| HS Code | 223808 |
| Density | 1.23 g/cm³ |
| Tensile Modulus | 6500 MPa |
| Tensile Strength At Break | 90 MPa |
| Elongation At Break | 4% |
| Flexural Modulus | 5800 MPa |
| Flexural Strength | 140 MPa |
| Charpy Notched Impact Strength At 23 C | 8 kJ/m² |
| Heat Deflection Temperature At 0 45 Mpa | 175 °C |
| Heat Deflection Temperature At 1 8 Mpa | 160 °C |
| Melting Point | 178 °C |
| Water Absorption 24h | 0.2% |
| Linear Mold Shrinkage | 0.2-0.5% |
As an accredited Polyram PlusTek PD300G4 Nylon 12, 20% Glass Fiber factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Polyram PlusTek PD300G4 Nylon 12, 20% Glass Fiber is supplied in sealed moisture-barrier bags containing 25 kg net. |
| Container Loading (20′ FCL) | 20′ FCL container loading of Polyram PlusTek PD300G4 Nylon 12, 20% Glass Fiber, packed on pallets, ready for safe transport. |
| Shipping | Polyram PlusTek PD300G4 (Nylon 12, 20% glass fiber) ships as non-hazardous thermoplastic pellets. Pack in sealed, moisture-resistant bags or containers on pallets. Avoid direct moisture, excessive heat, and sharp impacts. No special transport classification applies, though standard clean, dry handling and documented commercial shipping documentation are required. |
| Storage | Store PlusTek PD300G4 in its sealed original packaging in a cool, dry, well-ventilated area, away from direct sunlight, heat sources, and moisture. Nylon 12 is hygroscopic, so protect from humidity to prevent water absorption. Keep containers tightly sealed when not in use, and avoid prolonged storage above 30°C to preserve material integrity. |
| Shelf Life | Store in original sealed packaging, cool, dry conditions. Shelf life is typically 2 years from date of manufacture. |
Compressed air distribution components molded from Polyram PlusTek PD300G4 Nylon 12, 20% Glass Fiber are processed with the compound as the sole polymer fraction at 100 wt%; if dry regrind from sprues and runners is re-introduced, the proportion is capped at 20 wt% of total shot weight to contain fiber-length attrition. Pre-drying in a desiccant dryer at 80°C until residual moisture falls below 0.10 wt% is mandatory when ambient relative humidity exceeds 60%, because melt-phase hydrolysis at 260°C reduces relative viscosity from approximately 2.10 to 1.55 within 12 min of residence time, and weld-line tensile strength drops by 18% when moisture exceeds 0.15 wt% under ISO 527-2:2012, Type 1A specimen, 23°C. Relevant compliance for pneumatic fittings includes ISO 14743:2020 for push-in connectors for compressed air, ISO 8573-1:2010 for compressed air purity classes, and UL 94 HB for the base compound when tested at 0.8 mm thickness. The manufacturing route employs a reciprocating-screw injection molding machine with screw L/D 20:1–24:1, a 14 mm–18 mm compression zone length, and a shut-off nozzle; melt temperature is maintained at 235°C–265°C, mold temperature at 40°C–80°C, and hold pressure at 600 bar–900 bar to compensate for the 1.1%–1.4% semi-crystalline shrinkage. Typical terminal products are push-to-connect fittings, Y-splitters, silencers, and mounting brackets rated for continuous use at 80°C and transient pressure peaks to 12 bar.
Fuel system quick connectors and retainers are molded from the compound at 100 wt%; regrind is limited to 15 wt% because the glass-fiber length distribution in the weld-line region governs retention-lug stiffness, and regrind above this threshold increases notched Charpy scatter by 22% under ISO 179-1/1eA, 23°C. Compliance verification follows SAE J2044 for fuel line connector systems, DIN 73378-1 for polyamide tubing and fittings in motor vehicles, and ISO 19096-1 for fuel system components; when the part contacts oxygenated fuels, additional validation per SAE J1681 is required. Processing is performed on a two-platen hydraulic injection molding machine with clamp force of 1,200 kN for multi-cavity tools of 8–16 cavities; the gate is positioned opposite the retention lug to orient glass fibers perpendicular to the snap-fit bending axis, improving flexural modulus at the lug from 3,800 MPa to 4,200 MPa under ISO 178:2019. Melt temperature is held at 240°C–270°C, mold temperature at 60°C–90°C, and the recommended pre-drying uses a desiccant dryer at 80°C for 4 h–6 h to below 0.10 wt% moisture. Terminal products include fuel line quick connectors, vapor canister brackets, retainer clips, and evaporative emission system spacers. The compound is not intended for extruded fuel line tubing where multi-layer PVDF/ETFE barrier structures are required; published data for this specific configuration in oxygenated fuel immersion beyond 1,000 h is limited.
Within electrical equipment built to the Low Voltage Directive, Polyram PlusTek PD300G4 is injected as supplied at 100 wt%, with a UV-stabilized color masterbatch permitted at 1 wt%–2 wt% and flame-retardant additive masterbatches restricted to 3 wt% unless a full UL 94 re-characterization is performed, because halogenated carriers can degrade the silane sizing on the glass fiber. The material is processed for cable glands, terminal box bases, and busbar supports on a reciprocating screw with L/D 20:1 and a general-purpose three-zone screw; melt temperature is 230°C–260°C, mold temperature 40°C–70°C, and cooling time is set by the 2.5 mm wall section to avoid sink over metal inserts. Electrical compliance is anchored to IEC 60112:2020 for comparative tracking index, IEC 60695-2-11:2021 for glow-wire ignition at 650°C and 850°C, UL 94 HB at 0.8 mm as a minimum flammability class, REACH SVHC screening per EC No 1907/2006, and RoHS 2011/65/EU Annex II restricted substances; exact certification values for this specific grade must be confirmed against the producer’s technical datasheet. Terminal parts include polyamide cable glands with metric threads M12–M40, junction box bases, terminal rail mounts, and insulated busbar supports used in control cabinets.
Centrifugal pump impellers and volute liners for low-head chemical transfer are molded from the compound at 100 wt%, with dry regrind limited to 25 wt% in non-wetted hub sections only; fiberglass orientation at the blade-hub interface determines cavitation resistance under 3 bar differential head, and gate position must align with the hub core, not the blade leading edge, to prevent a 35% drop in Izod impact at the weld line under ISO 180:2019. Compliance for chemical wetted parts is assessed per ISO 175:2010 immersion testing against 10% sulfuric acid, 10% sodium hydroxide, and unleaded gasoline at 23°C; FDA 21 CFR 177.1500 may apply to food-contact components made from PA12 resin, but the glass fiber content requires migration testing under Regulation (EU) 10/2011 for food contact. The manufacturing route uses a hot-runner valve-gate system with a melt temperature of 250°C–280°C, a mold temperature of 70°C–100°C, and an injection speed of 80 mm/s–120 mm/s; the screw has a low-compression ratio of 2.0:1–2.3:1 to limit glass-fiber breakage. The compound should not be processed in contact with copper alloy tooling at melt temperatures above 270°C because copper ions accelerate oxidative degradation of the polyamide matrix. Terminal finished products are chemical metering pump impellers, volute liners, mixer blades, and coupling inserts.
High-cycle furniture components such as office chair armrest brackets and recliner plates are produced from the compound at 90 wt% virgin material with 10 wt% internal dry regrind; if color matching requires a masterbatch, loading is held at 2 wt% maximum to avoid shifting the glass-fiber distribution in the thin-wall hinge boss. The relevant mechanical compliance for commercial seating is ANSI/BIFMA X5.1-2020, while material property verification uses ISO 527-1:2019 for tensile modulus and ISO 178:2019 for flexural modulus. Production is performed with a standard three-zone screw, mold temperature 50°C–80°C, melt temperature 235°C–260°C, and cushion-hold pressure 450 bar–650 bar; the tool should include ejector sleeves on the boss core because the material’s post-mold shrinkage of 1.2%–1.5% can cause boss cracking if a pin ejector is used on multi-cavity production-scale tools. Terminal products include armrest supports, recline mechanisms, lumbar adjustment brackets, and caster sockets.
The substitution of zinc alloy in ski touring binding bases and bicycle pedal bodies with the Polyram compound is executed at 100 wt%; regrind is prohibited in impact-critical ribs because the weld face between the stiffener and the base plate is sensitive to fiber length, and regrind above 10 wt% lowers Charpy notched impact by 15%–20% under ISO 179-1/1eA, -20°C. Compliance for ski binding components follows ISO 9462:2014 binding test methods and DIN 7881 release binding parts; for bicycle structures, ISO 4210-2:2015 safety requirements apply. Processing uses a mold temperature of 60°C–90°C, melt temperature of 240°C–275°C, and a screw with L/D 22:1 to homogenize the 20% glass fiber without over-shearing; the press must provide a minimum clamp force of 2.5 kN/cm² projected area to avoid flash in the binding release window. Published data for this specific compound in cold-impact ski binding components is limited; production-scale validation is required before homologation. Terminal parts include ski touring binding bases, bicycle pedal bodies, pole clips, and climbing cam lobes.
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Polyram PlusTek PD300G4 is a pelletized polyamide 12 molding compound reinforced with 20 weight percent E-glass fiber. The material is designated PA12-GF20 under ISO 1043-1 and is supplied for injection molding of components that require lower saturated moisture uptake than glass-filled PA6 or PA66 grades, while providing higher stiffness, heat deflection temperature, and creep resistance than unreinforced PA12. Typical application fields include automotive fluid connectors, pneumatic fittings, sensor housings, cable clamps, and industrial structural parts exposed to humidity cycling, zinc chloride road salt solutions, or compressed air circuits. The glass fiber phase alters failure behavior from ductile yielding to a more brittle tensile response, so component design must account for anisotropic shrinkage, weld-line strength reduction, and increased tool wear.
Mechanical property comparisons for this grade should be interpreted under defined moisture conditioning states. The dry-as-molded condition is commonly referenced to ISO 291-23/50 after conditioning at 23 °C and 50 percent relative humidity. The comparative data in Table 1 are typical ranges from supplier technical literature and general class data for PA12-GF20, PA12, and PA66-GF20. Specific lot-to-lot values should be obtained from the certificate of analysis before design allowables are finalized.
At an equivalent 20 weight percent glass fiber loading, PA12-GF20 exhibits lower dry tensile strength and lower heat deflection temperature than PA6-GF20 or PA66-GF20, but substantially lower saturated water absorption. Saturation moisture uptake for PD300G4 is normally below 1.2 mass percent by ISO 62, compared with 5.0 to 7.0 mass percent for PA6-GF20 and PA66-GF20. This difference derives from the lower amide group concentration along the PA12 backbone. In humid operating environments, moisture-induced dimensional change and modulus loss are therefore smaller for PD300G4 than for short-chain aliphatic polyamide grades.
Relative to unreinforced PA12, the 20 weight percent glass fiber phase increases the dry tensile modulus from approximately 1300 to 1600 MPa to a typical range of 4000 to 4800 MPa as measured by ISO 527-2/1A. Tensile strain at break decreases from above 50 percent to 3 to 6 percent. The glass reinforcement also reduces isotropic mold shrinkage and creates anisotropic shrinkage behavior, with flow-direction shrinkage usually lower than cross-flow shrinkage. This anisotropy is the primary cause of out-of-plane warpage in flat parts.
| Property | Test method | PD300G4 PA12-GF20 typical | Unfilled PA12 typical | PA66-GF20 reference |
|---|---|---|---|---|
| Density | ISO 1183-1 | 1.22–1.24 g/cm³ | 1.01–1.02 g/cm³ | 1.28–1.32 g/cm³ |
| Tensile modulus, dry as molded | ISO 527-2/1A | 4000–4800 MPa | 1300–1600 MPa | 6000–7500 MPa |
| Tensile stress at break, dry as molded | ISO 527-2/1A | 80–95 MPa | 40–50 MPa | 120–145 MPa |
| Tensile strain at break, dry as molded | ISO 527-2/1A | 3–6% | 50–200% | 2–4% |
| Flexural modulus, dry as molded | ISO 178 | 3400–4200 MPa | 1100–1400 MPa | 5500–7000 MPa |
| Charpy notched impact strength, 23 °C | ISO 179-1/1eA | 8–14 kJ/m² | 5–8 kJ/m² | 8–12 kJ/m² |
| Heat deflection temperature, 1.8 MPa | ISO 75-2/A | 150–165 °C | 50–60 °C | 230–250 °C |
| Water absorption, saturation in water at 23 °C | ISO 62 | 0.8–1.1 mass% | 0.9–1.2 mass% | 5.0–6.5 mass% |
The PA12 matrix also provides better resistance to stress cracking in the presence of zinc chloride solutions than PA6 or PA66 compounds. This behavior is relevant for under-hood components exposed to de-icing salt spray. Component-level tests generally use saturated zinc chloride solution at 23 °C for 100 to 200 hours under applied bending strain of 0.5 to 1.0 percent. Published data for PD300G4 in this specific configuration is limited; therefore, validation on actual molded parts is required before substituting the material into zinc chloride-exposed service.
Pre-drying of Polyram PlusTek PD300G4 should be performed in a desiccant dryer at 80 °C for 4 to 6 hours to a final moisture content below 0.10 percent by weight. The feed throat should be purged with dry air or nitrogen, and return air dew point should be maintained at or below −30 °C. If the material is exposed to ambient air above 60 percent relative humidity for more than 15 to 20 minutes, surface moisture pickup can produce splay, loss of surface finish, and reduced weld-line strength. Melt temperature measured at the nozzle is normally set between 245 °C and 270 °C for short-cycle work. Mold temperature should be held between 60 °C and 90 °C to promote uniform crystallization and minimize post-mold warpage. Injection pressure depends on flow length and cavity thickness, but in 2 to 3 mm wall sections it often falls between 60 and 100 MPa on conventional hydraulic injection molding machines with 20:1 to 24:1 L/D general-purpose polyamide screws.
Melt volume-flow rate under ISO 1133-1 at 235 °C and 5 kg load is typically in the range of 8 to 15 cm³ per 10 minutes, placing PD300G4 in the medium-flow range for glass-filled PA12. The PA12 matrix has a melting peak near 175 °C to 180 °C by ISO 11357-3. A mold temperature of 60 °C to 90 °C therefore creates moderate supercooling and relatively slow crystallization compared with PA66, which can be used to reduce as-molded crystallinity gradients but also requires adequate holding time to avoid sink marks and dimensional drift.
Glass fiber reinforced grades are abrasive, and PD300G4 should not be processed in tools designed for unreinforced resins without upgrading gate and shut-off surfaces. Tooling should be hardened to at least 50 HRC, and gate inserts should be inspected for wear at defined shot counts. Fiber orientation during filling produces anisotropic shrinkage, typically 0.25 to 0.45 percent in the flow direction and 0.60 to 0.90 percent perpendicular to flow when measured on ISO 294-4 plaques. This orientation anisotropy is the primary cause of out-of-plane warpage in flat parts, especially when mold temperature falls below 60 °C and differential cooling freezes orientation before relaxation.
Melt residence time above 270 °C should be limited to approximately 8 minutes. Extended residence at high temperature can reduce molecular weight, shift viscosity, and cause surface discoloration. The use of regrind from sprues and runners is possible in non-critical applications, but incorporation above 25 weight percent is not recommended where low-temperature impact performance is specified. Fiber length attrition and additional heat history reduce Charpy notched impact after ISO 179-1/1eA and can increase susceptibility to weld-line cracking.
Residual moisture at the feed throat should be verified by Karl Fischer titration or by a moisture analyzer calibrated for polyamides. The drying hopper residence time should be matched to material consumption. At a consumption rate of 5 kg per hour, a hopper residence time of 3 to 4 hours should be maintained to avoid short-circuiting of partially dried pellets into the feed throat. The measurement of moisture below 0.10 percent is critical because PA12 can appear visually acceptable while retaining enough absorbed water to produce hydrolysis-induced surface defects and reduced weld strength.
Pneumatic connectors and manifolds molded from PD300G4 can be considered where ISO 14743 push-in fitting validation applies. The glass fiber phase reduces creep under sustained internal air pressure relative to unfilled PA12, but weld-line regions in multi-cavity fittings should be placed away from pressure-bearing areas. Weld-line tensile strength may be 40 to 50 percent lower than bulk tensile strength because glass fibers do not bridge the weld interface effectively. Long-term pressure testing should be performed at maximum working pressure and at the proof pressure specified for the circuit, commonly 1.5 times maximum working pressure in compressed air systems.
In automotive fluid connectors and clips, the lower moisture uptake of PA12 limits diametrical expansion and retention loss during humidity cycling. Component validation for under-hood use may include thermal cycling from −40 °C to 85 °C according to ISO 16750-4, depending on mounting location and exposure class. Zinc chloride road salt resistance is evaluated by immersion or spot testing under bending strain. PA12 grades are less susceptible to zinc chloride stress cracking than PA66 grades under similar conditions, but published long-term exposure data for PD300G4 is limited, and polymer-specific field validation remains a requirement.
Electrical housings and sensor bodies may use PD300G4 when dimensional stability across 50 percent RH to 80 percent RH exposure is specified. Comparative tracking index and insulation resistance values are not part of the base technical data sheet and must be tested according to IEC 60112 and IEC 60093 after moisture conditioning. Glass fiber surface chemistry and moisture uptake influence tracking behavior, so results from unreinforced PA12 cannot be transferred directly to a 20 weight percent glass fiber compound. This is particularly important for automotive electrical connectors and industrial control enclosures where creepage distance and insulation coordination are governed by IEC 60664-1.
The grade can be identified by material designation PA12-GF20 according to ISO 1043-1. For electrical and electronic applications, the finished article should be evaluated under Directive 2011/65/EU RoHS recast and Regulation (EC) No 1907/2006 REACH as amended. Compliance is established at the finished article level and is not automatically conferred by resin pellet composition alone. Flammability claims, if required, should be verified on the final wall thickness under UL 94, because glass fiber reinforcement can change burning behavior as a function of thickness and test configuration.
Published data for this specific product in long-term zinc chloride exposure, oil mist aging, and tracking index retention is limited. Design engineers should therefore use the typical property ranges in Table 1 for initial material screening only. Qualification programs must include molded plaques, real part geometry, and end-use environment testing before production release.
