| HS Code | 808648 |
| Density | 0.960 g/cm³ |
| Melt Flow Rate 190 C 2 16 Kg | 0.6 g/10 min |
| Melt Flow Ratio 21 6 2 16 Kg | 28 |
| Tensile Strength At Yield | 26 MPa |
| Tensile Strength At Break | 33 MPa |
| Elongation At Break | >600% |
| Flexural Modulus | 1200 MPa |
| Vicat Softening Temperature | 126 °C |
| Heat Deflection Temperature 0 45 Mpa | 75 °C |
| Brittleness Temperature | < -70 °C |
| Environmental Stress Crack Resistance | >1000 h |
| Hardness Shore D | 66 |
| Melting Point | 130 °C |
| Water Absorption | <0.01% |
| Uv Stabilization | Yes |
As an accredited Braskem HDPE 060U factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Braskem HDPE 060U is packaged in 25 kg polyethylene bags, with 55 bags per pallet, totaling 1,375 kg. |
| Container Loading (20′ FCL) | Braskem HDPE 060U high-density polyethylene resin loaded in a 20′ FCL, palletized in bags and secured for ocean freight. |
| Shipping | Braskem HDPE 060U is shipped as a non-hazardous polyethylene resin, typically in 25 kg bags, 500–1,000 kg jumbo bags, or bulk trucks/railcars. Keep dry and clean, away from direct sunlight, heat, and moisture. Use standard PPE and avoid contamination during handling. |
| Storage | Store Braskem HDPE 060U in a cool, dry, well-ventilated warehouse away from direct sunlight, heat, ignition sources, and strong oxidizers. Keep original bags sealed, palletized, and off the floor to prevent moisture and contamination. Avoid prolonged UV exposure and extreme temperatures. Maintain clean handling practices, follow local regulations and supplier guidance, and rotate stock first-in, first-out. |
| Shelf Life | Braskem HDPE 060U has indefinite shelf life when stored in unopened original packaging, cool, dry, ventilated area away from sunlight. |
Mono-material vented agricultural crates moulded from Braskem HDPE 060U are specified for UV-exposed field logistics where stacking strength, washdown resistance, and dimensional stability must survive repeated harvest-to-packhouse cycles. The grade enters this application with a nominal melt-flow rate of 6.0 g/10 min under ASTM D1238 at 190°C/2.16 kg and a density of 0.960 g/cm³ under ASTM D792. Production-scale injection moulding for vented crates is typically run on 800–1,200 t toggle presses with 22:1 L/D general-purpose screws, reverse-shut nozzles, and sequential valve-gated hot runners. Melt temperature is held at 210–230°C and mould temperature at 10–30°C; lower mould temperatures can produce underfill at rib intersections, while higher melt temperatures accelerate consumption of the stabilizer package. The formulation addition ratio for first-generation parts is 100 wt% 060U. Where closed-loop post-industrial regrind is introduced, the addition ratio is capped at ≤30 wt%, and the regrind melt-flow rate should remain within 4–10 g/10 min to limit lot-to-lot warpage and impact scatter. Downstream production includes high-pressure injection moulding with robotically inserted metal hinge pins, automated degating of vented side walls, and flatness measurement after cooling. Terminal product types include vented harvest crates, field transfer totes, nursery transport containers, and stackable distribution trays. For direct contact with whole fruits and vegetables, the final article must be evaluated under FDA 21 CFR 177.1520 and EU 10/2011 for the specific food type, contact temperature, and extraction conditions; for non-food field logistics, REACH Regulation (EC) No 1907/2006 and RoHS Directive 2011/65/EU restrict heavy-metal and restricted phthalate content. Process failures on this article class are dominated by sink marks at post bosses and gate blush at hot-drop locations. Raising holding pressure from 40 MPa to 70 MPa hydraulic and extending pack time from 8 s to 14 s generally reduces sink depth below 0.05 mm on commercial samples, but increases energy input and clamp peak load. For regrind fractions recycled beyond 3 cycles, published data for the specific 060U stabilization concentration is limited; in-house weathering validation is required before increasing regrind content.
Closure tools built for 060U operate inside a narrow processing corridor between flash formation and short-shot at thin-walled tamper-evident features. The grade’s melt-flow rate of 6.0 g/10 min supports fill in 48–96 cavity stack moulds with valve-gated hot runners, but high shear at gate diameters of 0.5–0.8 mm can raise local melt temperature toward 240–250°C, creating odour, discoloration, and potential stabilizer degradation. Melt temperature is set at 200–240°C, mould temperature at 8–20°C, injection speed at 80–120 mm/s, and holding pressure at 60–80 MPa hydraulic. The formulation addition ratio is 97–99 wt% 060U with colour masterbatch at 1–3 wt%. Where torque reduction is specified for dispensing closures, slip additive is introduced at 0.05–0.2 wt%, but higher loadings can create stress-cracking risk at hinge bridges and threaded skirt walls. Downstream production includes high-cavitation injection moulding, automated liner insertion, vision inspection for ovality and seal-gate defects, and removal torque testing. Terminal product types include tamper-evident closures for non-carbonated beverages, dairy closures, household chemical dispensing caps, and agrochemical measuring caps. Compliance for food-contact grades is anchored to FDA 21 CFR 177.1520 for olefin polymers and EU 10/2011 Annex I overall migration limits, with the final closure validated under the intended food simulant and use condition. For dangerous goods packaging, UN ADR/RID closure compatibility testing applies. Carbonated soft-drink closures are not specified with this grade because HDPE creep and CO₂ barrier limitations require PET, PP, or multilayer liner systems; this boundary prevents misapplication in pressure-retentive beverage seals.
Garden deck boxes and planter troughs made from 060U are specified where UV stabilization is required without external additive dosing during compounding. The processing window between complete fusion and UV additive degradation is narrow: barrel set-points above 220°C accelerate consumption of the U package, while set-points below 190°C increase injection pressure and short-shot incidence in grained or high-polish cavity surfaces. Injection moulding for this article class typically uses 600–900 t hydromechanical clamps, screw L/D of 20:1–24:1, melt temperature of 190–220°C, mould temperature of 15–40°C, and holding pressure of 50–70 MPa. The formulation addition ratio is 100 wt% 060U for first-generation outdoor parts. If in-house regrind is introduced, it is commonly limited to ≤25 wt%; weathering performance must then be revalidated for the specific colour and wall thickness because recycled UV-stabilized HDPE does not retain identical stabilizer concentration. Colour concentrate is added at 1–3 wt% for dark-green, brown, or grey outdoor parts; no separate UV masterbatch is required in first-generation moulding. Downstream production involves injection moulding with grain-etched tools, robot part removal, and assembly of metal hinges, wheels, or snap-fitted end caps after cooling. Terminal product types include garden deck boxes, compost bins, planter troughs, mower seat bases, and outdoor storage chests. Weathering validation uses ISO 4892-2:2013 and ASTM D4329-13; a typical OEM acceptance gate is ΔE < 3.0 after 2,000 h xenon or QUV exposure, but 060U-specific published data for every colour formulation is limited. The table below summarizes the outdoor validation matrix used to establish batch acceptance.
| Standard | Condition/property | Typical outdoor acceptance gate |
|---|---|---|
| ISO 4892-2:2013 | Xenon-arc, daylight filter | ΔE < 3.0 after 2,000 h |
| ASTM D4329-13 | QUV-A 340 nm, 8 h UV / 4 h condensation | Gloss retention > 70% after 1,000 h |
| ASTM D2244-23 | CIELAB colour difference | No cracking or chalking in visual inspection |
In export pallet specifications, 060U enters the material selection when phytosanitary constraints, UV exposure during container yard storage, and reusability shift the specification away from wood. The main process conflict is warpage caused by differential cooling between thick beam sections and thin deck surfaces. Tools with conformal cooling and sequential valve gating are used to hold flatness within ±2 mm over a 1,200 mm span. Injection moulding is run on 2,500–3,500 t clamp units with screw L/D of 22:1–25:1, melt temperature of 200–230°C, mould temperature of 15–30°C, and fill time of 2.5–4.0 s. The formulation addition ratio is 75–100 wt% 060U with recycled HDPE regrind at ≤25 wt%; regrind melt-flow rate is controlled within 3–10 g/10 min to reduce viscosity mismatch and warpage drift. Downstream production includes high-pressure injection moulding, optional steel reinforcement inserts for racking loads, automated gate trimming, and flatness inspection after annealing or ambient conditioning. Terminal product types include export pallets, rackable dunnage platforms, freezer spacers, and slip-sheet trays. Compliance is anchored to ISO 8611-1 for pallet bending and racking strength and ASTM D1185 for pallet-related handling trials. ISPM-15 does not apply to plastic pallets, but border inspection may require a non-wood certificate. Post-consumer recyclate is not used in food-contact export pallets unless the recyclate source and decontamination process are validated under the importing jurisdiction’s food-contact framework.
Where compact-platform washer reservoirs replace stamped steel brackets, injection moulding from 060U enters the programme when the operating fluid is limited to windshield washer solution and underhood peak temperatures do not exceed published heat distortion thresholds. The grade is not specified for pressurised coolant expansion vessels or continuous fluid temperatures above 60°C; those functions require glass-reinforced polypropylene or polyamide with higher heat deflection. Injection moulding is performed on 500–800 t hydraulic presses with screw L/D of 20:1, melt temperature of 200–230°C, mould temperature of 10–35°C, and holding pressure of 60–80 MPa. If condensation occurs after cold storage, drying for 2 h at 80°C prevents splay. The formulation addition ratio is 94–100 wt% 060U, with carbon black masterbatch at 0.5–2 wt% where UV opacity is specified. Heat stabilizer addition is only introduced when the OEM thermal specification exceeds the grade’s standard stabilizer limits. Downstream production includes injection moulding with hydraulic core pulls for barb fittings, hot-plate welding or spin welding of pump brackets, and leak testing at 20–40 kPa pneumatic pressure. Terminal product types include windshield washer reservoirs, fluid-level sensor brackets, battery hold-down trays, and underhood cable troughs. Compliance is anchored to FMVSS 302 for flammability, SAE J2527 for exterior weatherability if the part is exposed, ISO 179-1 for Charpy impact, REACH Regulation (EC) No 1907/2006, and RoHS Directive 2011/65/EU. Avoid combination with strong oxidising washer concentrates that exceed the fluid compatibility validated by the OEM; the final assembly must be tested with the intended commercial fluid rather than water alone.
On 350–600 t toggle presses, appliance housing programmes with 060U require packing-profile control because the grade’s density of 0.960 g/cm³ produces mould shrinkage in the range of 1.5–2.0%. Tooling for small appliance housings is cut to this range, but the exact value shifts with wall thickness, gate position, and mould temperature. Injection moulding uses melt temperature of 200–235°C, mould temperature of 15–40°C, screw L/D of 20:1, and cooling time of 10–18 s for 2.5–3.0 mm nominal wall stock. The formulation addition ratio is 94–100 wt% 060U; colour masterbatch is added at 1–4 wt%, and antistatic masterbatch is limited to ≤0.5 wt% only where surface resistivity below 10¹¹ Ω/sq is required under IEC 61340-2-3. Downstream production includes multi-cavity hot-runner injection moulding, in-mould labelling when specified, automated deflashing of speaker grilles, and snap-fit assembly after dimensional audit. Terminal product types include floor-care appliance housings, white-goods trim panels, power-tool motor covers, and domestic appliance bases. Compliance is anchored to UL 94 HB for horizontal burn classification, IEC 60335-1 for creepage distance and ball-pressure criteria, FDA 21 CFR 177.1520 where incidental food contact occurs, and EU 10/2011 for food-contact parts. If the appliance operates above 60°C continuous service, HDPE 060U is not recommended due thermal creep and stress relaxation; glass-filled PP or ABS/PC blends should be evaluated instead.
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Braskem HDPE 060U is an injection-moulding grade of high-density polyethylene homopolymer supplied as natural-colour pellets. The grade has a nominal melt flow rate of 6.0 g/10 min at 190 °C/2.16 kg (ASTM D1238; ISO 1133-1:2022) and a nominal density of 0.960 g/cm³ at 23 °C (ASTM D1505; ISO 1183-1). These two indices place the material in the high-flow, high-stiffness segment of injection-moulding HDPE and indicate a narrow molar mass distribution that supports rapid cavity filling and low post-mould warpage. Manufacturer-published typical values include tensile yield strength of 27 MPa (ASTM D638), flexural modulus of 1,100 MPa (ASTM D790), notched Izod impact strength of 28 J/m at 23 °C (ASTM D256), Vicat softening temperature of 126 °C (ASTM D1525), and Shore D hardness of 64 (ASTM D2240). The published values are nominal lot averages, not specification minima; they should be confirmed against the current technical datasheet and first-article test data before production release.
| Property | Nominal Published Value | Reference Standard |
|---|---|---|
| Melt flow rate | 6.0 g/10 min | ASTM D1238 / ISO 1133-1:2022, 190 °C/2.16 kg |
| Density | 0.960 g/cm³ | ASTM D1505 / ISO 1183-1, 23 °C |
| Tensile yield strength | 27 MPa | ASTM D638, Type IV, 50 mm/min |
| Elongation at break | >600 % | ASTM D638, Type IV, 50 mm/min |
| Flexural modulus, 1% secant | 1,100 MPa | ASTM D790, 1.3 mm/min |
| Notched Izod impact, 23 °C | 28 J/m | ASTM D256 |
| Vicat softening temperature, 10 N | 126 °C | ASTM D1525 |
| Shore D hardness | 64 | ASTM D2240 |
Compared with lower-density HDPE copolymers, the primary differentiators are the combination of a 6.0 g/10 min melt flow rate with a 0.960 g/cm³ density. Because the grade is essentially a high-density homopolymer, the absence of significant butene or hexene comonomer produces higher crystallinity than HDPE grades with densities from 0.940 g/cm³ to 0.955 g/cm³. Moulded articles therefore exhibit higher flexural modulus and lower notched impact energy than a medium-density copolymer of similar melt flow rate. The melt flow rate also separates the material from fractional-melt HDPE grades used in extrusion blow moulding and pressure pipe, which typically range from 0.2 g/10 min to 0.5 g/10 min. Those grades have higher melt strength and higher notched Izod impact values, but they require higher injection pressures and longer cycle times in thin-wall injection tooling. Conversely, compared with very-high-flow HDPE grades above 20 g/10 min, HDPE 060U retains greater stiffness and impact resistance but is less suited to ultra-thin-wall, long-flow-length components requiring extremely low melt viscosity.
The narrow molar mass distribution reduces die swell and differential shrinkage, which improves roundness and flatness in closures and stackable containers. However, the same characteristic reduces melt strength. The material is therefore not intended for extrusion blow moulding, sheet extrusion, blown film, or rotational moulding. In such processes, the melt would exhibit excessive sag or bubble instability at normal take-up speeds. The grade is also not a direct substitute for high-molecular-weight HDPE grades in cold-temperature impact applications such as industrial totes or fuel tanks, because the notched Izod impact of 28 J/m is below the 100–300 J/m range typically observed for those high-viscosity products. This is an operational boundary rather than a product deficiency.
On general-purpose single-stage injection moulding machines with screw diameters from 35 mm to 80 mm and compression ratios of 2.5:1 to 3.0:1, a usable melt-temperature window of 190 °C to 220 °C is reported. The lower portion of the range is preferred for thin-wall closures to reduce odour generation and thermal degradation; the upper portion is used for long flow paths and thick bosses. Mould temperatures are normally held between 10 °C and 40 °C. Running below 10 °C can create condensation and surface defects in humid plants, while running above 40 °C extends cycle time without proportional property improvement. Nozzle injection pressure commonly falls between 60 MPa and 100 MPa depending on flow length and wall section. Hold pressure is required to compensate for linear mould shrinkage of approximately 1.5 % to 2.5 % (ASTM D955). Melt residence time should not exceed 5 min at the upper temperature; longer residence accelerates chain scission, yellowing, and loss of notched Izod impact. The shear rates typically encountered during injection moulding range from 10³ s⁻¹ to 10⁵ s⁻¹, and the grade behaves as a pseudoplastic melt with viscosity decreasing under shear.
Drying is not usually required when bags are stored sealed and ambient relative humidity is below 60 %. If pellet surface moisture exceeds 0.05 % by weight after open storage, a desiccant dryer set at 70 °C to 80 °C for 2 h to 4 h prevents splay, internal voids, and nozzle drool. On high-cavitation cap tooling, batch-to-batch variation in melt flow rate should be monitored by in-house ASTM D1238 testing. A deviation of 0.5 g/10 min from nominal can shift fill pressure by more than 5 MPa and alter gate freeze time. Hot-runner systems using internal valve gates should maintain gate orifice diameters of 0.8 mm to 1.2 mm for this grade to avoid premature stringing while preserving clean gate vestige. Cold-runner pin gates and tunnel gates should have a gate diameter of 0.6 mm to 1.0 mm for wall stock from 0.6 mm to 1.2 mm; smaller gates can increase shear and cause melt-flash or premature freeze-off.
For thin-walled closures, caps, housewares, toys, crates, and general-purpose containers, the grade is selected where fast cycle time, low warpage, and high top-load stiffness are primary specifications. At a nominal wall section of 0.6 mm to 1.2 mm, the melt flow rate permits complete cavity filling at lower injection pressure than a 1.0 g/10 min HDPE would require. The flexural modulus of 1,100 MPa allows down-gauging in stiff cap skirts and cylindrical sidewalls while maintaining top-load performance; however, the higher density of 0.960 g/cm³ reduces environmental stress crack resistance relative to lower-density copolymers. Consequently, closures intended for contact with aggressive surfactants, essential oils, or solvent-based products should be tested under ASTM D1693 condition A or B. Published data for this specific configuration is limited; the test should include notched and unnotched specimens aged at 50 °C in the actual packaged fluid, not only in the standard Igepal CO-630 solution.
On production-scale injection moulding lines with clamp force from 250 metric tons to 350 metric tons and hot-runner cap tooling, the narrow molar mass distribution reduces post-ejection dimensional drift in high-cavitation moulds. The practical result is fewer rejects for roundness and flatness after stacking. Because the grade solidifies quickly, pack time should be adjusted to gate freeze time rather than fixed by cavity pressure alone. For a 0.8 mm wall in a cold gate, gate freeze times commonly fall below 0.5 s. If hold pressure is removed before gate freeze, sink marks and increased shrinkage can occur. When hot-runner valve gates are used, the valve pin should close at the end of hold, not during fill, to avoid gate bloom and stringing.
| Qualification test | Standard designation | Condition or element to verify |
|---|---|---|
| Environmental stress crack resistance | ASTM D1693 | Condition A or B, 50 °C, Igepal CO-630; evaluate end-use fluid |
| Oxidative induction time | ISO 11357-6 | Isothermal at 200 °C; detects stabilizer depletion after multiple regrind passes |
| Food-contact overall migration | Regulation (EC) No 10/2011 | Simulant and contact time from final packaging classification; not generic |
| Heavy metals and SVHC screening | REACH Regulation (EC) No 1907/2006, RoHS Directive 2011/65/EU | Documentation from resin supplier or converter audit |
| Colour and thermal stability after regrind | ASTM D3418 | DSC melting peak and oxidation onset temperature |
Because the moulded surface of HDPE 060U is nonpolar, secondary decorating and assembly steps require surface treatment. Corona discharge or flame treatment to a minimum wetting tension of 38 mN/m to 42 mN/m (ASTM D2578; ISO 8296) is normally specified before solvent-based printing, pressure-sensitive label application, or adhesive bonding. Insert moulding of metal threads in closure shells should account for the differential thermal expansion between HDPE and steel; the linear mould shrinkage of 1.5 % to 2.5 % reduces post-mould hoop stress around inserts. For spin welding or hot-plate welding of HDPE 060U to itself, joint design should include a smooth melt bead and a weld depth of at least 1.0 mm; no adhesive primers are required for hot-plate welds. Ultrasonic welding is feasible only if energy directors are moulded into the part because the polymer has low high-frequency damping and the high weld amplitude required for amorphous resins is unnecessary.
For food-contact applications, the base resin can be evaluated under FDA 21 CFR 177.1520 and under Regulation (EC) No 10/2011 for food-contact plastics. A specific compliance certificate tied to the actual supply chain and lot number must be obtained from the manufacturer before food-contact use, because pigment masterbatches, processing aids, or regrind can alter migration kinetics in the polymer matrix. The grade is represented by suppliers as suitable for screening under REACH Regulation (EC) No 1907/2006 and RoHS Directive 2011/65/EU. It does not contain phthalates or bisphenol A by polymer composition, but the final article’s regulatory status is determined by all ingredients added at the converter. Medical or pharmaceutical use is not covered by a generic food-contact statement and requires a separate ISO 10993 evaluation.
Storage stability is governed by thermo-oxidative and ultraviolet degradation. Pellets should be stored in sealed containers at temperatures below 50 °C and protected from direct sunlight. If stored outdoors for extended periods, surface oxidation can deplete the stabilizer package and shift melt flow rate upward. Before processing aged material, the lot should be retested for melt flow rate and density. A melt flow rate increase greater than 10 % relative to the original certificate may indicate oxidative chain scission and should be rejected for critical dimensional applications. Regrind can be used at controlled levels; the maximum acceptable regrind fraction is application-specific and should be validated by the converter.
Compatibility testing is required before combining Braskem HDPE 060U with additive masterbatches based on amine-containing slip or antistatic chemistries. Certain organic amines accelerate thermo-oxidative degradation at processing temperatures above 220 °C, leading to embrittlement and colour shift. Halogenated flame-retardant systems are not recommended because their required dispersion conditions can exceed the optimum processing range and generate corrosive off-gases. If flame retardance is required, hydrated mineral fillers such as magnesium hydroxide or aluminium trihydrate can be compounded at loadings up to 40 % wt on corotating twin-screw extruders with L/D ratios from 28:1 to 40:1; the resulting compound will have lower melt flow and higher density and should be re-characterized before tool commissioning. These restrictions arise from the stabilizer package and the narrow molar mass distribution, not from a generic incompatibility of high-density polyethylene.
