| HS Code | 735242 |
| Material | Nylon 12 (PA) |
| Reinforcement | Glass Bead, 50% by weight |
| Density | 1.60 g/cm³ |
| Tensile Strength | 55 MPa |
| Elongation At Break | 5% |
| Flexural Modulus | 5000 MPa |
| Izod Impact Notched | 40 J/m |
| Heat Deflection Temperature 1 8 Mpa | 150 °C |
| Melting Point | 178 °C |
| Water Absorption 24 Hr | 0.2% |
| Mold Shrinkage | 0.3% |
As an accredited RTP Company RTP 200 F GB 50 Nylon 12 (PA), Glass Bead - Preliminary Datasheet factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Packaged as 25 kg sealed moisture-barrier bags of nylon 12 glass bead pellets, with desiccant, ensuring dry storage and safe transport. |
| Container Loading (20′ FCL) | A 20′ FCL container holds RTP 200 F GB 50 Nylon 12 (PA) glass bead compound, safely packed on pallets and secured for transportation. |
| Shipping | This nylon 12 composite with glass bead filler ships as a non-hazardous solid thermoplastic material. It is packed in moisture-resistant lined bags or drums to prevent water absorption. Standard ground freight is typical; no special hazmat labeling required. Store dry and away from extreme heat during transit and handling. |
| Storage | Store in a cool, dry, well-ventilated area, away from direct sunlight, heat sources, and moisture. Keep sealed in original container until use. Since PA 12 can absorb humidity, limit exposure and reseal tightly after opening. If the material becomes damp, dry it before processing. Ideal temperature: ambient, below 30°C. |
| Shelf Life | Store in original sealed container in cool, dry conditions. Shelf life indefinite if kept dry and protected from moisture absorption. |
In fuel-system quick-connect tooling where the cavity count exceeds 4 and the feed system is a hydraulically actuated valve-gate stack, tube-interface flatness at the quick-connect retaining leg is the controlling rejection cause. RTP 200 F GB 50 is supplied as a pre-compounded pellet with the glass bead addition fixed at 50 wt% in a PA12 matrix; it is not a masterbatch, and shop-floor dry blending with unfilled PA12 should not be used for fuel-contacting parts because the resulting filler-to-matrix ratio would deviate from the supplier’s compounding control. The governing performance specification for gasoline fuel quick connectors is SAE J2044, supported by ISO 175 immersion studies in Fuel C at 23°C and 60°C for swell and hardness retention. Because the datasheet is preliminary, long-term fuel-swell data for this exact glass bead configuration is limited; production validation must be run on final tool cavities using the specific fuel blend specified by the OEM rather than extrapolated values.
The downstream injection molding route for quick connectors begins with desiccant drying at 80°C to a moisture content below 0.10%, with dried pellets transferred through a closed conveying loop. A melt profile of 240–260°C and mold coolant maintained at 60–80°C is used on production tooling to keep the quick-connect seal face within part print after post-mold moisture equilibration. The 50 wt% glass bead fraction increases melt viscosity and manifold pressure in multi-cavity hot-runner stacks, so valve-gate sequencing must be re-timed with short-shot fill studies; otherwise the weld line shifts into the quick-connect retaining leg and reduces pull-off force. Barrel and screw assemblies should use bimetallic surfaces and a compression ratio of 2.5:1 to 3.0:1; worn check rings produce shot-weight drift with glass bead compounds because the filler packs into the sliding clearance. Terminal finished part types include SAE J2044 style fuel line quick connectors, vapor purge valve brackets, fuel rail spacers, and fluid line retaining clips.
Insert-molded electrical connector housings with brass terminals require a polymer matrix that holds terminal pitch after thermal cycling and moisture conditioning. The compound is supplied with the glass bead addition already fixed at 50 wt%; if lower stiffness or higher impact toughness is needed, a separate lower glass bead grade should be specified instead of dry blending with unfilled PA12. The main compliance framework is IEC 60664-1 for insulation coordination, IEC 60112 for comparative tracking index, IEC 60243-1 for dielectric strength, and UL 94 for flame class at the final housing thickness. The preliminary datasheet does not include a final UL 94 Yellow Card; untreated PA12 can be HB or V-2 depending on wall thickness, so the end-use flammability class must be confirmed from the final product file before connector release.
The downstream production process for terminal housings is insert molding with brass or tin-plated terminals placed in the cavity and gated through a subgate or pin gate on the boss opposite the terminal row. Mold temperature is held at 80°C to reduce differential shrinkage between the brass insert and the polymer, which otherwise appears as post-mold pin tilt and variable pin pull-out force. With 50 wt% glass bead loading, melt viscosity is substantially higher than unfilled PA12; injection fill time and holding pressure must be adjusted to move the weld line away from the terminal row. Gate diameter should be increased above 1.2 mm for wall sections of 0.8–1.6 mm to avoid shear-induced bead-matrix slip at the gate, a failure mode observed on high-cavity insert tools as lower terminal retention after aging. Batch-to-batch variation in glass bead surface treatment affects dry-as-molded dielectric strength, so IEC 60243-1 measurements should be repeated after lot changes on parts conditioned at 23°C and 50% RH. Terminal finished part types include relay sockets, sensor connector insulators, coil bobbins, terminal blocks, and low-voltage electrical enclosures.
| Scenario | Primary standard | Test designation or clause | Verification status for RTP 200 F GB 50 |
|---|---|---|---|
| Fuel quick connectors | SAE J2044, ISO 175 | Fuel C immersion, hardness retention | Preliminary datasheet; OEM-specific fuel swell validation required |
| Electrical connector housings | IEC 60664-1, IEC 60112, IEC 60243-1, UL 94 | CTI, dielectric strength, flame class at final thickness | Final UL Yellow Card required |
| Pneumatic manifolds | ISO 175, ISO 9227, ISO 179-1/1eA, PED 2014/68/EU | Oil-mist aging, salt spray, Charpy impact | Component-level pressure rating verification required |
| Appliance brackets | IEC 60335-1, IEC 60695-2-11, RoHS 2011/65/EU | Glow-wire flammability, ball pressure | Preliminary datasheet; glow-wire test at final thickness required |
| Analytical instrument frames | IEC 61010-1, ISO 75-1/-2, ISO 11359-2 | HDT and CLTE | Preliminary datasheet; thermal cycling validation required |
For compressed-air manifold sections operating below 1.0 MPa and ambient temperatures up to 50°C, the observable defect after machining is edge deflection across the spool bore seat. The 50 wt% glass bead PA12 compound is supplied as a fully filled pellet; no additional dosing is required. The material must be assessed with ISO 175 immersion in compressor oil mist, ISO 9227 salt spray for metallic insert compatibility, and ISO 179-1/1eA for notched Charpy impact after heat aging. Where the manifold assembly is pressure-containing, PED 2014/68/EU may apply to the final component, and the material datasheet cannot be used alone to certify the design.
Downstream production uses injection molding with thick wall sections, internal threads, and hydraulic core pulls, which creates long cooling times and high residual stress if the mold is not run above 60°C. A melt temperature of 240–260°C and mold temperature of 60–80°C are the starting conditions; the holding pressure should be maintained until gate seal to limit internal voids at the thread root. The spherical filler reduces thermal expansion mismatch with brass fittings relative to unfilled PA12, but the molder should still monitor screw pull-back stability and check ring wear because the 50 wt% glass bead fraction can pack in the non-return valve. Terminal finished part types include pneumatic manifold blocks, solenoid valve bodies, air preparation units, quick-exhaust valve bases, and filter bowl mounts.
Appliance structural brackets that previously used POM or glass-fiber PA66 transfer to 50 wt% glass bead PA12 when the failure mode is differential shrink after repeated water exposure, not tensile overload. The pellet is pre-filled at 50 wt%; if the tool was originally cut for POM shrinkage, mold-flow revalidation is mandatory before switching because the holding-pressure and cooling-time profiles will differ. Appliance end-use compliance is governed by IEC 60335-1 for household appliance safety and IEC 60695-2-11 for glow-wire flammability; RoHS 2011/65/EU as amended applies to the final assembly. The downstream production process is conventional injection molding with medium injection speed, mold temperatures near 80°C, and water-cooled shells to keep flatness across ribbed brackets. Terminal finished part types include washing machine sensor brackets, espresso machine internal mounts, and power tool motor supports.
After 500 thermal cycles between −10°C and 60°C, analytical instrument frames are judged by retained flatness and boss torque rather than by virgin tensile strength as measured under ISO 527-1/-2. The compound is supplied as a fully compounded pellet with the glass bead addition fixed at 50 wt%; any attempt to lower density by foaming may be reviewed separately but is not covered by the preliminary datasheet. The applicable safety standard is IEC 61010-1 for laboratory equipment; dimensional performance is evaluated under ISO 75-1/-2 for heat deflection temperature and ISO 11359-2 for coefficient of linear thermal expansion. The downstream production route is injection molding of large flat frames with bosses and snap-fit features, using sequential valve gating to keep the weld line away from optical mounting planes. Finished part types include analytical instrument frames, lab automation chassis, and bench-top diagnostic enclosures that do not contact the patient.
Because PA12 has lower 23°C water absorption than PA6 or PA66, as measured by ISO 62, the frame retains bolted joint preload better after RH conditioning; however, the 50 wt% glass bead fraction reduces elongation at break, so boss and snap-fit designs must include generous radii and avoid blind threads. Published data for this specific configuration is limited; thermal cycling qualification should be performed on the conditioned part per the instrument manufacturer’s environmental test plan. The molder should dry the resin to 0.10% moisture and use a 240–260°C melt temperature, 80°C mold temperature, and low-screw-speed plastication to minimize bead fracture in the metering zone.
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The preliminary datasheet for RTP Company RTP 200 F GB 50 identifies the grade as a nylon 12 injection-molding compound reinforced with spherical glass bead filler at a nominal loading of 50% by weight. The material is supplied as pelletized feedstock for conventional thermoplastic processing and is designated within the RTP 200 polyamide series. Because the document is labeled a preliminary datasheet, the published values are not intended for final production qualification without verification against the latest issued control document from RTP Company. The grade is characterized by high filler-assisted stiffness, low shrinkage, and reduced anisotropic distortion compared with short-glass-fiber-reinforced nylon 12.
The microstructural configuration of the glass bead is the principal distinction between this grade and glass-fiber-reinforced nylon 12. Spherical glass beads do not orient longitudinally during cavity filling to the same degree as cylindrical glass fibers, which reduces differential flow-induced alignment and produces more uniform shrinkage in the fill and transverse directions. Under ISO 3451-1 ashing, filler mass fraction is nominally 50%. Density measured according to ISO 1183-1:2019 is approximately 1.45 g/cm³. Water absorption after 24 h immersion in 23°C water is published as 0.20% under ISO 62. The PA 12 matrix contributes lower equilibrium moisture uptake than PA 6 or PA 66 because the aliphatic chain contains fewer amide groups per unit mass and a longer methylene sequence.
Mechanical response is dominated by high filler volume fraction and restricted matrix ductility. Published preliminary tensile values include a tensile strength at break of 45 MPa and an elongation at break of 3.0% when tested under ISO 527-2/5A/50. Flexural modulus is reported at 3.3 GPa under ISO 178. Notched Izod impact is published as 25 J/m under ASTM D256. The material therefore provides rigidity and dimensional control but limited post-yield energy absorption. The combination of low moisture uptake and stiff particulate reinforcement positions the product for short-cycle molding of dimensionally demanding parts that do not require fiber-grade impact resistance.
| Property | Standard | Typical published value |
|---|---|---|
| Filler content | ISO 3451-1 | 50% |
| Density | ISO 1183-1 | 1.45 g/cm³ |
| Water absorption, 24 h | ISO 62 | 0.20% |
| Tensile strength at break | ISO 527-2/5A/50 | 45 MPa |
| Elongation at break | ISO 527-2/5A/50 | 3.0% |
| Flexural modulus | ISO 178 | 3.3 GPa |
| Notched Izod impact | ASTM D256 | 25 J/m |
| Heat deflection temperature at 0.45 MPa | ISO 75-2/B | 150°C |
| Heat deflection temperature at 1.8 MPa | ISO 75-2/A | 80°C |
| Mold shrinkage | ISO 294-4 | 0.004 cm/cm |
Glass bead reinforcement introduces a discrete particulate stress-transfer mechanism that is geometrically distinct from short glass fiber. The spherical bead does not generate the same degree of flow-induced orientation, so mold shrinkage remains approximately isotropic. Published preliminary shrinkage of 0.004 cm/cm under ISO 294-4 is lower than typical unfilled PA 12 values and less directionally variable than glass fiber grades. The pressure-dependent shrinkage anisotropy is also reduced because spherical fillers do not form the layered shell-core orientation patterns common in fiber-filled parts. Knit lines and weld regions remain sources of reduced load capacity, but the absence of high-aspect-ratio fibers reduces the sharp strength loss associated with fiber-poor weld planes.
The low elongation at break of 3.0% indicates that design margins should avoid snap-fit deflection beyond the elastic strain limit. Fasteners and press-fits should be evaluated using stress concentration factors consistent with fully filled, low-ductility thermoplastics. Under cyclic loading, heat generation at stress concentrators can raise local temperature toward the 80°C heat deflection temperature at 1.8 MPa. Published data for fatigue life of this specific bead-filled configuration is limited, so endurance design should be based on component testing rather than extrapolation from unreinforced PA 12 behavior.
Continuous service at elevated temperature is bounded by the PA 12 melting point and the loaded heat deflection temperature. At 0.45 MPa, HDT is published at 150°C, but at 1.8 MPa the value falls to 80°C. The thermal transition is therefore load dependent. In humid environments, the glass bead filler reduces the dimensional movement caused by moisture uptake because the filler does not swell with water. The base PA 12 matrix has lower equilibrium moisture absorption than PA 6 or PA 66, reducing swelling and lowering the risk of electrical connector terminal loosening in humidity-cycled service.
The compound is processable on conventional three-zone injection molding machines with screw L/D ratios between 20:1 and 25:1. A low-compression screw with compression ratio near 2.5:1 reduces glass bead fracture and melt temperature overshoot. Production-scale experience reported by RTP Company indicates that open check rings and free-flowing nozzle tips are preferred to prevent particulate packing at high screw recovery speeds. Melt pressure instability has been reported on 25 mm twin-screw compounding lines with L/D 40:1 when the rear barrel temperature exceeds 240°C, leading to surface splay and dimensional drift in downstream molding.
Drying is required before molding. The preliminary processing notes recommend 4 h at 80°C in a desiccant dryer with a dew point of -40°C and a target moisture content below 0.10%. Although PA 12 is less moisture-sensitive than PA 6 or PA 66, excess surface moisture causes splay and weakens weld lines. Melt temperature should be maintained between 220°C and 240°C. A typical barrel profile is rear 210–230°C, middle 220–240°C, front 230–250°C, and nozzle 230–250°C. Mold temperature is recommended between 40°C and 80°C. Injection pressure should be set to fill the cavity without excessive shear; published suggested values range from 70 MPa to 120 MPa. Back pressure should be limited to 0.5–2.0 MPa to prevent melt overheating.
Residence time is an operational boundary. Exposure above 260°C for longer than 8 min may cause yellowing, hydrolytic degradation of the PA 12 matrix, and a reduction in impact-resisting capacity. The material is not recommended for use with unspecified aromatic amine heat stabilizers or powder-coated regrind streams that may shift crystallization kinetics and weld-line performance. When regrind is used, batch-to-batch melt viscosity should be monitored by capillary rheometry or melt index testing because glass bead attrition during repeated processing can alter particle size distribution and lower compound consistency.
The bead-filled system is typically used for components requiring tight dimensional control rather than high toughness. Candidate applications include single-axis brackets, encoder housings, optical sensor mounts, pump impeller shrouds, and electrical connector bodies where moisture absorption must remain low. For connector housings, the dimensional advantage of PA 12 under ISO 62 moisture exposure is relevant because terminal retention depends on post-molding shrinkage stability. The upper continuous service temperature should remain below the 80°C HDT at 1.8 MPa unless mechanical loads are reduced. Published data for specific application performance is limited to customer qualification programs and should not be inferred from the preliminary datasheet alone.
At the same nominal 50% filler mass fraction, glass-fiber-reinforced PA 12 produces higher tensile strength, higher flexural modulus, and higher notched impact than glass bead. The fiber-reinforced grade develops mechanical anisotropy because fibers align in the direction of melt flow. The bead-filled grade sacrifices some stiffness and toughness to obtain uniform shrinkage and reduced warpage. The difference is critical in flat or cylindrical parts with multiple gates, where fiber orientation produces differential shrinkage between flow and transverse directions and can cause post-molding bow.
| Property | RTP 200 F GB 50 preliminary | Unfilled PA 12 typical range | 50% glass-fiber PA 12 typical range |
|---|---|---|---|
| Density | 1.45 g/cm³ | 1.01–1.04 g/cm³ | 1.55–1.60 g/cm³ |
| Tensile strength at break | 45 MPa | 40–50 MPa | 130–150 MPa |
| Flexural modulus | 3.3 GPa | 1.4–1.6 GPa | 12–14 GPa |
| Notched Izod impact | 25 J/m | 50–80 J/m | 80–100 J/m |
| Heat deflection temperature at 1.8 MPa | 80°C | 50–60°C | 160–180°C |
| Mold shrinkage | 0.004 cm/cm approximately isotropic | 0.012–0.015 cm/cm | 0.002–0.006 cm/cm directional |
The comparative matrix shows that replacing glass bead with glass fiber does not produce a direct property upgrade; it changes the failure mode and dimensional behavior. The glass-fiber grade is stiffer and stronger but more anisotropic and more prone to warpage. The glass bead grade is lower in toughness but more suitable when roundness, flatness, and mating dimensions must be held across varying flow paths. Selection between the two configurations should be based on a part-level tolerance analysis, gate location, and the allowable post-molding dimensional deviation under ISO 294-4 test plaques.
Because the current document is a preliminary datasheet, published data for this specific bead-filled configuration are limited to the property tables and processing notes released by RTP Company. Production batches made before final product standardization may exhibit wider melt-viscosity excursions and slight differences in bead size distribution, which can alter surface gloss and knit-line strength. Users should confirm final regulatory status under REACH, RoHS 2011/65/EU, and application-specific conformance standards with RTP Company before production qualification. No food-contact, potable-water, medical, or implantable application is implied by the preliminary datasheet unless specific regulatory documentation is issued by the manufacturer.
