| HS Code | 230907 |
| Filler Content | 20% Glass Fiber |
| Density | 1.16 g/cm³ |
| Water Absorption 24h | 0.3% |
| Tensile Modulus Conditioned | 4500 MPa |
| Tensile Stress At Break Conditioned | 75 MPa |
| Elongation At Break Conditioned | 6% |
| Charpy Notched Impact Strength Conditioned 23 C | 8 kJ/m² |
| Charpy Unnotched Impact Strength Conditioned 23 C | 65 kJ/m² |
| Melting Temperature | 178 °C |
| Heat Deflection Temperature 1 8 Mpa | 150 °C |
As an accredited EMS-Grivory Grilamid LV-2A NZ Nylon 12, 20% Glass Fiber Filled, Conditioned factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Supplied as conditioned pellets in sealed, moisture-proof 25 kg bags, preventing moisture absorption and preserving material quality. |
| Container Loading (20′ FCL) | EMS-Grivory Grilamid LV-2A NZ Nylon 12, 20% glass fiber filled, packed in 25kg bags, palletized for 20' FCL container loading. |
| Shipping | EMS-Grivory Grilamid LV-2A NZ is shipped as conditioned nylon 12 pellets in sealed, moisture-proof bags or drums. Store in a dry, cool area away from direct sunlight. Avoid prolonged exposure to humidity. Transport at ambient temperature; protect from physical damage and contamination. Standard non-hazardous handling applies. |
| Storage | Store Grilamid LV-2A NZ in its original, sealed container in a cool, dry area away from direct sunlight, heat sources, and UV exposure. Keep the material protected from moisture, as nylon 12 absorbs humidity, which can affect processing and performance. Maintain moderate temperatures and low humidity; use desiccant if necessary before processing. |
| Shelf Life | Shelf life is generally indefinite when stored dry, cool, and in original sealed packaging. |
Where the automotive fuel system specification demands a 20 wt% glass fibre reinforced polyamide 12 in the conditioned state, EMS-Grivory Grilamid LV-2A NZ is injection-moulded at melt temperatures between 250°C and 280°C and tool temperatures between 60°C and 80°C, a process window that avoids surface delamination around the glass fibre bundles. The pellet feedstock is dried at 80°C for 4 h to 8 h to a residual moisture content below 0.10% using Karl Fischer titration according to ISO 15512; the conditioned moisture state of the finished component is a post-mould equilibrium condition and does not remove the need for pellet drying. Components moulded from the material at a nominal wall thickness of 2.0 mm to 3.5 mm include fuel filler neck check valves, evaporative emission canister quick connectors, and fuel filter end caps. The 20 wt% fibre content, determined by ISO 3451-1 ash analysis, provides creep resistance under continuous fuel vapour exposure up to 90°C. Compliance validation follows SAE J2044 for connector retainer force and drop resistance, SAE J2260 for low-permeation fuel system assemblies, and ISO 527-1 tensile characterisation for snap-fit extension. Gate position is located away from barb root radii because fibre orientation in the weld line lowers local fracture energy in notched tests, and multiple gates are discouraged for circular cross sections unless flow simulation confirms a meeting angle above 120°. The conditioned equilibrium at 23°C and 50% relative humidity reduces tensile modulus compared with dry-as-moulded specimens but increases elongation at break, a trade-off recorded by ISO 1110 accelerated conditioning before destructive testing.
Rail rolling stock cable glands and conduit fittings are evaluated against EN 45545-2:2020 fire safety requirements, and the natural PA12-GF20 grade must be tested in the final part geometry because the unfilled polymer base carries no inherent flame-retardant additive package. Conditioned specimens show lower moisture uptake than PA6 or PA66 under ISO 15512 water content measurement, which reduces dimensional drift in humid tunnel atmospheres; dimensional checks are made after ISO 1110 conditioning at 70°C and 62% relative humidity or after 23°C/50% standard atmosphere. The 20 wt% glass fibre loading lowers flow-direction shrinkage sufficiently to permit moulding of thread diameters from M12 to M32 without post-machining, but the anisotropic filler orientation across a thread root can create a resin-rich surface layer and a glass-rich core; tool temperature is held at 70°C to 80°C to promote a skin layer that reduces fibre protrusion. Barrel temperatures run from 250°C at the feed throat to 270°C at the nozzle, with screw back pressure of 30 bar to 50 bar to distribute the fibres without excessive breakage. Components include cable gland bodies, locknuts, and conduit clip brackets. Each finished component is validated under IEC 60695-11-10 for the UL 94 burn class and must be interpreted as component-specific data; the natural conditioned grade itself is typically rated HB at 1.6 mm, not a fire-resistant designation. For EN 45545-2 HL2 compliance, the manufacturer must evaluate the entire gland assembly rather than rely solely on raw material certification because wall thickness, integrated elastomer seals, and cable loading alter heat release and smoke density results. The material is supplied with REACH Regulation (EC) No 1907/2006 and RoHS Directive 2011/65/EU compliance statements covering the raw material and does not guarantee component-level certification.
In heavy-duty commercial vehicle air brake systems, valve bodies and push-to-connect cartridges are moulded from the conditioned PA12-GF20 because circular cross sections, internal thread inserts, and compressor oil exposure demand a material with low creep under continuous 10 bar to 12 bar pneumatic service. The grade processes in multi-cavity tools with sequential valve gating at melt temperatures from 255°C to 275°C and tool temperatures from 60°C to 80°C; lower tool temperatures produce higher surface gloss but reduce dimensional repeatability at thread crests. The 20 wt% glass reinforcement is distributed by a screw with a compression ratio of 2:1 to 2.5:1 and a check ring that seats against glass-filled melt without leaking during injection. Conditioned ISO 179-1/1eA notched Charpy tests are collected at -40°C, 0°C, and 23°C to establish the low-temperature impact margin within the service pressure categories of ECE R13. End components include brake valve body housings, quick release valve pistons, pressure switch bodies, and push-to-connect fittings. Chloride exposure from winter highway de-icing is one operational boundary: concentrated zinc chloride and calcium chloride brines above 70°C can induce stress corrosion cracking in polyamide 12, so components located near de-icing spray should be shielded or qualified according to DIN EN ISO 22088-3 bending stress testing. The conditioned equilibrium at 23°C and 50% relative humidity stabilises fit dimensions in female thread forms, but dry-as-moulded dimensions must be used for machining operations such as thread tapping because subsequent moisture uptake increases the outer diameter by a small but measurable amount.
Ski touring binding baseplates and crampon adapters are injection-moulded from conditioned PA12-GF20 where the release mechanism must resist forward and backward torque at alpine temperatures without brittle failure. The part is designed with a nominal wall thickness of 3 mm to 5 mm and fibre orientation aligned from the central release pivot to the heel pins, because transverse orientation across a narrow web can reduce notched impact resistance. Tool temperature is set at 70°C to 80°C, and the holding pressure profile is ramped from 600 bar to 300 bar over a 6 s to 10 s gate seal time to minimise sink marks at boss features. Release load testing follows ISO 13992, and the component must pass static release torque and dynamic step-in tests at -20°C after conditioning. The glass fibre content is 20 wt% per ISO 3451-1, sufficient to raise flexural modulus under ISO 178 while retaining the low-temperature ductility characteristic of polyamide 12. A processing boundary exists: fibre breakage induced by aggressive plastication shortens the mean glass length and reduces impact strength, so screw speed is limited to 80 rpm to 120 rpm and back pressure is maintained below 50 bar. Surface gloss is lower than an unfilled polyamide, and textured surfaces are used on exposed upper faces to mask flow lines; this is not a cosmetic deficiency but a documented effect of glass fibre surfacing during mould filling.
For wet-rotor circulator pumps moving water-glycol mixtures in residential and light commercial heating circuits, the composite impeller and separator can be moulded from the conditioned material where ISO 175 chemical resistance testing is used to qualify immersion in a 50 vol% water-ethylene glycol mixture at 80°C for 1000 h, followed by ISO 527-1 tensile strength retention checks. The 20 wt% glass fibre content supports the centrifugal stress field at impeller speeds from 2000 rpm to 5000 rpm and reduces blade deflection at the outer diameter. Moulding conditions require a melt temperature of 260°C to 280°C and a tool temperature of 80°C to promote uniform crystallinity in the hub and blade junction. Fibre orientation follows the blade plane when the gate is positioned at the hub centre; radial flow then produces a high-modulus blade leading edge and a lower-modulus trailing edge, which limits cavitation erosion at the blade tip. Ceramic shaft sleeves are preheated to 80°C before insert moulding to prevent post-mould cracking around the insert. The material is validated under ISO 62 water absorption after immersion and ISO 175 for chemical resistance to propylene glycol and ethylene glycol mixtures. Operational boundaries include avoiding exposure to steam at 120°C or higher, where hydrolysis acceleration and glycol oxidation reduce molecular weight, and avoiding prolonged contact with acidic cleaning agents below pH 4. End components include impellers, vent plugs, and air separators used in boiler circulation loops.
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EMS-Grivory Grilamid LV-2A NZ is a reinforced polyamide 12 compound containing 20% glass fibre by mass, supplied in natural colour and characterized in the conditioned state. The conditioned designation refers to tensile and impact specimens brought to accelerated moisture equilibrium under ISO 1110 or standard atmospheres of 23 °C and 50% relative humidity, ISO 291. The product is distinct from unreinforced PA12 and from PA66 or PA6 glass-fibre compounds because the PA12 backbone limits saturated water uptake to approximately 1.0–1.2% under ISO 62 immersion, compared with 5.5%–6.0% for a comparable PA66 GF20. Density is between 1.22 and 1.24 g/cm³ per ISO 1183-1. The glass reinforcement raises tensile modulus and heat deflection temperature relative to unreinforced PA12 but lowers elongation to break; the conditioned data set is the appropriate basis for humid-service mechanical comparisons.
Under ISO 527-1/-2 tensile testing at 23 °C, the dry-as-moulded tensile modulus is generally reported between 4800 and 5500 MPa, while the conditioned modulus falls to 3000–3900 MPa. The reduction is dominated by plasticization of the polyamide matrix, which decreases interfacial load transfer to the glass fibres. Tensile stress at break for dry specimens is typically 85–115 MPa; conditioned specimens fall to 55–75 MPa. Nominal strain at break remains below 10% dry and rises to 15%–25% conditioned, so the material is not a high-elongation polyamide even after moisture uptake. Charpy notched impact strength per ISO 179-1/1eA at 23 °C is typically 8–12 kJ/m² dry and 12–18 kJ/m² conditioned; Charpy unnotched values per ISO 179-1/1eU are approximately 60–80 kJ/m² and reflect fibre pull-out energy. Heat deflection temperature at 1.8 MPa, ISO 75-2, lies near 145–160 °C. These figures are typical data, not minimum specification limits.
| Property | Standard | Dry-as-moulded | Conditioned |
|---|---|---|---|
| Density | ISO 1183-1 | 1.22–1.24 g/cm³ | 1.22–1.24 g/cm³ |
| Tensile modulus | ISO 527-2 | 4800–5500 MPa | 3000–3900 MPa |
| Tensile stress at break | ISO 527-2 | 85–115 MPa | 55–75 MPa |
| Nominal strain at break | ISO 527-2 | 4–10% | 15–25% |
| Charpy notched 23 °C | ISO 179-1/1eA | 8–12 kJ/m² | 12–18 kJ/m² |
| HDT A 1.8 MPa | ISO 75-2 | 145–160 °C | 145–160 °C |
Moisture uptake at 23 °C and 50% relative humidity reaches approximately 0.5–0.7%; at water immersion saturation the value rises to 1.0–1.2%. These values are significantly lower than those of PA66 GF20 and PA6 GF20. Even so, residual moisture above 0.1% at the throat of the injection unit can produce splay, surface voids, and hydrolytic degradation. Material stored in plant air above 60% relative humidity should be dried in a desiccant dryer at 80–90 °C for 4–6 hours with a dew point below −30 °C. On production-scale machines, hopper dryers without a desiccant bed frequently fail to reach this dew point in humid conditions, and batch-to-batch variation in surface finish has been observed when regrind is added above 25% without closed-loop drying.
Because the PA12 matrix absorbs less water than PA6 or PA66, short exposure to plant humidity is less damaging, but glass-filled granules can trap moisture at the fibre-matrix interface. Vacuum drying at 80 °C for 3–4 hours is an alternative where desiccant capacity is limited. Mould shrinkage for a 20% glass-filled PA12 is anisotropic. Flow-direction shrinkage is typically in the range of 0.2%–0.5%, while transverse shrinkage is 0.5%–0.8%, depending on wall thickness, gate location, and hold pressure. This anisotropy is lower than that of unreinforced PA12 but higher than some particulate-filled grades because the glass fibres orient along the flow front. Too low a hold pressure produces higher transverse shrinkage and warpage in flat covers; a hold-pressure profile should be developed using process trials that record part mass, dimensions, and fibre orientation.
The melt-temperature window is 240–270 °C; continuous operation above 280 °C should be avoided because thermal-oxidative chain scission accelerates and can shift the molecular weight distribution toward lower melt viscosity and reduced weld-line strength. The melt residence time in the barrel should remain below 6 minutes for a general-purpose screw of 20:1–25:1 L/D. A screw speed of 50–150 rpm and back pressure of 0.3–0.7 MPa are common starting points; high back pressure improves fibre wetting but reduces glass fibre length. On a production machine with a 25:1 L/D screw, excessive back pressure can raise melt temperature by 5–15 °C, affecting the residence-time margin. The non-return valve, screw tip, and barrel should be hardened for glass-filled compounds because mineral and glass fibre abrasion increases wear compared with unreinforced PA12.
Mould temperatures from 40 to 80 °C are specified. The lower half of this range reduces cycle time but yields lower crystallinity and greater post-shrinkage; the upper half improves dimensional reproducibility and HDT but increases cooling time. Crystallization of PA12 occurs around 140–155 °C depending on cooling rate, so thin-wall tools may freeze prematurely if gate dimensions are too small. Hot-runner systems require accurate temperature control below 280 °C and should not hold molten material for extended periods because glass-filled PA12 can degrade in stagnant manifold regions.
Weld-line strength is lower in glass-reinforced polyamides than in the bulk, and the reduction is influenced by gate position, fibre orientation, and melt temperature. Published data for this specific configuration is limited; tooling trials should include mechanically tested weld-line specimens prepared under ISO 527-2 or ASTM D638 so that structural analysis does not overstate the local failure stress. X-ray or computed tomography studies on similar glass-fiber polyamides show a skin layer with high flow-direction fibre orientation and a core with more random orientation. That gradient creates a non-uniform modulus through the thickness; finite-element models that use isotropic properties can overpredict stiffness in thin sections. For warpage-sensitive parts, mould-filling simulation with orientation-coupled shrinkage data is required.
Direct substitution without geometry changes is not a drop-in. PA66 GF20 typically has a dry tensile modulus of 7000–8000 MPa, while this PA12 GF20 grade is in the 4800–5500 MPa range. A snap-fit arm that passes in PA66 GF20 may lose 10%–20% of its retention force in the PA12 grade because bending stiffness scales with modulus for the same cross-section. Conversely, the PA12 grade’s density of 1.22–1.24 g/cm³ is lower than 1.36–1.39 g/cm³ for PA66 GF20, and its saturated moisture uptake is approximately 1.0–1.2% instead of 5.5%–6.0%. The lower moisture uptake improves long-term dimensional stability and dielectric consistency in humid electrical housings and reduces post-moulding growth in fluid connectors exposed to condensation.
| Property | Grilamid LV-2A NZ PA12 GF20 | PA66 GF20 typical | Unreinforced PA12 typical |
|---|---|---|---|
| Density | 1.23 g/cm³ | 1.38 g/cm³ | 1.01 g/cm³ |
| Saturated water uptake | 1.0–1.2% | 5.5–6.0% | 1.0–1.1% |
| Tensile modulus dry | 4800–5500 MPa | 7000–8000 MPa | 1300–1600 MPa |
| HDT A 1.8 MPa | 145–160 °C | 220–250 °C | 50–60 °C |
In pneumatic and fuel-system components, PA12 is often selected for resistance to aliphatic hydrocarbons, diesel, and zinc chloride solutions generated by road salt. Qualification for such components may include ISO 1817 immersion testing, thermal shock cycling, and pressure impulse or burst testing derived from SAE J844 or OEM-specific standards. The glass-reinforced grade reduces creep under sustained clamp load compared with unreinforced PA12; long-term tensile creep can be evaluated under ISO 899-1. However, aggressive alcohol-blended fuels can reduce stress-cracking resistance, and published data for this specific configuration in evaporative fuel blends is limited. Compatibility testing must use the actual production fuel mixture, conditioning temperature, and injection-moulded weld-line locations.
For electrical connector bodies, the lower moisture uptake of PA12 supports stable dielectric performance under IEC 60243-1 or IEC 60112 depending on the requirement. The glass fibre reduces creep and thermal expansion relative to unreinforced PA12 but can increase anisotropy in shrinkage. Regulatory declarations for EU RoHS 2011/65/EU and REACH are obtained from the manufacturer for natural grade; no halogenated flame-retardant system is incorporated in the base resin. The product remains a stiff, low-moisture polyamide 12 grade intended for dimensionally stable fluid-contact and enclosure components where glass reinforcement is required but the higher water uptake of PA66 or PA6 is not acceptable.
