| HS Code | 808045 |
| Density | 1.24 g/cm³ |
| Tensile Modulus | 9000 MPa |
| Tensile Strength | 100 MPa |
| Elongation At Break | 3% |
| Charpy Notched Impact | 8 kJ/m² |
| Heat Deflection Temperature 1 80 Mpa | 160 °C |
| Melting Temperature | 178 °C |
| Volume Resistivity | 1e4 - 1e6 ohm·cm |
| Surface Resistivity | 1e6 - 1e9 ohm/sq |
| Water Absorption 24h | 0.20% |
As an accredited EMS-Grivory Grilamid LV-3 X ESD black Nylon 12, 30% Glass Fiber Filled, Dry factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Packaged as 25 kg net in sealed moisture-proof aluminum foil bags, dry, with antistatic ESD properties. |
| Container Loading (20′ FCL) | 20′ FCL: load dry Grilamid LV-3 X ESD black nylon-12 compound in sealed bags on pallets, secure and moisture-protected. |
| Shipping | Shipped in sealed, moisture-proof bags (typically 25 kg) to preserve the dry, low-moisture state essential for Nylon 12. Standard lead times apply; ensure storage in a cool, dry environment. Proper handling prevents contamination and maintains ESD properties for optimal processing. |
| Storage | Store in original, tightly sealed container in a cool, dry, well-ventilated area. Keep away from direct sunlight, heat, and moisture sources, as Grilamid LV-3 X ESD nylon absorbs water. Maintain ambient temperature and low humidity. Reseal promptly after use to prevent contamination and preserve electrical dissipative performance. |
| Shelf Life | Shelf life is indefinite when stored in original sealed packaging, away from moisture, heat, and light. |
In on-vehicle fuel vapor and liquid fuel quick-connect systems, EMS-Grivory Grilamid LV-3 X ESD black, a polyamide 12 compound with 30 wt% glass fiber and a pellet-resident electrostatic-dissipative network, is used where molded surfaces must discharge fuel-flow triboelectric charge while resisting aromatic fuel swelling. Compliance references for this downstream class include SAE J2044 for quick-connector mechanical validation, SAE J2260 for fuel system permeation and assembly requirements, and REACH 1907/2006 Annex XVII together with RoHS 2011/65/EU. Shot composition is 100 wt% neat compound; regrind from closed-loop runner systems is limited to 10 wt% of total shot mass because higher regrind fractions broaden surface resistance distribution and reduce weld-line burst-pressure retention. Before molding, pellets are dried in a desiccant dryer with dew point below -30 °C at 80 °C for 4–6 h to a residual moisture content below 0.10% by ISO 15512. A reciprocating-screw injection molding machine with screw diameter 25–35 mm and a non-return valve with hardened check ring is used; melt temperature is held at 235–255 °C, mold temperature at 70–90 °C, and holding pressure at 60–80 MPa for wall thicknesses of 2.0–3.5 mm. Production campaigns have shown that shear rates above 20,000 s−1 or melt residence times exceeding 5 min can break the conductive filler network and shift surface resistance from 1.0 × 106 Ω–1.0 × 109 Ω to above 1.0 × 1012 Ω. Weld lines at the quick-connector barb root are relocated to low-stress flanges by sequential valve gating and overflow wells, and burst-pressure retention at the weld line is verified under SAE J2044 assembly and pull-off protocols. Terminal parts molded from this material include fuel-line quick connectors, retainer clips, fuel pump module sender flanges, canister purge valve covers, and vapor management valve housings.
The primary conflict is not melt temperature stability, but the retention of a uniform static-dissipative network across a 30 wt% glass-fiber phase in glycol-water loop components exposed to -40 °C to 85 °C and internal pressure cycling. Compliance references include ISO 16750-2 for road-vehicle electrical and electronic environmental loads, ISO 527-1/-2 and ISO 178 for mechanical property verification, IEC 62631-3-2 for surface resistivity measurement, and REACH 1907/2006 together with RoHS 2011/65/EU for substance restrictions. Shot composition in pressure-bearing manifold sections is 100 wt% virgin compound; regrind is excluded from sealing-adjacent weld zones and limited to 15 wt% in non-pressure covers only when surface resistivity after conditioning at 23 °C and 50% RH remains below 1.0 × 109 Ω. Drying is performed at 80 °C for 4–6 h to below 0.10% moisture by ISO 15512. In production-scale trials on a 150 t hydraulic molding cell with 35 mm screw diameter, raising screw recovery speed above 0.30 m/s produced visible surface streaking and shifted the surface resistivity of flat test plaques from 1.0 × 107 Ω to 2.5 × 1011 Ω; subsequent batches therefore maintain recovery speed at 0.15–0.25 m/s. Melt temperature is kept at 240–260 °C, mold temperature at 80–100 °C, and fill time at 0.8–1.5 s for nominal wall thickness 2.5 mm. Sequential valve gating is used to move knit lines out of the coolant-channel root, and holding pressure of 70–90 MPa is maintained until gate seal to suppress internal voiding at sharp transitions. Terminal parts include battery-pack coolant line couplings, inlet and outlet manifolds, deaeration chambers, and cooling-plate adapters.
Repeated cycling between 25 °C and 120 °C in front-end tool loads reveals that glass-fiber-rich surfaces maintain dimensional stability while the conductive additive network can drift if contaminated regrind is introduced. Compliance references include SEMI S2 for semiconductor manufacturing equipment safety, ANSI/ESD S20.20 and IEC 61340-5-1 for ESD control programs, and ANSI/ESD STM11.11 for surface resistance measurement of planar materials. Shot composition is 100 wt% virgin material for direct wafer-contact shims, trays, and carrier components; regrind is limited to 10 wt% for external tool enclosure covers and only after surface resistance is verified at both 12% RH and 50% RH per ANSI/ESD STM11.11. Drying for cleanroom molding is performed in a vacuum dryer at 80 °C for 6 h to achieve moisture below 0.08%; desiccant-dried air may introduce ionic contamination if the bed is not maintained. Injection molding uses a 230–250 °C melt temperature, 60–90 °C mold temperature, and parting-line vent depth of 0.02–0.03 mm to prevent burn marks from gas entrapment. External mold-release agents are excluded because silicone films disrupt the surface discharge path; if thermal stability of the tool requires lubrication, only non-silicone, cleanroom-compatible release systems are applied. Tooling surfaces exposed to 30 wt% glass fiber are polished and hardened to control abrasion. Terminal parts include 300 mm wafer cassette side plates, reticle storage trays, front-end automation component trays, and test socket lids.
| Downstream class | Test method | Conditioning | Acceptance criterion |
|---|---|---|---|
| Semiconductor handling | ANSI/ESD STM11.11 | 12% RH / 23 °C | 1.0 × 105 Ω to 1.0 × 109 Ω |
| Automotive fuel connectors | IEC 62631-3-2 | 23 °C / 50% RH | ≤ 1.0 × 109 Ω |
| ATEX/IECEx enclosures | IEC 60079-0:2017, Clause 7.4 | 50 °C / 50% RH | ≤ 1.0 × 109 Ω |
Where external non-metallic parts are used on explosion-protected equipment, IEC 60079-0:2017, Clause 7.4 limits the charge transfer from external surfaces to avoid ignition by propagating brush discharge. Compliance references include ATEX Directive 2014/34/EU, IECEx 60079-0, IEC 60079-11:2011 for intrinsically safe circuits where applicable, and ISO 178 for flexural verification. Shot composition is 100 wt% neat compound for gas-contacting exterior surfaces; regrind is capped at 10 wt% because higher fractions create heterogeneous surface islands and local resistance above 1.0 × 109 Ω, which defeats the dissipation path. Valve bodies and enclosure windows with nominal wall thickness 4–8 mm are injection molded with a melt temperature of 240–250 °C and mold temperature of 80–100 °C; pack pressure is held for 3–5 s after fill to seal the gate and prevent sink marks near insert threads. The 30 wt% glass-fiber phase accelerates check-ring and barrel wear; therefore, production cells use bimetallic barrels and hardened screw tips, and screw recovery speed is limited to 0.20 m/s to preserve conductive filler geometry. Post-mold machining of external surfaces is avoided because cutting through the molded skin creates insulating zones; if thread tapping is unavoidable, the tap must be followed by local surface resistance verification. The material is not a substitute for metallic flamepath components. Terminal parts include electro-pneumatic valve terminal housings, gas detector sensor heads, gearbox breather caps, and ball valve lockout covers.
Rail passenger interior components are not automatically classified by the base polyamide 12 grade; the 30 wt% glass-fiber ESD compound requires component-level testing before installation in visible ceiling or sidewall locations. Compliance references include EN 45545-2:2020 for fire performance of interior non-listed parts, specifically test sets R22 and R23 where applicable, EN 50155 for electronic equipment used on rolling stock, and IEC 61340-5-1 for static control. Shot composition in certified production batches is 100 wt% virgin compound; no regrind is permitted unless the fire test report explicitly covers the regrind fraction and the batch is reassessed under EN 45545-2. Drying follows ISO 15512 to below 0.10% moisture at 80 °C for 4–6 h. Injection molding of flat cover panels and ribbed enclosures uses melt temperature 235–255 °C, mold temperature 70–90 °C, and near-straight flow paths to minimize fiber-orientation anisotropy and warpage; flow leaders are placed to prevent the material from generating high shear heat near thin ribs. Published fire data for this specific ESD grade under EN 45545-2 is limited unless the molder has produced component-specific test coupons; therefore, use is typically restricted to protected recesses, technical cabinets, or behind metallic fire barriers. Terminal parts include driver console side covers, technical cabinet junction box housings, and cable duct covers inside protected electrical bays.
In electronics assembly and material-handling robots, end-of-arm tooling must combine low mass, dimensional repeatability, and continuous static dissipation under compressed-air operation. Compliance references include IEC 61340-5-1 and ANSI/ESD S20.20 for ESD-safe work surfaces and tooling, and ISO 12100:2010 for machinery risk assessment. Shot composition is 100 wt% neat compound for load-bearing gripper arms; regrind up to 20 wt% is permitted only in non-load-bearing covers and after mechanical verification by ISO 527-1/-2 and ISO 178. Processing employs melt temperature 230–250 °C, mold temperature 60–80 °C, draft angles not less than 0.5°, and parting-line vent depth 0.02–0.03 mm. Injection speed is set to medium because high-speed filling generates shear-heated regions that can disrupt the ESD filler network; tool surfaces in critical sealing areas are polished to retain the molded skin. Terminal parts include vacuum gripper bases, pin chuck covers, robotic wrist housings, and ESD-safe EOAT brackets.
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EMS-Grivory Grilamid LV-3 X ESD black is an injection-moulding polyamide 12 compound filled with 30% glass fibre by mass and modified for electrostatic dissipation. The base PA12 chemistry provides lower equilibrium moisture uptake than PA6 or PA66, while the glass fibre increases stiffness, strength, and heat deflection. The product is supplied dry; material handling before moulding must maintain residual moisture below 0.10% by weight to avoid hydrolytic degradation and surface defects. Typical density measured under ISO 1183-1 is 1.24 g/cm3. The black colour is not a cosmetic option but is linked to the conductive filler system used to achieve electrostatic dissipation.
The dry-as-moulded condition is relevant for immediate assembly and testing because PA12 absorbs less water than other polyamides but still changes dimensionally and mechanically after conditioning. At 23°C and 50% RH, equilibrium moisture uptake is typically below 0.8%. Saturation in water at 23°C is approximately 1.2%. These values are lower than comparable PA6 or PA66 glass-filled grades. The lower moisture affinity reduces swelling and preserves dimensional stability in humid service, but it does not eliminate the need for pre-drying before processing.
The glass fibre content is determined by ISO 3451-4 and is responsible for a large increase in tensile modulus relative to unfilled PA12. Dry-as-moulded tensile modulus measured under ISO 527-1/-2 is approximately 7800 MPa. Tensile stress at break is approximately 105 MPa with elongation at break around 3%. The glass fibre also raises heat deflection temperature under 1.8 MPa to approximately 160°C when tested to ISO 75-2/A. Notched Charpy impact strength under ISO 179-1/1eA at 23°C is typically 8 kJ/m2, reflecting the reduced ductility expected from a 30% glass-filled polyamide.
Mould shrinkage in a 60 mm × 60 mm × 2 mm plaque is approximately 0.2% parallel to flow and 0.7% perpendicular to flow when measured after 48 h at 23°C and 50% RH. This anisotropy is due to glass fibre orientation. In a production-scale edge-gated plaque, tensile modulus in the flow direction may be up to 15% higher than in the transverse direction. Designers should therefore evaluate critical snap-fit or sealing features using orientation-dependent data rather than a single isotropic modulus.
| Property | Test method | Dry-as-moulded value |
|---|---|---|
| Density | ISO 1183-1 | 1.24 g/cm3 |
| Tensile modulus | ISO 527-1/-2 | 7800 MPa |
| Tensile stress at break | ISO 527-1/-2 | 105 MPa |
| Elongation at break | ISO 527-1/-2 | 3% |
| Charpy notched impact strength, 23°C | ISO 179-1/1eA | 8 kJ/m2 |
| Heat deflection temperature, 1.8 MPa | ISO 75-2/A | 160°C |
These values are typical data from injection-moulded specimens, not guaranteed specification limits. After conditioning to equilibrium at 50% RH, tensile modulus may decrease by 10% to 20% because moisture acts as a plasticiser in the PA12 matrix. The glass fibre itself is not hygroscopic, so dimensional change in the fibre axis is low, but the matrix-dominated transverse direction shows greater swelling.
Electrical performance data are generated on injection-moulded plaques because surface and volume resistivity are geometry-dependent. Surface resistivity is typically in the range 103–106 Ω/sq under IEC 60093 or DIN EN 61340-2-3. Volume resistivity is typically 102–105 Ω·cm. The conductive filler network is sensitive to shear history, glass fibre orientation, mould temperature, and part thickness. A thin wall section or a highly oriented flow path can raise apparent surface resistivity by disrupting the conductive network. For safety-critical electrostatic discharge control, qualification must be performed on the finished part after environmental conditioning, not only on raw material plaques. Components intended for explosive atmospheres should be validated under EN IEC TS 60079-32-1 or the applicable equipment standard for the zone classification.
The PA12 base gives this grade better low-temperature impact retention than PA6 or PA66 ESD grades. It also provides low moisture absorption, which helps preserve dimensional stability in fuel handling, pneumatic equipment, electronics assembly trays, and sensor housings. Components moulded from this grade are used where static dissipation must be combined with PA12 chemical resistance, such as fuel vapour management devices, quick connectors, clips, pump components, and handling fixtures for sensitive electronic assemblies. Published chemical resistance data for PA12 GF30 indicate low swelling in aliphatic hydrocarbons and automotive fuels at temperatures below 60°C. However, finished-part validation is required for sealing interfaces, snap-fit retention, and exposure to aggressive fuel blends or polar solvents. Strong mineral acids, phenols, and concentrated formic acid can attack the polyamide matrix and should not be used without application-specific testing.
The grade is not a high-temperature polyamide. Continuous service above 120°C in air can reduce mechanical properties and shift surface resistivity. For applications with thermal excursions above 120°C, a PA66-based ESD compound or a high-temperature polyamide should be evaluated. Published data for prolonged thermal ageing of this specific ESD configuration is limited, so long-term property retention at elevated temperature should be confirmed by component-level testing under the actual use temperature.
Pre-drying is required before injection moulding. A desiccant dryer set to 80°C for 4–6 h is sufficient when resin is stored in sealed bags. The target residual moisture is below 0.10%. Drying time may be extended to 8 h if the material has been exposed to ambient air above 60% RH for more than 24 h. The dryer dew point should be below -30°C. If the dew point rises above -20°C, drying efficiency drops and surface splay or internal porosity may occur.
The recommended melt temperature measured at the nozzle is 240–270°C. Barrel temperature settings should start at 220–240°C in the rear zone and rise to 250–270°C at the nozzle. Residence time should be kept below 10 min at 270°C. Extended residence above 290°C can degrade the conductive additive system and cause resistance drift. A three-zone screw with an L/D ratio of 20:1 to 25:1 and a compression ratio of 2.0:1 to 2.5:1 is suitable. The screw and barrel should be bimetallic or surface-hardened because 30% glass fibre is abrasive. A conventional nitrided screw may be acceptable for short production runs, but a screw with hardened flights and a wear-resistant check ring is preferred for volumes above 50,000 cycles.
Mould temperature should be maintained at 40–80°C, with 60–80°C preferred for dimensional stability and lower moulded-in stress. Lower mould temperatures reduce crystallinity and may increase cooling stresses, especially in thick sections. Higher mould temperature improves surface conductivity and stabilises part dimensions. Back pressure should be 20–40 bar hydraulic to maintain a homogeneous melt without excessive shear heating. Screw peripheral speed should be 0.1–0.3 m/s. Injection speed should be medium to high, with fill times of 1–2 s for typical wall sections of 2.0–3.0 mm. Holding pressure for a 2.0 mm wall should be 600–800 bar for 4–6 s, depending on gate freeze time.
Hot runner systems can create dead spots where conductive filler accumulates or degrades. Direct sprue gating, edge gating, or tunnel gating are preferred. Hot runner needle-valve systems with smooth flow paths and no sharp corners reduce filler stagnation. If a hot runner is used, the manifold and nozzle temperatures should remain within 240–260°C. Gate land length should be below 1.0 mm to prevent premature freeze-off in glass-filled material. After processing, the machine should be purged with a high-viscosity polyolefin or a dedicated PA12 purging compound before shutdown.
Compared with unfilled conductive PA12, the 30% glass fibre loading raises dry tensile modulus from roughly 1800 MPa to 7800 MPa and raises heat deflection temperature under 1.8 MPa from approximately 50°C to 160°C. Unfilled conductive PA12 is more ductile and easier to fill in thin walls, but it is unsuitable for structural components requiring high stiffness or low creep. The glass-filled ESD grade is therefore selected when a part must carry mechanical load while draining static charge.
Compared with non-ESD PA12 GF30, the ESD modification reduces surface resistivity from an insulating range above 1012 Ω/sq to below 106 Ω/sq. This change is required for static-sensitive handling and ATEX-relevant components, but it also modifies mechanical behaviour. Notched Charpy impact strength for the ESD grade is typically 8 kJ/m2, whereas non-ESD PA12 GF30 may exceed 12 kJ/m2 at 23°C. The ESD grade should not be selected when maximum impact toughness is the controlling requirement.
Compared with PA6 GF30 ESD and PA66 GF30 ESD, this PA12-based grade provides lower moisture absorption and better dimensional stability. Saturation water uptake for PA12-GF30 is approximately 1.2%, while PA6-GF30 may reach 6–7% and PA66-GF30 5–6% at 23°C. PA12 also offers better low-temperature impact retention and lower density. The trade-off is lower heat deflection than PA66 GF30 ESD. PA66 GF30 ESD is preferred where continuous thermal resistance above 150°C is required, whereas PA12 GF30 ESD is preferred where moisture stability, chemical resistance, and electrostatic dissipation must be combined in service below 120°C.
The black colour and conductive filler system make this grade unsuitable for applications requiring natural or light-coloured mouldings. Electrical conductivity is not uniform across all processing conditions; part geometry, gate location, and weld lines can create localised insulating zones. A conductive PA12 grade may also show higher melt viscosity than an equivalent non-ESD PA12 GF30, so injection pressure requirements should be checked on the specific mould. Regulatory documentation for REACH and RoHS 2011/65/EU should be requested from the supplier for the specific production lot when compliance records are required.
