| HS Code | 570769 |
| Material | VESTAMID L-GF30 black 9.7506 |
| Base Polymer | Nylon 12 (PA12) |
| Glass Fiber Content | 30% |
| Color | Black |
| Density | 1.24 g/cm³ |
| Melting Temperature | 178 °C |
| Heat Deflection Temperature 1 80 Mpa | 145 °C |
| Heat Deflection Temperature 0 45 Mpa | 170 °C |
| Tensile Modulus | 9500 MPa |
| Tensile Strength At Break | 125 MPa |
| Elongation At Break | 3% |
| Charpy Impact Strength 23 C Unnotched | 55 kJ/m² |
| Charpy Impact Strength 23 C Notched | 8 kJ/m² |
| Water Absorption Saturation | 1.2% |
As an accredited Evonik VESTAMID® L-GF30 black 9.7506 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 moisture-proof sealed bags of black nylon 12 pellets, 30% glass fiber filled, palletized for transport. |
| Container Loading (20′ FCL) | Loaded in 20′ FCL as sealed, palletized bags of glass-filled nylon pellets, secured to prevent moisture and transit damage. |
| Shipping | Evonik VESTAMID® L-GF30 black 9.7506 is a 30% glass-fiber-reinforced Nylon 12 supplied as dry pellets. Non-hazardous for transport, it ships in sealed moisture-barrier bags or drums. Protect from humidity, extreme heat, and puncturing. Standard ground freight accepted; avoid prolonged outdoor storage to preserve material performance. |
| Storage | Store in a cool, dry, well-ventilated area away from direct sunlight, heat sources, and moisture. Keep in the original sealed packaging to prevent water absorption, which can degrade the nylon matrix. Avoid contact with strong oxidizers. Maintain temperatures below 50°C. Use within recommended shelf life to preserve mechanical properties. |
| Shelf Life | Store unopened in original, dry packaging below 30°C, away from light and moisture. Shelf life is typically 2 years. |
In liquid fuel-hose quick-connect couplers for underhood routing, Evonik VESTAMID® L-GF30 black 9.7506 is processed as a ready-to-mold 30 wt% short-glass-fiber-reinforced nylon 12 compound. The glass-fiber content is not an additive ratio adjusted on the shop floor; it is fixed in the compounded pellet, and the formulation boundary is maintained by controlling regrind addition and drying parameters. For fuel-wetted connector bodies and sender-unit flanges, the addition ratio of clean, unmixed regrind is limited to 15 wt% of total shot weight; non-wetted clips and routing brackets may accept up to 20 wt% regrind only when the hot-runner and screw recovery conditions do not reduce glass-fiber length below the supplier reference distribution. The industry compliance path for US and EU passenger-vehicle fuel-wetted parts is anchored to SAE J2044 for quick-connector mechanical retention, SAE J1737 for gravimetric permeation evaluation, and ISO 16750-4 for thermal-shock endurance. During tooling validation, the coupling body must demonstrate pull-off retention after thermal soaking at 125 °C in dry air, followed by water-glycol exposure and a −40 °C low-temperature pull test, with leakage below the OEM limit after 1,000 cycles of pressure pulsation.
Downstream production on a screw injection molding machine with an 18:1 to 22:1 L/D bimetallic barrel and a three-zone open-nozzle tip uses a measured melt temperature of 250 °C to 270 °C, a mold wall temperature of 85 °C to 100 °C, and hold pressure between 60 MPa and 80 MPa to compact the glass-fiber network. The critical process conflict occurs at weld lines: when two fiber-laden melt fronts meet in a ring-shaped quick-connector body, tensile retention relative to the un-welded region falls sharply, and published data for this specific configuration is limited, so production tools rely on a single valve gate or circumferential film gate rather than adding mold temperature to recover lost strength. Pre-drying is fixed at 80 °C in a desiccant dryer with a dew point below −30 °C until residual moisture is below 0.10 wt%. Terminal finished parts in this sector are SAE J2044 quick-connect bodies, fuel-line routing clips, evaporative canister mounting flanges, fuel sender locking rings, and access-cover brackets.
The functional boundary is defined less by the short-term tensile strength of the compound than by anisotropic fiber orientation in the sealing body and by residual moisture at the time of plastication. For compressed-air distribution and commercial-vehicle air brake fittings, the governing standard is ISO 14743 for push-in connectors, supplemented by ISO 8573-1 for compressed-air quality and ISO 228-1 for threaded port geometry. In pressure-bearing coupling bodies, the formulation addition ratio is 100 wt% virgin material or a maximum 10 wt% cleaned and moisture-controlled regrind; batches above 0.08 wt% residual water are rejected before drying because hydrolysis during melt processing reduces burst-pressure consistency more than glass-fiber loading. Pre-drying at 80 °C in a desiccant dryer with a dew point below −30 °C and a resin-bed residence time of 4 h to 8 h lowers moisture below 0.10 wt%.
Injection molding uses a wear-resistant screw with low compression and a nozzle melt temperature of 255 °C to 275 °C; the mold wall is held at 90 °C to 100 °C, and the gate is located at the largest cylindrical section of the fitting rather than at the thread root, because thread-root gating creates a glass-fiber orientation pattern that can shift the failure mode from hoop stress to longitudinal splitting. With a working pressure of 1.6 MPa, the required burst pressure is ordinarily specified as 4.0× working pressure, or above 6.4 MPa; actual failures observed on production-scale test stands are often longitudinal splits along the flow-line near the hex shoulder, not radial cracks at the thread. Terminal finished parts include push-in connectors with metric and taper threads, swivel elbows, tee blocks, distribution manifolds, and truck air-brake coupling bodies.
When glycol-water coolant cycles between −40 °C and 95 °C in an electric-vehicle battery thermal circuit, the combination of low linear moisture uptake, glycol resistance, and glass-fiber stiffness directs the specification toward this specific nylon 12 compound rather than a higher-moisture-uptake PA6-GF30 or an unfilled polypropylene. In this segment, the applicable regulatory baseline is REACH (EC) No 1907/2006 and RoHS 2011/65/EU at the finished-component level, with OEM-specific coolant-aging tests commonly derived from ASTM D543-20 immersion practice rather than a single harmonized automotive standard. The formulation addition ratio is 100 wt% virgin VESTAMID L-GF30 black 9.7506 on seal-contact surfaces; regrind, if allowed, is capped at 15 wt% for non-sealing brackets and is never mixed into the short-shot layer adjacent to the O-ring groove.
Injection molding of battery coolant connector bodies and manifold segments uses polished side-core tooling and a gate placed at the axial center of the manifold, because end-gating orients the glass fiber in the axial direction and increases hoop stiffness while reducing radial compliance at the tube insertion end. Melt temperature is held at 250 °C to 270 °C and mold temperature at 90 °C to 100 °C; when a low mold temperature below 80 °C is used to shorten cycle time, the resulting amorphous skin at the O-ring groove retains residual stress that relaxes during continuous 90 °C coolant exposure and creates seal-contact leakage. Terminal components include battery coolant quick couplings, multi-line manifold bodies, thermal management line connectors, and coolant reservoir nipples.
The grade is selected for industrial water-processing housings because equilibrium moisture uptake at 23 °C and 50% RH is lower than that of PA6-GF30, which reduces the dimensional shift that changes seal-groove depths after installation. The compliance route depends on the water class: for non-potable industrial filtration, the machinery-safety assessment falls under Directive 2006/42/EC, and material restrictions are governed by REACH Annex XVII; for potable-water contact, certification is conducted on the finished article under NSF/ANSI 61 or WRAS, and the raw material itself cannot self-certify. The formulation addition ratio remains fixed at 30 wt% glass fiber; if a color change is attempted by adding concentrate to the black 9.7506 base, the addition must remain below 1 wt% because excessive color concentrate creates a second dispersed phase that reduces weld-line impact and can initiate crack growth under chloride exposure.
Thick-wall filter heads with nominal wall thicknesses from 10 mm to 20 mm are injection molded with extended holding pressure to control sink marks at stiffening ribs below 0.02 mm depth, and the mold is cooled with uniform water-line geometry to avoid hot spots that cause post-molding crystallinity differentials. Chloride-induced stress cracking is the primary failure mode observed in the field; therefore production parts are washed after machining to remove metal-chloride residues, and assembly torque is validated on both dry and wet specimens. Terminal finished parts include filter heads, filter vessel bodies, valve bodies, and pump end-caps.
The under-crystallized skin formed at 60 °C wall temperature reduces thread torque retention after outdoor temperature cycling, because the frozen amorphous layer relaxes stress at the thread flank before the core crystallinity can stabilize the internal geometry. For this reason, electrical-enclosure and cable-gland tools require a thermal-oil mold temperature control system set to 85 °C to 100 °C, even though the lower wall temperature would reduce cycle time. The applicable electrical-enclosure criteria include IEC 60529 for IP67 and IP68 sealing, IEC 60695-2-11 for glow-wire resistance, UL 94 for flammability classification—this grade is HB, not V-0—and RoHS 2011/65/EU for material restrictions.
The formulation addition ratio is fixed at 30 wt% glass fiber; clean regrind is limited to 10 wt% to 15 wt% of total shot weight in multi-cavity tools because the surface appearance of black 9.7506 is sensitive to glass-fiber length distribution and carbon-black dispersion. Injection molding of cable gland bodies, sealing nuts, and sensor connector housings uses balanced runner layouts and a valve-gated cold-runner system to prevent glass-fiber accumulation at the closure area of the sealing cone. Terminal finished articles include dome-type cable glands, metric and PG-threaded glands, junction-box bases, and industrial sensor connector housings.
| Segment | Primary standard | Method or clause | Formulation and processing boundary |
|---|---|---|---|
| Fuel-wetted quick connectors | SAE J2044, SAE J1737, ISO 16750-4 | Pull-off retention, gravimetric permeation, thermal shock | Regrind ≤ 15 wt%; moisture < 0.10 wt% |
| Compressed-air push-in fittings | ISO 14743, ISO 8573-1, ISO 228-1 | Burst pressure, thread form, air quality | Regrind ≤ 10 wt%; moisture < 0.08 wt% |
| EV battery coolant connectors | REACH (EC) No 1907/2006, RoHS 2011/65/EU, OEM ASTM D543-20 aging | Coolant immersion, thermal cycling, seal retention | Virgin only on seal surfaces; regrind ≤ 15 wt% elsewhere |
| Industrial water-processing housings | Directive 2006/42/EC, REACH Annex XVII, NSF/ANSI 61 finished article | Chloride stress cracking, dimensional stability | Color concentrate < 1 wt%; sink marks < 0.02 mm |
| Electrical cable glands | IEC 60529, IEC 60695-2-11, UL 94 | IP sealing, glow-wire, flammability | Mold wall 85 °C to 100 °C; regrind 10 wt% to 15 wt% |
| Sporting load-bearing inserts | REACH, RoHS, ISO 527-2, ISO 179/1eA | Tensile modulus, Charpy notched impact at −30 °C | Virgin only for load-bearing bodies; regrind ≤ 15 wt% non-critical |
Historically, low-temperature impact at −30 °C and resistance to chloride-induced stress cracking have directed the same black 9.7506 compound into high-abrasion sporting goods where structural stiffness must be retained after repeated moisture and snow exposure. The regulatory baseline for finished sporting articles in the EU is REACH (EC) No 1907/2006, RoHS 2011/65/EU, and the General Product Safety Regulation (EU) 2023/988; no harmonized standard applies specifically to ski-touring binding inserts, so OEM specifications typically incorporate ISO 527-2 tensile modulus, ISO 179/1eA Charpy notched impact, and ISO 75-2 heat deflection temperature into part-specific test plans. The formulation addition ratio remains fixed at 30 wt% short glass fiber; regrind at up to 15 wt% is accepted in non-load-bearing covers, but load-bearing insert bodies are molded from 100 wt% virgin material because low-temperature impact is disproportionately reduced when fiber length distribution is shortened. Injection molding of geometrically complex binding toe-bail housings uses sequential valve gating to move weld lines away from the pivot hole, with melt temperature 250 °C to 270 °C, mold temperature 90 °C, and residual moisture below 0.08 wt% after 80 °C desiccant drying. Published data for this specific configuration is limited; therefore the impact threshold at −30 °C must be verified on the actual part geometry and cannot be transferred from ISO test bars. Terminal finished articles include ski-touring binding toe and heel frame inserts, bicycle pedal bodies, and high-impact sporting guard components.
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VESTAMID® L-GF30 black 9.7506 is a polyamide 12 (PA12) injection-molding compound reinforced with 30% by mass E-glass fiber. The base polymer is polylaurolactam, an aliphatic semicrystalline polyamide whose amide-group spacing produces a lower equilibrium moisture uptake than PA6 or PA66. The designation 9.7506 identifies a black pigmentation package based on carbon black dispersed in the compound. The material is classified as PA12-GF30 under ISO 1874-1, and the reinforcing content is verifiable by ash determination under ISO 3451-1. In the dry-as-molded condition, a typical density of 1.25 g/cm³ is reported under ISO 1183-1, and water absorption at saturation is approximately 1.5% under ISO 62. The compound is supplied as cylindrical pellets for injection molding and is typically used when the moisture resistance of PA12 must be combined with elevated modulus and reduced creep strain relative to unreinforced PA12.
Within the VESTAMID L portfolio, the step from unfilled PA12 to 30% glass fiber raises the dry tensile modulus from roughly 1200–1500 MPa to the range of 8000–9000 MPa and reduces nominal strain at break from well above 200% to below 5%. The heat deflection temperature under ISO 75-2/A increases from approximately 50–60 °C for unfilled PA12 to approximately 170 °C for the glass-filled grade. This shift is accompanied by a change in failure mode from ductile yielding to quasi-brittle fracture and by a substantial increase in melt viscosity. Tooling, gating, and screw design must therefore be selected explicitly for a glass-filled polyamide rather than for a general-purpose unfilled grade.
At 23 °C in the dry-as-molded condition, published data for the natural-grade analog show tensile modulus values of 8000–9000 MPa, tensile stress at break near 130–150 MPa, and nominal strain at break of 3–5% under ISO 527-2/1A. After conditioning at 23 °C and 50% RH, the tensile modulus declines to approximately 5500–6500 MPa and the tensile stress at break to 90–105 MPa, while the strain at break increases to 4–6%. The black 9.7506 pigmentation may shift these values within normal lot-to-lot variation; published data for the black grade in every conditioned state are limited. The notched Charpy impact resistance under ISO 179-1/1eA at 23 °C is reported near 13–15 kJ/m² dry and increases in the conditioned state because the PA12 matrix absorbs water and undergoes localized plasticization. At -30 °C, the dry notched Charpy value remains near 10 kJ/m², reflecting the low glass transition temperature of the PA12 matrix and resistance to sub-zero embrittlement.
| Property | Standard | Dry-as-molded | Conditioned 23 °C, 50% RH |
|---|---|---|---|
| Density | ISO 1183-1 | 1.25 g/cm³ | — |
| Tensile modulus | ISO 527-2/1A | 8000–9000 MPa | 5500–6500 MPa |
| Tensile stress at break | ISO 527-2/1A | 130–150 MPa | 90–105 MPa |
| Nominal strain at break | ISO 527-2/1A | 3–5% | 4–6% |
| Notched Charpy, 23 °C | ISO 179-1/1eA | 13–15 kJ/m² | — |
| Notched Charpy, -30 °C | ISO 179-1/1eA | 9–11 kJ/m² | — |
| Heat deflection temperature, 1.8 MPa | ISO 75-2/A | 170 °C | — |
| Vicat B50 | ISO 306 | 160 °C | — |
| Water absorption at saturation | ISO 62 | 1.5% | — |
Fiber orientation and gating alter these values in molded parts. The tabulated values are obtained on standardized type 1A specimens under controlled orientation; production parts with long flow paths and edge gating may develop a skin-core orientation gradient that reduces transverse modulus and creates anisotropic shrinkage. For critical structural parts, finite-element predictions should use orientation-dependent data rather than a single isotropic modulus.
Moisture uptake is the main differentiator between PA12-GF30 and glass-filled PA6 or PA66. PA6 and PA66 absorb approximately 8–10% water at saturation, whereas PA12 absorbs about 1.5%. This gives PA12-GF30 a smaller depression in glass transition temperature, lower modulus loss in humid service, and less dimensional growth after moisture conditioning. Dimensional stability is further influenced by the glass fiber network; fiber orientation limits linear expansion in the flow direction, but the transverse direction can still expand with moisture and temperature. The black carbon black pigment provides surface opacity and some UV screening, but the stabilizer package is the controlling factor for long-term outdoor exposure. No prolonged weathering claim is established without ISO 4892-2 or ISO 4892-3 data for the specific black grade.
Pre-drying in a desiccant dryer at 80 °C for 4–6 h to a residual moisture content below 0.10% is required before injection molding. The melt temperature at the nozzle is typically set between 230 °C and 270 °C, with mold surface temperatures from 40 °C to 80 °C. Higher mold temperatures promote crystallization and reduce post-mold dimensional change, but they increase cycle time and can increase warpage in flat plaques. A general-purpose three-zone screw with a compression ratio of 2.0–2.5:1 and a check ring designed for abrasive glass-filled compounds is used. Peripheral screw speed should be held below 0.3 m/s to avoid excessive fiber attrition; glass fiber length reduction lowers tensile modulus and notched impact. At the upper melt temperature, residence time above 270 °C should not exceed 10 min to limit thermo-oxidative degradation. At the lower boundary, melt temperatures below 220 °C may require high injection pressures above 120 MPa in thin sections, increasing shear heating and gate blush. Hardened, wear-protected barrels and screws are required because glass fiber abrasion can reduce screw diameter and increase backflow over long production runs.
Chemical resistance follows the PA12 backbone. The grade is generally resistant to aliphatic hydrocarbons, diesel fuel, motor oil, grease, alkaline cleaning media, and salt spray. Immersion testing under ISO 175 with aliphatic hydrocarbons at 23 °C typically shows mass changes below 2%; by contrast, strong acids, oxidizing media, and hot water above 80 °C attack the matrix and the glass fiber sizing, producing fiber-matrix debonding and a loss of tensile strength. The carbon black pigment does not materially alter chemical resistance, but it can obscure early surface whitening that signals moisture or chemical attack in unfilled or translucent grades. Published data for the specific black 9.7506 compound in aggressive media are limited; qualification should include ISO 175 immersion or ISO 22088-3 stress-cracking tests with the actual service fluid.
When evaluated against glass-filled PA6 and PA66, PA12-GF30 trades some dry-state stiffness and high-temperature load capacity for lower density, lower moisture uptake, and improved retention of toughness at sub-zero temperatures. The dry heat deflection temperature of PA12-GF30 is approximately 170 °C under ISO 75-2/A, while a typical PA66-GF30 can exceed 240 °C and a PA6-GF30 approximately 205 °C. In continuous load-bearing service above 150 °C, PA12-GF30 is not a direct replacement for PA66-GF30 because the PA12 matrix softens and creep compliance increases. Conversely, PA12-GF30 has a density of 1.25 g/cm³, whereas glass-filled PA6 and PA66 commonly range from 1.36–1.38 g/cm³, giving the PA12 grade an advantage in mass-sensitive components.
| Property | Standard | PA12-GF30 | PA6-GF30 | PA66-GF30 |
|---|---|---|---|---|
| Density | ISO 1183-1 | 1.25 g/cm³ | 1.36 g/cm³ | 1.37 g/cm³ |
| Water absorption at saturation | ISO 62 | 1.5% | 9–10% | 8–9% |
| Tensile modulus, dry | ISO 527-2/1A | 8000–9000 MPa | 9000–10000 MPa | 9500–10500 MPa |
| Heat deflection temperature, 1.8 MPa | ISO 75-2/A | 170 °C | 205 °C | 240 °C |
| Notched Charpy, -30 °C | ISO 179-1/1eA | 9–11 kJ/m² | 7–9 kJ/m² | 7–8 kJ/m² |
These comparative values are typical dry-as-molded data derived from published material datasheets and should not be used for final part design without application-specific testing. The low-temperature notched impact advantage of PA12-GF30 arises from the low glass transition temperature of the PA12 matrix; PA6 and PA66 matrices embrittle more readily at sub-zero temperatures. However, PA12-GF30 has lower resistance to creep under sustained load at temperatures above 80 °C, and creep data under ISO 899-1 should be consulted for structural parts. In humid service, the relative ranking can shift because PA6-GF30 and PA66-GF30 grades show greater loss of modulus and dimensional growth than PA12-GF30.
Injection-molded applications for PA12-GF30 black 9.7506 are found in fuel-system brackets, pneumatic connectors, pump housings, filter bowls, structural clips, and industrial machinery components exposed to hydrocarbon media and fluctuating humidity. These parts are typically specified where the material can exploit its lower moisture uptake, low-temperature impact retention, and chemical resistance. Part design must address glass fiber orientation, weld lines, and anisotropic shrinkage; weld-line strength in a glass-filled PA12 can be significantly lower than the bulk tensile strength and should be validated with ISO 527-2 specimens. Qualification for automotive or industrial original equipment requires testing at the actual service temperature and media combination, preferably using ISO 175 chemical immersion, ISO 179-1 notched impact, and ISO 75-2 heat deflection as screening tools. No regulatory, food-contact, drinking-water, or medical claim is attached to this black 9.7506 grade without written confirmation from the manufacturer; the grade should be evaluated against the latest safety data sheet and the relevant REACH and RoHS compliance statements.
