| HS Code | 391397 |
| Materialtype | Glass-fiber reinforced polyamide 12 (PA12) |
| Glassfibercontent | 25% |
| Appearance | White to light gray powder |
| Particlesized50 | 60 µm |
| Bulkdensity | 0.46 g/cm³ |
| Particledensity | 1.13 g/cm³ |
| Meltingpoint | 180 °C |
| Tensilestrength | 50 MPa |
| Tensilemodulus | 3600 MPa |
| Elongationatbreak | 5% |
| Charpyimpactstrength | 4.5 kJ/m² |
| Heatdeflectiontemperature | 165 °C |
As an accredited Prodways PA12-GF 2500 Powder for Laser Sintering factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Supplied in sealed, moisture-protected 10 kg boxes, ensuring safe handling and storage of Prodways PA12-GF 2500 powder for laser sintering. |
| Shipping | Prodways PA12-GF 2500 Powder ships in sealed, moisture-resistant containers to prevent caking. Handle with care to avoid dust generation. Not DG per transport regulations, but avoid ignition sources. Package securely to prevent leakage during transit. Store dry and cool. |
| Storage | Store in a cool, dry, well-ventilated area, away from heat, sparks, and open flames. Keep the container tightly sealed to prevent moisture absorption, which can degrade powder flow. Avoid exposure to sunlight and incompatible materials such as strong oxidizers. Maintain temperatures below 35°C and use grounded equipment to control static buildup. |
| Shelf Life | Store in a sealed, dry container away from heat and humidity. Shelf life is typically 12 months from manufacture date. |
In underhood charge-air duct end fittings and EGR-cooler support brackets, PA12-GF 2500 is processed at a layer thickness of 100–120 µm with the powder bed held at 168–172°C under nitrogen to limit thermal oxidation. The nominal glass-fibre loading associated with the GF 2500 grade is 25 wt%, which increases melt viscosity and narrows the laser energy window compared with unfilled PA12. Energy density below 0.25 J/mm³ produces interlayer porosity above 3% and weak Z-axis fusion, while energy density above 0.5 J/mm³ causes matrix degradation and glass fibre pull-out at fracture surfaces. On CO₂ laser sintering systems operating at 10.6 µm, production settings commonly use scan spacing of 0.2–0.3 mm and optical power of 25–40 W, with scan speed adjusted to maintain the energy density window. After sintering, parts are annealed for 2 h at 150°C under nitrogen to relieve residual stress and stabilise dimensions. Terminal components include intercooler end caps, charge-air sensor bosses, and EGR cooler support brackets. Dimensional tolerance after thermal cycling per ISO 16750-4 is held within ±0.15% of nominal for features longer than 100 mm when the annealing cycle is applied. Exposure to engine coolant at 85°C for 1000 h is evaluated by tensile strength retention according to ISO 527-2, and hot air aging per ISO 188 at 120°C shows embrittlement after 500–1000 h if wall thickness falls below 2 mm. Direct threading into the glass-filled matrix produces inconsistent clamp load; M6 threaded interfaces require inserted brass bushes or helical inserts to avoid boss cracking at tightening torque above 3 N·m. The lower elongation of glass-filled PA12 also constrains snap-fit design, and service teams replace snap features with bolted flanges when the continuous air temperature exceeds 95°C.
| Validation Step | Test Standard | Condition | Acceptance Criterion |
|---|---|---|---|
| Thermal cycling | ISO 16750-4 | -40°C to 125°C, 100 cycles, 2 h dwell | No crack longer than 3 mm |
| Hot air aging | ISO 188 | 120°C, 1000 h | Tensile strength retention ≥ 70% |
| Tensile properties | ISO 527-2 | Type 1A specimen, 5 mm/min | Batch-to-batch variation ≤ 10% |
| Coolant compatibility | ISO 1817 | Glycol-water 50:50, 85°C, 168 h | Volume change ≤ +2.0% |
| Glass dispersion | ISO 3451-4 | Ash content after 600°C | Filler fraction within ±2 wt% of batch target |
Hydraulic manifold prototypes and short-run service replacement blocks are built from PA12-GF 2500 when the production alternative is machined aluminium or cast iron. Because the sintered surface contains open porosity at the coarsest particle interfaces, manifold bodies are sealed by anaerobic methacrylate infiltration applied under vacuum at 0.08–0.1 MPa followed by thermal curing at 80°C for 30 min. After sealing, hydrostatic pressure testing is conducted on a water hydraulic test stand with a ramp rate of 0.5 MPa/s to detect weeping and structural rupture. The design minimum wall thickness is 3 mm for ports up to G 1/4, and sealing faces are machined to a flatness of 0.1 mm per 100 mm before O-ring groove finishing. Terminal products include hydraulic power unit manifolds, pneumatic valve islands, and fuel rail prototype blocks. Continuous immersion in IRM 903 reference mineral oil at 80°C per ISO 1817 typically yields volume change below +2.0%, but published data for this specific configuration is limited and coupon-level testing is required for each powder refresh ratio. The glass filler accelerates wear on cutting tools during secondary machining, so carbide reamers with through-coolant delivery are used for H7 port bores. Because recycled powder accumulates fractured glass fibres and PA12 fines, melt flow rate drift is measured by ISO 1133-1 at 235°C under 2.16 kg. A virgin powder refresh ratio of 40–50 wt% is maintained to hold tensile strength retention above 85% of virgin values and to limit dimple formation on sealed surfaces.
Metrology nests and assembly fixtures for robotic workcells are produced with conformal vacuum channels and low mass when cast aluminium tooling is too heavy for the robot end effector. The 25 wt% glass filler lowers the coefficient of linear thermal expansion to approximately 50–80 µm/m·K in the X-Y build plane when measured by ISO 11359-2, and reduces thermal drift during shop-floor temperature swings. Vacuum nest plates are wet-sanded at sealing faces to remove powder agglomerates, then fitted with porous sintered inserts or groove gaskets to distribute vacuum at -60 kPa to -80 kPa. Locating pin holes are machined to H7 tolerance and pressed with hardened steel bushes because direct glass-filled PA12 bores lose diameter after repeated pin insertion. Brass threaded inserts for M4 and M5 clamp screws are installed with ultrasonic insertion equipment at 20 kHz and horn pressure of 0.2–0.4 MPa. Boss outer diameter is maintained at 2.5× the insert nominal diameter to avoid low-elongation fracture of the glass-filled matrix. For a 200 mm reference gauge length, dimensional drift after 48 h conditioning at 23°C ± 2 K is controlled below 0.05 mm when stress-relief annealing is performed before finish machining. The fixture material is not static dissipative; surface resistivity usually exceeds 10¹² Ω per IEC 62631-3-2, so direct contact with ESD-sensitive devices requires local static-dissipative inserts or controlled ionisation in the assembly cell.
Terminal boxes and optical sensor housings mounted on robot end effectors are built from PA12-GF 2500 when stiffness, impact resistance, and powder-bed geometric freedom are more important than low part cost. The glass-filled material is processed with a minimum wall thickness of 1.5 mm for enclosure bodies, but rib root fillets are kept at 0.5 mm to prevent local porosity at sharp transitions. Enclosure halves are joined by solvent-bonded flanges or mechanical fasteners, with the flange width held to 3 times the wall thickness for seal compression. O-ring grooves are machined after sintering and designed for 20–25% compression of a 2 mm FKM cord. Vibration robustness is screened by random vibration testing under IEC 60068-2-64, with modal analysis used to shift enclosure side-wall resonance away from robot-axis motion frequencies. Where UL 94 V-0 flammability is required, PA12-GF 2500 is typically unsuitable without an intumescent or ceramic coating; unmodified glass-filled PA12 normally meets only the HB classification at 3 mm thickness under IEC 60695-11-10. Electrical clearance and creepage for pollution degree 2 are designed according to IEC 60664-1, and terminal blocks are heat-staked or insert-moulded into machined pockets rather than screwed directly into the sintered matrix. The compliance matrix below applies to industrial sensor enclosures operating at 24 V DC or lower in non-condensing indoor environments.
| Requirement | Standard | Condition | Control Limit |
|---|---|---|---|
| Ingress protection | IEC 60529 | Dust and water spray | IP54 minimum |
| Vibration | IEC 60068-2-64 | 10–500 Hz, 2.5 Grms, 2 h per axis | No bracket crack > 2 mm |
| Clearance/creepage | IEC 60664-1 | Pollution degree 2, 24 V DC | Clearance ≥ 0.2 mm, creepage ≥ 0.4 mm |
| Flammability | IEC 60695-11-10 | 3 mm specimen | HB classification |
| Surface resistivity | IEC 62631-3-2 | 23°C, 50% RH | Insulative, > 10¹² Ω |
Low-flow coolant pump volutes, metering pump casings, and chemical dosing adapters are built from PA12-GF 2500 for rapid replacement of cast components in pilot-scale fluid lines. Pump volute designs are evaluated by modal analysis because the glass filler raises flexural modulus but reduces the damping coefficient compared with unfilled PA12, pushing resonance peaks toward higher frequencies and increasing transmissibility at driven frequencies near 60 Hz. Side-wall thickness is increased to 4 mm for volutes with impeller diameters up to 80 mm, and mounting flanges are reinforced with embedded steel ring inserts to prevent compression set and creep. Impeller prototypes with blade thickness below 1.2 mm are oriented at 15–30° to the recoater direction to reduce shear forces on protruding features, and blade surfaces are vapour-honed after sintering to remove glass fibre ends that would initiate cavitation erosion. Published data for this specific configuration is limited; therefore, pressure pulse and hot-water aging tests are performed on coupon sets built in the same orientation and powder refresh fraction as the production parts. Hydrolytic aging in water at 60°C for 1000 h is measured by tensile strength retention per ISO 527-2, and the operational pH boundary is held between 4 and 9 to avoid acid hydrolysis of the PA12 matrix. Seal land flatness after stress-relief annealing is kept below 0.08 mm over 50 mm to maintain mechanical seal contact pressure.
Camera gimbal brackets, LiDAR sensor platforms, and battery cooling ducts are produced from PA12-GF 2500 where mass reduction and specific stiffness govern airframe attachment design. The density after sintering is typically 1.25–1.30 g/cm³, and the in-plane flexural modulus determined by ISO 178 is used to compare specific stiffness against machined aluminium. Recycled powder with broken glass fibres reduces the in-plane modulus and can increase part-to-part scatter, so dynamic test coupons are built at 0%, 30%, and 50% recycled content to establish the usable refresh window for airframe brackets. Rib thickness is held above 1.0 mm with rib root fillets of 0.5 mm to control warpage during cooling, and minimum wall sections are 1.2 mm. Threaded inserts are used for all load-bearing fasteners to prevent tension failure of the low-elongation PA12 matrix under vibration. Fatigue loading for electrically isolated antenna mounts is screened by IEC 60068-2-6 sinusoidal sweeps, and UV conditioning of black pigmented parts is conducted per ISO 4892-2 before outdoor deployment. Terminal parts include LiDAR sensor brackets, antenna ground plane spacers, electronic speed controller cooling scoops, and battery tray hold-down blocks. Parts exposed to salt spray are coated with a continuous epoxy primer or replaced on a defined calendar interval because the glass fibre interface can wick moisture under cyclic wind-driven rain, and isolated fibre ends at the sintered surface act as capillary initiation sites.
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Prodways PA12-GF 2500 Powder for Laser Sintering is a glass-fibre-reinforced polyamide 12 feedstock formulated for powder bed fusion systems producing stiff, dimensionally stable plastic components. The product designation carries the 2500 suffix consistent with a nominal glass-fibre loading of 25% by mass in a nylon-12 matrix. The material is specified where unfilled PA12 grades show excessive deflection or creep under mechanical load, and where carbon-fibre-filled grades are excluded by electrical insulation or surface-quality requirements. The powder is used primarily for functional prototypes, production jigs, fixtures, under-hood brackets, robotic end-of-arm tooling components, sensor mounts, and low-volume industrial parts that must maintain flatness after repeated thermal excursions.
The reinforcement phase increases tensile modulus and tensile strength at the expense of ductility. Supplier-published mechanical characterisation for PA12-GF 2500, obtained from laser-sintered test coupons, positions the material within the following typical ranges: tensile modulus 3500–4300 MPa when tested to ISO 527-1/-2; tensile strength 52–60 MPa; elongation at break 2–4%; flexural modulus 3200–4000 MPa under ISO 178; and heat deflection temperature under 0.45 MPa of 140–155 °C according to ISO 75-2/B. The low elongation range means snap-fit and impact-loaded features designed for unfilled PA12 cannot be transferred without geometry or function changes.
| Property | Test method | Typical published range |
|---|---|---|
| Bulk density, powder | ISO 60 | 0.55–0.65 g/cm³ |
| Fused part density | ISO 1183-1 | 1.22–1.28 g/cm³ |
| Melting peak temperature | ISO 11357-1/-3 | 175–185 °C |
| Tensile modulus | ISO 527-1/-2 | 3500–4300 MPa |
| Tensile strength | ISO 527-1/-2 | 52–60 MPa |
| Elongation at break | ISO 527-1/-2 | 2–4% |
| Flexural modulus | ISO 178 | 3200–4000 MPa |
| Heat deflection temperature, 0.45 MPa | ISO 75-2/B | 140–155 °C |
| Charpy impact, unnotched | ISO 179-1/1eU | 25–35 kJ/m² |
Compared with unfilled PA12, the glass-filled grade raises tensile modulus by approximately 2.0–2.5× and lowers unnotched Charpy impact by 40–60%. The reduction in impact performance is caused by fibre ends acting as stress concentrators within the matrix; the effect is more severe in the z-axis where interlayer fusion is lower. Users should build tensile test bars in both the x-y and z orientations and compare the z-axis tensile strength to the internal acceptance limit, because z-axis strength typically falls 10–25% below x-y strength in laser-sintered filled polyamides.
Because glass fibres align in the powder spreading direction, tensile modulus and tensile strength in the x-y plane are higher than in the z-axis. The principal stress axis should therefore be placed parallel to the x-y plane during build preparation. If a part must bear load through the z-axis, the expected tensile strength should be derated by 10–25%, and a z-axis tensile specimen should be produced to establish the actual derating factor on the target machine. The orientation effect is lower than that of carbon-fibre-filled PA12 but is not negligible.
The PA12 matrix is hygroscopic. Moisture uptake in the reinforced composite is lower than unfilled PA12 because the glass-fibre mass fraction is not hygroscopic, but the powder still requires controlled storage. Under 23 °C/50% RH, equilibrium moisture uptake is typically below 1.0% by mass. If powder has been exposed to relative humidity above 60%, pre-drying at 80 °C for 12–24 h is required before sintering to reduce porosity and melt instability. Karl Fischer titration according to ISO 15512 can be used to verify moisture content below 0.5% before production builds.
Used powder should be screened to remove agglomerates and fibre-rich fines. A refresh ratio of 30–50% virgin powder is typical for glass-filled PA12 on production laser-sintering platforms; higher reuse fractions increase the risk of surface roughness and edge curl because the glass fibres may degrade slightly under repeated thermal exposure and the nylon fraction undergoes oxidative ageing. Storage should be sealed under dry conditions, and the material should be kept away from carbon black-filled or electrically conductive powders to avoid cross-contamination that alters laser absorption.
Glass fibres accelerate non-isothermal crystallisation of PA12 by acting as heterogeneous nucleation sites. This narrows the processing window relative to unfilled PA12. If part-bed temperature is too low, fused layers contract and undergo edge curl, delamination, and out-of-plane distortion, especially in long flat parts with abrupt changes in cross-section. If part-bed temperature is too high, the powder loses free-flowing behaviour and partial sintering occurs on the recoater path, producing surface defects known as orange peel.
Production-scale laser-sintering platforms with 10–30 W CO₂ lasers and build volumes in the 300–500 mm diagonal range typically require the part-bed temperature to be held within 172–177 °C for glass-filled PA12. Layer thickness is usually set to 100–120 µm, and laser fill power is increased by 10–20% relative to unfilled PA12 to compensate for the higher thermal conductivity of the glass-filled material. The laser scan spacing should be reduced until the overlap factor produces fully dense side walls without excessive growth in the x-y plane. Operators should verify the actual bed temperature using an infrared pyrometer or calibrated thermal camera because in-chamber thermocouple readings can deviate from the powder surface temperature by several kelvin.
Published process data for this specific configuration is limited outside the manufacturer’s application laboratory; therefore, the above values are initial process windows and must be confirmed on the target machine using test geometries. Field operation shows three recurring failure modes when process controls are inadequate: z-axis delamination at thin bosses, fibre accumulation on the recoater after extended use, and non-uniform part growth near the build border. The first is traced to insufficient laser energy density or low part-bed temperature; the second to excessive fines or moisture; the third to temperature gradients across the build platform. All three are addressed by strict powder screening, environmental control, and bed temperature mapping.
Components built from PA12-GF 2500 are used in automotive under-hood brackets, sensor mounts, pneumatic manifold housings, robotic gripper fingers, assembly fixtures and structural drone components. The grade is not normally selected for snap-fit housings, living hinges, impact shields, or parts requiring repeated high-elongation flexing because the elongation at break is below 4%. For fluid-contacting parts, the sintered surface is porous and must be sealed by vapour smoothing, resin infiltration, or coating; continuous immersion without sealing is outside the material’s general use envelope. Geometric tolerance must be established by process capability study on the specific laser-sintering platform; no universal tolerance can be stated without reference to part geometry, orientation, and thermal history.
Carbon-fibre-filled PA12 grades typically offer higher tensile modulus and higher thermal conductivity than PA12-GF 2500, but they are electrically conductive or dissipative and often show greater z-axis mechanical anisotropy due to fibre orientation in the recoating direction. Glass-fibre-filled PA12 remains electrically insulating and is therefore preferred where the part must not create a short-circuit path or affect capacitive sensing. The lower laser absorption of glass fibre compared with carbon filler also reduces the risk of over-sintering at thin walls and allows more stable energy density control in fine features.
Mineral-filled PA12 powders are sometimes used for isotropic stiffness improvement with lower fibre protrusion. They generally deliver lower tensile strength than glass-fibre grades and can display higher melt viscosity because of the platelet geometry of the mineral filler. The glass fibre in PA12-GF 2500 produces a visible surface roughness that may require post-finishing; process engineers should not specify this material for cosmetic surfaces without an additional coating or polishing step.
| Property direction | PA12-GF 2500 | Unfilled PA12 | Typical change |
|---|---|---|---|
| Tensile modulus | 3500–4300 MPa | 1500–1800 MPa | 2.0–2.5× |
| Tensile strength | 52–60 MPa | 44–50 MPa | +10–25% |
| Elongation at break | 2–4% | 10–25% | reduction greater than 75% |
| Heat deflection temperature, 0.45 MPa | 140–155 °C | 95–115 °C | +30–50 K |
| Charpy impact, unnotched | 25–35 kJ/m² | 50–80 kJ/m² | −40–60% |
| Fused part density | 1.22–1.28 g/cm³ | 0.95–1.05 g/cm³ | +20–30% |
Against unfilled PA12, the glass-filled grade is specified when the part must resist creep at elevated temperature. The heat deflection temperature rises from approximately 95–115 °C for unfilled PA12 to 140–155 °C for PA12-GF 2500 under 0.45 MPa. This shift is critical in under-hood environments where service temperatures can exceed 90 °C. PA12-GF 2500 also exhibits lower relative elongation, which reduces the ability of a part to absorb overload; the design approach should emphasise thick sections, radii, and ribs rather than thin snap features.
PA12-GF 2500 inherits the base polymer’s resistance to aliphatic hydrocarbons, diesel fuel, lubricating oils, greases, and many solvents, but it is attacked by concentrated mineral acids, formic acid, and strong oxidisers. Glass reinforcement does not eliminate stress cracking but reduces the accompanying strain under a given load, which can delay the onset of environmental stress cracking. For fluid exposure, testing should follow ISO 22088-2 or an application-specific method under representative temperature and strain. Outgassing and flammability characteristics are not defined by the base powder alone; if used in electronics or transport interiors, the part should be tested to UL 94 or the relevant sector standard after post-processing because porosity and cleaning residues affect ignition behaviour.
Regulatory documentation should be requested from the supplier for REACH and RoHS status. The material is not marketed as a food-contact or medical-grade powder; parts intended for those regulated applications must be validated under the applicable end-use standard, such as EU 10/2011 or ISO 10993 as appropriate, rather than relying on the base polymer classification alone.
