| HS Code | 296000 |
| Glass Fiber Content | 30% |
| Density | 1.23 g/cm³ |
| Water Absorption 24h 23 C | 0.3% |
| Melting Temperature | 178 °C |
| Glass Transition Temperature | 50 °C |
| Tensile Modulus | 7000 MPa |
| Tensile Strength At Break | 120 MPa |
| Elongation At Break | 3% |
| Flexural Modulus | 6500 MPa |
| Charpy Notched Impact Strength 23 C | 16 kJ/m² |
| Heat Deflection Temperature 1 8 Mpa | 150 °C |
| Vicat Softening Temperature | 165 °C |
As an accredited Evonik VESTAMID® L-GF30 black E70285 Nylon 12, 30% Glass Fiber Filled factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Evonik VESTAMID® L-GF30 black E70285 nylon 12, 30% glass fiber filled, supplied in 25 kg moisture-protective bags. |
| Container Loading (20′ FCL) | 20′ FCL loaded with Evonik VESTAMID® L-GF30 black E70285 Nylon 12 (30% glass fiber) in sealed bags on pallets. |
| Shipping | VESTAMID® L-GF30 ships as non-hazardous thermoplastic pellets in sealed, moisture-resistant bags or drums. Keep dry to prevent moisture absorption; store away from direct heat. Suitable for standard truck, rail, or sea freight. Avoid puncturing packaging and handle with care to maintain product integrity. |
| Storage | Store VESTAMID® L-GF30 in its original sealed packaging in a cool, dry area. Protect from moisture, direct sunlight, and heat sources; ideal storage temperature is below 30°C. Keep containers tightly closed to prevent humidity absorption. Under these conditions, shelf life is typically two years from production date. |
| Shelf Life | Shelf life is approximately 2 years when stored cool, dry, and sealed in original packaging to prevent moisture uptake. |
At the compressed-air preparation stage of heavy-duty commercial vehicles, VESTAMID® L-GF30 black E70285 is processed as a 30% glass-fibre-filled nylon 12 compound for relay valve bodies, pressure-regulator end caps and air-dryer mounting brackets. The material must be dried to a residual moisture below 0.1% before melt processing; desiccant dryers set at 80°C with 4 h to 6 h residence are specified when plant relative humidity exceeds 60%. The drying hopper dew point is held below -40°C. Barrel temperatures are profiled from 230°C at the feed throat to 250°C at the nozzle, with a melt-temperature limit of 260°C measured by an immersion pyrometer. Mould temperature is controlled between 60°C and 80°C to encapsulate the glass fibres and reduce surface roughness. Hold pressure on production tools normally falls between 60 MPa and 80 MPa; hold-pressure time is set to gate freeze during mould filling. Screw geometry matters in this application: a general-purpose three-zone screw with 20:1 L/D ratio and a ring non-return valve is adequate, but low-compression screws are preferred because high-compression zones break glass fibres and reduce Charpy notched impact values obtained under ISO 179-1/1eA at -40°C. Melt residence time above 10 min at melt temperature above 250°C produces visible surface splay and shifts the ductile-to-brittle transition. Weld lines in pressure-bearing regions are relocated by gate changes or overflow wells; a knit line normal to the hoop stress direction can reduce burst pressure retention. Part marking follows ISO 11469 as PA12-GF30. Mechanical property validation for production batches uses ISO 527-1/-2 for tensile modulus, ISO 178 for flexural modulus, and ISO 75-2 method A for heat deflection temperature at 1.8 MPa. Chemical stress-cracking resistance in road-deicing chloride media is evaluated by OEM-specific immersion tests rather than a single ISO method; the nylon 12 matrix is specified because glass-filled PA12 tolerates chloride-induced environmental stress cracking more consistently than glass-filled PA66. The black E70285 colour contains carbon black for UV resistance, but the compound is not an intrinsically conductive grade and must not be used for ATEX/IEC 60079-0 electrostatic dissipation without additional validation. Terminal components are relay valve housings, pressure-regulator caps and air-dryer mounting brackets.
Fuel quick-connector bodies in gasoline and diesel systems are moulded with VESTAMID® L-GF30 black E70285 because the 30% glass phase raises hoop stiffness and lowers cold-flow under continuous clamp loads. Drying at 80°C to below 0.1% residual moisture is mandatory; residual moisture above 0.15% causes hydrolysis in the barrel and splay on the seal face. Cylinder settings from 235°C to 255°C and mould temperatures from 50°C to 70°C are used for connector bodies with wall thickness from 1.8 mm to 3.5 mm. The gate type and location control glass fibre orientation: a single sub-gate on the connector axis produces longitudinal alignment that improves burst pressure retention, while transverse orientation reduces elongation at break under ISO 527-2. Knit lines are moved away from retainer ears and seal grooves by short-shot analysis; the presence of exposed glass at a knit line reduces low-temperature impact when tested to ISO 6603-2 at -30°C. Fuel immersion validation follows SAE J1681 surrogate fuels and additional OEM flex-fuel blends; long-term heat and fuel exposure data are generated for each connector geometry because the material test certificate alone does not substitute for assembled component validation. Shrinkage anisotropy determined by ISO 294-4 is applied to core and cavity tool compensation; core pin dimensions are corrected from measured flow-direction and transverse-direction shrinkage data instead of a fixed material-specific offset. Regrind content is limited to 15% by weight for pressure-bearing connector bodies, and reclaimed material must be dried to the same moisture specification as virgin compound. The black grade is stabilised for underbonnet temperatures, but continuous service above 120°C requires verification of oxidative embrittlement under ISO 188. This compound is not the primary fuel permeation barrier; sealing is assigned to the O-ring and the barrier layer, while the glass-filled PA12 body carries mechanical load and maintains dimensional alignment. Terminal components are quick-connector bodies, fuel pump flanges and evaporative emission canister mount brackets.
Pneumatic solenoid manifold bases produced from VESTAMID® L-GF30 black E70285 are specified for compressed-air distribution systems in rail brake panels and automated assembly machinery. The part geometry often includes a 120 mm flow-channel envelope with flatness tolerance of 0.10 mm over the sealing face; this drives tooling strategy more than material selection alone. The material is dried at 80°C to below 0.1%, then injected with a barrel profile from 230°C to 250°C and mould temperature from 50°C to 70°C. Sequential valve gating on a two-plate tool is used to control glass-fibre orientation and reduce warpage caused by anisotropic shrinkage; flow-direction and transverse-direction shrinkage data from ISO 294-4 are used for cavity correction. Water absorption after 24 h immersion under ISO 62 is used as a comparator against glass-filled PA66; the PA12 matrix in VESTAMID® L-GF30 black E70285 is selected where lower moisture uptake stabilises sealing-face flatness under humid compressed-air dew points from -40°C to +26°C. Flammability classification is documented through the supplier material certificate and must be re-verified at the production wall thickness under UL 94; glass-filled PA12 grades are not automatically assigned a V-2 rating. REACH and RoHS 2011/65/EU compliance is documented through the supplier material declaration. The material should not be combined with amine-based processing aids or regrind from unrelated PA66 streams; such contamination alters crystallisation and reduces impact performance. Regrind content is limited to 20% by weight for non-safety-critical manifold bases, and only when the reclaimed material is dried to the same moisture specification. Terminal products are solenoid adapter plates, manifold sub-bases and pressure-switch mounting blocks.
Bearing cages and thrust washers in water-lubricated pumps are direct injection-moulded from VESTAMID® L-GF30 black E70285 because the nylon 12 matrix absorbs less water than PA6 or PA66 alternatives under ISO 62 saturation at 23°C. Fibre length retention is the controlling variable. High-compression screws with 2:1 compression ratio and 20 mm diameter typically reduce glass fibre length more than low-compression screws with 2.5:1 compression ratio; lower retained fibre length reduces notched Charpy impact strength when tested under ISO 179-1/1eA at -30°C. Melt temperature above 260°C and residence times exceeding 10 min in the barrel increase matrix degradation and shift the ductile-to-brittle transition. Drying at 80°C to below 0.1% moisture is necessary before moulding. Mould temperature from 60°C to 80°C improves glass encapsulation at the surface and reduces exposed fibre ends at sharp edges. Bearing cages with thin radial ribs require gating optimised by short-shot studies; fibre orientation normal to a rib raises local stiffness but creates a shear plane under reversing pump load. The material is suitable for water-lubricated service in a pH range from 4 to 9 and at continuous operating temperature up to 80°C; strong mineral acids and oxidizing media cause surface degradation and must be excluded. Pump-specific endurance validation is performed under the pump manufacturer's test protocol; material-level data alone do not replace assembled pump life testing. Terminal products are bearing cages, thrust washers and wear rings in residential and industrial water pumps.
Charge-air pipe retaining brackets and fluid-reservoir clips moulded from VESTAMID® L-GF30 black E70285 operate in underbonnet environments with short-term surface temperatures up to 120°C and mechanical vibration. Wall thickness from 2.0 mm to 4.0 mm is maintained to limit flow-length-induced glass depletion at the melt front; the gate is placed at the stiffest feature so that the glass-poor leading edge does not form the snap-fit hinge or clamp surface. Pre-drying at 80°C for a minimum of 4 h in a desiccant dryer reduces moisture below 0.1% and prevents surface splay. Barrel temperatures from 230°C to 250°C and mould temperatures from 50°C to 70°C are normal for these part sizes. Retention force and flexural modulus are checked using ISO 527-2 and ISO 178; puncture impact at -40°C is evaluated under ISO 6603-2. Heat ageing is conducted under ISO 188 at 100°C or 120°C depending on the vehicle platform; the black E70285 stabilisation system resists oxidative embrittlement but must be re-qualified if the part is exposed to hot oil spray. The compound should not be used for thin snap-fit clips below 1.5 mm when glass fibres align transverse to the clip hinge because repeated flexure cracks nucleate at exposed glass ends. Terminal products are charge-air duct brackets, coolant reservoir clips and transmission breather retainers.
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Evonik VESTAMID® L-GF30 black E70285 Nylon 12, 30% Glass Fiber Filled is classified under ISO 1043-1 as PA12-GF30. The matrix is polyamide 12 produced from laurolactam, and the reinforcement is short glass fiber rather than continuous fiber or long-glass pellet. The E70285 suffix identifies the black-pigmented production specification and its associated additive package. The nominal glass-fiber loading is 30 % by mass. Density determined under ISO 1183-1 is typically 1.22–1.25 g/cm³, depending on fiber length distribution, void content, and pigmentation. Ash-content verification for filler content is commonly performed in accordance with ISO 3451-1.
The defining technical property of this grade is the combination of PA12 chemistry with high fiber reinforcement. Because PA12 has a lower amide-group density than PA6 or PA66, saturated water absorption under ISO 62 is approximately 1.0–1.5 %, compared with roughly 5.0–6.5 % for PA6-GF30 and 4.5–5.5 % for PA66-GF30. That moisture-uptake difference is the primary specification driver in components requiring clearance stability, snap-fit force retention, or dielectric consistency across seasonal humidity cycles. The glass fiber raises elastic modulus and heat deflection temperature, but it reduces elongation at break and increases anisotropic shrinkage compared with unreinforced VESTAMID L.
Dry tensile modulus measured under ISO 527-2 with type 1A specimens at 23 °C is typically between 8,000 MPa and 9,500 MPa. Unfilled VESTAMID L, by comparison, is generally reported near 1,400–1,600 MPa. After conditioning at 23 °C and 50 % relative humidity to equilibrium, tensile modulus of the glass-filled grade is commonly in the 5,500–6,500 MPa range. Tensile stress at break in dry molded specimens is typically 120–140 MPa, while conditioned values fall to approximately 80–100 MPa. Elongation at break is constrained to roughly 4–6 % in the dry state because the fiber reinforcement limits matrix yielding. Charpy notched impact strength under ISO 179-1/1eA at 23 °C is approximately 12–16 kJ/m²; at -30 °C, values decrease to roughly 8–12 kJ/m². Flexural modulus under ISO 178 is typically 6,500–7,600 MPa, although interlaboratory variation for glass-reinforced specimens is wider than for unfilled polyamide 12.
Heat deflection temperature under ISO 75-2 Method A at 1.8 MPa is typically 160–170 °C for dry specimens. Method B at 0.45 MPa approaches 170–175 °C. The melting temperature determined by differential scanning calorimetry under ISO 11357-3 is approximately 176–180 °C. These values are short-term test temperatures and do not constitute a continuous-use temperature rating. Long-term thermal aging behavior depends on wall thickness, oxygen exposure, additive stabilization, and applied mechanical load.
Pre-drying of VESTAMID L-GF30 is required when residual moisture exceeds 0.1 % by weight. Desiccant drying at 80 °C for 4–8 h is standard practice. Air-circulating tray dryers may be insufficient when ambient relative humidity is above 60 %, because PA12 surface moisture pickup is rapid. Moisture levels above 0.2 % typically produce silver streaking, internal porosity, and a measurable reduction in weld-line strength. Production molders commonly verify moisture by Karl Fischer titration or thermogravimetric moisture analysis rather than visual inspection alone. On injection-moulding lines with three-zone screw geometry and shut-off nozzles, melt-temperature settings between 230 °C and 280 °C are typical. The lower end is used for thin-wall parts with high shear heating, while the upper end is reserved for thick sections requiring longer flow length. Mold surface temperature should be held between 60 °C and 90 °C to promote crystallization and reduce anisotropic shrinkage. Mold temperatures below 40 °C can increase surface fiber pattern and weaken weld lines. Plasticating back pressure is typically set between 0.5 MPa and 1.5 MPa, with injection speed adjusted to avoid premature freeze-off at the gate.
Glass-fiber orientation follows the melt-front flow direction. This creates shell-core stratification in molded plaques: tensile modulus is higher along the flow direction and lower transverse to flow. Weld lines are depleted of continuous fiber bridging and must be positioned in low-stress regions by gate placement. Incoming-lot viscosity variation in VESTAMID L-GF30 influences filling pressure more than minor drying differences. As a result, production molders often monitor melt volume-flow rate under ISO 1133-1 at 250 °C with a 10 kg load as an incoming-lot control check.
Polyamide 12 retains hydrolysis resistance in glass-reinforced form because the amide bond concentration is lower than in PA6 or PA66. In coolant-contact components, continuous exposure to 50/50 glycol/water mixtures above 100 °C requires part-level validation under pressure-ageing conditions. The grade is generally resistant to aliphatic and aromatic hydrocarbons, oils, greases, and alkaline cleaners, but strong mineral acids, phenolic compounds, and certain oxidizing agents degrade the matrix. Chlorinated solvents can swell PA12 and reduce glass-matrix interfacial adhesion, particularly at sharp corners and weld lines. Compared with PA66-GF30, the material is less sensitive to stress cracking in calcium chloride and sodium chloride brines, but resistance is not unlimited. When load-bearing components are exposed to road-salt slurries for more than 1,000 h, published data for this specific configuration is limited; component-level environmental stress-cracking tests under simulated field loading are required.
Hydrolysis in neutral aqueous media is generally slow below 100 °C. Above that threshold, hydrolysis accelerates with time and wall thickness. Glass-matrix interface degradation can become the limiting mechanism because water migrates along the fiber interface rather than solely through the polymer bulk. No chemical compatibility statement should be extrapolated to all service loads, because crack propagation under chemical attack is load-dependent and geometry-dependent.
The material is electrically insulating. Volume resistivity under IEC 62631-3-1 is typically above 10^12 Ω·m for dry specimens; humidity reduces surface resistivity but does not confer conductive function. Dielectric strength under IEC 60243-1 at 1 mm thickness is typically 20–30 kV/mm dry, although the exact value depends on specimen thickness, conditioning state, and fiber orientation. Comparative tracking index is generally above 500 V under IEC 60112. The coefficient of linear thermal expansion in the flow direction is typically 2.0 × 10^-5 K^-1 to 3.0 × 10^-5 K^-1; transverse values can approach 7.0 × 10^-5 K^-1. This anisotropy must be accounted for in dimensionally linked assemblies. Water uptake at 23 °C saturation under ISO 62 is 1.0–1.5 %; after 24 h immersion, uptake is generally below 0.5 %. Dimensional change after saturation is not zero; fully saturated thick sections may grow 0.1–0.3 %.
On production lines for pneumatic valve bodies and electro-hydraulic housings, VESTAMID L-GF30 is processed in multi-cavity tools with valve-gated hot runners. The principal failure modes observed in practice are not bulk pressure rupture but subzero impact near threaded bosses and weld-line cracking under assembly stress. When threads are molded rather than machined, a minimum thread root radius of 0.3 mm is common to reduce crack initiation. In bearing-bore geometries, glass-fiber orientation can create ovality above IT10 if the gate is not centered; post-machining is often required for high-precision bores. This is not a resin defect but a consequence of high reinforcing-fiber aspect ratio and differential crystallization shrinkage.
PA6-GF30 and PA66-GF30 may show higher dry tensile strength and higher heat-aging resistance in some under-hood environments, but their saturated water absorption under ISO 62 is approximately 5.0–6.5 %. VESTAMID L-GF30 saturates at approximately 1.0–1.5 %. In conditioned service, the glass-filled PA12 grade therefore retains a larger fraction of its dry tensile modulus. Its notched impact strength is moderate rather than exceptional. Sections below 1.5 mm can exhibit brittle fracture in snap-fit designs because the glass fiber reduces matrix ductility. For snap-fit structures requiring repeated assembly, unreinforced PA12 or glass-bead-filled PA12 may be more suitable. The black E70285 grade is not an electrically conductive compound; electrostatic dissipation requires an antistatic or carbon-based VESTAMID grade. In sliding contact with steel, PA12-GF30 has lower dry wear than unfilled PA12 at low pressure-velocity, but the glass fiber is abrasive against soft counterfaces. Hardened steel shafts or anodized aluminum counterfaces are specified.
| Framework | Standard designation | Boundary of typical declaration |
|---|---|---|
| Material identification | ISO 1043-1 | PA12-GF30 |
| Density | ISO 1183-1 | Method A immersion |
| Tensile properties | ISO 527-2 | 1A specimen, 23 °C |
| Charpy impact | ISO 179-1 | 1eA notched, 23 °C |
| Heat deflection | ISO 75-2 | Method A, 1.8 MPa |
| Water absorption | ISO 62 | 24 h, 23 °C |
| EU restriction | RoHS 2011/65/EU | Candidate-list declaration required |
| EU chemical framework | REACH 1907/2006 | Substance compliance by supplier |
These values are typical engineering references, not guaranteed specification limits. Released batch certificates under ISO/IEC 17025 may include narrower lot-specific ranges for melt volume-flow rate and filler content. Glass-fiber weight fraction is controlled within approximately ± 2 % of the 30 % nominal by ashing and gravimetric analysis, but fiber length distribution depends on compounding parameters. Field failures in dynamic applications are generally dominated by geometric stress concentration rather than bulk resin deficiency. The compound is not intended for medical implants; biocompatibility and food-contact suitability must be confirmed per grade and application.
