Product Details
A 5mm carbon fiber sheet is not a lightweight cosmetic panel — it’s a structural workhorse. At this thickness you’re looking at a board that replaces 10mm+ aluminum plate in load-bearing setups, carries serious fastener loads without cracking, and survives the kind of abuse that would permanently deform metal. Machine builders, heavy equipment OEMs, and defense contractors spec 5mm when the part has to hold weight, take impact, and never budge.
Our 5mm plate is laid up with 12 plies of 3K carbon fiber in a balanced twill configuration, pressed at 120°C under controlled pressure to achieve 60-65% fiber volume fraction. That’s not a number we throw around — it directly controls tensile strength, flexural modulus, and how consistently the board machines across its full area. Every batch is tracked for resin content and ply orientation, so your second order machines the same way your first one did.
What makes the 5mm different from thinner sheets isn’t just that it’s thicker — it’s how you connect it. At 5mm you can run bolt-through holes with proper edge distances, press in metal inserts for repeated assembly and disassembly, and design structural joints that actually transfer load instead of just holding position. We offer embedded brass inserts, countersunk holes, and custom drilling patterns as part of the CNC service. If you’re building something that gets assembled, disassembled, or serviced in the field, the 5mm CF board gives you the connection options thinner panels can’t.
Sheet size goes up to 3m × 8m — one of the largest single-piece press capabilities from any Chinese manufacturer. Standard stock sizes ship within 3 working days. CNC machining available with ±0.05mm tolerance. Send your STEP or DXF file and we’ll ship finished parts ready for assembly.
Specifications
| Specification | Details |
|---|---|
| Material | 3K Toray T300 / T700 / T800 / T1000 carbon fiber |
| Weave Pattern | 2/2 Twill / Plain (optional) |
| Thickness | 5.0mm (±0.05mm) |
| Layup Layers | 12 plies |
| Max Sheet Size | 3000mm × 8000mm |
| Standard Sizes | 500×500mm / 600×600mm / 1000×1000mm |
| Custom Sizes | Available on request |
| Fiber Volume Fraction | 60-65% |
| Resin System | Epoxy (120°C cure) |
| Surface Finish | Matte / Glossy / One-side each |
| Density | 1.55-1.60 g/cm³ |
| Tensile Strength | ≥ 3500 MPa |
| Flexural Strength | ≥ 1200 MPa |
| Operating Temperature | -40°C to 120°C |
| Connection Options | Bolt-through / Embedded brass inserts / Countersunk holes / Bonded joints |
Applications
- Heavy machinery bases and mounts — 5mm is the entry point for structural carbon board in industrial machinery. Used as mounting plates for CNC spindles, precision linear rails, and heavy tooling where rigidity under load prevents vibration and deflection from killing your tolerances
- Structural brackets and gussets — When you need a bracket that holds weight without flexing, 5mm CF plate delivers. Bolt-through connections with proper edge distance give you joint strength that bonded-only thinner panels can’t match. Common in defense and heavy equipment assemblies
- Vehicle armor panels — 5mm carbon panels used as structural reinforcement in lightweight vehicle builds — race car bulkheads, armored door backers, and impact-resistant floor panels. The thickness gives enough material for threaded inserts and repeated fastener cycles
- Industrial robotic platforms — Base plates and mounting boards for multi-axis robots. The 5mm thickness supports embedded inserts for repeated assembly, and the stiffness keeps positioning accuracy high under dynamic loads
- Marine structural components — Load-bearing deck plates, transom reinforcements, and structural bulkheads where saltwater corrosion makes aluminum a maintenance headache. Carbon fiber doesn’t corrode — period
Why Choose YTCarbon
- One plant, full control. We press our own carbon fiber sheet from raw tow, then CNC machine every part in the same facility. No trading companies in the chain, no unknown quality, no batch-to-batch variance. We exhibited at the 2025 World UAV Expo — see what a real carbon fiber factory puts on the table
- 3m × 8m max sheet size. One of the largest single-piece press capabilities in China. For thick structural boards, that means fewer splice joints and more design freedom. Most competitors max out at 1.5m × 2m
- Connection engineering support. We don’t just sell you a flat sheet. Tell us how it gets assembled and we’ll advise on insert type, edge distance, hole patterns, and fastener torque. Our CNC service includes embedded brass inserts, helicoil threads, and countersunk holes — all in one process
- ISO 9001 certified. Quality management system audited independently. Material Test Reports available on request for traceable documentation — standard requirement for heavy-duty structural applications
- No MOQ on standard sizes. One piece for prototyping, a hundred for production, a thousand for distribution. Same material, same process, same quality standard on every order
Certifications
Every sheet we ship carries documented quality credentials. Our facility holds ISO 9001 certification for quality management, and our carbon fiber materials are RoHS and CE compliant — required if you’re selling into the EU or supplying customers who need traceable material documentation. Need a copy for your records? Just ask and we’ll send the PDF.
How to Order
Working with a factory-direct supplier means you skip the trading company markup and talk straight to the people making your sheet. Here’s how the process works: send us your requirements — thickness, size, quantity, and any CNC machining specs like hole patterns or embedded inserts. We respond with a quote within 24 hours, including material grade options and lead time. Need samples first? We ship standard-size test pieces so you can verify quality before committing to a full order. Once you confirm, we produce, inspect, and ship. Payment via T/T, PayPal, or letter of credit.
Frequently Asked Questions
+ What fastener options work with a 5mm thick carbon fiber sheet?
+ Can I step up to 6mm, 8mm, or 10mm if 5mm isn’t thick enough?
+ How does a 5mm carbon fiber board compare to steel or aluminum for structural use?
+ Do you offer CNC machining with embedded inserts for the 5mm sheet?
+ What’s the lead time for a custom 5mm structural carbon panel?
+ Can I get T700 or T1000 fiber instead of T300 for higher strength?
Need a Custom 5mm Carbon Fiber Sheet?
We offer custom sizes, CNC machining with embedded inserts, and multiple fiber grade options. From a single prototype to full production runs — contact us with your requirements.