SABIC HDPE Grade Codes Decoded: B5429, FJ00952, M80064 and P6006AD

High-density polyethylene (HDPE) is a semi-crystalline thermoplastic produced by low-pressure coordination polymerisation with Ziegler-Natta or chromium oxide catalysts. The density range is 0.941 to 0.967 g/cm³ as measured by ISO 1183-1:2019. The SABIC HDPE grade slate is organised by processing family and property envelope. The designations B5429, FJ00952, M80064 and P6006AD identify extrusion blow moulding, blown film, injection moulding, and pressure pipe extrusion grades. These alphanumeric codes do not convert arithmetically into melt flow rate or density; the leading letter denotes the primary process family, while the numeric sequence is an internal product identifier. Grade validation against ISO 1133-1:2022, ASTM D638-14, ASTM D1693-15, and ISO 9080:2022 remains mandatory for material substitution and first-run production trials.

The following table compiles representative technical datasheet values. These values are not end-use guarantees and must be confirmed against the current SABIC technical bulletin before tooling or process lock-in.

The prefix assignment is process-driven: B denotes blow moulding, F denotes film, M denotes injection moulding, and P denotes pipe. The numeric sequences do not correlate directly with melt index or density. Selecting a grade by prefix alone without comparing the specific viscosity curve, density, and additive package can produce tooling failure, output loss, and non-compliant parts.

What Distinguishes a Blow Moulding Grade from a Film Grade?

Molecular architecture controls the difference between B5429 and FJ00952. B5429 is a broad molecular weight distribution blow moulding resin with a conditional high-load melt flow rate of 29 g/10 min at 190°C/21.6 kg. FJ00952 is a high molecular weight film resin with a low-load melt flow rate of 0.05 g/10 min at 190°C/2.16 kg. These values are not directly comparable because the applied load differs. Shear viscosity curves from capillary rheometry or parallel-plate rotational rheometry are the only valid basis for comparative flow analysis. The melt flow ratio between high-load and low-load values is used to infer polydispersity; a high ratio indicates broad molecular weight distribution and pronounced shear thinning.

In extrusion blow moulding of B5429, the melt temperature is maintained between 190°C and 230°C. Accumulator-head machines with single-screw extruders of 24:1 to 30:1 L/D are typical. Die gaps of 1.0 to 2.5 mm are employed. Parison die swell is commonly observed in the range of 15–35% depending on land length, melt pump setting, and shot size. Production-scale failures occur when the melt temperature exceeds 230°C for prolonged residence time; this increases parison sag, reduces parison hang time, and generates wall-thickness variation in large containers. The high-load melt flow rate does not predict parison hang time directly because extensional viscosity and melt elasticity dominate parison deformation. Extensional rheometry data for this specific configuration is limited; line trials are required for tooling acceptance.

Environmental stress crack resistance is the controlling property for B5429 in industrial container applications. The resistance is tested by ASTM D1693-15 in 100% Igepal CO-630 at 50°C. Manufacturer technical bulletins list representative ESCR values above 600 h for B5429 under standard conditions. Actual values depend on specimen thickness, moulded-in stress, and batch-to-batch molecular weight variation. FJ00952 is not selected primarily for ESCR; it is selected for bubble stability, film toughness, and film gauge uniformity. The density of 0.952 g/cm³ is lower than that of the injection moulding grade M80064, which contributes to higher stress crack resistance and impact toughness.

When FJ00952 Is Processed Below the Critical Melt Fracture Window

In blown film lines running FJ00952, the high molecular weight of the grade produces a low critical shear rate for melt fracture. Processing at excessive screw speed or through a narrow die gap initiates sharkskin and gross melt fracture at the die lip. Equipment settings typically use die gaps of 1.0–1.6 mm, blow-up ratios of 3:1 to 5:1, and frost line heights of 6 to 10 die diameters. Internal bubble cooling is used to raise output without exceeding the critical shear stress at the die lip. Melt temperature should be controlled between 200°C and 240°C; extended time above 240°C promotes gel formation and odour generation in the film.

Bubble stability is affected by chilled air temperature and frost line position. A frost line height below 6 die diameters can reduce tear strength and increase blocking; a blow-up ratio above 5:1 can increase transverse direction orientation but reduce dart drop impact. The grade’s high molecular weight and broad molecular weight distribution are necessary for high-stalk bubble stability, but they increase screw backpressure and may reduce output compared with lower-viscosity film grades. Pre-drying is not routine for HDPE film, but if storage relative humidity exceeds 60%, surface moisture can introduce micro-bubbles and odour. Drying for 2–4 h at 80°C is then applied.

For thin-wall injection moulding of HDPE caps and closures, M80064 is processed on reciprocating-screw machines with clamp force determined by projected area and cavity viscosity. The grade’s melt flow rate of 8.0 g/10 min at 190°C/2.16 kg classifies it as a high-flow injection moulding material. Melt temperatures of 230–260°C are used; mould temperatures are maintained at 10–30°C for rapid solidification. Injection pressure in the range 80–120 MPa is typical for thin-wall parts with flow-length-to-wall-thickness ratios above 200:1. The high flow reduces filling pressure but can increase sink mark tendency in thick sections because of insufficient holding time.

Shrinkage anisotropy is a critical processing parameter for M80064. Mould shrinkage in the flow direction is lower than in the transverse direction; values derived from ISO 294-4 specimens are commonly in the range 1.2–1.8% for HDPE, with the exact value depending on mould temperature, holding pressure, and gate geometry. Warpage occurs when gate placement creates unequal molecular orientation. Hot runner systems with valve gates should be validated by short-shot studies. The density of 0.964 g/cm³ gives a representative flexural modulus near 1250 MPa under ISO 178:2019, which supports thin-wall dimensioning. Published datasheet values should be consulted for lot-specific mechanical data.

Limitations of M80064 include reduced environmental stress crack resistance relative to blow moulding or pipe grades. Closures and containers exposed to detergents, alcohols, or aggressive wetting agents require ESCR testing under ASTM D1693-15 or ISO 22088-3. The grade cannot be treated as a direct substitute for B5429 in applications requiring high ESCR, even though both are high-density polyethylene. Molten material should not be combined with polypropylene contamination; the immiscible phases produce delamination and embrittlement at weld lines.

Pressure pipe extrusion with P6006AD shifts the design criterion from short-term flow to long-term hydrostatic strength. The grade is a bimodal high-density polyethylene black compound classified as PE100 under ISO 12162. The PE100 classification requires a lower-confidence limit of hydrostatic strength of 10 MPa at 20°C for 50 years as tested to ISO 9080:2022. The density of 0.959 g/cm³ includes carbon black, which raises the compound density above the unpigmented polymer density. The melt flow rate of 0.23 g/10 min at 190°C/5.0 kg supports long-term creep resistance but demands high-torque extrusion equipment.

In pipe extrusion, grooved-feed extruders with L/D ratios of 30:1 to 37:1 are used. Melt temperature is controlled between 190°C and 230°C. Pipe dies are configured for standard dimension ratios of SDR 11 or SDR 17. Cooling water at 15–20°C is applied through vacuum calibrators. Output limits are often set by melt pressure at the breaker plate; pressures above 350 bar may require screen pack adjustment or screw speed reduction. Carbon black dispersion is assessed by ISO 18553; a dispersion rating of ≤3 is typically specified to avoid localised thermal degradation during welding.

Long-term failure resistance for P6006AD is quantified by slow crack growth and notch pipe tests under ISO 13479. The oxidative induction time is measured by ISO 11357-6; pipe formulation values above 20 min at 200°C are commonly specified for oxygen resistance. Welding is conducted by butt fusion or electrofusion according to ISO 21307. Continuous exposure to strong oxidising acids, aromatic hydrocarbons, or chlorinated solvents at elevated temperature can accelerate environmental stress cracking and reduce design life. Batch-to-batch variation in carbon black dispersion is monitored by ISO 18553; failure to maintain the specified dispersion limit can produce localised thermal degradation during welding and reduce slow crack growth resistance.