LFT Thermoplastic Carbon Fiber Material for EV Battery Pack Cover
Product Summary: This LFT (Long Fiber Thermoplastic) carbon fiber composite is engineered for high-volume production of EV battery pack components. With a density of 1.28 g/cm³ and tensile strength of 350 MPa, it offers a unique balance of weight savings and mechanical performance. The material has been validated in a Tier 1 application since 2018, demonstrating 42% weight reduction over aluminum and 18% cost reduction.
Key Selling Points
- Proven Weight Reduction: 42% lighter than aluminum in a real-world battery pack cover application (source: 8-year case study).
- High Mechanical Strength: Tensile strength 350 MPa (ISO 527-2) and flexural modulus 30,700 MPa (ISO 178) ensure structural integrity under load.
- Flame & Environment Resistance: Passes UL94 V0 and IP6K9K, providing high-voltage insulation and resistance to electrolyte.
- Cost-Effective: 18% cost reduction over aluminum while enabling integrated injection molding for high-speed mass production.
- Thermal Compatibility: CTE 28 ppm/°C compatible with aluminum, reducing thermal stress in assemblies.
Technical Specifications
| Property | Value | Test Method |
|---|
| Density | 1.28 g/cm³ | ISO 1183 |
| Tensile Strength | 350 MPa | ISO 527-2 |
| Flexural Modulus | 30,700 MPa | ISO 178 |
| Flexural Strength | 510 MPa | ISO 178 |
| Elongation at Break | 7.8% | ISO 527-2 |
| Izod Impact (Unnotched) | 40 kJ/m² | GB/T 1843 |
Models and Options
Standard grade: LFT-LCF (Long Carbon Fiber) with resin options including PA6, PA66, PA12, PPA, and PPS. Custom formulations available for specific processing or performance requirements.
Materials and Structure
Composite consists of continuous carbon fiber (5-25 mm length) fully impregnated in thermoplastic resin. The LFT process ensures uniform fiber dispersion and minimal fiber breakage for consistent mechanical properties.
Applications
- New energy vehicle battery pack upper covers
- Protective shells for battery systems
- High-voltage insulation components
- Shock-resistant enclosures for electric drivetrains
Customization
We offer customized fiber lengths (5-25 mm), resin selection (PA, PP, PPS, etc.), and additive packages for UV resistance, flame retardancy, or electrostatic discharge. Mold design and injection molding support available.
Case Study
Client: New Energy Vehicle Tier 1 (ODM)
Duration: 8 years (2018–2026)
Application: Upper cover of power battery pack + protective shell
Quantity: 120,000 units per year
Results: Weight reduction 42% vs. aluminum; cost reduction 18%; passed UL94 V0 & IP6K9K; zero after-sales cracking or leakage.
FAQ
Q1: What is the MOQ for this material?
A: Our standard MOQ is 200 units (injection molded parts). For material-only orders, please contact us for details.
Q2: Do you have IATF 16949 certification?
A: Yes, we are IATF 16949:2016 certified (certificate ZA-FCAV No.: 2501627/R0S).
Q3: Can the material achieve UL94 V0?
A: Yes, our LFT-LCF grade has passed UL94 V0 testing as demonstrated in the battery pack application.
Q4: What resin systems are available?
A: Standard options include PA6, PA66, PA12, PPA, and PPS. We can also develop custom formulations.
Q5: How does the CTE compare to aluminum?
A: The composite has a CTE of 28 ppm/°C, compatible with aluminum to minimize thermal mismatch.
Q6: Is the material suitable for injection molding?
A: Yes, it is designed for high-speed injection molding with low fiber float.
Q7: What is the typical delivery time?
A: Delivery time varies by order quantity and specification. Please contact us for a quote.
Q8: Do you offer samples for testing?
A: Yes, we can provide material samples for evaluation. Contact our sales team.
Inquiry Information
For pricing, technical data sheets, or custom development, contact:
Miss Fu
Email: baolijin@carbolft.com
Tel: +86 18664191149
WhatsApp: +86 18664191149
