coating
Each processing step increases the final price.
4. Surface Condition Impact on Price
| Surface Type | Price Impact |
|---|---|
| Mill finish (raw steel) | Lowest base cost |
| Natural weathering | Standard cost |
| Pre-rusted finish | Higher cost due to treatment |
| Sealed rust surface | Highest cost (extra coating) |
5. Thickness Impact on Price
Thickness directly affects weight and cost:
| Thickness | Cost Level |
|---|---|
| 1–2 mm | Lower cost |
| 3–6 mm | Medium cost (most common) |
| 6–10 mm | Higher cost |
| 10 mm+ | Heavy structural cost |
6. Standard Market Pricing Logic
Corten steel pricing is usually influenced by:
- Raw iron ore market trends
- Alloy element costs (Cu, Cr, Ni)
- Steel mill production cost
- International steel index changes
- Supply-demand balance
Because of this, unit price per kg may fluctuate over time.
7. Fabrication vs Material Cost
It is important to separate:
Material Cost
- Raw corten steel sheet price
- Based on weight
Fabrication Cost
- Cutting
- Design processing
- Surface treatment
- Installation preparation
Final project cost = material + fabrication + logistics
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