| HS Code | 629132 |
| Density | 1.49 g/cm³ |
| Water Absorption 24 H | 0.30 % |
| Melt Volume Rate 230 C 2 16 Kg | 5.0 cm³/10 min |
| Melting Temperature Dsc | 178 °C |
| Heat Deflection Temperature 0 45 Mpa | 125 °C |
| Heat Deflection Temperature 1 80 Mpa | 70 °C |
| Tensile Modulus | 7000 MPa |
| Tensile Strength | 55 MPa |
| Elongation At Break | 3.0 % |
| Charpy Impact Strength 23 C | 15 kJ/m² |
| Charpy Notched Impact Strength 23 C | 3.0 kJ/m² |
| Shore D Hardness | 75 |
As an accredited Barlog Plastics KEBABLEND H 49.1800 High Density PA12 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Barlog Plastics KEBABLEND H 49.1800 High Density PA12 is supplied in 25 kg sealed polyethylene-lined paper bags. |
| Container Loading (20′ FCL) | 20′ FCL loading: packed drums/bags of Barlog KEBABLEND H 49.1800 PA12, secured, ventilated, labeled per regulations. |
| Shipping | Barlog Plastics KEBABLEND H 49.1800 High Density PA12 ships as a non-hazardous thermoplastic granulate. Pack in sealed moisture-barrier bags on pallets, protected from heat and humidity. No special transport classification required, but avoid direct sunlight and stacking damage. Standard dry freight, with proper labeling and handling for safe delivery. |
| Storage | Store in original, unopened packaging in a cool, dry, well-ventilated area away from direct sunlight, heat sources, and moisture. Keep sealed when not in use to prevent water absorption. Avoid dust accumulation and static discharge. Follow recommended shelf life; keep containers intact to preserve material quality. |
| Shelf Life | Shelf life: 24 months from manufacturing date when stored sealed, dry, and at room temperature. |
When lead-free mass loading is specified for injection-moulded components subject to EU end-of-life restrictions, KEBABLEND H 49.1800 High Density PA12 is processed as an undiluted, high-specific-gravity compound in cold-runner or hot-runner moulds. The downstream formulation addition ratio for mass-loaded articles is 100 wt% virgin compound; regrind is limited to 15 wt% and must be free of metallic contamination from granulator wear. If external colour is required, 1.0–2.0 wt% of a PA12-compatible masterbatch is added by tumble blending for 15 min, but the masterbatch carrier must not reduce density below the component’s mass specification. Compliance at the finished-part level is assessed against RoHS Directive 2011/65/EU Annex II for lead substitution, REACH Regulation (EC) No 1907/2006 candidate list screening, and DIN EN ISO 1183-1 for density verification. Downstream injection moulding is performed on a reciprocating-screw machine with a screw L/D ratio of 20:1 to 22:1 and a compression ratio of 1.8:1 to 2.2:1; barrel temperature profiling is set from feed to nozzle at 225 °C, 235 °C, 245 °C, and 250 °C, with mould temperature maintained at 70–90 °C. Injection velocity is 80–140 mm/s, hold pressure is 60–80 % of peak injection pressure, and back pressure is 30–60 bar. Venting depths of 0.02–0.04 mm are used along the parting line to prevent gas burn streaks from filler moisture. Production-scale clamp force requirements typically fall between 8 kN/cm² and 12 kN/cm² of projected area. Terminal product groups include rotating-equipment counterweights, lead-free wheel balance masses, marine ballast plates, and high-density damping inserts for industrial machine guards.
For non-patient-contact structural components in diagnostic imaging equipment, the compound is evaluated as a lead-free alternative for X-ray shielding housings and collimator frames. The formulation addition ratio for shielding-critical parts is 100 wt% virgin KEBABLEND H 49.1800; regrind is restricted to 10 wt% in non-load-bearing regions because filler distribution variations above this threshold can produce local density differences that affect shielding uniformity. If colour coding is required, masterbatch addition is 0.5–1.5 wt% and must be selected from suppliers with documented absence of pigments that contain elements with high atomic number, unless their effect on attenuation is quantified. Industry compliance for medical electrical equipment is addressed through IEC 60601-1:2005/AMD2:2020 clause 8.6 for mechanical strength and resistance to deformation, IEC 61331-1:2014 for protective devices against diagnostic medical X-radiation, and ISO 10993-5:2009 if the manufacturer classifies the part as a skin-contacting material. Drying is mandatory at 80 °C for 4–6 h to a residual moisture of <0.1 % measured by ISO 15512:2019. Downstream processing is injection moulding in a controlled environment with melt temperature 235–250 °C, mould temperature 80–90 °C, and hot-runner gate diameter 1.0–1.8 mm. Hold pressure is set at 600–1000 bar; because high-density filler increases thermal conductivity, cooling time is 20–40 s per 6 mm wall thickness. Thick shielding sections require extended pre-compression at 800 bar for the first 3 s to prevent shrinkage voids at the core. Published linear attenuation data for this specific grade at diagnostic photon energies is limited; shielding thickness must be derived from component-level measurement under IEC 61331-1:2014 rather than from nominal filler content alone. Terminal product types include X-ray collimator housings, detector enclosure side plates, shielding tube stands, and portable gamma camera structural shields.
| Control parameter | Test method / standard | Condition | Acceptance criterion |
|---|---|---|---|
| Residual moisture | ISO 15512:2019 | granule sample at hopper inlet | <0.1 % |
| Density | ISO 1183-1:2019 | moulded plaque 4 mm thickness | within part drawing tolerance |
| Mechanical enclosure strength | IEC 60601-1:2005/AMD2:2020 clause 8.6 | finished enclosure | no cracking or separation |
| Diagnostic radiation attenuation | IEC 61331-1:2014 | shielded component | measured transmission factor per system specification |
| Substance restrictions | RoHS Directive 2011/65/EU Annex II | homogeneous material | Pb < 1000 ppm, Cd < 100 ppm |
For lead-free recreational weighting and marine tackle components, high-density PA12 is injected into multi-insert moulds to produce parts that replace cast lead without requiring secondary coating. The addition ratio in downstream moulding is 100 wt% pre-dried compound; regrind may be used up to 20 wt% for non-critical cosmetics only when in-house granulator screens are 4 mm or finer and density checks confirm variance below ±0.03 g/cm³. No reinforcing fibres are added because fibre orientation would reduce isotropy of mass distribution; if UV exposure is required, 1.0–2.0 wt% of a carbon-black masterbatch is compounded into the melt stream at the feed throat. Compliance at finished-part level is evaluated through REACH Regulation (EC) No 1907/2006 Annex XVII entry 63 for lead restrictions in articles, CPSIA Section 101 if the product is intended for children’s products, and ASTM F963-23 for toy safety when applicable. Downstream process is injection moulding with melt temperature 235–250 °C, mould temperature 60–80 °C, injection pressure 700–1200 bar, and cooling time 15–25 s for wall thickness 3–5 mm. Screw rotation is capped at 80 rpm to limit filler attrition, and back pressure is held at 20–40 bar to avoid temperature overshoot at the check ring. Mould inserts with surface roughness VDI 3400 Ref 24 are used to maintain grip texture on marine tackle surfaces. Terminal product types include fishing sinkers and jig heads, diving weight inserts, golf club backweights, tennis racquet handle weights, and archery stabilizer cartridges.
Industrial pneumatic connectors and compressed-air couplings moulded from high-density PA12 demand gate and runner balance strategies that differ from unfilled PA12 because mineral or metallic filler platelets increase apparent melt viscosity at low shear rates. The downstream formulation addition ratio is 100 wt% original compound; if regrind is allowed for non-pressure-bearing parts, it is capped at 15 wt% and dried identically to virgin material. No external mould-release agents are permitted because residue migrates to sealing faces and interferes with ISO 14743:2020 leak-tightness verification. Drying follows ISO 15512:2019 to a residual moisture of <0.1 %. Processing in multi-cavity hot-runner moulds is performed with manifold temperature 240–260 °C, melt temperature 235–250 °C, and mould temperature 80–90 °C. Gate diameter of 0.8–1.5 mm is used for valve-gated drops; high-density compound freezes rapidly, so gate freeze time must be confirmed by short-shot trials rather than estimated from unfilled PA12 data. Hold pressure is set at 700–1100 bar and held for 3–6 s; injection speed is 60–100 mm/s to prevent jetting at small gates. Screw decompression is limited to 3 mm to avoid air entrapment that can weaken weld lines at fitting barbs. Multi-cavity hot-runner systems require rheological balancing of each drop to maintain cavity-to-cavity mass variation below 0.5 %; otherwise internal bore roundness falls outside the IT10 tolerance band specified for push-in fitting engagement. Terminal product types include push-in fittings, threaded adapter bodies, flow-control valves, filter-regulator-lubricator housing caps, and compressed-air manifold sections.
Mass-loaded vibration control parts in automotive powertrain and industrial compressor housings rely on the compound’s density to shift natural frequencies and reduce transmitted vibration. The formulation addition ratio in this application is 100 wt% predried material, with regrind limited to 10 wt% in non-appearance zones because regrind particle-size distribution alters melt density and can create visible flow lines on class-A surfaces. Overmoulding with thermoplastic elastomers is performed by moulding the high-density PA12 substrate first at 235–250 °C and then injecting the TPE at 200–220 °C; no tie-layer is required when mechanical interlocking features are provided. Compliance for automotive interior parts is evaluated through VDA 277 for total VOC emissions, ISO 12219-1:2021 for volatile organic compounds in passenger compartment interiors, and REACH Regulation (EC) No 1907/2006 Annex XVII restrictions. Downstream injection moulding uses a screw with L/D 22:1 to 24:1, low back pressure of 20–40 bar, and mould temperature of 70–90 °C. Because high specific heat of filled PA12 can cause sink marks near bosses, gate positions are placed adjacent to thick ribs and the hold pressure profile is staged: 800 bar for 2 s, 400 bar for 4 s, 100 bar for 6 s. On manufacturing lines producing 80,000 shots per year, screw wear at the compression zone is monitored by plastication time drift exceeding 0.5 s; this indicates melt-quality loss and requires screw replacement. Terminal product types include engine mass dampers, seat-adjuster counterweights, HVAC compressor isolation brackets, and machine tool spindle counterweights.
In seawater-exposed ballast and cable-retention hardware, high-density PA12 is specified where mass, dimensional stability, and resistance to hydrolytic attack are required simultaneously. Formulation addition ratio for these critical components is 100 wt% virgin compound; regrind is prohibited in safety-critical load paths unless requalification under ISO 23936-2:2011 demonstrates retained tensile strength at 40 °C in synthetic seawater. The downstream process is injection moulding of thick-walled sections, with melt temperature limited to 230–245 °C to reduce thermal degradation at extended residence times, and mould temperature maintained at 80–100 °C to improve crystallinity and minimise post-mould moisture absorption. Screw speed is 40–80 rpm, and maximum residence time is 5 min. Drying is mandatory at 80 °C for 6 h to <0.1 % moisture. Compliance includes ISO 23936-2:2011 for polymer materials in downhole and subsea equipment, NORSOK M-710:2014 for qualification of non-metallic sealing materials, and REACH Regulation (EC) No 1907/2006 SVHC screening. Thick-section cooling time is calculated at 8–12 s/mm wall thickness, and hot-runner drops are avoided in sections above 12 mm because gate freeze creates internal stresses that accelerate seawater diffusion along filler-matrix interfaces. Machined inserts and threaded bushings are post-mould heat stabilised at 100 °C for 2 h before assembly to relieve moulded-in residual stress. Published long-term seawater aging data for this specific grade is limited; qualification must be repeated for each production batch because filler distribution and crystalline morphology affect diffusion rates of water at 40 °C. Terminal product types include subsea cable clamps, buoyancy module insert plates, ROV ballast plates, and anti-scour pad weights.
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Barlog Plastics KEBABLEND H 49.1800 High Density PA12 is a pelletised polyamide 12 compound in which the H prefix indicates a high-density modification of a semicrystalline PA12 matrix. The base polymer is designated PA12 under ISO 1043-1 and is selected for comparatively low water uptake, sub-zero ductility, and resistance to hydrocarbon environments. High density is achieved through dense inorganic filler loading; the exact filler chemistry, loading level, density, and lot-specific mechanical values are defined by the Barlog Plastics technical data sheet and certificate of analysis rather than by the grade code alone. Published data for this specific configuration is limited, and the processing and property ranges discussed below are therefore compound-class benchmarks that must be verified against lot-specific documentation before tooling, simulation, or part certification.
In lot acceptance, density should be measured according to ISO 1183-1. High-density PA12 compounds commonly fall between 1.35 g/cm³ and 1.60 g/cm³, although filled variants outside this window exist. A single melt flow-rate value without a defined temperature and piston load is insufficient for injection-moulding simulation because the filler system increases non-Newtonian behaviour. Melt volume-flow rate or melt mass-flow rate should be determined by ISO 1133-1 under supplier-selected conditions, and capillary viscometry according to ISO 11443 at 240 °C to 280 °C and apparent shear rates from 100 s⁻¹ to 1000 s⁻¹ is recommended for injection simulation.
Before processing, the material must be dried to a residual moisture level below 0.10 % by weight when measured according to ISO 15512 or a calibrated halogen analyser cross-checked to that method. Drying in a closed-loop desiccant dryer with a dew point of −30 °C or lower at 80 °C for 4 h to 12 h is typical for polyamide 12 compounds. Hopper residence time exceeding 24 h at temperature should be avoided unless the hopper is blanketed with dry air. Barrel melt-temperature settings commonly range from 240 °C to 280 °C measured at the nozzle, with mould temperature between 40 °C and 80 °C to balance crystallinity, surface quality, and sink-mark control. The dense filler increases melt viscosity and abrasive wear; injection units should be equipped with bimetallic barrels, hardened screw flights, and a wear-resistant check ring. Back pressure in hydraulic machines is typically maintained from 3 bar to 8 bar, and screw surface speed should be limited below 0.2 m/s when filler volume fraction is high. At upper melt-temperature settings, barrel residence time should not exceed 8 min; longer residence can shift viscosity through chain scission and can generate yellowing or carbonised deposits in hot-runner channels. Clamp force can be estimated from 0.5 kN/cm² to 0.8 kN/cm² of projected part area for stiff filled grades with thin walls, although long flow paths may require higher specific pressure.
Hot-runner systems with multiple gates are feasible, but flow-channel diameter should be increased relative to unfilled PA12 because the filled melt has reduced elasticity and shorter spiral-flow length under the same injection pressure. Weld-line locations inherit lower elongation at break due to planar filler orientation; published studies on mineral-filled engineering thermoplastics report weld-line tensile-strength reduction of 15 % to 30 % relative to the un-welded section. This reduction must be included in finite-element analysis or prototype testing. Mould shrinkage measured according to ISO 294-4 is anisotropic; for high-density filled PA12, flow-direction shrinkage is typically 0.3 % to 0.8 %, while cross-flow shrinkage may range from 0.7 % to 1.2 %.
Against unfilled polyamide 12, the high-density variant shifts density upward while lowering moisture uptake on a weight basis because the dense filler replaces a portion of the hygroscopic polymer phase. This substitution also reduces isotropic thermal expansion in the moulded part, but it increases anisotropic shrinkage in the flow direction and can reduce notched impact resistance. Table 1 summarises typical compound-class property windows for dry-as-moulded specimens; these ranges are not a substitute for the Barlog Plastics lot certificate for H 49.1800.
| Property | Test method | Unfilled PA12 | High-density PA12 compound |
|---|---|---|---|
| Density | ISO 1183-1 | 1.01–1.03 g/cm³ | 1.35–1.60 g/cm³ |
| Tensile modulus | ISO 527-1/-2 | 1100–1600 MPa | 3500–9000 MPa |
| Tensile strength at yield | ISO 527-1/-2 | 35–50 MPa | 45–70 MPa |
| Charpy notched impact strength at 23 °C | ISO 179-1/1eA | 5–15 kJ/m² | 3–8 kJ/m² |
| Water absorption at saturation 23 °C | ISO 62 | 1.4–1.8 % | 0.6–1.1 % |
| CLTE parallel, 23–80 °C | ISO 11359-2 | 100–140 ×10⁻⁶ K⁻¹ | 25–50 ×10⁻⁶ K⁻¹ |
The high-density PA12 values in Table 1 represent the filled compound class, not the exact H 49.1800 specification. Lot-specific data should be obtained before finite-element modelling or tooling release, and conditioned testing should be requested when the part operates at high relative humidity.
Polyamide 12 absorbs less water than polyamide 6 or polyamide 66 at equilibrium; its saturation water uptake at 23 °C in immersion testing under ISO 62 is commonly cited between 1.4 % and 1.8 % for unmodified resin. In high-density filled grades, the filler phase is largely non-hygroscopic, so measured mass increase is diluted to approximately 0.6 % to 1.1 % at saturation, depending on filler volume fraction and filler surface chemistry. This lower absolute moisture uptake reduces the post-moulding dimensional excursion seen in humid-service components. However, moisture still plasticises the PA12 matrix; tensile modulus in conditioned specimens may fall by 15 % to 30 % relative to dry-as-moulded values, while notched impact strength may rise by a similar order of magnitude. Accelerated conditioning should follow ISO 1110, and standard atmospheres should follow ISO 291 before final mechanical values are reported.
Thermal expansion under ISO 11359-2 is reduced by the filler network, especially in the flow direction. For filled PA12 compounds, coefficient of linear thermal expansion parallel to flow is often reported between 25 × 10⁻⁶ K⁻¹ and 50 × 10⁻⁶ K⁻¹, while cross-flow values may remain between 70 × 10⁻⁶ K⁻¹ and 110 × 10⁻⁶ K⁻¹. This anisotropy must be accepted in tool design unless the mould is gated for balanced flow and post-fill packing is optimised. Heat deflection temperature under load, measured by ISO 75-2 method A at 1.8 MPa, is increased by dense mineral fillers; high-density PA12 grades can exhibit values between 80 °C and 180 °C depending on filler geometry, whereas unfilled PA12 typically remains below 70 °C.
Because polyamide 12 retains low permeability and good resistance to aliphatic hydrocarbons, KEBABLEND H 49.1800 High Density PA12 can be considered for moulded components that require added mass, reduced water sensitivity, and hydrocarbon tolerance. Typical application fields include angular-position sensor housings, inertial counterweights, vibration-damping carriers, and underhood clips or brackets exposed to fuel vapours. In such uses the component must be tested to the relevant OEM specification, such as ISO 1817 for chemical resistance, SAE J2260 for fuel-system hose materials, or ISO 16750 for road-vehicle environmental loads. The filled high-density grade is not automatically equivalent to extrusion-grade PA12 used in fuel tubing because filler content reduces elongation at break and increases viscosity. For electrical applications, comparative tracking index should be measured according to IEC 60112, and surface resistivity if required according to IEC 62631-3-2.
When a design replaces a zinc or brass mass with a polymeric alternative, polyamide 12 high-density grades provide injection-moulding design freedom while avoiding the corrosion or surface-treatment steps required for metal. The density remains lower than metallic alloys, so the part envelope must be enlarged or secondary inserts considered. In comparison with high-density POM grades, PA12 compounds offer lower water absorption and better resistance to alkaline environments, but they may have lower wear and creep performance under continuous load. In comparison with PA6 or PA66, PA12 provides lower saturation moisture uptake and superior dimensional stability in humid air; however, PA6 and PA66 may provide higher strength and stiffness at similar filler loadings. Selection must therefore be based on measured values: modulus from ISO 527-1/-2, impact from ISO 179-1/1eA, and creep behaviour from ISO 899-1 at the expected service temperature. Published long-term creep data for this specific configuration is limited, so prototype testing under application-specific load, temperature, and humidity is required before mass production.
On production-scale twin-screw compounding lines, batch-to-batch control of KEBABLEND H 49.1800 relies on gravimetric feeding of polyamide 12 base resin and the dense filler system. Co-rotating twin-screw extruders with L/D 40:1 to 48:1 and side stuffing at a downstream barrel are typical for high-filler compounds; the side feed location and screw profile affect filler dispersion and final mechanical properties. Variations in filler particle-size distribution can shift melt viscosity even when density remains within specification, so controlled lot-to-lot viscosity testing is recommended if hot-runner moulds are used. The material should not be processed on screws designed for unfilled PA12 without hard metal protection, and it should not be exposed to strong mineral acids, phenols, or oxidising agents at elevated temperature without application-specific chemical resistance testing.
The product is a technical thermoplastic compound and is not generally classified for food-contact, medical, or potable-water use unless explicit certification exists. Compliance under REACH, RoHS 2011/65/EU, and IMDS should be verified through the supplier’s certificate for the specific lot. Final material selection is governed by the Barlog Plastics technical data sheet, lot certificate, and application-specific OEM testing.
