| HS Code | 589465 |
| Density | 1.31 g/cm³ |
| Tensile Modulus Conditioned | 6000 MPa |
| Tensile Strength At Break Conditioned | 85 MPa |
| Elongation At Break Conditioned | 2% |
| Charpy Notched Impact Strength Conditioned 23 C | 10 kJ/m² |
| Melting Point | 178 °C |
| Heat Deflection Temperature 1 80 Mpa | 150 °C |
| Ul94 Flammability Rating | V-0 |
| Water Absorption Saturation | 1.2% |
| Dielectric Strength | 30 kV/mm |
| Comparative Tracking Index | 600 V |
| Volume Resistivity | 1.0E+13 Ohm·m |
As an accredited EMS-Grivory Grilamid LV-30H V0 Nylon 12, 30% Glass Fiber Filled, Conditioned factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Moisture-barrier sealed bag, 25 kg net, protecting conditioned nylon 12 with 30% glass fiber from moisture and contamination. |
| Container Loading (20′ FCL) | 20′ FCL shipment of Grilamid LV-30H V0 nylon 12, 30% glass fiber filled, conditioned, packed on pallets in sealed containers. |
| Shipping | Ship as non-hazardous, dry nylon 12 pellets. Protect from moisture and excessive heat; use sealed, moisture-barrier packaging. Avoid prolonged UV exposure and heavy impact during transit. Store in a cool, dry area with adequate ventilation. No special transportation restrictions apply. |
| Storage | Store in a cool, dry, well-ventilated area away from direct sunlight, heat sources, and UV exposure. Keep the material in its original sealed container or resealable moisture-barrier bag to prevent moisture absorption, which can affect processing. Maintain temperatures below 50°C and avoid condensation, humidity, and contact with strong oxidizers or acids. |
| Shelf Life | Shelf life is indefinite if stored sealed, cool, and dry; avoid moisture absorption and direct sunlight. |
Moulding of arc-chamber side walls in miniature circuit breakers rated 240/415 V AC with 6 kA short-circuit interrupting capacity places simultaneous demands on arc-tracking resistance, dimensional stability after switchboard heat aging, and retention of flame-retardant performance after repeated thermal cycling. Grilamid LV-30H V0 pellets are pre-dried in a closed-loop dehumidifying hopper with a dew point below -30 °C at 80 °C for 4 h, targeting residual moisture below 0.10 %. The cylinder temperature profile from rear zone to nozzle is maintained at 240 °C, 250 °C, 260 °C, and 265 °C, with back pressure fixed at 8 bar to control glass fibre distribution without inducing excessive shear heating. Melt residence time must not exceed 8 min at 265 °C; longer residence degrades the flame-retardant system and produces surface silvering adjacent to the gate. Tool temperature is held at 80 °C to 90 °C, and gate lands are sized at 70 % to 80 % of the nominal wall to prevent jetting. Shrinkage measurements on three-plate moulds indicate 0.2 % to 0.4 % in the flow axis and 0.6 % to 0.9 % transverse at 3 mm wall, so moving-contact slot core pins require draft angles above 1.5 ° to avoid ejection fracture. The material carries UL 94 V-0 recognition at 0.8 mm and a comparative tracking index of 600 V under IEC 60112, permitting reduced creepage distances in pollution degree 3 switchgear per IEC 60664-1. End products include toggle-link carriers, coil former supports, arc splitter retaining plates, and residual current device insulating bases.
Thermal shock and damp heat cycling in DC fast-charge inlet housings exposes glass-filled Nylon 12 to condensation conditions that lower surface resistivity and can initiate tracking across the gap between pilot and power contacts. IEC 62196-1 and UL 2251 compliance for 1,000 V DC charging inlets requires creepage distances calculated for pollution degree 3 and overvoltage category III. With a CTI of 600 V, the insulation coordination calculation permits a creepage reduction factor relative to materials with CTI below 400 V; however connector designers typically retain 6.3 mm creepage between DC+ and DC− terminals because conformal coating is not applied to the moulded housing. In production, the inlet housing is moulded with a sequential valve-gated hot runner system to shift weld lines away from the latching boss and cable strain-relief ribs. Melt temperature is set at 265 °C, and the tool is heated to 90 °C to improve glass fibre wet-out and to minimize visible glass at the sealing face. After moulding, parts are conditioned for 48 h at 23 °C and 50 % RH per ISO 291 before terminal insertion; insertion force is measured on a 2 kN load cell at 50 mm/min. The low equilibrium moisture uptake of Nylon 12 means terminal retention changes less than 15 % after 1,000 h at 85 °C and 85 % RH, based on supplier conditioning data; published data for this specific configuration is limited. End products include DC fast-charge inlet housings, vehicle charging port flanges, and pilot pin insulator blocks.
USCAR-2 and LV214-2 qualification for 48 V mild-hybrid wiring connectors subjects the housing to thermal shock from -40 °C to 125 °C, followed by 10–1000 Hz random vibration and 100 % terminal retention after heat aging. Glass-filled Nylon 12 is selected over PA66 because its equilibrium moisture uptake at 23 °C/50 % RH is approximately one-third that of PA66 GF30, reducing post-humidity dimensional growth and maintaining terminal retention pockets within tolerance. In this grade, conditioned notched impact strength rises above the dry-as-moulded value, which helps snap-fit arms survive 25 insertion/removal cycles during harness checking. Moulding parameters require 60 °C to 80 °C tool temperature, with an absolute lower limit of 60 °C for any wall section below 1.0 mm; lower mould temperature produces a thick amorphous skin that cracks at the terminal lance root. Weld lines must be positioned away from terminal retention slots by using two edge gates on opposite sides of the connector body, or by relocating the melt interface to a low-stress area behind the connector latch. The flame-retardant package reduces weld-line tensile strength to about 65 % of parent material when the weld line is formed at the flow front of a 0.8 mm terminal slot, so gate simulation is performed before cutting steel. End products include 48 V hybrid connector housings, HSD connector shells, and power distribution centre connector bodies.
Photovoltaic string inverters operating at 1500 V DC require disconnecting devices whose insulating components remain non-tracking after years of dust accumulation and diurnal temperature cycling in enclosures without forced ventilation. The rotary contact carrier and terminal barrier walls are moulded from Grilamid LV-30H V0 with hot runner drops located over the thickest section of the rotating ring; tool temperature of 90 °C is used to minimize differential shrinkage between the glass-fibre-rich flow skin and the core. Post-mould annealing at 100 °C for 2 h in nitrogen reduces internal stress around brass insert threads, because the insert wall thickness is only 1.8 mm. The injection profile keeps shear rate below 40,000 s⁻¹ at the gate to avoid fibre breakage and a corresponding drop in impact strength. For IEC 60947-2 disconnectors used up to 1000 V DC, the creepage distance of 25 mm is maintained across the arc chamber, and the material passes the 850 °C glow wire test at 1.5 mm wall. Pre-drying at 80 °C to 0.08 % moisture is verified by a halogen moisture analyser before the first shift; containers must be sealed because rehydration of PA12 is slow but measurable at 65 % RH. End products include rotary DC isolator bodies, terminal covers, and combiner-box busbar supports.
Rolling stock electrical enclosures inside passenger areas require fire behaviour that extends beyond flammability to smoke density and toxic gas release. Components such as circuit breaker front plates, terminal rail mounting brackets, and relay bases are moulded from this grade at 2.0 mm to 3.0 mm nominal wall and are then evaluated under EN 45545-2 hazard levels HL2 and HL3. Because the material is conditioned to 23 °C/50 % RH, mechanical properties reflect service conditions rather than dry-as-moulded values. The conformity assessment uses the R22 requirement for small electrical components and R23 for wiring accessories; compliance claims must reference specific test reports from the material supplier. Injection moulding for these parts uses a tool temperature of 80 °C and a holding pressure profile that decays from 600 bar to 200 bar over 8 s, reducing sink marks across the relay base mounting bosses. Wall thickness below 1.5 mm is avoided around live parts because flame performance and dielectric rigidity are both reduced at thinner sections, and railway operators may reject parts with visible glass fibres at the sealing interface of enclosure glands. End products include circuit breaker front plates, terminal rail mounting brackets, relay bases, and enclosure cable gland insulating collars.
IEC 60335-1 requires current-carrying parts in unattended appliances to withstand a glow wire test at 750 °C under IEC 60695-2-11. Terminal block bases and ignitor harness retainers are moulded at 80 °C tool temperature with the same pre-drying protocol; part weight variation across a 16-cavity hot runner tool is held within 0.4 % to ensure consistent flame-retardant concentration around each mould cavity. At 1.5 mm wall, the material passes glow wire flammability after ageing; at 0.8 mm, the glow wire test result is influenced by storage RH history because moisture absorbed during conditioning acts as a blowing agent and can increase post-test char formation. Therefore appliance producers store moulded parts in sealed polyamide bags with desiccant until assembly and avoid exposure above 60 % RH for more than 24 h before glow wire submission. Comparative tracking index is controlled to 600 V; ball pressure temperature is verified at 125 °C to IEC 60695-10-2. End products include gas boiler ignition control terminal strips, washing machine pump housings, and dishwasher control panel mounting frames.
Modular battery energy storage systems rated 1500 V DC use glass-filled Nylon 12 for busbar support insulators and cell terminal frames because the material retains dielectric strength after exposure to cell vent gases and condensation. The busbar support is moulded with a tunnel gate opposite a copper insert; insert pre-heating to 120 °C prevents sink marks and insert delamination in the 2.5 mm wall. Insulation coordination follows IEC 60664-1 with pollution degree 3 and material group I based on CTI 600 V. Manufacturers require minimum surface resistivity of 1 × 10¹³ Ω after conditioning at 40 °C and 93 % RH for 96 h in accordance with IEC 62631-3-2; the conditioned grade reaches this value, but ionic contamination from mould release or copper dust creates local tracking paths and must be excluded from assembly. The processing window at the nozzle is restricted to 250 °C to 270 °C; excursions above 280 °C degrade the flame-retardant system and invalidate the manufacturer-published dielectric strength of 30 kV/mm to IEC 60243-1. End products include high-voltage busbar insulating supports, cell monitoring board mounting frames, and energy storage rack cable-terminal barriers.
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EMS-Grivory Grilamid LV-30H V0 is a 30 % glass-fibre-reinforced polyamide 12 (PA12) injection-moulding grade with a flame-retardant system rated to UL 94 V-0 at 0.8 mm nominal wall thickness. The designation LV identifies the low-viscosity base resin; 30H identifies the 30 % glass-fibre reinforcement and heat-stabilized formulation; V0 identifies the flame-retardant classification. Conditioned data refer to specimens equilibrated under ISO 1110 at 70 °C and 62 % relative humidity until mass stabilisation. The PA12 backbone provides lower saturated moisture uptake than PA6 or PA66 grades, which limits the wet-condition tensile modulus reduction and electrical insulation drift in humid service environments.
Compared with a 30 % glass-filled PA66 V0 grade, the PA12 matrix shifts the property profile toward lower density, lower dry-state heat distortion temperature, and markedly lower saturated moisture absorption. Under ISO 62 immersion at 23 °C, 30 % glass-filled PA12 grades typically show water absorption near 0.7 %, whereas 30 % glass-filled PA66 grades can absorb approximately 2 % to 2.5 %. This difference reduces moisture-induced dimensional growth and wet electrical leakage in connector bodies exposed to condensing humidity. The trade-off is a lower melting point, typically 178 °C, and lower dry-state tensile modulus than PA66/GF30 FR materials. Applications with continuous dry-heat exposure above 120 °C should therefore be evaluated against long-term heat-ageing data rather than short-term HDT values alone.
Before moulding, the pellets must be dried in a desiccant dryer to a residual moisture content below 0.1 %. A drying temperature of 80 °C for 4 to 8 hours is sufficient from sealed packaging. Material exposed to relative humidity above 60 % for more than 4 hours should be re-dried or processed from a dry-air hopper with a dew point of -30 °C or lower. Residual moisture above 0.15 % produces splay, reduces flame-retardant efficacy, and contributes to hydrolysis-induced molecular weight loss in the PA12 matrix.
Melt temperature measured at the nozzle should be maintained between 250 °C and 280 °C. For wall sections below 0.8 mm, the upper end may be required, but residence time at melt temperatures above 270 °C should not exceed 10 minutes. Mould temperature should be held between 80 °C and 100 °C to promote crystallisation, reduce post-mould shrinkage, and stabilise the UL 94 V-0 performance. Screw back pressure in the range 5 to 10 bar (0.5 to 1.0 MPa) is typical on reciprocating screw machines with L/D ratios from 18:1 to 22:1 and compression ratios of 2.0:1 to 2.5:1. Injection speed is set high enough to produce a short shot at 95 to 98 % volumetric fill before transfer to holding pressure. This prevents flash while maintaining a dense glass-fibre-filled skin-core structure.
Regrind addition up to 25 % by weight is common in non-safety-critical production, but any regrind stream must be dry, free of oil, and derived from the same base grade. The flame-retardant system can be diluted by foreign polymers or contaminated regrind. UL 746D long-term thermal-oxidative exposure, flammability, and tracking performance should be re-validated if the regrind fraction exceeds the producer-qualified limit.
Typical published values for natural-grade specimens are provided below. Dry values refer to injection-moulded bars tested immediately after desiccation; conditioned values refer to specimens stored under ISO 1110 until equilibrium. The dry-to-conditioned shift is smaller in PA12 than in PA66 because of the lower equilibrium moisture mass fraction.
| Property | Test method | Dry value | Conditioned value |
|---|---|---|---|
| Density | ISO 1183 | 1.27 g/cm³ | 1.27 g/cm³ |
| Tensile modulus | ISO 527-1/-2 | 8500 MPa | 6500 MPa |
| Tensile strength at break | ISO 527-1/-2 | 125 MPa | 100 MPa |
| Elongation at break | ISO 527-1/-2 | 3.0 % | 4.5 % |
| Charpy notched impact strength | ISO 179-1/1eA | 8.0 kJ/m² | 10.0 kJ/m² |
| Charpy unnotched impact strength | ISO 179-1/1eU | 45 kJ/m² | 40 kJ/m² |
| Heat deflection temperature at 1.8 MPa | ISO 75-2/A | 160 °C | 160 °C |
| Heat deflection temperature at 0.45 MPa | ISO 75-2/B | 175 °C | 175 °C |
| Melting point | ISO 11357-1/-3 | 178 °C | 178 °C |
| Volume resistivity | IEC 62631-3-1 | 1 × 10^12 ohm·m | 1 × 10^11 ohm·m |
| Surface resistivity | IEC 62631-3-2 | 1 × 10^12 ohm | 1 × 10^11 ohm |
| Dielectric strength | IEC 60243-1 | 30 kV/mm | 28 kV/mm |
| Comparative tracking index | IEC 60112 | 600 V | 600 V |
| Water absorption at saturation | ISO 62 | 0.7 % | 0.7 % |
| Standard or directive | Test or scope | Typical result or status |
|---|---|---|
| UL 94 | Flame classification | V-0 at 0.8 mm |
| IEC 60112 | Comparative tracking index | 600 V |
| IEC 60664-1 | Creepage and clearance coordination | Component evaluation required after housing design |
| EU 2015/863 | RoHS recast hazardous substances | Producer declaration required for final colour batch |
| REACH | SVHC screening | Supplier certificate required for lot-specific compliance |
Halogen-free status is typical for this product line, but certification must be confirmed with the supplier for the specific supplied colour, regrind content, and batch. In electrical enclosures, the combination of CTI 600 V and UL 94 V-0 at 0.8 mm supports reduced creepage and clearance distances under IEC 60664-1 only if the final moulded part demonstrates the same rating after colour masterbatch addition, weld-line formation, and gate-frosting.
In automotive and appliance connectors exposed to salt spray, fuels, and high humidity, substitution of PA12/GF30 V0 is evaluated when service temperature remains below 120 °C continuous and when dimensional stability under moisture is more important than dry-heat stiffness. The PA12 matrix absorbs less water than PA66; therefore, snap-fit retention and contact normal force show less seasonal variation in coastal or condensing environments. However, PA66/GF30 FR typically exhibits higher dry tensile modulus and higher heat deflection temperature at 1.8 MPa. A direct replacement without geometry modification is not always possible if the part relies on beam stiffness at elevated battery-pack temperatures.
Failure modes specific to thin-wall electrical housings include short shots at weld lines behind pin arrays and gas-burn streaks when the melt front stalls. Mould-filling simulations should use pressure-volume-temperature data for the dry and conditioned states, not only dry-state viscosity. On production-scale electric injection moulding machines with 1200 kN clamp force and hot-runner valve gates, the low-viscosity base permits filling of wall sections down to 0.6 mm at melt temperatures near 280 °C. The glass-fibre orientation at the gate creates anisotropic shrinkage; tool trials are required to establish gate freeze time and holding pressure for flatness-critical connector bodies.
Chemical resistance of PA12 to aliphatic hydrocarbons, hydraulic and brake fluids, zinc chloride road salt, and dilute acids under ISO 175 immersion is a primary reason for selecting this grade in fuel-system clips and sensor brackets. Stress-cracking resistance under constant strain in aggressive media should be tested at the end-use preload because glass-fibre orientation and weld lines create localised stress concentrations that are not captured by standard test bars.
PA12/GF30 V0 shows lower moisture-induced dimensional change than PA66/GF30 FR, but fuel and oil absorption can cause temporary swelling of 0.1 % to 0.3 % depending on exposure temperature and media. Clamped metal-polymer joints lose preload if the polymer swells. Joint relaxation should be verified by torque-decay testing at 85 °C and 85 % relative humidity for 1000 hours following ISO 291 or the end-user accelerated ageing protocol. The first stage of moisture uptake at the surface controls short-term contact force loss; the slower diffusion-limited stage controls long-term creep after saturation.
Material should not be combined with amine-based colour concentrates or high-pH additives because transamidation or flame-retardant package interactions may shift UL 94 performance and melt viscosity. Similarly, copper-bearing inserts in contact with molten PA12 can accelerate oxidative degradation; nickel-plated or stainless inserts are preferred for long-term service. Processing with a moisture-impermeable sealed hopper, short hot-runner residence time, and documented barrel-temperature calibration is expected to reduce batch-to-batch variation in flame-retardant performance. Published data for specific colour-matched, regrind-containing configurations is limited; end-use validation under the production tool conditions remains necessary for safety-critical electrical and fuel-contact components.
