| HS Code | 599734 |
| Density | 1.10 g/cm³ |
| Melting Point | 178 °C |
| Tensile Modulus | 3000 MPa |
| Tensile Stress At Break | 45 MPa |
| Tensile Strain At Break | 10% |
| Charpy Impact Strength 23 C | 25 kJ/m² |
| Charpy Notched Impact Strength 23 C | 4 kJ/m² |
| Heat Deflection Temperature 0 45 Mpa | 145 °C |
| Heat Deflection Temperature 1 80 Mpa | 60 °C |
| Vicat Softening Point | 165 °C |
| Density | 1.35 g/cm³ |
| Tensile Modulus | 4000 MPa |
| Tensile Strength At Break | 50 MPa |
| Elongation At Break | 10% |
| Charpy Notched Impact Strength | 3 kJ/m² |
| Ball Indentation Hardness | 140 MPa |
| Melting Point | 178 °C |
| Heat Deflection Temperature 1 8 Mpa | 110 °C |
| Heat Deflection Temperature 0 45 Mpa | 160 °C |
| Water Absorption Saturated At 23 C | 0.6% |
| Mold Shrinkage Parallel | 0.20% |
| Mold Shrinkage Transverse | 0.30% |
As an accredited EMS-Grivory Grilamid L XE 4074 black 9225 Nylon 12, Glass Bead Filled, Dry factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Supplied in sealed 25 kg bags, dry, with product label, batch traceability, and handling safety information. |
| Container Loading (20′ FCL) | 20′ FCL loading for dry, glass-bead-filled Nylon 12 granules, packed in sealed bags on pallets for safe, efficient transport. |
| Shipping | This nylon 12 grade is shipped in sealed, moisture-resistant packaging to maintain its dry state. Transport in dry, ventilated containers, protected from direct sunlight and extreme heat. Avoid prolonged exposure to humidity to prevent moisture absorption. Standard non-hazardous freight handling applies; ensure secure stacking to prevent damage during transit. |
| Storage | Store in the original, unopened container in a cool, dry, well-ventilated area away from direct sunlight and heat sources. Keep tightly sealed to prevent moisture absorption, as this nylon 12 grade is hygroscopic. Recommended storage temperature is below 30°C. Avoid exposure to dust, chemicals, and physical damage. If moisture is absorbed, dry the material thoroughly before processing per supplier guidelines. |
| Shelf Life | Store unopened in original packaging, cool and dry. Shelf life is typically 2 years from manufacture; avoid moisture absorption. |
In automotive fuel vapor management, the substitution of glass bead filled polyamide 12 for mineral-filled polyamide 66 in close-tolerance evaporative emission components is driven by differential moisture regain rather than tensile strength. The compound is processed under ISO 16750-4:2023 for thermal and environmental loading, SAE J1681 for fuel surrogate immersion evaluation, and UL 94 HB at 0.8 mm wall thickness as listed on the supplier datasheet. The production loading strategy is 100% virgin compound for first-shot sealing and snap-fit geometry; clean runner regrind is allowed at 15–20 wt% in non-safety-critical bracketry only, because production-scale molding audits have shown that higher recycled content increases melt viscosity scatter at 260 °C and 1000 s⁻¹ sufficiently to alter fill packing at 0.6 mm locking ribs. The downstream process is electric injection molding with a 25 mm three-zone screw, L/D 20, using a valve-gated hot runner and conformal cooling around the gate region. Barrel set points are 240–275 °C, nozzle temperature is 260–280 °C, and mold temperature is 50–70 °C; pre-drying in a desiccant dryer at 80 °C to ≤0.1% residual moisture is mandatory, with a dew point below −30 °C. At relative humidity above 60%, open containers are returned to sealed storage within 30 min to prevent surface splay. Terminal finished parts include fuel vapor leak detection pump housings, on-board refueling vapor recovery valve bodies, carbon canister solenoid brackets, and fuel level sender flanges.
In vitro diagnostic analyzer platforms use the compound in Class 8 clean room molding cells certified to ISO 14644-1:2015, with manufacturing quality managed under ISO 13485:2016. The compliance boundary includes ISO 10993-1:2018 clause 5.2 for limited-duration, non-invasive contact, and molded surface evaluation by wipe-down chemical resistance testing according to EN ISO 2812-1:2017 against 70% isopropanol, 0.5% quaternary ammonium, and 3% hydrogen peroxide. The addition ratio is 100% virgin compound; regrind is excluded because partially ground sprues from glass bead filled polyamide 12 have been observed in production lots to segregate during drying and create pellet-to-pellet bead concentration variation, which translates into flow-line density differences visible under D65 illumination on SPI A-1 polished cavities. The downstream process is injection molding on a 30 t electric press with a 22 mm screw, L/D 22, and a two-cavity cold runner. Melt temperature is held at 250–280 °C, mold temperature at 60–80 °C, and injection velocity capped at 80 mm/s; higher shear rates orient glass beads near the melt front and generate anisotropic surface reflectance. Drying is executed at 80 °C for 6 h to a residual moisture level of ≤0.08%, because residual moisture above this threshold produces internal voids detectable by micro-CT at 10 µm resolution and plasticizes the surface, lowering local glass transition temperature. Terminal article categories are IVD analyzer base plates, optical stage supports, lens housing brackets, and robotic pipette tip staging racks.
Because modular pneumatic valve islands and air preparation units require flatness across a 250 mm long manifold within 0.15 mm total indicated runout, the glass bead filled polyamide 12 compound is used as a direct substitution for PBT and aluminum base plates. The applicable compliance framework consists of ISO 8573-1:2010 for compressed air purity class, IEC 60529:1989+A2:2013 for enclosure protection up to IP54, and RoHS Directive 2011/65/EU as amended by (EU) 2015/863. The loading ratio is 90–95 wt% virgin compound with 5–10 wt% internal regrind from the same lot, screened through a 1.0 mm mesh to remove oversized glass bead agglomerates that would otherwise block valve gate orifices during holding pressure. The downstream process is injection molding in a 12-cavity hot runner tool with sequential valve gate control and mold temperature maintained at 55–75 °C; screw recovery is set to keep residence time below 8 min at 270 °C, because longer residence produces visible yellowing on black surfaces under D65 illuminant at 10° specular geometry. Barrel set points are 240–275 °C, nozzle temperature 260–280 °C, and injection pressure is adjusted to achieve a screw cushion of 2–4 mm for consistent packing. Pre-drying to ≤0.1% moisture at 80 °C is mandatory. Terminal article types produced include ISO 15407-1 pneumatic valve manifold base plates, filter-regulator-lubricator bodies, solenoid coil capsule housings, and cylinder end-cap sensor brackets.
Low-load automation sensor flanges and encoder disc carriers are manufactured from the glass bead filled polyamide 12 compound where zinc die-casting weight reduction and corrosion resistance are specified without sacrificing black optical absorption. The standards baseline for this industrial automation hardware is ISO 294-4:2018 for molding shrinkage, ISO 291:2008 for standard conditioning, and EN 61131-2:2007 for operational environment of control equipment. The formulation addition ratio is 100% compound; external lubricants are excluded because migration of stearate-based additives onto the surface reduces adhesion of overprinted UV-cured markings. If demolding is insufficient, a silicone-free mold release is applied at 0.2–0.5 wt% of compound feed, but this is permitted only when post-molding plasma cleaning is available. Processing uses a 50 t electric press with an 18 mm screw, L/D 20, and 0.8 mm side gates on a cold runner. Barrel temperatures are 235–270 °C across zones with nozzle at 255–275 °C, and mold temperature is 45–65 °C to maximize crystallinity at brass insert interfaces. Holding pressure of 70–90 MPa is applied for 4–6 s to reduce sink marks around threaded inserts; this is necessary because glass bead filled compounds show lower post-mold shrinkage but still require packing at thin ribs. Drying to ≤0.1% residual moisture at 80 °C is performed before molding. Terminal components are encoder disc carriers, proximity sensor flanges, laser triangulation sensor housings, and camera mounting plates for robotic end-of-arm tooling.
Where repeated low-temperature impact after UV weathering drives replacement of unfilled polyamide 6 in non-load-bearing contact surfaces, the glass bead filled polyamide 12 compound is used in alpine touring binding toe components and snowshoe binding plates. The regulatory and performance set is drawn from ISO 13992:2019 for touring ski bindings, EN ISO 4892-2:2013 for xenon arc weathering, and REACH Regulation (EC) No 1907/2006 for polycyclic aromatic hydrocarbon restrictions. The blend ratio is 100% compound with no post-molding blending; if color adjustment is required, carbon black masterbatch on a polyamide 12 carrier is added at ≤1.0 wt% to maintain uniform surface resistivity without altering the UL 94 HB rating. The downstream production process is injection molding using a 110 t hydraulic press, 35 mm three-zone screw, L/D 20, and a two-plate cold-runner mold. Melt temperature is 240–275 °C, mold temperature 40–60 °C, and barrel residence time is limited to 6 min; thermal oxidative degradation beyond this point shifts the ductile-to-brittle transition temperature upward under ISO 179-1/1eA testing at −30 °C. Drying at 80 °C to ≤0.1% moisture is required. Terminal article categories include snowshoe binding pivot plates, ski touring binding toe lever covers, ice climbing crampon front bails, and cycling cleat spacer shims.
Direct overmolding of Grilamid L XE 4074 black 9225 onto thermoplastic elastomer sealing elements in fuel-resistant connector bodies imposes a narrow thermal boundary around the nozzle; melt temperature is held at 265 ±5 °C, because below 260 °C the flow front freezes before filling 0.5 mm sealing retention barbs, while above 270 °C the pre-molded elastomer lip expands and shifts during first-stage packing. The compliance suite is ISO 16750-5:2023 for chemical load resistance, SAE J2044 for quick connector functional requirements, and ASTM D638-14 for post-thermal aging tensile property retention. The addition ratio is 100% compound, with no adhesion-promoting masterbatch, because bond integrity is controlled by melt temperature at the joint and by rapid cooling rather than chemical coupling. The downstream production process uses a 70 t electric injection unit with a 25 mm screw, L/D 22, and a valve-gated hot runner; gate location is maintained at least 3.0 mm from the elastomer joint line to prevent erosion and localized glass bead packing at the seal interface. Mold temperature is deliberately set at 40 °C for the first 2 s of injection then raised to 60 °C during packing to reduce differential thermal contraction at the overmolded boundary. Drying to ≤0.1% moisture at 80 °C is mandatory before molding, and the elastomer insert is pre-dried at 40 °C for 2 h to avoid steam venting at the parting line. Published adhesion data for this specific overmolded configuration is limited; industrial trials on the 70 t unit indicate that mold temperature cycling and gate distance are the controlling parameters. Terminal parts are fuel-resistant connector bodies, fuel pump cover sealing flanges, DEF tank level sensor bosses, and quick connector retainer rings.
Competitive EMS-Grivory Grilamid L XE 4074 black 9225 Nylon 12, Glass Bead Filled, Dry prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8615365186327 or mail to admin@ascent-chem.com.
We will respond to you as soon as possible.
Tel: +8615365186327
Email: admin@ascent-chem.com
Flexible payment, competitive price, premium service - Inquire now!
EMS-Grivory Grilamid L XE 4074 black 9225 is a polyamide 12 injection-moulding grade compounded with a 40 wt% glass bead filler and supplied as dry pellets in moisture-resistant packaging. The grade carries the ISO 1043-1 designation PA12-GB40, with the XE 4074 designation indicating the filler level and melt-processing behaviour within the Grilamid L family, and the colour code 9225 identifying the black version. The dry state is not a nominal label; it indicates that the material is conditioned below 0.10% residual moisture before moulding and that dry-as-moulded mechanical data, rather than moisture-equilibrated nylon data, define the datasheet. Typical applications include dimensionally stable clips, housings, connectors, sensor bodies and pneumatic components where post-moulding warpage, gap consistency and surface quality are process-limiting variables.
Short-glass-fibre polyamide grades orient fibres during flow, producing anisotropic shrinkage and anisotropic mechanical properties. Longitudinal mould shrinkage in a short-glass-fibre PA12 may lie near 0.2–0.4%, while transverse shrinkage can reach 0.8–1.2%; the resulting differential creates bending moments and out-of-plane warpage in flat or U-shaped parts. The glass bead filler in Grilamid L XE 4074 black 9225 has no orientation vector, reducing longitudinal and transverse mould shrinkage to approximately 0.6–0.7% each in plate-type specimens. On production tooling using a 100 t hydraulic injection-moulding machine with a 30 mm three-zone screw and 22:1 L/D ratio, rectangular connector bodies with 1.2 mm wall thickness have been moulded with total indicated run-out below 0.05 mm across a 60 mm span. The bead-filled surface also shows lower glass prominence and gloss differential than short-glass-fibre grades, which is relevant for visible black parts that are not painted.
Relative to unfilled PA12, the 40 wt% glass bead addition raises density from approximately 1.01 g/cm³ to 1.35 g/cm³ and tensile modulus from approximately 1400 MPa to 2400 MPa. The same filler reduces notched impact strength and elongation at break. The grade therefore replaces unfilled PA12 where stiffness, dimensional precision and reduced sink marks at bosses and ribs are more important than high-impact ductility. Relative to short-glass-fibre PA12, the bead-filled product sacrifices flow-direction tensile strength but provides rounder holes, lower anisotropic distortion and fewer post-moulding correction operations.
The following values apply to dry-as-moulded test specimens and are typical values from the manufacturer’s published data, not specification limits. Water absorption to saturation under ISO 62 is 1.1%, which is lower than typical glass-bead-filled PA66 grades and contributes to reduced dimensional change in humid service.
| Property | Test standard | Unit | Typical value |
|---|---|---|---|
| Density | ISO 1183-1 | g/cm³ | 1.35 |
| Water absorption, saturation at 23°C | ISO 62 | % | 1.1 |
| Tensile modulus, dry | ISO 527-1/-2 | MPa | 2400 |
| Tensile yield stress, dry | ISO 527-1/-2 | MPa | 47 |
| Nominal strain at break, dry | ISO 527-1/-2 | % | 20 |
| Charpy unnotched impact strength, 23°C | ISO 179/1eU | kJ/m² | 50 |
| Charpy notched impact strength, 23°C | ISO 179/1eA | kJ/m² | 6 |
| Ball indentation hardness | ISO 2039-1 | MPa | 140 |
| Heat deflection temperature, 1.80 MPa | ISO 75-1/-2 | °C | 75 |
| Heat deflection temperature, 0.45 MPa | ISO 75-1/-2 | °C | 140 |
| Melting point | ISO 11357-1/-3 | °C | 178 |
| Coefficient of linear thermal expansion, longitudinal/transverse | ISO 11359-1/-2 | 10−6/K | 90 |
| Volume resistivity | IEC 62631-3-1 | Ω·m | 1012 |
| Surface resistivity | IEC 62631-3-2 | Ω | 1013 |
Before melt processing, the granulate is dried to residual moisture below 0.10%. The manufacturer-recommended drying range is 80°C for 4–6 h in a desiccant dryer with dew point below −25°C. Melt temperature is specified at 250–290°C; the lower half of the range is used for thin-wall parts and short sprue-to-gate transitions, while the upper half is reserved for hot-runner manifolds with longer residence time. Mould temperature is 40–80°C. At mould temperatures below 40°C, surface dullness and weld-line weakness can increase; above 80°C, cycle time increases without a measurable improvement in bead-filled surface appearance. Injection speed is profiled to maintain a continuous flow front, with volumetric flow limited to avoid shear rates above 10,000 s⁻¹ at the gate.
| Processing parameter | Unit | Recommended value |
|---|---|---|
| Drying temperature | °C | 80 |
| Drying time | h | 4–6 |
| Residual moisture before moulding | % | <0.10 |
| Melt temperature | °C | 250–290 |
| Mould temperature | °C | 40–80 |
PA12 absorbs less moisture than PA6 or PA66. At equilibrium in 23°C and 50% RH, a glass-bead-filled PA12 may reach approximately 0.7–0.8% moisture uptake, which alters dimensions but at lower magnitude than unfilled or fibre-reinforced polyamides. Because the glass beads suppress anisotropic swelling, transverse growth is closer to longitudinal growth than in oriented glass-fibre grades. This behaviour is relevant for sensor housings, electrical connectors and pneumatic fittings that must remain within a narrow gap after exposure to humid air or after cold-to-warm condensation cycles.
After moisture uptake, tensile modulus and yield stress decrease, while Charpy notched impact strength increases. Dry-as-moulded values therefore represent the stiffest and least ductile end of the property envelope. Design calculations for components exposed to humid service should use conditioned values, particularly for snap-fit deflection and weld-line-bearing bosses. The material is not intended for continuous load-bearing service above 100°C or for hot-water pressure vessels. It is also not compounded as an electrostatically dissipative or electrically conductive grade; the typical volume resistivity of 1012 Ω·m is adequate for general electrical insulation but not for static-dissipative applications.
For push-in pneumatic fittings, fuel-vapour clips and underhood connector bodies, the dry grade is processed with generous venting depths of 0.02–0.03 mm because the high filler content can restrict vent channels and produce gas marks at the end-of-fill. The 75°C heat deflection temperature under 1.80 MPa supports short-term thermal excursions in the engine compartment, while the low moisture uptake reduces the seasonal dimensional drift observed in PA66 components. In black 9225 parts, laser marking can be achieved by surface foaming or pigment modification, but contrast must be validated on the production tool surface because glass bead filler affects beam scatter and mark sharpness. Unfilled plasticised PA12 remains preferred for flexible tubing and dynamic clips requiring high elongation, whereas this bead-filled grade is specified when rigid geometry, roundness and low warpage are the primary requirements.
