CCF300 UD-BMI
Matrix
also T300
UD-BMI = uD/bismaleimide laminate
Choose the bismaleimide prepreg when the part must run 150–230 °C continuously, as in engine nacelles and supersonic skins; the cure temperature is high and the process window narrow.
Values for the UD-BMI condition
Other CCF300 grades and fills
CCF300 is listed in 8 conditions; see the grade overview at CCF300.
Compare all 8 grades and fillsHide
| Grade · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
Chopped/short-fiber thermoplastic compound | Pick the chopped-fiber PA, PPS or PEEK compound for injection-molded parts that need stiffness, electrical conduction and dimensional stability rather than structural strength (220 MPa tensile). | — | 220 | 1.8 | — |
Woven fabric/epoxy laminate | Pick the 3K plain or twill weave laminate at ~55 vol% fiber for curved shells and cosmetic parts: quasi-isotropic in-plane properties, better impact tolerance and drape, but lower 0° stiffness. | — | 800 | 1.3 | — |
UD-BMIThis page UD/bismaleimide laminate | Choose the bismaleimide prepreg when the part must run 150–230 °C continuously, as in engine nacelles and supersonic skins; the cure temperature is high and the process window narrow. | — | 1,700 | 1.2 | — |
UD/epoxy laminate | Use the ~60 vol% unidirectional prepreg cured at 120–180 °C as the baseline for aerospace secondary and primary structure: 0° stiffness and strength are highest, transverse properties are resin-controlled. | — | 1,750 | 1.3 | — |
12000-filament tow | Choose the 12000-filament tow for filament-wound cylinders, pultruded profiles and unidirectional prepreg; it is the workhorse small-tow size and gives the lowest cost per kilogram of fiber. | — | 3,500 | 1.5 | — |
3KDefault 3000-filament tow, sized for epoxy | Use the 3000-filament epoxy-sized tow as the standard small tow for fabrics, filament winding and high-performance prepreg, where drape and surface quality are best. | — | 3,530 | 1.6 | — |
1000-filament tow | Pick the 1000-filament tow for thin fabrics, fine braids and lightweight cosmetic laminates; fiber properties stay at 3530 MPa and 230 GPa, but unit price is the highest. | — | 3,530 | 1.6 | — |
6000-filament tow | Choose the 6000-filament tow as the compromise for fabrics and winding, retaining acceptable drape while covering area faster than finer tows. | — | 3,530 | 1.6 | — |
What is CCF300 UD-BMI?
CCF300 UD-BMI is CCF300 in the UD-BMI condition — choose the bismaleimide prepreg when the part must run 150–230 °C continuously, as in engine nacelles and supersonic skins; the cure temperature is high and the process window narrow. CCF300 UD-BMI has a tensile strength of 1,700 MPa (247 ksi), stronger than 76% of composite grades. Elongation at break is 1.2% and the elastic modulus is 135 GPa (19.6 Msi). CCF300 UD-BMI has a density of 1.6 g/cm³ (0.0578 lb/in³), lighter than 53% of composite grades. 3K is the default condition FabDigit quotes; UD-BMI is available on request or by drawing note.
Limitations
- Difficult to machine — 20/100, worse than 77% of composite grades
CCF300 UD-BMI properties
Typical room-temperature values for CCF300 UD-BMI; 15 are specific to this condition. Other listed values are CCF300 reference data and may not represent this condition. Bars are the position among composite grades.
Physical1
CCF300 UD-BMI has a density of 1.6 g/cm³ (0.0578 lb/in³), lighter than 53% of composite grades.
Mechanical5
CCF300 UD-BMI has a tensile strength of 1,700 MPa (247 ksi), stronger than 76% of composite grades. Elongation at break is 1.2% and the elastic modulus is 135 GPa (19.6 Msi).
Thermal6
CCF300 UD-BMI is rated for continuous service to 200°C (392 °F). It conducts heat at 5 W/m·K (2.89 BTU/hr·ft·°F), better than 64% of composite grades. Thermal expansion is -0.4 µm/m·K (-0.222 µin/in·°F).
Electrical2
CCF300 UD-BMI has an electrical resistivity of 5×10⁻⁵ Ω·m.
Chemical & Environmental3
Corrosion resistance is excellent (85/100), better than 65% of composite grades. UV resistance is excellent.
Sustainability3
Producing a kilogram of CCF300 UD-BMI takes about 300 MJ of energy and emits 25 kg of CO₂ — more than 68% of composite grades. Typical recycled content is 0%.
Manufacturability1
CCF300 UD-BMI's machinability is poor (20/100, worse than 77% of composite grades).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with CCF300 UD-BMI
Is CCF300 easy to machine?
Cut cured parts dry with PCD or diamond-coated tooling at high speed and low feed with dust extraction. Back up drilled holes with a sacrificial plate to prevent delamination; the dust is conductive and harmful, so collect it under negative pressure.
Can CCF300 be welded?
Thermoset laminates cannot be welded; join by adhesive bonding or mechanical fasteners. Chopped carbon fiber reinforced thermoplastics can be ultrasonically or laser welded, but joint strength is substantially reduced.
Can CCF300 be formed, bent or molded?
Process by autoclave prepreg cure (120 °C or 180 °C, 0.4–0.6 MPa), compression moulding, or RTM/VARI liquid moulding. Design wound parts around tension and wind angle, and control resin content to keep void content below 2 %.
What surface finishes work on CCF300?
After sanding, remove all dust and seal with epoxy primer. Cosmetic parts take clear coat or a UV-blocking topcoat to protect the resin; at aluminum or steel joints add glass cloth or polysulfide sealant as galvanic isolation.
CCF300 chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| Ccarbon content of PAN-based carbon fiber | 93 – 96 | 95 |
| Nresidual nitrogen | 3 – 5 | 4 |
| sizing (epoxy-compatible)sizing selected to match the matrix resin | 0.8 – 1.5 | 1.2 |
| H+O+ashbalance; includes trace ash (<0.1%) | balance | — |
CCF300 UD-BMI — frequently asked
What is CCF300 UD-BMI used for?
CCF300 UD-BMI is typically used for aircraft secondary structures, domestic sporting goods, pressure vessels and wind blades. In short: T300-class general purpose; low-cost standard modulus; widest product form range.
What is the tensile strength of CCF300 UD-BMI?
CCF300 UD-BMI has a typical tensile strength of 1,700 MPa (247 ksi) — stronger than 76% of composite grades. Strength varies by condition: see the 8 listed tempers.
Is CCF300 UD-BMI easy to machine?
Not especially — machinability is rated poor (20/100, worse than 77% of composite grades). Cut cured parts dry with PCD or diamond-coated tooling at high speed and low feed with dust extraction. Back up drilled holes with a sacrificial plate to prevent delamination; the dust is conductive and harmful, so collect it under negative pressure.
Can CCF300 UD-BMI be welded?
Thermoset laminates cannot be welded; join by adhesive bonding or mechanical fasteners. Chopped carbon fiber reinforced thermoplastics can be ultrasonically or laser welded, but joint strength is substantially reduced.
What surface finishes work on CCF300 UD-BMI?
After sanding, remove all dust and seal with epoxy primer. Cosmetic parts take clear coat or a UV-blocking topcoat to protect the resin; at aluminum or steel joints add glass cloth or polysulfide sealant as galvanic isolation.
Can CCF300 UD-BMI be formed, bent or molded?
Process by autoclave prepreg cure (120 °C or 180 °C, 0.4–0.6 MPa), compression moulding, or RTM/VARI liquid moulding. Design wound parts around tension and wind angle, and control resin content to keep void content below 2 %.
What is the maximum service temperature of CCF300 UD-BMI?
CCF300 UD-BMI is rated for continuous use to about 200°C (392 °F), and briefly to 500°C. Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Sources
- ASM Handbook Vol. 21: Composites — ASM International (2001)
- CMH-17 Composite Materials Handbook (Polymer Matrix Composites) — SAE International (2012)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.