In high-precision engineering, the thickness of your copper plate directly dictates the thermal ROI and the "I-squared R" heat dissipation of your final assembly. Relying on generic copper charts is a procurement risk; C10100 Oxygen-Free Electronic (OFE) copper has a specific density of 8.94 g/cm³ (0.323 lb/in³) that must be used for exact weight-based budgeting. As a leading C10100 copper plate supplier, GNEE METAL ensures that every C10100 thick copper board meets the 99.99% purity and Max 5ppm oxygen limits required for UHV and 800V EV cooling platforms.
What are the OFE copper sheet standard sizes for 2026?
Inventory availability is the primary bottleneck for project timelines. We maintain a heavy stock of OFE copper sheet standard sizes to minimize lead times for semiconductor and aerospace projects. While standard mill sizes are 24" x 96" and 36" x 96", we specialize in OFE copper sheet cut to size orders using precision waterjet and saw-cutting to reduce material waste.
Maintaining a strict C10100 plate flatness tolerance is mandatory for automated assembly. If a plate is warped, your CNC Machined C10100 Parts will suffer from dimensional drift and seal failures in vacuum chambers.
C10100 Plate & Sheet Thickness Chart (Imperial & Metric)
| Thickness (inch) | Thickness (mm) | Weight (lb/sq.ft) | Weight ( kg/m ²) | Common Application |
| 0.040" | 1.016 mm | 1.86 | 9.08 | EMI Shielding / FPCs |
| 0.125" | 3.175 mm | 5.82 | 28.4 | EV Busbars / C10100 Foil |
| 0.250" | 6.350 mm | 11.64 | 56.8 | AI GPU Cold Plates |
| 0.500" | 12.70 mm | 23.28 | 113.6 | UHV Flanges / ASTM F68 Seals |
| 1.000" | 25.40 mm | 46.56 | 227.2 | Heavy Electrodes |
| 2.000" | 50.80 mm | 93.12 | 454.4 | Superconducting Support |
How to calculate the weight for OFE copper sheet cut to size?
To calculate the cost of a high-purity project, you must account for the exact density of 99.99% copper. Because C10100 lacks the internal oxides found in ETP copper, its weight is more predictable across the entire plate. Use the following formulas for your BOM (Bill of Materials):
Imperial: Weight (lbs) = Thickness (in) x Width (in) x Length (in) x 0.323
Metric: Weight (kg) = Thickness (mm) x Width (m) x Length (m) x 8.94
When you buy from an ASTM F68 copper plate wholesale partner, the weight on the invoice should perfectly match the 101% IACS material delivered. Any significant weight deviation is a red flag for a sourcing trap, indicating either lower purity or high porosity.
Do you need a specific plate weight for a 12-month budget or a custom-thickness simulation?
Why is C10100 plate flatness tolerance critical for machining?
A plate that isn't perfectly flat will "bow" during CNC milling, causing the tool to cut too deep or too shallow. For C10100 Oxygen-Free Electronic copper, we utilize precision tension leveling to ensure the C10100 plate flatness tolerance exceeds ASTM B152 standards.
Flatness is also vital for thermal contact. As discussed in our C10100 vs. Brass, copper dissipates heat 3x faster than brass, but only if the entire plate surface makes contact with the heat source. Any air gap caused by a warped plate will create a thermal bottleneck.
Thickness Tolerances for ASTM B152 Plate
| Thickness Range | Standard Tolerance | GNEE Precision Level |
| 0.125" – 0.500" | +/- 0.010" | +/- 0.003" |
| 0.501" – 1.000" | +/- 0.015" | +/- 0.005" |
| 1.001" – 2.000" | +/- 0.025" | +/- 0.008" |
FAQ
1. Does a C10100 copper plate supplier offer custom thicknesses?
Yes. While we stock OFE copper sheet standard sizes, we can perform custom cold-rolling and precision grinding to reach any thickness required for your design, often with tolerances tighter than +/- 0.002".
2. Is the weight of C10100 the same as C11000?
Technically, yes, both are 8.94 g/cm³. However, C11000 can have slightly lower density if it has high internal oxygen/oxide content. C10100 (OFE) is vacuum-melted to ensure a consistent atomic lattice and zero porosity.
3. How do you protect thick copper board from bending during shipping?
As an ASTM F68 copper plate wholesale partner, we ship all heavy plates in reinforced, ISPM-15 wooden crates. We use VCI protection as detailed in our C10100 Packaging Guide to ensure the 101% IACS surface remains oxide-free.
4. Can I get OFE copper sheet cut to size with a specific Ra finish?
Yes. We provide plates with a standard machined finish, but for UHV applications, we can achieve sub-micron C10100 surface finish Ra through precision grinding or polishing.
5. Why is the C10100 machinability rating important for thick boards?
C10100 has a machinability rating of 20%. For a C10100 thick copper board, you need high-rake tools and the correct C10100 hardness and temper to prevent the metal from "smearing" and causing dimensional errors.
6. Do you ship C10100 plate with Mill Test Reports?
Every order includes a full MTR (Mill Test Report) verifying the 99.99% purity, 5ppm oxygen limit, and 101% IACS conductivity. This is mandatory for Aerospace and Medical compliance.
GNEE METAL Product Range
| Product Type | Shapes Available | Common Grades | Diameter/Thickness Range | Length/Width Range | Applications |
|---|---|---|---|---|---|
| Copper Tubes | Round, Square, Rectangular, Coiled | C10100, C10200, C11000, C12200, C12000 | OD: 0.5mm - 300mm Wall: 0.1mm - 20mm | Up to 6000mm or custom | HVAC, Plumbing, Heat Exchangers, Refrigeration, Hydraulic Lines |
| Copper Plates & Sheets | Flat Sheets, Perforated, Embossed, Tread Plate | C10100, C11000, C12200, C23000, C26000 | Thickness: 0.1mm - 200mm | Width: Up to 2500mm Length: Up to 6000mm | Electrical Busbars, Roofing, Cladding, Gaskets, Transformers |
| Copper Bars & Rods | Round Bar, Square Bar, Hexagonal Bar, Flat Bar | C10100, C11000, C14500, C17200, C18200 | Diameter: 1mm - 300mm | Length: 1000mm - 4000mm | Machined Components, Electrical Contacts, Busbars, Fasteners |
| Copper Wires | Round Wire, Flat Wire, Square Wire, Stranded, Braided | C11000, C11600, C17200, C17510 | Diameter: 0.05mm - 12mm | Coil weights: 1kg - 500kg | Electrical Wiring, Cables, Springs, Mesh, Welding Wire |
| Copper Strips & Coils | Thin Strip, Foil, Slit Coil, Profile Strip | C11000, C12200, C19400, C26000, C26800 | Thickness: 0.03mm - 5mm | Width: 2mm - 1000mm Coil ID: 300mm - 600mm | Transformers, Radiators, Shielding, Terminals, Connectors |
About Our Factory
We operate a full range of production lines including extrusion presses, cold drawing benches, high-speed rolling mills, slitting lines, and precision CNC machining centers, enabling us to produce copper tubes, plates, bars, wires, and strips entirely in-house. For quality assurance, we maintain a dedicated inspection laboratory equipped with spectral analyzers, universal testing machines, hardness testers, surface roughness testers, and optical measuring instruments. Every batch is tested for chemical composition, mechanical properties, and dimensional accuracy before shipment. Our production capacity reaches 500+ tons per month, and we hold ISO 9001:2015 certification with full traceability from raw material to finished product. Whether you need standard mill stock or custom-processed components, we deliver precision copper products with short lead times and complete material certification.
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