| HS Code | 307475 |
| Polymertype | High Density Polyethylene (HDPE) |
| Density | 0.956 g/cm³ |
| Meltflowrate 190c 2 16kg | 1.8 g/10 min |
| Tensilemodulus | 1300 MPa |
| Tensilestressatyield | 28 MPa |
| Tensilestrainatbreak | >600% |
| Charpynotchedimpactstrength 23c | 10 kJ/m² |
| Charpynotchedimpactstrength Minus30c | 4 kJ/m² |
| Vicatsofteningtemperature A50 | 76 °C |
| Meltingtemperature | 131 °C |
| Crystallizationtemperature | 115 °C |
| Thermalconductivity | 0.4 W/m·K |
| Waterabsorption | <0.01% |
| Hardness Shored | 62 |
| Environmentalstresscrackingresistance | >1000 h |
As an accredited Borealis HDPE HE1878E factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Borealis HDPE HE1878E is packaged in 25 kg polyethylene bags, with 55 bags per pallet, totaling 1,375 kg per pallet. |
| Container Loading (20′ FCL) | Borealis HDPE HE1878E: 25 kg polyethylene bags, palletized, loaded into a 20-foot FCL container, approximately 20–22 metric tons per container. |
| Shipping | Borealis HDPE HE1878E is shipped as non-hazardous polyethylene pellets in 25 kg bags, big bags, octabins, or bulk trucks/containers. It is not classified as dangerous goods for road, rail, sea, or air transport. Store packages dry, clean, and protected from heat, sunlight, and contamination. |
| Storage | Store Borealis HDPE HE1878E in a cool, dry, well-ventilated warehouse at ambient temperature. Keep in original sealed bags or containers, off the ground, away from direct sunlight, heat, sparks, flames, and oxidizing agents. Protect from moisture, dust, and contamination. Stack pallets safely, avoid excessive pressure, and follow first-in, first-out rotation. Keep containers closed. No smoking or open flames. |
| Shelf Life | Typically 24 months in original unopened packaging, stored dry, cool, ventilated, away from direct sunlight and heat sources. |
Within potable water pressure piping, Borealis HDPE HE1878E is processed as a ready-to-extrude carbon-black-compounded PE80 resin. The minimum required strength classification is 8.0 MPa at 20 °C for 50 years when evaluated according to ISO 9080:2012 and ISO 12162; this establishes a design stress of 6.4 MPa under the 1.25 design coefficient referenced in EN 12201-1. Compliance for drinking water contact is anchored to EN 12201-2, ISO 4427-2, NSF/ANSI/CAN 61, and AS/NZS 4020, with pipe pressure testing covering 20 °C/100 h, 80 °C/165 h, and 80 °C/1000 h hydrostatic requirements. The formulation addition ratio is normally 100 wt% HE1878E as supplied because carbon black is already dispersed in the compound; no external black masterbatch or ultraviolet stabilizer dosing is required. Clean in-house rework is typically limited to 10 wt% of the total formulation, and higher rework fractions require hydrostatic design basis revalidation under ISO 9080 because regrind can reduce slow crack growth resistance and weaken the long-term MRS verification. Melt flow rate at 190 °C/5 kg under ISO 1133-1:2022 is typically maintained below 0.60 g/10 min, and compound density is typically in the range of 0.950–0.960 g/cm³ under ISO 1183-1 due to carbon black incorporation. Downstream conversion is performed on a single-screw extruder with grooved feed zone, L/D 30:1 to 36:1, barrier screw, and screen pack. Barrel zones are set from 180 °C to 220 °C, adapter at 200–210 °C, spiral mandrel die at 190–210 °C, and melt temperature is held between 190 °C and 220 °C to avoid thermal oxidation and carbon black agglomeration. Vacuum calibration at -0.3 bar to -0.6 bar fixes outside diameter and wall thickness. Terminal finished products are PE80 solid-wall pipes in SDR 11, SDR 13.6, and SDR 17, from DN 20 to DN 630, for buried water distribution mains and service laterals. Continuous pipe wall temperatures above 60 °C should not be used for potable water service without treated-water validation because disinfectant residuals and organic tainting thresholds can shift outside drinking water regulations.
Chemical transfer lines in industrial plants use the same carbon-black-compounded PE80 grade because high-density polyethylene retains resistance to dilute acids, caustic soda, brine, and various salt solutions at ambient and moderately elevated temperatures. Compliance is exercised through ISO 15494-1 and ISO 15494-2 for industrial polyethylene piping systems, with chemical resistance classification checked against ISO/TR 10358 and design derating applied through DVS 2205-1. The formulation addition ratio is 100 wt% HE1878E at the hopper; reprocessed material is restricted to 10 wt% unless the specific chemical exposure and hydrostatic revalidation under ISO 9080:2012 demonstrate acceptable property retention. Downstream production uses a grooved-barrel single-screw extruder with L/D 30:1 to 36:1, planar or spiral mandrel pipe die, melt filtration at 250–315 µm aperture, and vacuum tank calibration. The processing conflict in these lines is that excessively fast cooling reduces residual stress but increases crystallinity gradient across the pipe wall, which can reduce environmental stress crack resistance under ISO 16770; therefore cooling water temperature and haul-off speed are matched to pipe wall thickness rather than set uniformly. Terminal finished products include industrial effluent pipe, acid waste manifolds, chemical dosing lines, and tank overflow drainage, commonly specified as SDR 17 or SDR 13.6 in diameters from DN 25 to DN 400. For oxidizing media such as sodium hypochlorite above 12% concentration or process temperatures above 40 °C, published data for this specific compound is limited, and immersion testing according to ISO 527-2 plus notched slow crack growth testing according to ISO 16770 should be performed before specification lock.
In mining slurry transport, HE1878E is converted into heavy-wall HDPE pipe where abrasive particles and internal pressure combine to make slow crack growth resistance and field-fusion integrity critical to service life. Compliance is generally based on ISO 4427-2 for pipe dimensions and pressure rating, EN 12201-2 for material and pipe performance, and ISO 9080:2012 for hydrostatic design basis verification; many mine-site specifications additionally require ASTM D3350-21 classification as a pipe-grade HDPE. The formulation addition ratio is 100 wt% virgin compound for pressure-rated slurry service. Clean in-house regrind may be added at 5–10 wt% only when hydrostatic revalidation and notched slow crack growth testing according to ISO 13479 confirm no measurable loss in design life. Downstream production uses a grooved-feed single-screw extruder with L/D 30:1 to 36:1, high-torque drive, controlled melt temperature of 190–220 °C, and multipoint water cooling to manage wall-thickness-dependent residual stress. The main production bottleneck observed on thick-wall pipe lines is die-exit sag when melt temperature exceeds 215 °C; die centring, spider leg compensation, and haul-off speed are adjusted to keep wall thickness variation within ±1% of nominal. Terminal product types are tailings pipelines, slurry transfer pipe, dredge discharge lines, and leach pad piping, usually specified as SDR 13.6 or SDR 17 with diameters from DN 50 to DN 800. Field joining is performed by butt fusion under ISO 21307; fusion bead geometry and interfacial residual stress must be inspected because abrasive service converts weld-notch imperfections into crack initiation sites.
Drip and sprinkler mains manufactured from HE1878E use the pre-dispersed carbon black in the compound to eliminate separate UV masterbatch dosing on the extrusion line. Compliance for irrigation pipe is anchored to ISO 8779-1 and ISO 8779-2 for polyethylene irrigation pipes, while pressure-rated mains are additionally tested to EN 12201-2 or ISO 4427-2. Carbon black content in the ready-to-extrude compound is held in the conventional weather-protection range of 2.0–2.5 wt%; the formulation addition ratio is therefore 100 wt% HE1878E, with optional clean in-house regrind up to 15 wt% for non-potable irrigation mains, provided the pipe still meets specified hydrostatic strength and carbon black dispersion requirements under ISO 18553. Downstream processing is typically performed on small-diameter pipe extrusion lines with a single-screw extruder, L/D 30:1, melt temperature 190–220 °C, and high haul-off speeds; vacuum calibration controls outside diameter and wall thickness for SDR 17 and SDR 13.6. The terminal finished products are agricultural mainlines, sub-mains, sprinkler lateral headers, and dripline supply headers, generally in DN 16 to DN 110 sizes. Because irrigation systems may be drained and exposed to sunlight, the black compound provides ultraviolet resistance without additional stabilizer masterbatch, but fitting sockets must not be notched during fusion because surface notches have a direct effect on premature failure under pressure cycling.
Buried telecommunications duct produced from this compound is specified where crush resistance, low-temperature handling, and the ability to run smooth or corrugated profiles without changing resin feeder calibration are required. Compliance is exercised through IEC 61386-24 and EN 61386-24 for underground conduit systems, with North American projects often referencing ASTM F2160 for solid-wall HDPE conduit. The formulation addition ratio is 100 wt% HE1878E as supplied; because the compound already contains carbon black, no additional black masterbatch is required. If a silicone or slip additive masterbatch is introduced at 1–2 wt% to reduce inner wall coefficient of friction for fibre blowing, extrusion validation must include tensile elongation and butt fusion testing because such additives can localise at weld interfaces. Downstream production uses a single-screw extruder with L/D 24:1 to 30:1, melt temperature 190–220 °C, and either vacuum tank sizing for smooth duct or corrugator tooling for ribbed duct. Terminal product types include smooth HDPE cable duct, corrugated protective duct, microduct bundles, and sub-duct separators, typically in outside diameter ranges from 20 mm to 160 mm. The operational boundary is that this pipe grade is not automatically suitable for direct-burial high-voltage power cables unless the system designer confirms thermal capability, because maximum continuous conductor temperature and soil thermal conductivity must be evaluated against the specific cable rating.
Trenchless rehabilitation converts HE1878E into PE80 liner pipe that is welded above-ground and inserted into failing host mains, shifting the specification priority from extrusion dimensional control to weld integrity and long-term oxidation resistance. Compliance is aligned to ISO 11298-1 and ISO 11298-2 for renovation of underground water supply networks using continuous pipe, with material classification under ISO 9080:2012 and ISO 12162. The formulation addition ratio is held at 100 wt% virgin HE1878E for pressure-class close-fit liners; clean in-house reprocessed material is generally excluded from the core pipe layer because the combination of insertion tensile stress and long-term internal pressure creates a slow crack growth demand that few rework-containing formulations can meet without revalidation by ISO 13479. Downstream production starts with solid-wall pipe extrusion through a grooved-feed single-screw extruder with L/D 30:1 to 36:1, melt temperature 190–220 °C, and precise roundness control; pipe coils are then butt-fused according to ISO 21307, and the continuous liner is pulled through the host pipe using tracked or hydraulic winching systems. Terminal product types are close-fit PE80 liners, slip-lining pipe inserts, and pressure pipe rehabilitation sleeves, often specified as SDR 17 or SDR 26 with diameters from DN 100 to DN 500. The critical operational limitation is that pulling force must not exceed the tensile strength of the fused joint at field temperature, and any pipe stored at relative humidity above 60% should be wiped dry before welding to avoid steam contamination at the fusion interface.
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Borealis HDPE HE1878E is a bimodal high-density polyethylene produced by the Borstar cascade reactor process and intended for extrusion blow moulding of rigid industrial and consumer packaging. The nominal density is 954 kg/m³ measured in accordance with ISO 1183-1, and the melt flow rate is 0.8 g/10 min at 190 °C under a 2.16 kg load according to ISO 1133-1. These values locate the grade in the high-molecular-weight HDPE segment where stiffness, creep resistance, and environmental stress crack resistance are required simultaneously. Documented production applications include jerry cans, detergent and agrochemical containers, industrial pails, and technical packaging produced on shuttle, accumulator, or continuous blow moulding lines with clamp force capacities typically above 800 kN. The bimodal molecular weight distribution contains a high-molecular-weight fraction that contributes melt strength and slow crack growth resistance, together with a low-molecular-weight fraction that lowers shear viscosity during plasticising and die flow. That reactor-level design is intended to reduce parison sag and improve wall thickness uniformity in multi-cavity operations compared with conventional unimodal HDPE of equivalent density.
In single-station accumulator equipment with barrel diameters of 60–90 mm, the grade is normally processed at barrel temperature settings between 170 °C and 210 °C and a die head temperature of 190–210 °C. Melt pressure at the die should remain below 40 MPa because higher pressure intensifies shear heating and can reduce melt strength at the die exit. When surface roughness appears as radial ridges on the parison, the die gap is increased by 10–20% or screw speed is reduced by 10–15% before temperature adjustments are evaluated. Die swell is more predictable than that of broad-molecular-weight HDPE, but the die gap is nevertheless set 20–30% larger than the target wall thickness to compensate for swell and draw-down. Sealed packaging does not require predrying; if pellet surface condensation occurs, a drying step at 80 °C for 2 h is applied. Clean regrind can be introduced at up to 30 wt% provided melt temperature remains below 220 °C and the regrind is free of incompatible barrier layers. Extruders with L/D ratios of 24:1 to 30:1 and barrier screws are typical for homogeneous melt delivery to the accumulator head.
Process defects observed on production-scale lines are usually linked to excessive melt temperature or insufficient parison control rather than to batch-to-batch variation in the grade. A rapid drop in parison length with unchanged screw speed indicates excessive shear heating; the correction is to reduce backpressure or open the die gap. Pinch-off weld cracking at the handle is more commonly associated with contamination by polypropylene closures, paper labels, or incompatible barrier scrap than with the base polyethylene. Intermittent wall thickness variation at the top and bottom of a 20 L container has been addressed by increasing die head temperature to 205 °C and reducing drop speed, which suppresses draw-down of the high-molecular-weight fraction. These operational boundaries are important because the same molecular weight distribution that improves stress crack resistance also produces a slightly stronger temperature dependence of parison sag than a lower-molecular-weight HDPE.
Conventional unimodal chromium or Ziegler HDPE grades of equivalent density do not simultaneously deliver high melt strength and low die head pressure. Under capillary rheometry conforming to ISO 11443 at 190 °C, a unimodal resin of the same density commonly displays a lower shear-thinning index and lower extensional viscosity at the die exit. The bimodal distribution in HE1878E permits the high-molecular-weight fraction to dominate extensional flow during parison formation while the low-molecular-weight fraction lubricates shear flow. This structural separation allows the melt to hang longer without local thinning, which is especially relevant for containers above 10 L where parison mass creates high sag stress. The improved tie-molecule density in the amorphous phase also changes failure behaviour at the pinch-off weld: slow crack growth is retarded because the high-molecular-weight chains maintain interlamellar connections after rapid cooling.
Table 1 compares producer typical datasheet values with published ranges for unimodal chromium-catalysed HDPE of similar density. The unimodal band is not a single commercial specification; it represents a selection range reported in polymer property databases for blow moulding grades with comparable density.
| Property | Test method | HE1878E typical value | Unimodal reference band |
|---|---|---|---|
| Density | ISO 1183-1 | 954 kg/m³ | 953–956 kg/m³ |
| Melt flow rate | ISO 1133-1 | 0.8 g/10 min | 0.3–0.7 g/10 min |
| Flexural modulus | ISO 178 | 1050 MPa | 950–1100 MPa |
| Tensile stress at yield | ISO 527-2 | 26 MPa | 24–27 MPa |
| Charpy notched impact strength at 23 °C | ISO 179-1/1eA | 23 kJ/m² | 15–20 kJ/m² |
| Environmental stress crack resistance F50, 10% Igepal, 50 °C | ASTM D1693 | >1000 h | 50–300 h |
In detergent and agrochemical packaging, failure is typically initiated at the pinch-off weld or at a sharp stress concentration in the bottom chime. The governing test is ASTM D1693, in which notched strips are bent into a constant-strain jig and immersed in a surfactant solution at 50 °C. The F50 value reports the time for 50% of the specimens to fail. For HE1878E, the producer’s typical datasheet lists F50 values above 1000 h under 10% Igepal, meaning slow crack propagation is substantially delayed relative to conventional unimodal grades of similar density. This behaviour supports long contact with nonylphenol ethoxylate-based detergents, aliphatic hydrocarbons, weak acids, and alkalis. However, the grade is not a universal chemical barrier. Aromatic hydrocarbons, chlorinated solvents, and strongly oxidising acids attack the amorphous polyethylene phase at rates that depend on temperature and externally applied stress. At continuous service temperatures above 60 °C, internal pressure and aggressive fillings must be reviewed together because creep rupture and chemical attack become coupled failure modes.
Published data for specific chemical resistance of HE1878E in every aggressive filling is limited; therefore container trials conducted under ISO 175 immersion protocols are recommended before commercial specification. The test should reproduce both the filling concentration and the moulded-in stress state, because moulded-in residual stress governs crack initiation more than the base resin alone. For bleach and hydrogen peroxide packages, stress cracking resistance must be evaluated with the actual closure and neck finish because seal stress can exceed the tensile stress at yield in hot-fill operations.
Regulatory assessment follows the general polyolefin framework. Under Regulation (EC) No 1907/2006, the polymer substance itself is exempt from registration under Article 2(9), while monomers and additives are registered by the upstream supply chain. Food-contact suitability must be confirmed for the final article under the applicable framework, commonly 21 CFR 177.1520 or Regulation (EU) 10/2011, and the current producer compliance statement should be requested for the specific package configuration and contact conditions. The grade is normally supplied as a natural or coloured compound base; outdoor UV exposure requires a carbon black masterbatch loading of 2.0–2.5 wt% or an appropriate hindered-amine light stabilizer package. The 954 kg/m³ density provides low water vapour transmission but does not provide sufficient oxygen barrier for oxygen-sensitive fluids. Such packages are produced in multilayer structures with polyamide or EVOH barrier layers, and the HDPE skin layers are processed on coextrusion blow moulding lines designed for standard polyolefin tie resins.
Downgauging calculations using the flexural modulus in Table 1 permit wall thickness reduction of approximately 5–10% relative to a lower-modulus HDPE at equivalent top-load performance, provided the ESCR margin is retained. The relevant failure criterion is not yield stress alone but the combined effect of lower wall thickness on pin-hole defect density and permeation rate. Injection moulded polypropylene closures and metallocene-catalysed liner gaskets are commonly used with this container material without plasticiser migration issues, although closure compatibility with the filled product rather than with the HDPE substrate usually controls shelf life.
