| HS Code | 137420 |
| Density | 1.23 g/cm³ |
| Melting Point | 178 °C |
| Tensile Modulus | 3100 MPa |
| Tensile Strength At Break | 50 MPa |
| Elongation At Break | 10 % |
| Charpy Impact Strength | 55 kJ/m² |
| Ball Indentation Hardness | 120 MPa |
| Water Absorption Saturation | 1.5 % |
| Water Absorption Equilibrium | 0.7 % |
| Maximum Continuous Service Temperature | 100 °C |
| Electrical Strength | 32 kV/mm |
As an accredited EMS-Grivory Grilamid L XE 10987 nat Nylon 12, 30% Glass Bead Filled, Dry factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | 25 kg net, supplied in sealed moisture-proof polyethylene-lined paper bags on a wooden pallet, ready for dry processing. |
| Container Loading (20′ FCL) | 20′ FCL shipment of dry nylon 12 granules in sealed bags on pallets, loaded and secured for safe transport. |
| Shipping | Grilamid L XE 10987 ships as dry, 30% glass-bead-filled nylon 12 pellets. Supplied in sealed, moisture-barrier bags or drums to prevent moisture uptake. Store in a cool, dry area, away from heat, humidity, and direct sunlight. Ensure proper labeling and keep containers sealed until use to preserve material properties. |
| Storage | Store Grilamid L XE 10987 nat in its original, sealed packaging in a cool, dry, well-ventilated area away from direct sunlight, heat sources, and moisture. Keep container tightly closed when not in use to prevent humidity absorption. Avoid contamination with dust or foreign materials. Under these conditions, shelf life is several months. |
| Shelf Life | Shelf life is indefinite when stored dry, sealed, and protected from moisture; keep in original packaging to prevent degradation. |
Under-hood fastening and fluid-line retention components moulded from Grilamid L XE 10987 nat are processed as dry-as-moulded production items because the 30 wt% glass bead loading and PA12 matrix produce an isotropic shrinkage profile that permits multi-cavity tooling to hold a total tolerance band of ±0.08 mm after 48 h conditioning at 23 °C and 50 % relative humidity in accordance with ISO 291:2008. The material designation under ISO 1043-1:2011 is PA12-GB30, with the glass bead content fixed at 30 wt% by the supplier. Qualification for under-hood fasteners follows ISO 16750-4:2010 thermal-shock cycling from −40 °C to 125 °C, with a minimum of 100 cycles; function retention is verified on the part level because raw material tensile retention does not account for snap-fit geometry, gate freeze direction, or weld-line orientation. Injection moulding is performed on a 25:1 L/D three-zone screw with a reverse-flow barrier section, melt temperature 250–280 °C, mould wall temperature 40–80 °C, and back pressure 5–10 MPa to maintain glass bead dispersion and prevent screw recovery variation.
In production, the formulation ratio is either 100 wt% virgin dry resin or a maximum 15 wt% in-house regrind from sprues and runners when the component is not load-bearing. For snap-fit secondary locks, glass-bead-rich regrind above 15 wt% reduces gate-area elongation and increases hinge fracture probability, so critical locking features are gated with regrind-free material. Terminal products are wiring-harness clips, brake-line spacers, quick-connect secondary locks, and cable ties.
Melt-temperature control is the limiting processing boundary for low-warpage automotive sensor housings because the practical injection moulding window is commonly specified as melt temperature 250–280 °C; holding the melt below 245 °C produces incomplete wetting at the glass bead–polymer interface, visible as gate-area streaking and surface pits. Published percentage loss in weld-line tensile strength for this specific natural glass-bead-reinforced PA12 grade is limited, but part-level tensile evaluation under ISO 527-1:2019 on two-gate mouldings is used to establish the lower melt-temperature boundary for each tool. Above 295 °C, chain scission releases volatiles that deposit on cavity surfaces and alter pack pressure, so closed-loop melt-pressure control with a nozzle thermocouple tolerance of ±1 °C is applied. Barrel residence time is held at or below 8 min.
Compliance for sensor housings attached to engine peripheral areas is verified under ISO 16750-4:2010; enclosure protection is tested to ISO 20653:2013 IP6K9K, and moulding shrinkage is referenced to ISO 2577:2007. The formulation ratio for black laser-markable housings is 1.5–2.5 wt% carbon-black PA12 masterbatch let-down into the natural dry grade. Pre-drying is carried out at 80 °C for 4–6 h in a desiccant dryer to residual moisture below 0.10 wt%; if bags are opened at ambient relative humidity above 60 %, pre-drying before moulding is mandatory. Valve-gated sequential filling is used for two-gate housings to shift the weld line away from pressure-sensor membrane sealing faces. Terminal product types are wheel-speed sensor housings, transmission position sensor carriers, camshaft position sensor shells, and brake pressure sensor adapters.
Electric mobility connector insulators and charging-inlet guide components are dimensionally critical because creepage and clearance distances are calculated from final moulded geometry under IEC 60664-1:2020. Glass-bead-reinforced PA12 offers lower moisture uptake than PA66 in humid environments, reducing post-mould creepage drift during 85 °C/85 % RH exposure; comparative tracking index and breakdown strength are nevertheless determined per IEC 60112:2020 and IEC 60243-1:2013 on the finished article, not inferred from raw material data. Thermal cycling qualification follows IEC 60068-2-14:2009 Test Na, with a typical OEM profile of −40 °C to 105 °C, 250 cycles, followed by insulation resistance measurement at 500 V DC.
The formulation ratio in this sector is 100 wt% virgin Grilamid L XE 10987 nat for high-voltage parts; regrind addition is restricted to 10 wt% from closed-loop sprues only, and any conductive additive masterbatch is limited to 0.5–1.0 wt% to avoid dielectric inhomogeneity. Processing uses a 25:1 L/D screw with a 2.0 mm shot-cushion hold and screw decompression of 2–4 mm after plasticising to prevent bead plate-out; melt temperature is held at 255–275 °C and mould temperature at 60–80 °C. Terminal product types are charging-inlet guide frames, high-voltage connector shells, interlock actuator carriers, and battery-management sensor brackets.
In short-term fluid-contact medical hardware, Grilamid L XE 10987 nat is used for rigid components that require low moisture absorption and isotropic mould shrinkage after ethylene oxide sterilisation. The finished device is evaluated under ISO 10993-1:2018; cytotoxicity and sensitisation data are generated on the final moulded article to ISO 10993-5:2009 and ISO 10993-10:2010, while accelerated ageing is conducted under ASTM F1980-21. The raw material is not supplied with implantable-grade certification, so biocompatibility is a finished-device responsibility and cannot be assumed from resin type alone. Formulation usage in this sector is 100 wt% virgin natural compound; regrind, external release agents, and non-medical masterbatch are excluded because extractables profiles must remain consistent with risk-management documentation under ISO 13485:2016. Moulding takes place in an ISO 14644-1:2015 Class 8 or better cleanroom with a desiccant-dried material feed at residual moisture below 0.10 wt%. The machine barrel is purged between material lots to avoid resin-lot variability, and hot-runner systems are avoided if they generate dead zones exceeding 15 s residence time. Terminal products are infusion pump valve bodies, dialysate manifold housings, quick-connect luers with structural overmoulds, and in vitro diagnostic fluid cartridges.
| Application sector | Compliance anchor | Key condition |
|---|---|---|
| Automotive under-hood fasteners | ISO 16750-4:2010 | Thermal shock −40 °C to 125 °C, 100 cycles |
| Automotive sensor housings | ISO 20653:2013 IP6K9K | Dust and water ingress after thermal ageing |
| Electric mobility connectors | IEC 60664-1:2020 | Creepage and clearance on final moulded geometry |
| Short-term medical fluid contact | ISO 10993-1:2018; ISO 10993-5:2009; ISO 10993-10:2010 | Finished-device biological evaluation; no implantable claim |
| Food and water contact | EU 10/2011; FDA 21 CFR 177.1500 | Overall migration confirmed on final article |
| Industrial automation | IEC 61010-1:2010; ISO 12100:2010; REACH 1907/2006 | EU market material restrictions |
Pressurised water and beverage contact components moulded from the glass-bead-reinforced PA12 grade cover cold-water and intermittent warm-water service where dimensional change from moisture must remain below the tolerance window for threaded closures. Food-contact conformity is evaluated against EU 10/2011 and FDA 21 CFR 177.1500 for nylon 12, but specific migration limits must be confirmed on the final coloured or natural article because processing aids and masterbatch carriers alter the overall migration profile. For potable-water pressure-retaining parts, the finished component is additionally assessed under NSF/ANSI 61 or market-specific drinking-water schemes; published data for this specific grade in prolonged hot-water service above 60 °C is limited. The formulation ratio is 100 wt% natural dry material for unpigmented bodies, or 2–3 wt% approved masterbatch is added for coloured service parts. Production processing uses pre-drying at 80 °C for 4–6 h, injection moulding with screw L/D of 22:1–25:1, melt temperature 250–270 °C, and mould temperature 40–60 °C to avoid excessive crystallisation-induced sink. Terminal products include water-filter housings, beverage dispensing check-valve bodies, espresso-machine pump mounts, and water softener bypass blocks.
When machined 6061-T6 aluminium structural brackets are replaced by Grilamid L XE 10987 nat, the supplied density near 1.24 g/cm³ compared with aluminium at 2.70 g/cm³ yields a mass reduction of about 54 % per unit volume, but the substitution is limited to low-load housings because the glass-bead-filled PA12 does not replicate aluminium modulus. Compliance for final industrial control equipment follows IEC 61010-1:2010 and ISO 12100:2010; EU market restrictions include REACH 1907/2006 and RoHS 2011/65/EU. The formulation ratio in this sector is 80–90 wt% virgin dry material with 10–20 wt% closed-loop regrind for non-safety covers and brackets, provided the regrind is from the same lot and dried identically. Processing is injection moulding with brass or stainless steel threaded inserts overmoulded or heat-staked after moulding, because direct threaded holes in unfilled weak sections are not acceptable. Melt temperature is held at 250–280 °C, mould temperature at 50–80 °C, and pre-drying at 80 °C for 4–6 h. Terminal product types are robot gripper housings, linear actuator covers, industrial sensor brackets, and control pendant shells.
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EMS-Grivory Grilamid L XE 10987 nat is a natural-coloured, 30% glass bead filled polyamide 12 injection-moulding compound supplied under the dry designation. The grade is designated PA12-GB30 in manufacturer literature. The term Dry identifies the moisture state used for reporting mechanical properties, not a separate polymer variant. Dry-as-molded data are generated after the compound has been dried to a residual moisture content below 0.10% by mass, typically by dry-air drying at 80 °C for 4–8 h or by accelerated conditioning according to ISO 1110. The glass bead filler is spherical rather than fibrous, which influences shrinkage, modulus, and surface characteristics differently from glass-fibre-reinforced polyamide 12.
The material is specified for injection-moulded parts that require low warpage, dimensional repeatability, chemical resistance, and a smooth moulded surface. Candidate application areas reported in EMS-Grivory technical literature include automotive fluid-handling components, pneumatic connectors, valve bodies, and precision housings. Performance in a specific fluid must be validated by immersion testing; chemical resistance data are commonly generated according to ISO 175 or an OEM-specific test method. Published long-term exposure data for this specific configuration are limited, and the absence of such data should not be interpreted as approval for continuous exposure at elevated temperature.
The matrix is a polyamide 12, which has a relatively low equilibrium moisture uptake and lower density compared with polyamide 6 and polyamide 66. The 30% glass bead loading is expressed by mass. The bead geometry is approximately equiaxed, producing less melt-flow orientation than chopped glass fibre. This filler architecture raises stiffness and reduces mould shrinkage compared with unfilled PA12, while retaining a more isotropic mechanical response than glass-fibre-reinforced grades. The dry tensile modulus is therefore positioned between unfilled PA12 and a comparable 30% glass-fibre PA12. Typical published values are shown in Table 1; they are representative manufacturer literature data and should not be treated as procurement specification limits.
| Property | Standard | Unit | Dry | Conditioned at 23 °C/50% RH |
| Density | ISO 1183-1 | g/cm³ | 1.23 | — |
| Water absorption at saturation in water 23 °C | ISO 62 | % | — | 1.4 |
| Tensile modulus | ISO 527-1/-2 | MPa | 1900 | 1500 |
| Tensile stress at break | ISO 527-1/-2 | MPa | 45 | 38 |
| Nominal strain at break | ISO 527-1/-2 | % | 10 | 25 |
| Charpy notched impact strength at 23 °C | ISO 179-1/1eA | kJ/m² | 6.0 | 8.0 |
| Melting temperature, DSC 10 K/min | ISO 11357-3 | °C | 176 | — |
| Heat deflection temperature, 1.80 MPa | ISO 75-2/A | °C | 70 | — |
| Heat deflection temperature, 0.45 MPa | ISO 75-2/B | °C | 130 | — |
| Flammability at 3.0 mm | UL 94 | class | HB | — |
The dry-to-conditioned shift is characteristic of polyamide 12. Moisture conditioning reduces tensile modulus and tensile stress while increasing elongation at break and notched Charpy impact. The glass bead phase reduces hygroscopic dimensional movement because the glass does not absorb water and restricts matrix expansion, but the material remains sensitive to moisture equilibrium in service.
Glass beads are approximately equiaxed and do not orient in the melt flow field to the same extent as high-aspect-ratio glass fibres. In glass-fibre-reinforced PA12, orientation can produce high longitudinal modulus but also large differential shrinkage between flow and transverse directions. In a glass-bead-filled PA12, the filler distribution is more isotropic. Mould shrinkage values determined on plaques according to ISO 294-4 are typically lower than those of unfilled PA12 and more nearly equal in flow and transverse directions. Published linear mould shrinkage values for PA12-GB30 generally fall in the 0.8%–1.3% range depending on wall thickness, gate location, and post-mould conditioning.
Weld lines remain a design-limiting feature. At a converging melt front, the spherical beads do not bridge the junction with oriented reinforcement; the local failure mode is matrix-dominated. In production parts with holes or multi-gate layouts, weld-line strength retention should be characterised by notched tensile or impact testing rather than accepted from bulk-property data. The reduction in weld-line strength can be less severe than in glass-fibre grades because the beads do not create a strongly anisotropic stress field, but a design reduction factor is still required. Published weld-line efficiency data for this specific grade are limited.
Pre-drying is mandatory. Residual moisture above 0.10% hydrolyses the PA12 backbone at melt temperatures and produces splay, gas streaks, inconsistent shot weight, and reduced molecular weight. Dry-air or vacuum dryers should deliver a dew point of -30 °C or lower. Drying at 80 °C for 4–8 h is typical; if moisture exposure has exceeded 0.20%, drying time should be extended. Moisture analysers calibrated to ISO 15512 are preferred for verification because PA12 can reach a misleading surface-dry condition while core moisture remains elevated.
Barrel temperature profiles from 240 °C to 280 °C are used, with melt temperature controlled below 300 °C. The crystalline melting point is near 176 °C; a melt temperature of 250–270 °C is an industrial starting point for medium-walled parts. Elevated residence time above 280 °C can cause yellowing and viscosity shift. On a 40–60 mm screw injection-moulding machine, a low-compression general-purpose three-zone screw with a free-flow check ring is generally suitable. Glass beads are less abrasive than glass fibres, but long campaigns at high filler loadings justify hardened screw flights and bimetallic barrels for shot-to-shot consistency.
Mould temperature should be maintained at 80–120 °C. At mould temperatures below 80 °C, the surface freezes quickly and the part may show higher internal stress, dimensional drift after annealing, and reduced weld-line toughness. Higher mould temperatures improve crystallinity and dimensional stability but increase cooling time. Mould temperature loops should preserve ±5 °C uniformity across the cavity. Hot runners and gating must avoid dead spots; valve-gated hot runners are preferred where gate vestige and stringing are concerns. Cavity pressure transducers should be used during process qualification to establish gate freeze and holding-pressure settings. Typical cavity pressure at packing may be in the 30–60 MPa range, but machine hydraulic pressure settings must be derived from the actual screw diameter and intensification ratio.
Polyamide 12 absorbs less water than polyamide 6 or polyamide 66. At 23 °C and 50% RH, the moisture uptake of L XE 10987 nat is around 0.7% by mass according to ISO 62 equilibrium data; saturation in water at 23 °C is reported near 1.4%. The glass bead filler reduces hygroscopic expansion because the glass phase does not absorb water and constrains the matrix. However, dimensional change is not eliminated. A part dimensioned in the dry state will expand slightly when equilibrated to humid air. This must be accounted for in snap-fit deflections, gear fits, and bearing clearances.
Chemical resistance of PA12 is generally favourable in aliphatic hydrocarbons, mineral oils, greases, diesel, and many automotive fluids. Resistance should be confirmed by ISO 175 immersion at the service temperature. Glass bead filler does not fundamentally change the chemical resistance of the matrix, but it can alter the diffusion path and exposed polymer surface area. Strong mineral acids, phenols, and certain chlorinated solvents attack polyamide 12 and should be avoided. For hot-water or glycol-water service above 80 °C, hydrolysis and plasticization become relevant. Continuous service at high temperature may require heat-stabilized PA12 grades or a different resin family.
Flammability classification is reported as HB at 3.0 mm according to UL 94. The standard datasheet does not provide food-contact or potable-water approvals. Regulatory compliance to REACH and RoHS should be confirmed by supplier declaration for the specific shipment, not inferred from the grade name.
For substitution against unfilled PA12, the primary change is an increase in dry tensile modulus from approximately 1,400–1,600 MPa to the 1,900 MPa range and a reduction in elongation at break. Against a 30% glass-fibre-reinforced PA12, the glass-bead grade provides lower tensile modulus and lower notched Charpy impact but markedly lower warpage and a smoother moulded surface. The spherical filler also reduces machine and tool wear. Against PA6-GB30 or PA66-GB30, the PA12 matrix provides lower density at 1.23 g/cm³, lower water absorption, and better resistance to stress cracking in zinc chloride and many automotive fluids. However, the heat deflection temperature is lower; the 1.80 MPa HDT of 70 °C reported for this grade is below typical values for PA66-GB30. This limits use in applications with continuous structural load above approximately 70–90 °C under load. Selection should therefore be based on dimensional isotropy, surface finish, moderate stiffness, and chemical resistance rather than maximum load-bearing capacity. Published data for fatigue, creep, and long-term hydrolysis in this specific configuration are limited.
