| HS Code | 960849 |
| Density | 1.08 g/cm³ |
| Tensile Modulus Conditioned | 8500 MPa |
| Tensile Strength At Break Conditioned | 95 MPa |
| Elongation At Break Conditioned | 3 % |
| Flexural Modulus Conditioned | 7500 MPa |
| Charpy Impact Strength Unnotched Conditioned | 40 kJ/m² |
| Charpy Impact Strength Notched Conditioned | 5 kJ/m² |
| Heat Deflection Temperature At 1 8 Mpa Conditioned | 150 °C |
| Melting Point | 178 °C |
| Water Absorption At Saturation In 23 C Water | 1.2 % |
As an accredited EMS-Grivory Grilamid LC-15H black Nylon 12, 15% Carbon Fiber Filled, Conditioned factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Supplied in sealed moisture-barrier bags, each containing 25 kg of conditioned black carbon-fiber-filled nylon 12 pellets. |
| Container Loading (20′ FCL) | 20′ FCL: Grilamid LC-15H packed in sealed bags on pallets, securely loaded, containerized for safe transport. |
| Shipping | Ship as conditioned nylon resin in sealed moisture-barrier bags or containers to preserve properties. Store away from excessive heat, humidity, and direct sunlight. Handle with care to avoid damaging pellets. Standard ambient transport is suitable; no hazardous goods restrictions apply. |
| Storage | Store Grilamid LC-15H in its original, sealed container in a cool, dry environment away from direct sunlight and heat sources. Since nylon 12 is hygroscopic, minimize moisture exposure; use desiccant if necessary. Keep the area well-ventilated and free from contaminants. Typical room temperature storage is acceptable, but avoid condensation and prolonged storage under humid conditions. |
| Shelf Life | Store unopened in original packaging, dry and cool, away from UV. Shelf life approximately two years from production date. |
The evaporative emission line connector body is a production geometry in which conditioned carbon-fibre-filled PA12 is specified instead of glass-filled PA6 or PA66 because the PA12 matrix maintains lower equilibrium water absorption and better low-temperature notched impact after underbonnet humidity cycling. The carbon fibre weight fraction is fixed at 15 wt% in the as-received Grilamid LC-15H black feedstock; downstream moulders do not add further carbon fibre. The processing feedstock ratio is 100 wt% neat compound, and regrind from sprues and runners is capped at 15 wt% only after the chosen screw and granulator are shown not to reduce notched Charpy impact below the OEM acceptance limit. Drying in a desiccant dryer at 80 °C for 4–8 h to 0.10 wt% residual moisture is mandatory before plastification because absorbed moisture can hydrolyse the melt and create surface splay. Injection moulding is conducted at a melt temperature of 240–260 °C, a mould temperature of 60–80 °C, and back pressure of 30–50 bar; a single edge gate or hot-tip valve gate is preferred because the fibre-rich skin separates from the core at low fill velocity. Weld lines formed when two melt fronts recombine around a hose-barb bore are a known failure location in burst and pull-off testing, so the toolmaker must place the weld line away from the undercut root or use a valve-gated design that creates a single flow front. After demoulding, parts are conditioned at 23 °C and 50% RH until gravimetric moisture uptake plateaus; plateau time is section-dependent and is not fixed solely by granule moisture data. The component set includes fuel sender unit mounting flanges, quick-connector bodies, and evaporative emission line clips. Compliance anchors include SAE J2260 for non-metallic fuel-system tubing connections, ISO 6722-1 for low-voltage cable retention where a sensor harness is clipped to the connector, and mechanical validation by ISO 527-2 for tensile modulus and ISO 179-1/1eA for conditioned notched Charpy. End-use fuel contact assessment may require additional permeation testing under vehicle evaporative emission regulations; published data for this specific carbon-fibre-filled PA12 grade in a complete quick-connector assembly is limited and must be generated by the tier supplier for the final fuel system.
In semiconductor front-end handling and PCB automation, the carbon-fibre network must produce a dissipative surface rather than an insulative or fully conductive one, generally between 10^3 Ω and 10^8 Ω when tested to IEC 61340-5-1:2016 and ANSI/ESD S20.20-2014. The grade is fed neat at 100 wt%, and regrind is limited to 10–20 wt% because granulator fines and shortened fibre fragments alter both surface charge decay rate and bulk resistivity in ways that cannot be predicted from virgin granule data. Charge decay from 1000 V to 100 V is measured per IEC 61340-2-3 on production-representative plaques, not on polished laboratory samples, because the tool-steel skin layer affects fibre distribution. Processing uses a low-compression general-purpose screw of 20:1 L/D, a reverse-taper nozzle, and a shot/barrel capacity ratio above 30% but below 70% to control residence time. Melt temperature is held at 230–250 °C; higher temperatures increase the risk of matrix oxidation and black speck, while lower temperatures increase frozen-in stress and warp in large flat carriers. Tool temperature is maintained at 60–80 °C with turbulent water flow, and cooling circuits are balanced so that a carrier does not develop anisotropic shrinkage at its perimeter ribs. The processed component set includes wafer transport cassettes, PCB transport rails, and pick-and-place end-of-arm nests. Surface resistivity is checked by ASTM D257-14 or IEC 60093 at 100 V DC; mechanical acceptance uses flexural modulus by ISO 178 and tensile modulus by ISO 527-2. Electrical and electronic component use also requires assessment under RoHS 2011/65/EU for lead, mercury, cadmium, hexavalent chromium, PBB, and PBDE; the black carbon-filled PA12 grade is not formulated with these heavy-metal stabilisers, but end-users must verify final assembly compliance. Published data for this specific grade at cleanroom relative humidity below 20% RH is limited, so end-users must verify charge decay on the actual part rather than relying on a datasheet generated under ambient office conditions.
Pneumatic actuator end-caps, solenoid valve housings, and instrumentation enclosures in solvent-handling process bays and Zone 2 hazardous areas are moulded from the same carbon-fibre-filled PA12 because the non-ionic conductive path is less dependent on moisture than a carbon-black antistatic layer under ATEX directive 2014/34/EU. The addition ratio is 100 wt% neat feedstock; halogenated flame-retardant masterbatches are not recommended because their carrier resins and metal-oxide synergists can disrupt the percolated carbon-fibre network and raise surface resistivity above the target limit of 10^6 Ω. If a flame-retardant version is required, the moulder must re-qualify each batch by measuring resistance to earth after conditioning because published data for this specific formulation with flame-retardant additives is limited. The downstream production sequence includes desiccant drying to 0.10 wt% residual moisture, injection moulding with a fill time of 1.5–2.5 s, and holding pressure limited to the minimum required to prevent sink marks in ribbed bosses; excessive holding pressure increases fibre alignment along the flow path and may reduce resistance transverse to the melt direction. Post-mould annealing at 120 °C in an inert oven is used only when tight tolerances below ±0.05 mm require residual stress relaxation, and annealing time is determined by section thickness. Finished components in this segment include solenoid valve housings, instrument enclosures, and hazardous-area cable glands. Compliance is assessed under IEC 60079-0:2017 for equipment group II and temperature class evaluation; surface resistance is measured at 100 V DC by IEC 60093, and low-temperature impact is verified by ISO 179-1/1eA after conditioning. The carbon-fibre-filled PA12 is not a substitute for flameproof metal enclosures tested to IEC 60079-1; its role is limited to non-transmissive covers, external fittings, and components within a type-tested enclosure system.
In high-speed power transmission components, the 15 wt% carbon fibre loading increases modulus and reduces creep under cyclic torque, while the PA12 matrix gives lower saturated moisture uptake than PA6 or PA66 and therefore less dimensional movement in humid actuator housings. The recommended feedstock ratio is 100 wt% neat compound; a low-friction masterbatch may be introduced at 2 wt% only after block-on-ring or gear-transmission wear testing to ISO 7148-2 or an OEM-specific method because published data for this specific grade with PTFE or silicone oil masterbatches is limited. Moulders use a 25:1 L/D three-zone screw, a shut-off nozzle, and a sequential valve-gate system that fills from two or three gates in sequence so that knit lines are not located at loaded tooth roots. Tool temperature is held at 60–80 °C to produce a resin-rich skin over the carbon-fibre core; injection speed is set high enough to avoid jetting at the gate. Post-ejection conditioning is conducted at 40 °C and 80% RH until dimensional change stabilises against the part tolerance band; this conditioning step is critical because dry-as-moulded PA12 carbon-fibre parts have higher tensile modulus but lower notched impact energy than conditioned parts. Final tooth geometry is verified by gear roll scanning or coordinate measuring machine inspection, not only by weight or fill. Produced part types include cycloidal gears, cam followers, and gerotor pump rotors. Mechanical acceptance is based on tensile modulus by ISO 527-2, flexural strength by ISO 178, and heat deflection temperature by ISO 75-1/-2 at 1.8 MPa. Continuous service above the PA12 softening region near 90 °C must be assessed for load-induced self-heating because the carbon-fibre network increases thermal conductivity but does not eliminate the matrix thermoplastic response.
Cold-weather sports hardware and outdoor load-adjustment clamps use the conditioned grade because the PA12 matrix tends to retain ductile failure at low temperature better than short-chain PA6 or PA66 when part thickness is held below roughly 3 mm. The addition ratio is 100 wt% neat compound; regrind is rejected for load-bearing parts that must pass EN 12275:2013 connector tests or UIAA 121 anchor tests because fibre attrition from regranulation can shift the failure mode from tough ductile tearing to brittle cracking at the same wall section. Moulding uses a short flow length, a wide gate land, and a mould temperature of 80 °C to promote fibre wetting and reduce exposed fibre ends at the surface. After ejection, parts are conditioned at 70 °C and 62% RH until moisture uptake is verified by weight gain; dry-as-moulded carbon-fibre-filled PA12 parts typically show lower impact energy than conditioned parts, and the exact gain for this grade must be established on the production tool because datasheet values from standard plaques do not capture rib-wall thickness interactions. End items include harness adjustment buckles, quick-release closure levers, and attachment hooks for outdoor equipment. Material acceptance standards include ISO 527-2 for tensile properties, ISO 179-1/1eA for notched Charpy after conditioning, and ISO 4892-2 for xenon-arc UV exposure where black colour is used to limit photodegradation. Even with carbon black and carbon fibre present, long-term UV exposure causes surface microcracking and gloss loss; end-users must run component-level UV weathering because material-level UV data cannot predict the stress concentrations at load-bearing holes and retention barbs.
For exposed marine deck cable clamps, cable glands, and junction-box mounting feet, the conditioned carbon-fibre-filled PA12 is selected when the assembly must survive repeated salt spray without losing strap retention force or impact resistance. The feedstock ratio is 100 wt% neat compound; a UV-stabilised black concentrate is limited to 2 wt% maximum because higher concentrate loadings dilute the carbon fibre volume fraction and alter shrinkage anisotropy in a way that cannot be corrected by tool steel changes alone. Production uses injection moulding with a melt temperature of 230–250 °C and a mould temperature of 70–80 °C; the tool must have corrosion-resistant ejector pins and hardened slides because carbon fibre grades produce more tool wear than unfilled PA12. Parts are conditioned after demoulding to equilibrium moisture at 23 °C and 50% RH, and salt-spray resistance is evaluated on finished parts by ISO 9227 neutral salt spray with an exposure period that the end-user sets from deck service conditions; published data for this specific grade after 1000 h marine salt spray is limited. The final component set includes deck cable clamps, marine cable glands, and junction-box mounting feet. Mechanical acceptance includes tensile modulus by ISO 527-2, flexural strength by ISO 178, and notched Charpy impact by ISO 179-1/1eA after conditioning; surface resistance is measured by IEC 60093 only where static accumulation on non-metallic cable glands is a design concern. Because marine classification societies require system-level fire and material certifications, the material datasheet alone is not sufficient for type approval; the moulder must submit the moulded part and assembly to the relevant society for additional testing.
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EMS-Grivory Grilamid LC-15H black Nylon 12, 15% Carbon Fiber Filled, Conditioned is a heat-stabilised polyamide 12 compound containing 15% carbon fibre by weight. The grade code LC-15H identifies the EMS polyamide 12 base, the carbon-fibre reinforcement at 15 wt%, and a heat-stabilised formulation. The conditioned property set indicates that test specimens have been moisture-conditioned to accelerated equilibrium in accordance with ISO 1110, which is intended to simulate the moisture uptake obtained after extended exposure to 23 °C and 50% relative humidity. This conditioned state is not a surface treatment or an impact-modifier package. It is a controlled moisture-uptake protocol that plasticises the amorphous polyamide phase while the carbon-fibre network continues to control creep, shrinkage, and electrical conductivity.
Conditioned values should be used when a moulded part reaches moisture equilibrium before load application. The table below lists typical dry-as-moulded and conditioned values reported for EMS-Grivory Grilamid LC-15H black. These values are representative engineering data, not lot-specific release limits. Absorbed water disrupts interchain hydrogen bonding in the PA12 matrix, so tensile modulus and tensile strength decrease in the conditioned state, while elongation at break and notched impact strength increase slightly. The carbon fibre is largely insensitive to moisture, which limits the magnitude of the dry-to-conditioned shift relative to unfilled polyamide.
| Property | Test method | Dry as moulded | Conditioned |
|---|---|---|---|
| Density | ISO 1183-1 | 1.12 g/cm³ | 1.12 g/cm³ |
| Tensile modulus, 1 mm/min | ISO 527-1/-2 | 13000 MPa | 9000 MPa |
| Tensile strength at break | ISO 527-1/-2 | 150 MPa | 105 MPa |
| Elongation at break | ISO 527-1/-2 | 3.0% | 5.0% |
| Flexural modulus | ISO 178 | 12000 MPa | 9000 MPa |
| Charpy notched impact strength, +23 °C | ISO 179-1/1eA | 6.0 kJ/m² | 7.0 kJ/m² |
| Heat deflection temperature, 1.80 MPa | ISO 75-1/-2 | 160 °C | 160 °C |
At 15% carbon-fibre loading, the dry-to-conditioned tensile modulus drop is 4000 MPa, or roughly 31% relative to the dry value. Tensile strength falls by approximately 30%, while Charpy notched impact strength increases from 6.0 kJ/m² to 7.0 kJ/m². This shift is smaller than would be observed in an unfilled PA12 or a PA6/PA66 compound because the low equilibrium moisture content of PA12 limits water-induced plasticisation. For comparison, PA12 absorbs about 0.7% moisture at 23 °C and 50% relative humidity under ISO 62, whereas PA6 can absorb 2.5–3.0% under the same conditions. The carbon-fibre network therefore keeps conditioned modulus above that of many unreinforced polyamides and supports design calculations that rely on dimensional stability after moisture uptake.
Because the carbon-fibre content raises melt viscosity and abrasive wear on machine components, processing requires hardened screw elements, barrel surfaces, and non-return valve components. The granules should be dried to a residual moisture content below 0.1% using a dry-air drier at 80 °C for 4–6 h when storage relative humidity has exceeded 60%. A melt temperature of 250–280 °C and a mould temperature of 80–120 °C are typical for injection moulding. Lower mould temperatures reduce crystallinity and can stabilise post-mould shrinkage, but may also reduce the surface consistency of the conductive carbon-fibre network. Screw rotation speed and back pressure should be limited to avoid fibre attrition. Excessive shear at gates or check valves can shorten fibre length, raise the percolation threshold, and create local resistivity variations. Mould designs with direct or edge gates generally preserve fibre length better than pin-point gates because of lower local shear rates. On hardened tool steel and bimetallic barrel liners, wear from carbon fibre is manageable, but unhardened screws can show measurable flight wear after relatively short production runs.
Typical moulded parts include electrostatically dissipative transport trays for electronic assemblies, fuel-line clips, cable conduits, connector housings, and low-load pump wear components where low moisture uptake and chemical resistance are required. The static-dissipative behaviour is derived from the carbon-fibre network rather than a moisture-dependent antistatic additive, so conditioning does not remove conductivity. However, weld-line regions and gate locations must be reviewed because fibre orientation and knit lines can interrupt the conductive network. Surface resistivity at a weld line can be several orders of magnitude higher than in flow-aligned material.
At 15 wt% carbon fibre, the compound displays volume resistivity in the static-dissipative range. Reported values for this grade typically fall between 10^3 Ω·m and 10^5 Ω·m according to IEC 62631-3-1, with surface resistivity below 10^6 Ω under IEC 62631-3-2. These levels make the material suitable for housings, covers, and transport trays where electrostatic discharge must be drained without using a metallic component. The conductive network is not reliant on ambient moisture for electron transport, but moisture-induced swelling may slightly increase contact resistance at fibre-fibre junctions. Because 15% loading sits close to the through-thickness percolation threshold for short carbon fibre in PA12, conductivity is orientation-dependent. Gate location, flow direction, and wall thickness can all produce measurable differences in surface resistivity across a single moulded part.
For conductive polymer applications, the material should not be regarded as a high-conductivity replacement for metal. It is intended for static dissipation and controlled charge bleed-off, not for carrying high current. If a part requires surface resistivity below 10^3 Ω in all regions, including weld lines, a higher carbon-fibre loading or an alternative conductive filler may be required. Published data for this specific configuration is limited for high-current and high-voltage applications, and end-use electrical testing under the actual assembly geometry is required.
Compared with a 15% carbon-fibre-filled PA6 or PA66, LC-15H has a lower equilibrium moisture uptake and a smaller dry-to-conditioned shift in modulus and dimensions. At 50% relative humidity, PA12 absorbs approximately 0.7% moisture, whereas PA6 absorbs 2.5–3.0% under ISO 62. In water at 23 °C, PA12 typically saturates at about 1.5%, while PA6 can reach 9–10%. This difference reduces dimensional change in electrical connectors, cable conduits, fuel-line clips, and snap-fit assemblies exposed to humid air or intermittent condensation. Carbon fibre does not negate the matrix property; it reduces the absolute swelling strain by adding a non-swelling reinforcement phase.
For applications requiring resistance to zinc chloride salt solutions, PA12 is less susceptible to stress-cracking than PA6 or PA66. The heat-stabilised PA12 matrix also provides better low-temperature impact and lower density than equivalent PA6/PA66 carbon-fibre compounds. When chemical exposure is expected, the part should be tested according to ISO 175 with the production fluid mixture because carbon-fibre-filled surfaces can retain fuel or oil constituents differently from unfilled PA12. In fuel-contact applications, PA12 is widely used for vapour and liquid lines, but the specific fuel blend, temperature, and weld-line placement must be validated before series release.
The upper use temperature of Grilamid LC-15H black remains governed by the PA12 melt point of 178 °C under ISO 11357-1/-3 and by the heat-stabilisation package. Continuous load-bearing use is not recommended above the heat deflection temperature of 160 °C at 1.80 MPa. Short-term excursions can approach the melt point but may cause irreversible deformation under load. The carbon fibre increases creep modulus and reduces creep strain, but it does not prevent oxidative degradation of the polyamide backbone at elevated temperatures. For underhood components, the maximum continuous air temperature is typically below 120–130 °C depending on load, peak temperature, and chemical exposure. Published data for this specific configuration is limited for long-term ageing above 130 °C, and oxidative embrittlement can occur before visible softening.
The compound is rated HB under UL 94, so it is not a flame-retarded grade. If the application requires V-0 or V-2 rating, a different product should be selected, or an external flame-retardant strategy must be validated. Chemical incompatibilities include strong acids, oxidising media, and continuous hot water above 80 °C in oxidative environments. The compound should not be combined with amine-based additives that accelerate hydrolytic degradation at melt-processing temperatures. Before use in fuel-contact or high-humidity automotive systems, the part should be tested under the actual assembly load, weld-line configuration, and temperature profile rather than relying solely on dry-as-moulded specimen data.
Because carbon fibres orient along the flow direction, moulding shrinkage is anisotropic. Flow-direction moulding shrinkage is typically below 0.1%, while transverse shrinkage approaches 0.5% when measured according to ISO 294-4. The anisotropy must be accounted for in tool design; gate location changes the shrinkage tensor more strongly than the moisture state. For close-tolerance parts, the tool should be cut with allowance for both shrinkage directions, and the processor should verify dimensions on conditioned parts, not only dry-as-moulded samples. The low moisture uptake of PA12 helps maintain dimensional stability in service, but moulded-in stress and fibre orientation can still produce post-mould distortion after conditioning.
