High Strength Carbon Fiber Rod

High Strength Carbon Fiber Rod

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Product Brief

GBTECH high strength carbon fiber rod is a solid cylindrical composite rod manufactured by pultrusion process using continuous high-strength carbon fiber and epoxy resin. With an axial tensile strength of 1200-2000 MPa and elastic modulus of 120-138 GPa, the rod weighs approximately 1.6 g/cm³ — about 75% lighter than steel of the same cross-section. Available in diameters from 0.8mm to 200mm with tolerance of ±0.05-0.1mm, it serves as a versatile structural rod for drone parts, outdoor equipment, robotics and mechanical supports.

1. Product Specifications

Material: Continuous carbon fiber + epoxy resin (pultruded)

Diameter: 0.8-200mm (customizable)

Diameter Tolerance: ±0.05-0.1mm

Max Length: Continuous pultrusion, custom cut length

Tensile Strength (axial): 1200-2000 MPa (ASTM D3039)

Elastic Modulus: 120-138 GPa

Density: ~1.6 g/cm³

Fiber Content: ~60-70%

Certification: ISO 9001 Quality Management Certification

2. Product Features

High Axial Tensile Strength: Pultrusion aligns continuous fibers along the rod axis, delivering 1200-2000 MPa axial tensile strength — far exceeding steel at a fraction of the weight.

Excellent Straightness & Dimensional Accuracy: The pultrusion process ensures consistent diameter along the full length with straightness tolerance suitable for precision assembly. Diameter tolerance of ±0.05mm available on request.

Lightweight & Corrosion Resistant: At ~1.6 g/cm³, the rod is 75% lighter than equivalent steel. It does not rust, resist moisture and chemical corrosion, making it ideal for outdoor and marine applications.

Wide Diameter Range & Custom Cutting: From 0.8mm micro rods to 200mm large-diameter bars, covering micro-electronics to heavy structural applications. Custom cut lengths and end finishing available.

3. Applications

Drone & RC Models: Drone landing gear rods, RC car pushrods, helicopter flybar replacements and model aircraft structural spars.

Outdoor & Sports Equipment: Tent poles, kite rods, ski poles, hiking poles and fishing rod blank cores.

Robotics & Automation: Robot linkage rods, linear motion support pins and sensor mounting rods.

Industrial & Mechanical: 3D printer shafts, equipment support rods, jigs and fixture pins.

Explore our other High-Strength Carbon Fiber Tubes and Custom Carbon Fiber Products to meet different needs.

4. Customization Services & Options

We offer full customization including diameter, length, surface finish (smooth/matte), fiber content and special tolerances. Precision cutting, end chamfering and custom packaging are available. Contact us for your carbon fiber rod solution.

5. Pricing & Purchase Information

Price: Pricing depends on diameter, length, order quantity and tolerance requirements. Small-diameter rods are priced by length; large bars by weight.

Stock Availability: Common diameters (3mm, 4mm, 5mm, 6mm, 8mm, 10mm) are stocked for fast delivery.

Shipping Options: Worldwide delivery; rods are cut to length and packed in PVC tubes.

6. Customer Reviews & Cases

"We use 4mm carbon fiber rods as RC car pushrods. The straightness is excellent and they don't flex under load. The surface finish is smooth and consistent across batches."

"Our outdoor equipment uses 8mm pultruded rods as support spars. After two seasons outdoors, no corrosion or deformation. The weight saving compared to aluminum is significant."

7. FAQ

What is the difference between a carbon fiber rod and a carbon fiber tube?

A rod is solid with higher axial compressive strength and torsional rigidity; a tube is hollow and lighter, better for bending applications where weight matters most.

What diameter carbon fiber rod is most commonly used?

3mm, 4mm, 5mm, 6mm and 8mm are the most popular diameters for drone parts, RC models and outdoor equipment.

Can the rod be bent or formed?

Pultruded rods are rigid and cannot be cold-bent. Curved shapes require special layup processes. Straight rods can be cut and assembled into frames.