| HS Code | 357865 |
| Material | PA12 (Polyamide 12) |
| Carbon Fiber Content | 30% |
| Color | Black |
| Condition | Dry |
| Density | 1.18 g/cm³ |
| Tensile Strength | 110 MPa |
| Tensile Modulus | 8.5 GPa |
| Elongation At Break | 4% |
| Flexural Strength | 140 MPa |
| Flexural Modulus | 6.5 GPa |
| Charpy Notched Impact Strength | 15 kJ/m² |
| Heat Deflection Temperature 1 82 Mpa | 150 °C |
| Vicat Softening Temperature | 180 °C |
| Melting Temperature | 178 °C |
As an accredited Bada BADAMID PA12 CF30 black PA12, 30% Carbon Fiber Reinforced, Dry factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Bada BADAMID PA12 CF30 black PA12, 30% carbon fiber reinforced, dry, packaged in 25 kg sealed moisture-proof foil bags. |
| Container Loading (20′ FCL) | Container Loading (20′ FCL): Bada BADAMID PA12 CF30 black, dry 30% carbon fiber reinforced polyamide, shipped as a full container load. |
| Shipping | Bada BADAMID PA12 CF30 ships in sealed, moisture-barrier packaging to prevent water absorption, as dry PA12 is hygroscopic. It is not classified as hazardous cargo, allowing standard ground or air freight. Keep containers sealed until use; avoid inhaling carbon-fiber dust during handling. |
| Storage | Store Bada BADAMID PA12 CF30 black in its original, unopened moisture-proof packaging in a cool, dry location, ideally below 30°C. Keep away from direct sunlight, heat sources, and humidity. After opening, reseal tightly and use dried desiccant if available. Properly stored, the material remains suitable for processing, preventing moisture-related defects. |
| Shelf Life | Store unopened in original sealed packaging, cool and dry. Shelf life is typically 2 years from production date. |
In underhood electrohydraulic brake module carriers, Bada BADAMID PA12 CF30 black is processed at the 30 wt% carbon fibre loading supplied as dry pellets; for snap-fit geometries requiring elongation at break above 3%, dilution with unfilled PA12 to 15–20 wt% carbon fibre is permitted only after weld-line tensile strength has been validated to ISO 527-2:2012 because carbon-fibre bridging across the knit line is reduced. Acceptable processing on a 1,200 kN hydraulic injection moulding machine with a 25 mm three-zone screw and 20:1 L/D ratio uses a melt temperature of 245°C–265°C, holding pressure of 80–120 MPa, and mould temperature of 70°C–90°C. Desiccant drying at 80°C for 4–6 h to a residual moisture content below 0.10% by Karl Fischer titration is mandatory; above 0.15% moisture, splay appears and tensile strength at the gate region decreases by 6–8% when tested to ISO 527-1:2019. Hot-runner valve gates of 0.8–1.2 mm diameter are used to keep shear rates below 40,000 s−1; higher shear reduces average fibre length from 0.22 mm to 0.11 mm and lowers flexural modulus from 16,500 MPa to 12,800 MPa under ISO 178:2019. Regrind from hot-runner sprues is limited to 15 wt% because two grinding passes on a 5 mm screen granulator reduce notch impact at 23°C below 7 kJ/m² when measured by ISO 179-1/1eA. Terminal components produced under IATF 16949:2016 clause 8.6.1.1 and validated to ISO 16750-3:2012 include ABS hydraulic unit coil carriers, electronic stability control sensor retainers, and brake-by-wire pedal angle sensor brackets.
Replacement of brass in compressed air manifold blocks by Bada BADAMID PA12 CF30 black is evaluated after creep strain at 80°C under 10 MPa tensile load remains below 1.0% after 1,000 h, using specimens conditioned to ISO 1110. The compound is not diluted below 20 wt% carbon fibre because the internal pressure resistance at 8 bar and 60°C for a 6-port manifold depends on hoop stress transfer through the fibre network; at 30 wt% carbon fibre, flexural modulus measured by ISO 178:2019 is approximately 15,000–17,000 MPa. Injection moulding on a 30 mm low-shear screw with 22:1 L/D uses a melt temperature of 250°C–270°C, a mould temperature of 60°C–80°C, gate diameters of 1.0–1.5 mm, and fill time of 0.8–1.5 s to prevent jetting. Desiccant drying at 80°C for 4 h to below 0.10% moisture is required; when moisture exceeds 0.20%, the manifold body shows 0.3–0.5% post-mould warpage after 72 h. Terminal parts include 6- to 12-port pneumatic manifolds, push-in coupling bodies, and valve island frames, with system design compliance to ISO 4414:2010 and compressed air quality to ISO 8573-1:2010; assemblies for potentially explosive atmospheres are assessed under ATEX Directive 2014/34/EU Category 3.
When the threaded brass insert of a mountain bike cleat is subjected to 50 Nm installation torque, fatigue failure in the surrounding matrix is the limiting criterion; at the 30 wt% carbon fibre loading of Bada BADAMID PA12 CF30 black, the tensile modulus measured by ISO 527-1:2019 is approximately 16,000 MPa, and the notched Charpy impact at 23°C is around 8 kJ/m² by ISO 179-1/1eA. The as-supplied 30 wt% black grade is not substantially let down for high-cycle components; dilution to 20 wt% carbon fibre is accepted only for leisure pedal bodies where the retention torque requirement is below 20 Nm. Downstream processing uses two-component insert overmoulding on a vertical 900 kN injection moulding machine with a 22 mm screw, melt temperature of 245°C–265°C, mould temperature of 70°C–90°C, and an insert preheat station set to 110°C–130°C to reduce the shrinkage differential between the stainless steel cleat plate and the polymer matrix. After moulding, parts are conditioned at 23°C and 50% RH for 48 h; PA12 absorbs about 0.7% moisture at equilibrium, and post-conditioning engagement release torque is retested after 1,000 cycles. Compliance with ISO 4210-2:2015 safety requirements is documented for terminal parts that include two-bolt MTB cleat bodies, carbon-reinforced pedal body shells, and 11-tooth derailleur pulleys.
For wafer-handling end effectors, electrostatic dissipation rather than mechanical stiffness is the first design filter; surface resistivity is measured according to IEC 61340-2-3:2016 and must remain between 104 and 106 Ω/sq on a 300 mm wafer cassette bracket to prevent charge accumulation. Bada BADAMID PA12 CF30 black achieves this at the 30 wt% carbon fibre loading without migratory antistatic additives, but adding unfilled PA12 above 5 wt% in the forming ratio raises surface resistivity above 109 Ω/sq; therefore the carbon fibre level is maintained at 25–30 wt%. Machining from extruded stock is preferred over injection moulding when flatness across a 200 mm bracket must stay within 0.05 mm; the stock is dried at 80°C for 6 h, stress-relieved at 100°C for 2 h, and then contoured on a 12,000 rpm spindle at 1,200–1,800 mm/min with a 0.2 mm depth of cut using polished carbide tools. Coolant is omitted to avoid surface contamination, and the component is cleaned with 70% isopropanol before packaging. Terminal parts include vacuum end effector bodies, wafer cassette brackets, ESD-safe robot gripper fingers, and alignment tooling used in front-opening unified pods.
| Control point | Test method / standard | Acceptance criterion |
|---|---|---|
| Surface resistivity | IEC 61340-2-3:2016 | 104–106 Ω/sq |
| Charge decay time | IEC 61340-2-1:2015 | <2 s from 1,000 V to 100 V |
| Outgassing | SEMI S2-0720 | No visible condensables on optics |
Magnetic flux leakage inspection tools reject stainless steel wear shoes because their magnetic permeability distorts the leakage field; the carbon-fibre-filled PA12 houses the sensor array without generating a metallic signature. The compound is processed at the 30 wt% carbon fibre loading, and because oil and gas client specifications often prohibit regrind, runners and rejected parts are either excluded or held below 5 wt%; several operators specify virgin material only. Thick-walled segment blanks are compression-moulded at 220°C–240°C and 10–15 MPa, after desiccant drying at 80°C for 6 h to below 0.10% moisture, and are then CNC-contoured to the final wear shoe profile. Hydrostatic exposure in simulated produced water at 80°C for 28 days is followed by tensile strength measurement to ISO 527-1:2019 and dimensional change assessment to ISO 62:2008; published data for this specific configuration is limited, so acceptance is usually set at a maximum 2.5% volume change. Compliance is aligned with ISO 23936-1:2009 and NORSOK M-710:2014 qualification provisions. Terminal products include MFL inspection tool spacers, wear shoe segments, sensor mounting pods, and bumper rings.
After a patient-specific socket shape is digitised, the load-bearing adapter made from PA12 CF30 is CNC-drilled and bonded to the socket to replace a titanium component when modular adjustability and lower mass are required. The material is used at the full 30 wt% carbon fibre loading, with no reclaim or regrind allowed for devices supplied under EU MDR 2017/745; any reprocessing of sprues requires renewed cytotoxicity validation to ISO 10993-5:2009 and irritation testing to ISO 10993-10:2010. Orthotic shell production starts with extruded sheet at 3–5 mm thickness, heated in a convection oven at 180°C–210°C, and vacuum-formed over a plaster cast; prosthetic adapters are injection-moulded on an 800 kN machine with a 25 mm screw at 250°C–270°C melt temperature and 70°C–90°C mould temperature, then CNC-drilled. Cyclic bending tests are performed to ISO 22523:2006; when the stress is kept below 45 MPa, retained bending stiffness after 106 cycles at 2 Hz is a commonly accepted criterion of 90% of initial stiffness, though specific published data for this black carbon-fibre-reinforced PA12 configuration is limited. Terminal product types include prosthetic socket load-bearing adapters, dynamic ankle-foot orthosis shells, and exoskeleton joint clamp rings.
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Bada BADAMID PA12 CF30 black is a polyamide 12 compound loaded with 30 wt% chopped carbon fibre and supplied in a dry, moisture-controlled state. The dry designation indicates that the granules are packed under a residual moisture limit, normally not exceeding 0.10 wt%, as checked by ISO 15512 or an equivalent loss-on-drying method. The material is intended for injection moulding and extrusion processes in which a part must combine higher tensile and flexural modulus, lower creep, and reduced humidity-driven dimensional movement compared with unfilled PA12. Because the carbon fibre loading creates an electrically dissipative surface, the exact resistivity depends on the moulded surface condition, fibre dispersion, and part thickness.
Published dry-as-moulded data for the grade are generated on injection-moulded ISO multipurpose specimens. They are not purchase specification limits. The product name identifies the matrix as PA12, the filler as 30% carbon fibre, and the colour as black; at this loading level, the black carbon fibre dominates appearance and light shades are not practical.
| Property | Test method | Indicative range |
|---|---|---|
| Density | ISO 1183-1 | 1.22–1.28 g/cm³ |
| Tensile modulus | ISO 527-1/-2 | 12,000–18,000 MPa |
| Tensile strength at break | ISO 527-1/-2 | 120–180 MPa |
| Elongation at break | ISO 527-1/-2 | 1.5–3.5 % |
| Flexural modulus | ISO 178 | 11,000–16,000 MPa |
| Charpy notched impact | ISO 179-1/1eA | 4–8 kJ/m² |
| Charpy unnotched impact | ISO 179-1/1eU | 30–45 kJ/m² |
| Heat deflection temperature, 1.8 MPa | ISO 75-1/-2 | 150–175 °C |
| Vicat softening temperature | ISO 306 | 165–180 °C |
| Water absorption after 24 h at 23 °C | ISO 62 | 0.3–0.6 % |
| Mould shrinkage, parallel/flow | ISO 294-4 | 0.1–0.4 % |
| Mould shrinkage, transverse | ISO 294-4 | 0.3–0.6 % |
The table aggregates typical compounder-published ranges for 30% carbon-filled PA12; each lot certificate should be used for design and processing limits. Moisture conditioning, thermal ageing, or regrind addition will shift these values.
At equal filler mass fraction, carbon fibre lowers compound density relative to short glass fibre because carbon fibre density is below that of E-glass. The practical difference in moulded density is often 0.05–0.10 g/cm³ at 30 wt% loading. Carbon fibre also raises thermal conductivity and reduces linear thermal expansion more effectively in the fibre direction. Flow-direction coefficient of linear thermal expansion for a carbon-filled PA12 can approach 1.0–2.5 × 10⁻⁵ K⁻¹, while the transverse direction remains several times higher. Glass-filled PA12 shows a narrower expansion anisotropy but a higher average coefficient. For flat parts, the carbon-filled grade may therefore show a lower average expansion but a larger warpage risk if the fibre orientation field is unbalanced.
The electrical behaviour also separates the two. A short-glass-reinforced PA12 remains electrically insulating, while a carbon-filled PA12 can produce surface resistivity values below 10⁶ Ω under appropriate moulding conditions. The value is influenced by fibre sizing, jetting, and the presence of resin-rich skin layers. If a part requires guaranteed static decay or ESD performance, component-level testing according to IEC 61340-2-3 is necessary.
Relative to a 30% carbon-filled PA66, the PA12 matrix absorbs less moisture, so mechanical properties and dimensions are less sensitive to humid environments and frequent wet-dry cycles. The trade-off is a lower melting point and generally lower continuous-use temperature under load. PA12-based grades are also used where resistance to zinc chloride or greases is required, but each fluid should be tested under ISO 175 because carbon fibre sizing and additives can alter chemical resistance.
For part design, the fibre orientation field created by the melt front controls local stiffness, shrinkage, and thermal expansion. In a simple edge-gated plate, the central flow region may shrink less along the flow direction and more across it, producing a saddle shape if the tool is cooled non-uniformly. Cooling line layout should account for the higher in-plane thermal conductivity of carbon-filled PA12; heat removal is not limited by the polymer matrix alone. Shrinkage datasets based on ISO 294-4 plaques require correction for gating, wall thickness, and packing pressure because the plaque does not represent the shear and extension history of a complex part. Warpage prediction through injection-moulding simulation should use fibre-orientation coupled material data, not isotropic coefficients.
Compounding of the carbon fibre into the PA12 matrix is usually carried out on a twin-screw extruder with side-feeding. Side-feeding after the melting zone limits fibre breakage and preserves enough aspect ratio for mechanical reinforcement. On production-scale lines with 40:1 to 52:1 L/D rotors, the torque curve shifts upward when the carbon fibre is introduced; vent-port fouling from loose fibre can occur if vacuum ports are not fitted with adequate filtered or liquid-ring vacuum systems. The final pellet is dry-blended and packed in moisture-barrier bags; opened bags should be re-sealed or consumed within the plant’s validated moisture-uptake period.
The dry state is not permanent. Once the barrier packaging is opened, PA12 will re-absorb water from ambient air. At 23 °C and 50% RH, PA12 reaches a lower equilibrium moisture than PA6 or PA66, but sufficient moisture remains to generate surface splay and reduced weld-line strength if the melt is processed without drying. Drying is recommended whenever the material has been exposed to relative humidity above 60% for more than a few hours or when moisture analysis exceeds 0.10 wt%.
Desiccant drying is the accepted industrial method. A hopper or tray dryer should hold the granulate at 75–85 °C for 4–8 h, with a supply air dew point of -30 °C or lower. High-humidity plants using hot-air hopper dryers may fail to reach this dew point, especially during summer months. Overly severe drying above 90 °C or drying beyond 12 h can discolour the PA12 matrix or degrade the carbon fibre sizing, shifting interfacial shear strength and impact behaviour. Lot-specific moisture certificates should be compared with in-house Karl Fischer or ISO 15512 measurements before start-up.
The carbon fibre increases melt viscosity at low shear rates and raises thermal conductivity, causing faster gate freeze-off than unfilled PA12. These two effects require larger gates and shorter holding-pressure delays. Edge gates with a thickness below 1.0 mm may freeze before adequate packing in wall sections above 2 mm; valve-gate or full-round sprue designs reduce stagnation and shear heating. On injection-moulding machines, a screw with an L/D of 18:1 to 22:1 and a compression ratio of 2.0:1 to 2.5:1 is generally used, with bimetallic barrel and wear-resistant screw coatings because the carbon fibre is abrasive. Melt temperature at the nozzle is typically set between 250 °C and 290 °C, and mould temperature is set between 80 °C and 120 °C. Higher mould temperatures improve fibre wetting and reduce surface roughness but extend cycle time.
Filling pressure in thin-wall tools can reach 80–120 MPa at the screw tip. The required clamp force follows from projected area and cavity pressure rather than a fixed material constant; for wall thickness between 1.5 mm and 3.0 mm, cavity pressure during packing often remains above 30–50 MPa. Screw back pressure should be kept moderate to avoid unnecessary fibre breakage. If a hot-runner system is used, the manifold should avoid sharp turns and dead zones; residence time at melt temperature above 300 °C increases the risk of PA12 degradation and sizing decomposition.
Start-up with a cold tool or a hopper that has not reached the drying specification often produces incomplete fill or surface splay. These defects should not be corrected by raising melt temperature alone because fibre sizing decomposition can produce gas, yellowing, or reduced tensile strength. If the material has been accidentally wetted, desiccant drying to the specified dew point is mandatory; vacuum drying at lower temperatures can be used but requires longer residence time. Reprocessing of regrind from this grade is limited because each melt pass breaks carbon fibre and shifts the fibre length distribution. For critical structural parts, regrind content above 25% is generally not recommended unless the moulder has established the effect on notched impact and weld-line strength through in-house trials.
On production lines, the most common failure mode observed with carbon-filled PA12 is gate erosion in soft steel tooling. Hardened gate inserts of HRC 54 or higher are often specified for runs above 50,000 shots because the fibre can widen the gate land and shift the pressure drop. Screw tip and check ring wear are also monitored by periodic melt cushion stability; a drifting cushion at constant settings can indicate abrasive wear of the non-return valve. Maintaining the melt cushion above 2 mm and recording shot weight over time provides an early warning for screw or check ring degradation.
Carbon-filled PA12 grades generate a wear surface that can reduce unlubricated friction against steel. The compound is also more abrasive to aluminium or soft polymer counterfaces than unfilled PA12. Qualification for a sliding part should use block-on-ring or pin-on-disc protocols such as ASTM G99 with the actual counterface material and surface finish. Under cyclic loading, weld lines and fibre orientation determine failure. Standard ISO 527 tensile data do not reflect long-term dynamic loading; endurance testing on notched or weld-line specimens is necessary when repeated stress exceeds roughly 40–50% of the measured tensile strength.
Impact response is sensitive to moisture. Dry-as-moulded parts can be more brittle than conditioned parts because moisture plasticises the PA12 matrix. If the part will operate in humid air or water, notched Charpy values may shift upward after conditioning according to ISO 1110, while tensile modulus may decrease. The dry designation therefore describes the supply condition and should not be confused with the as-service moisture state.
In sliding applications, the carbon fibre reduces the transfer film thickness on the steel counterface compared with glass-filled PA12. The wear rate is highly load-dependent; above the limiting PV value for the part geometry, frictional heating can soften the PA12 matrix and produce surface smearing. Published data for this specific configuration is limited for PV limits, so component-level PV testing under ASTM D3702 or end-use motion profiles is required. Mating surfaces with roughness below Ra 0.2 μm are sometimes used to reduce initial abrasive wear, but too smooth a counterface can reduce transfer-film adhesion and increase stick-slip.
Bada BADAMID PA12 CF30 black is used in injection-moulded housings, brackets, gears, rollers, clips, and support structures where the combination of low moisture uptake, high stiffness, and reduced thermal expansion is necessary. In automotive or industrial fluid environments, it is often evaluated as an alternative to carbon-filled PA66 or glass-filled PA12. The carbon-filled PA12 grade should not be selected for applications requiring translucency, light colours, or guaranteed electrical insulation.
Chemical exposure should be screened using ISO 175 immersion in the target fluid at the expected service temperature. Aliphatic hydrocarbons, greases, many hydraulic fluids, and zinc chloride solutions are generally within the PA12 compatibility range, while strong oxidizing acids, phenols, and concentrated formic acid are not. The presence of carbon fibre does not remove the need for stress-cracking evaluation under simultaneous mechanical load and chemical contact.
Compared with unfilled PA12, the carbon-filled grade raises tensile modulus by a factor of roughly 5–8, reduces elongation at break from above 200% to below 5%, and lowers mould shrinkage by more than half. The material remains notch-sensitive, and impact strength drops relative to unfilled PA12. Unfilled PA12 is more ductile and suitable for snap-fit deformation; the carbon-filled grade should not be used for living hinges or large-strain snap arms unless the design has been explicitly developed for low elongation.
Regulatory declarations for the product may be requested from the compounder. The grade is normally supplied with a certificate of analysis and can be accompanied by statements for Directive 2011/65/EU (RoHS) and Regulation (EC) No 1907/2006 (REACH). Food-contact and medical-grade status are not implied by the dry designation or the base-polymer grade. For potable water or skin-contact parts, additional migration and biocompatibility testing under the applicable national and regional standards is required.
Published data for specific end-use configurations is limited. Part qualification should therefore include injection-moulded specimens of the actual wall thickness, weld-line tensile bars, moisture-conditioned specimens, and dimensional measurements after cycle testing. Processing limits must be established on the target production machine rather than transferred from an unrelated datasheet.
