| HS Code | 177505 |
| Material | PA12-GD30 Nylon 12, 30% Glass Fiber Filled |
| Density | 1.23 g/cm³ |
| Melting Point | 178 °C |
| Tensile Modulus | 9000 MPa |
| Tensile Stress At Break | 120 MPa |
| Tensile Strain At Break | 3% |
| Flexural Modulus | 8600 MPa |
| Flexural Strength | 160 MPa |
| Charpy Impact Strength Notched | 10 kJ/m² |
| Charpy Impact Strength Unnotched | 60 kJ/m² |
| Heat Deflection Temperature At 1 80 Mpa | 165 °C |
| Vicat Softening Temperature | 170 °C |
| Water Absorption 24h | 0.2% |
As an accredited Evonik VESTAMID® L1930 black 9.7503 | PA12-GD30 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 | Supplied as 25 kg net moisture-proof polyethylene bags of black PA12-GD30 granules, 30% glass-fiber filled for processing. |
| Container Loading (20′ FCL) | 20′ FCL loading of Evonik VESTAMID® L1930 black PA12-GD30: 30% glass-filled nylon pellets, palletized and secured for safe transport. |
| Shipping | This product ships in sealed, moisture-resistant packaging to preserve its properties. Store in a cool, dry area away from direct sunlight. Ensure adequate ventilation during transport. Handle with standard industrial care to avoid dust accumulation and contamination. For detailed transportation and regulatory information, consult the safety data sheet. |
| Storage | Store in 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. Ideal temperature: below 25°C. Avoid exposure to humidity, as PA12 absorbs moisture, which can affect processing. Use within one year of receipt for optimal performance. |
| Shelf Life | Shelf life is typically two years from shipment if stored unopened, cool, and dry, protected from moisture. |
VESTAMID® L1930 black 9.7503 is assigned to injection-moulded pneumatic connector bodies, manifold blocks and threaded adaptors where continuous pressurisation and cyclic temperature changes rule out unfilled PA12. The 30 wt% glass fibre phase alters three simultaneous variables: weld-line strength, thread relaxation and moisture-dependent dimensional movement. On a 1,000 kN hydraulic injection-moulding machine with a 22:1 L/D three-zone screw, the melt temperature for this filler loading is normally held between 240 °C and 260 °C; the mould temperature is set at 60 °C to 90 °C to control wall crystallinity while avoiding sink at the thread roots. Pre-drying at 80 °C for 4 h to 6 h in a desiccant dryer with a supply dew point of −30 °C or lower reduces residual moisture to below 0.1%; moisture left above that threshold hydrolyses the PA12 melt and produces visible splay around the gate land. Injection pressure typically rises to 60 MPa to 80 MPa at the transfer position because the glass fibres increase apparent melt viscosity; screw recovery time per shot is therefore longer than unfilled PA12 at equal shot weight. A single edge gate or a tab gate is preferred over multiple pin gates. Multiple gates generate knit lines in which glass fibres orient perpendicular to the melt flow and notched impact resistance drops sharply; the exact loss is tool-specific and must be measured on moulded specimens cut from the same gate configuration.
Finished pneumatic fittings are validated under ISO 14743:2004, which specifies leakage decay, pull-out resistance and temperature cycling on the assembled connection rather than on raw material test bars. The compound itself carries the designation PA12-GD30 with a nominal glass content of 30 wt%; REACH and 2011/65/EU RoHS declarations apply to the supplied formulation. The terminal products are G 1/8, G 1/4 and G 3/8 bodies, M5 to M12 push-in fittings, and multi-port manifold blocks for compressed air lines up to the pressure class defined by the fitting standard. Screw and barrel wear on production equipment is controlled with a bimetallic barrel liner and hardened check ring; glass fibre turbulence at the non-return valve seat is a known maintenance issue.
Corrugated harness protection conduit is extruded from VESTAMID® L1930 black 9.7503 through a single-screw corrugator line. The 30 wt% glass fibre phase raises melt viscosity and reduces melt draw, so the die gap is set 0.2 mm to 0.4 mm wider than for an unfilled PA12 grade of the same wall thickness to prevent longitudinal splitting at the corrugation crest. Barrel temperatures are profiled from 220 °C at the feed section to 260 °C at the metering zone, with melt temperature capped at 270 °C; residence times above 15 min degrade the heat stabiliser and shift the black colour. The terminal end product is a rigid-flexible protective sleeve used around engine-compartment cable bundles, hydraulic pilot lines and sensor harnesses in heavy-duty vehicles, agricultural tractors and construction excavators. Low-temperature impact after conditioning at −40 °C is checked in accordance with ISO 179-1/1eU; published data for this exact corrugated construction is limited, so lot release testing includes a specific bore-collapse test at the specified cold temperature rather than relying on a generic raw-material data sheet.
In this extrusion route, the formulation ratio is fixed by the compound designation: 30 wt% glass fibre in a PA12 matrix. Downstream blending with unfilled PA12 regrind is not governed by a single global threshold because fibre length attrition and screw work during recycling change the effective content; instead, the blend is evaluated by measuring notched Charpy impact on moulded plaques and by checking belt pull-out force on the formed conduit. The PA12 matrix absorbs less moisture than PA6 or PA66 at saturation according to ISO 62; the glass phase further reduces absolute linear growth in humid engine-compartment air, which stabilises the inner diameter for cable insertion.
Substitution of a zinc alloy cooling manifold by VESTAMID® L1930 black 9.7503 changes the failure mode from metal fatigue and dezincification to hoop-stress retention and creep under hot water-glycol exposure. The glass content of 30 wt% increases tensile modulus and reduces creep relative to unfilled PA12, but the anisotropic shrinkage of the filled melt forces the tool design to use different shrinkage factors for the flow and transverse axes; flow-direction shrinkage for 30% glass-reinforced PA12 is typically in the range of 0.1% to 0.3%, while transverse shrinkage can reach 0.5% to 0.8%, although cavity-specific measurements are required because local fibre orientation changes at ribs and core pins. Mould temperature is held at 80 °C to 100 °C to raise crystallinity and minimise post-mould dimensional movement in hot service. Melt temperature is kept between 250 °C and 270 °C; injection velocity is adjusted to avoid shear rates above 50,000 s−1 at the gate, because fibre breakage in the gate land lowers burst pressure and increases the scatter of hydrostatic test results.
The end products are industrial cooling loop manifolds, thermostat housings and pump volutes for water-glycol circuits; these components are not automatically certified for potable water. If drinking-water contact is required, a separate certified formulation is necessary; the black pigmentation and glass reinforcement do not by themselves substitute for a materials approval. Mechanical validation on dry-as-moulded and conditioned plaques is performed according to ISO 527-2 for tensile modulus and ISO 75-2/A for heat deflection temperature; notched Charpy impact is evaluated under ISO 179-1/1eA. Component-level tests apply thermal shock from −20 °C to 120 °C followed by hydrostatic pressure at 1.2 MPa and 95 °C to the customer specification. Published burst-pressure values for this material in this exact manifold configuration are limited; they must be established on prototypes because gate location and wall thickness override the raw-material short-term strength alone.
Guides and wear plates for textile machinery are machined from extruded VESTAMID® L1930 black 9.7503 rectangular stock. The 30 wt% glass fibre phase increases compressive modulus and creep resistance under bolt preload; the same filler raises the abrasiveness of the finished surface against soft aluminium or unhardened steel. In lubricated sliding applications, PA12-GD30 is selected when dimensional stability in humid weaving rooms is more important than obtaining the lowest possible friction coefficient. The compound is verified by TGA under ISO 3451-1 method A for glass content and by ISO 604 compressive strength on samples from the extruded profile. Machining uses carbide-tipped tools with a positive rake and cutting speed below 300 m/min to limit heat-induced smearing of the PA12 matrix; water-mist cooling is avoided when downstream hot-plate welding is planned because absorbed moisture creates steam pores in the weld zone. The terminal products include chain tensioners, guide strips and spacer plates in loom frames.
Injection-moulded circular connector bodies, cable glands and terminal housings are produced from VESTAMID® L1930 black 9.7503 where thread tolerances must survive temperature and humidity changes without excessive dimensional shift. The 30 wt% glass fibre phase lowers the coefficient of linear thermal expansion relative to unfilled PA12 and increases the tensile modulus of the threaded section. Melt temperature is set between 240 °C and 270 °C; mould temperature is maintained at 60 °C to 90 °C. Slow injection in thick sections is avoided because the filled melt solidifies quickly and creates an oriented skin layer over a more randomly oriented core; the resultant differential shrinkage can warp the housing after ejection. Metal inserts are preheated to 80 °C to 120 °C before insertion overmoulding to reduce radial shrinkage stress and prevent microcracks around the insert.
Electrical safety is evaluated on the finished component under the applicable insulation coordination standard; the raw compound does not automatically confer a glow-wire rating. Material-level comparisons are performed under IEC 60112 for comparative tracking index and IEC 60695-2-11 for glow-wire ignition temperature; published results for this exact black grade should be sourced from the supplier’s technical information before certification. The terminal end products are strain-relief cable glands, industrial sensor connectors, and terminal boxes in railway, marine and automation installations where condensation, vibration and wide ambient temperature ranges are present.
Robot end-of-arm tooling plates and locator blocks are machined from extruded PA12-GD30 sheet instead of aluminium when the moving mass contributes to the drive load of a collaborative robot. The 30 wt% glass fibre phase provides flexural modulus measured according to ISO 178, but the lower material density forces a thicker section to reach equivalent stiffness, so the natural frequency of the end effector must be calculated from the assembled geometry rather than copied from a metallic design. The extruded sheet is annealed at 150 °C for 2 h to 4 h before machining; without this relaxation step, internal frozen-in stresses from sheet cooling can cause a machined slot to close inward after material removal. Bolted joints are designed to stay below the compressive creep threshold of the glass-filled matrix; threaded inserts or through-holes are used rather than self-tapping screws in high-load locations.
The assembled end effector is evaluated under EN ISO 10218-1:2011 as a system-level robot safety requirement; the material contribution is limited to documented mechanical properties. If the assembly is used in a potentially explosive atmosphere, the completed end effector must be separately assessed under 2014/34/EU ATEX; the raw compound is not certified for food contact or for direct drinking-water contact. The terminal products include vacuum gripper adapter plates, camera mounting brackets and cable management arms on robotics cells.
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Evonik VESTAMID® L1930 black 9.7503 is a polyamide 12 compound designated PA12-GD30 under ISO 1043-1, containing 30% short-glass-fiber reinforcement by mass dispersed in a semicrystalline polyamide 12 matrix. The black 9.7503 designation identifies the producer’s color/batch code; it does not supersede the base polymer designation or independently certify additional stabilization. Supplied as granules for injection molding and profile extrusion, the material is specified for components requiring lower moisture uptake than PA6 or PA66 glass-fiber compounds, retention of impact strength below −40 °C, and resistance to aliphatic hydrocarbon environments. Product-specific certificates of analysis should be referenced for batch-level values under ISO 1183-1, ISO 527-1/−2, ISO 179/1eA, ISO 75-1/−2, and ISO 1133-1:2022.
Across compressed-air coupling bodies, cable protection conduits, and fuel-vapor management parts, substitution of glass-filled PA6 or PA66 by PA12-GD30 is evaluated primarily through moisture-conditioned mechanical property retention and dimensional stability between 10% and 90% relative humidity. The PA12 matrix absorbs approximately 1.1%–1.5% water at saturation per ISO 62, compared with 6%–7% for PA6 GF30 and 5%–6% for PA66 GF30. This lower equilibrium moisture content reduces hygroscopic swelling and minimizes post-molding property shift in humid operating conditions. In dry-as-molded tensile testing to ISO 527-2, representative PA12-GD30 grades exhibit tensile modulus in the range of 6,000–7,200 MPa, while 30% glass-filled PA6 and PA66 often reach 8,000–10,000 MPa; the trade-off is therefore accepted where moisture stability and low-temperature ductility carry greater functional weight than absolute stiffness. Notched Charpy impact at 23 °C evaluated to ISO 179/1eA falls generally between 10–14 kJ/m² for PA12-GD30, but the material often shows more gradual impact decay at −30 °C than short-glass PA66. These ranges are representative for short-glass polyamide families and are not a substitute for producer lot-specific data.
Melt preparation of PA12-GD30 on a general-purpose single-screw extruder with an L/D ratio of 24:1 and a three-zone screw with a 2:1 compression ratio begins with dehumidified-air pre-drying at 80 °C for 4–6 h to a residual moisture target below 0.1% by mass, with desiccant bed dew point maintained at or below −30 °C. The crystalline melting point of the PA12 matrix, as determined by ISO 11357-3, lies near 176 °C; recommended nozzle melt temperature is 230–250 °C. Thermal exposure above 260 °C accelerates polymer chain scission and degradation of the glass-fiber sizing, producing volatile oligomers, black specks, and loss of fiber-matrix interfacial adhesion. The practical residence time at the upper melt-temperature limit should not exceed 5–8 min in screw, adapter, hot-runner manifold, and nozzle volumes combined. Screw speed during compounding is not limited by plastication but by fiber attrition; for moderate-shear general-purpose screws, 40–80 min⁻¹ maintains dispersion while limiting glass-fiber length reduction. Injection molding should apply injection pressures from 80–120 MPa on general-purpose hydraulic machinery of suitable clamp force, with hold pressure at 50–70% of peak injection pressure and mold wall temperature from 40 °C to 80 °C. The lower mold-temperature boundary restricts post-mold crystallization and can produce under-dimensioned parts when combined with fast cooling; the upper boundary improves glass wet-out and surface gloss but raises cycle time. Hot-runner systems with internally heated torpedo tips or abrupt channel expansions create stagnation zones that increase residence-time dispersion and should be avoided for this viscosity class.
For injection-molding simulation, the melt viscosity of PA12-GD30 is shear-rate dependent and is influenced by fiber length distribution after plastication. Capillary rheometry to ISO 11443 at 240 °C typically shows shear-thinning across apparent shear rates from 100 s⁻¹ to 5,000 s⁻¹; longer glass fibers increase low-shear viscosity more than high-shear viscosity. Cross-WLF or modified Carreau parameters should be fit from capillary and rotational rheometry on the specific black 9.7503 lot, because black pigments and fiber sizing contribute to the thermal-viscosity shift. Published data for this specific configuration is limited in open databases; therefore mold-filling simulations without producer-derived viscosity curves can underpredict filling pressure in thin ribs. Screw-torque increases relative to unfilled PA12 by approximately 20–40% at equivalent mass rate, and extruder barrels with bimetallic liners are preferred to limit wear from glass-fiber feedstock.
Conditioning to equilibrium in humid environments shifts the property envelope less for PA12-GD30 than for PA6 or PA66 equivalents. After immersion in 23 °C water to saturation per ISO 62, tensile-modulus retention of PA12-GD30 is typically higher than that of glass-filled PA6, but specific percentage retention values for VESTAMID L1930 black 9.7503 should be confirmed against the producer’s datasheet because conditioning time, specimen thickness, and fiber orientation alter the result. Linear coefficient of thermal expansion for 30% short-glass PA12 in the flow direction, measured by ISO 11359-2, commonly lies between 25 × 10⁻⁶ K⁻¹ and 40 × 10⁻⁶ K⁻¹, which is roughly one-quarter to one-third of unfilled PA12. Mold shrinkage for injection-molded plaques is anisotropic; representative values are 0.2%–0.6% in the flow direction and 0.5%–1.0% transverse, depending on gate geometry, wall thickness, and mold temperature. These dimensional metrics support integration into metal-overmolded assemblies where interference fits are specified, provided that the part design accounts for anisotropy.
| Test property | Method | PA12-GD30 | PA6 GF30 | PA66 GF30 |
|---|---|---|---|---|
| Density, g/cm³ | ISO 1183-1 | 1.23–1.25 | 1.35–1.38 | 1.36–1.39 |
| Tensile modulus, dry-as-molded, MPa | ISO 527-1/−2 | 6,000–7,200 | 8,500–10,000 | 8,000–9,500 |
| Tensile stress at break, dry-as-molded, MPa | ISO 527-1/−2 | 95–115 | 150–180 | 160–190 |
| Elongation at break, dry-as-molded, % | ISO 527-1/−2 | 3–5 | 2–4 | 2–3 |
| Charpy notched impact, 23 °C, kJ/m² | ISO 179/1eA | 10–14 | 10–15 | 9–12 |
| Water absorption at saturation, % | ISO 62 | 1.1–1.5 | 6.0–7.0 | 5.0–6.0 |
| Heat deflection temperature, 1.8 MPa, °C | ISO 75-1/−2 | 160–175 | 200–210 | 235–250 |
| CLTE, flow direction, 10⁻⁶ K⁻¹ | ISO 11359-2 | 25–40 | 25–40 | 25–35 |
Evaluation of chemical media compatibility for the black 9.7503 grade follows ISO 175 and ISO 22088-3 for environmental stress-cracking resistance, with test media selected from the exposure environment rather than inferred from PA12 family data alone. Polyamide 12 glass-fiber compounds generally tolerate aliphatic hydrocarbons, diesel fuel, lubricating oils, hydraulic fluids, and compressed-air condensate; resistance to zinc chloride solutions is better than that of PA6 and PA66 grades, which is a selection criterion in automotive underbody and road-de-icing environments. However, PA12 is not universally resistant to polar organic media. Exposure to methanol, ethanol-blended fuels, glycol-based brake fluids, and strong mineral acids may cause plasticization, surface whitening, or stress cracking at molded-in stress concentrations. Published data for this specific formulation in aggressive ethanol blends is limited, and qualification should be run on molded test bars using ISO 22088-3 with applied strain levels matching the part design.
In pneumatic distribution systems, fittings and manifold blocks produced from PA12-GD30 are installed in networks operated to ISO 4414 and compressed-air quality classes defined in ISO 8573-1. The glass-fiber reinforcement provides burst-strength retention at rated pressures from 0.6 MPa to 1.6 MPa, depending on wall thickness and temperature derating; published component pressure ratings are not derivable from raw-material data alone and require hydrostatic testing to ISO 1167 or equivalent. Cable conduit and connector bodies benefit from lower moisture uptake because insulation resistance in humid environments is more stable; however, glass-filled grades are not inherently electrically insulating in all conditions, and surface contamination from mold release should be removed before high-voltage testing per IEC 62631-3-1. For fuel-vapor lines, continuous-use temperature in air is often taken as 80–100 °C for glass-filled PA12 depending on load and chemical environment; peak temperatures may exceed this for short durations but should be validated against ISO 2578 or equivalent long-term thermal aging data.
Within the VESTAMID® L-series, the primary distinction of L1930 black 9.7503 is the 30% glass-fiber content and black color code, rather than nucleated or impact-modified PA12 variants. Unfilled PA12 injection grades typically exhibit tensile modulus near 1,400–1,600 MPa and elongation at break above 100%; the GD30 grade shifts modulus by approximately four times and reduces elongation at break to the single-digit percentage range. This trade-off removes the snap-fit recoverable strain of unfilled PA12 and changes failure mode from ductile yielding to brittle fiber-dominated fracture. Parts with snap arms, cantilever springs, or high-strain deflections should not be converted from unfilled PA12 to PA12-GD30 without redesigning the flexural hinge. Where increased rigidity is required without the full 30% reinforcement content, lower glass-fiber or mineral-filled PA12 grades may present intermediate modulus and impact values. Selection among these grades should be based on ISO 527-2 stress-strain curves, ISO 179/1eA impact, and ISO 75-1/−2 thermal deflection, not on nominal glass content alone.
Because black 9.7503 contains carbon black, some UV screening occurs, but carbon black alone does not constitute a weathering package. Components intended for exterior exposure or continuous sunlight should be tested to ISO 4892-2 or ISO 4892-3 for tensile-strength retention and surface deterioration. If the grade is not explicitly UV-stabilized, long-term chalking or embrittlement may occur earlier than for stabilized UV grades. Regulatory documentation should be requested for RoHS recast 2011/65/EU and REACH SVHC status; the base polyamide and glass fiber do not automatically confer application-specific approvals. For food-contact, drinking-water, or medical applications, separate producer confirmations are required because ISO 1043 and black color coding do not confer compliance.
