| HS Code | 452189 |
| Melt Flow Rate | 12 g/10 min (230°C/2.16 kg) |
| Density | 0.905 g/cm³ |
| Tensile Yield Strength | 32 MPa |
| Elongation At Yield | 10% |
| Flexural Modulus | 1300 MPa |
| Notched Izod Impact Strength 23 C | 2.5 kJ/m² |
| Heat Deflection Temperature 0 45 Mpa | 85°C |
| Vicat Softening Temperature | 153°C |
| Melting Point | 160°C |
| Rockwell Hardness | R90 |
As an accredited SABIC PP 511A factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | SABIC PP 511A is supplied in 25 kg multi-layer paper bags with protective lining for safe handling. |
| Container Loading (20′ FCL) | 20′ FCL container loading of SABIC PP 511A polypropylene resin: palletized bags, evenly distributed, secured for safe transportation. |
| Shipping | SABIC PP 511A ships as non-hazardous polypropylene granules in sealed bags or bulk containers. Protect from moisture, direct sunlight, and excessive heat during transport. Keep packaging intact to prevent contamination and minimize dust accumulation. Standard dry, ventilated freight conditions apply. |
| Storage | Store SABIC PP 511A in a clean, dry, well-ventilated area away from direct sunlight, UV radiation, and excessive heat. Keep containers tightly sealed to prevent moisture, dust, or contamination. Avoid proximity to open flames or strong oxidizers. Maintain moderate room temperature and use within the recommended shelf life for consistent processing. |
| Shelf Life | Shelf life is typically 12 months from delivery when stored in original, unopened packaging away from heat and sunlight. |
For heavy-wall polypropylene drainage and chemical effluent piping, SABIC PP 511A is processed through single-screw extruders with a 30:1 L/D ratio and barrier mixing sections to avoid unmelted spherulitic cores that cause weld-line splitting during vacuum calibration. The producer datasheet lists a nominal melt flow rate of 0.8 g/10 min at 230°C/2.16 kg per ISO 1133-1:2022, corresponding to a high-viscosity extrusion-grade homopolymer that maintains hydrostatic hoop strength in thick-wall sections. Outdoor industrial drainage formulations incorporate carbon black masterbatch at 2.0–2.5 wt% for UV weathering resistance under ISO 4892-2, calcium stearate acid scavenger at 0.05–0.20 wt%, and primary/secondary antioxidant packages at 0.10–0.30 wt% to limit oxidative degradation during extended residence times. Pipes and fittings are specified under EN 1852-1 for non-pressure underground drainage and ISO 15494 for industrial effluent service, with long-term hydrostatic strength evaluated by ASTM D2837-22 or ISO 9080:2022. Extrusion conditions require barrel zones of 200–230°C, an adapter and die at 210–240°C, melt pressure of 15–25 MPa, and melt filtration through 200–400 µm mesh packs to remove degraded gels. Vacuum sizing with water temperatures of 20–40°C and line speeds of 1–5 m/min depending on diameter from 32–315 mm freezes the outer wall while maintaining circularity. Pre-drying is not normally required below 0.1% moisture, but storage at relative humidity above 60% makes 80°C for 2 h advisable to prevent surface blisters and streak defects. Terminal products include SDR 11 and SDR 17 pipes for chemical drains, industrial effluents, ventilation, and gravity rainwater drainage. Concentrated oxidizing acids, chlorinated solvents, and high-pH alkaline streams at elevated temperatures require immersion testing per ISO 4433-1 before specification; published data for this specific grade in concentrated acidic service is limited.
Wall-thickness distribution in PP 511A thermoformed sheet is governed by sheet-extrusion thermal history and plug-assisted forming temperature, not solely by melt strength. Sheet produced on a chill-roll stack with roll temperatures of 20–40°C and melt temperatures of 230–245°C contains a quenched skin that must be re-heated to 150–165°C surface temperature before forming; if the core exceeds 170°C, sag across a 600 mm span exceeds 25 mm, producing local thinning. Food-contact sheet and trays comply with FDA 21 CFR 177.1520 and EU 10/2011, with overall migration testing per EN 1186-1. Formulation for white/opaque sheet incorporates titanium dioxide at 1.0–3.0 wt% and sorbitol-based nucleating agent at 0.05–0.15 wt% to raise crystallization temperature and shorten cycle time; non-food industrial sheet uses carbon black masterbatch at 0.5–2.0 wt% for UV screening. Downstream production uses plug-assisted molds with plug temperature 90–110°C, forming air 0.4–0.7 MPa, and mold temperature 20–40°C, followed by trim-in-place tooling. Terminal products include thin-wall trays, deli containers, reusable food pails, and microwaveable containers. Low-temperature impact is lower than PP random copolymer, so frozen-food service below −10°C is not recommended without impact modification.
Replacing propylene random copolymer with PP 511A in extrusion blow molding narrows the parison temperature window and raises die swell, requiring accumulator-head adjustments. Parison melt temperature is maintained at 200–220°C; die gap is set to compensate for 20–35% parison swell, and mold closing speed is held at 300–500 mm/s on shuttle-type machines with clamp force from 150–400 kN. Containers for hazardous substances require UN performance certification under ADR 6.1/6.2 or 49 CFR §178, and food-contact containers must meet FDA 21 CFR 177.1520 and EU 10/2011. Impact limitation: for drop impact at 0°C or below, addition of 10–20 wt% ethylene-propylene random copolymer or HDPE is common, but this shifts chemical resistance and must be validated. Stabilization uses acid scavenger at 0.02–0.05 wt% and phenolic antioxidant at 0.05–0.15 wt%. Intermittent extrusion through an accumulator head with L/D 24:1 or higher, screw speed 30–60 min⁻¹, melt temperature 200–220°C, and mold temperature 15–30°C is typical. Pre-drying at 80°C for 2–3 h is applied when surface moisture is suspected, preventing parison bubble nucleation. Terminal products include 0.5–5 L containers for detergents, industrial chemicals, lubricants, and non-carbonated liquids. Carbonated beverage service is outside the operational boundary because of CO₂ permeation and low-impact fracture risk.
High-tenacity polypropylene strapping and monofilament converting operations use PP 511A where high melt viscosity homogeneous orientation is required during water-bath quenching and hot-air drawing. After slit-die extrusion at 220–240°C through a 10–15 mm slit die, the melt is quenched in water at 20–35°C to develop a fine spherulitic morphology that is oriented at draw ratios of 6:1 to 9:1 in hot-air ovens at 110–135°C. UV-stabilized black strapping incorporates carbon black masterbatch at 1.0–2.0 wt%; white strapping uses titanium dioxide at 0.5–1.5 wt% plus hindered amine light stabilizer at 0.1–0.4 wt%. Strapping is specified under ASTM D4675-14a, with tensile properties measured per ASTM D638-14. Terminal products include strapping widths 9–19 mm and monofilament diameters 0.15–0.40 mm for industrial rope, netting, and agricultural twine.
In twin-wall polypropylene sheet and rigid profile extrusion, die wall slip caused by the high molecular weight tail of PP 511A can destabilize calibration, producing periodic thickness oscillations and internal web tearing. Profile and twin-wall lines run with barrel temperatures 200–230°C, head pressure 10–18 MPa, and choke plates adjusted to maintain melt-cushion uniformity. Vacuum calibration at −0.02 to −0.06 MPa with water spray at 15–25°C freezes the profile surface before exit; calibration void fraction exceeding 18% indicates too-rapid pull or insufficient melt homogenization. Twin-wall sheet for outdoor signage adds hindered amine light stabilizer at 0.2–0.5 wt% and titanium dioxide at 1–3 wt%; dark colors add carbon black at 0.5–1.5 wt%. Flame-retardant profiles are not recommended with this grade unless a halogen-free intumescent system at 20–30 wt% is pre-compounded, which lowers melt strength and must be evaluated for die swell stability. Industrial profiles and twin-wall sheets are evaluated for flammability per UL 94 HB or IEC 60695-11-10; electronic packaging profiles may require RoHS 2011/65/EU and REACH 1907/2006 SVHC declarations. Twin-wall sheet is produced with a two-stage vacuum calibrator, melt temperature 220–240°C, output 150–300 kg/h on a 75–90 mm grooved-feed extruder, and exit line speed 5–12 m/min. Terminal products include twin-wall fluted sheets for signage, agricultural packaging trays, returnable dunnage, and extruded furniture edge trim subjected to low impact loading.
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For injection moulding operations where short cycle times, long flow lengths and resistance to dimensional drift under load are primary requirements, SABIC PP 511A is specified as a polypropylene homopolymer. The 511A designation identifies a high-flow injection-moulding grade in SABIC’s PP series. The absence of ethylene comonomer in the polymer backbone permits a higher crystalline fraction after cooling than random copolymers of equivalent melt viscosity, which raises short-term modulus but reduces low-temperature ductility. Under ISO 1133-1:2022, the melt flow rate is nominally 25 g/10 min at 230 °C/2.16 kg. Density determined by ISO 1183-1:2019 is 0.905 g/cm³. Tensile testing under ISO 527-2/1A typically yields a modulus of 1,550 MPa, a yield stress of 34 MPa and a yield strain of 9 %. These values place SABIC PP 511A in the high-flow homopolymer segment for thin-wall disposables, closures, housewares and rigid packaging.
Material handling before moulding follows standard polypropylene practice. Drying is not normally required when the material is received in sealed, moisture-tight packaging and transferred through closed hoppers. If the moisture content exceeds 0.05 % by weight after external storage, pre-drying at 80 °C for 2 h is recommended to prevent surface silver streaking in thin sections. Barrel settings from feed throat to nozzle are commonly 200 °C, 225 °C, 240 °C and 250 °C on general-purpose screws with L/D 20:1. Mold temperature should remain between 20 °C and 50 °C. Elevated mould temperatures above 60 °C extend cooling time without a proportional gain in crystallinity for wall thicknesses below 1.5 mm, particularly in fast-cycling multi-cavity tools where heat removal is controlled by coolant temperature and line pressure.
Production-scale work on electric injection moulding machines of 120-ton clamp force indicates that wall sections below 0.4 mm require melt temperatures at the nozzle of at least 245 °C when the flow path-to-thickness ratio exceeds 150:1. With hot-runner temperatures below 230 °C, gate freeze occurs before the required packing time has elapsed. This condition is observed as sink marks on the upper surface of closures and as ovality beyond 0.3 mm across a 32-cavity tool. Conversely, when melt temperature exceeds 270 °C and total residence time passes 5 min, molecular weight degradation reduces melt viscosity consistency and can increase notched Izod variability by more than 20 %. In such high-speed moulding, screw recovery and decompression settings must be constrained. Screw speed above 150 rpm on a 25 mm screw can generate excessive shear heating in the melt, while back pressure above 1.5 MPa increases cycle time without improving colour dispersion for precoloured grades. Published data for this specific configuration is limited; therefore, process capability studies on the actual tooling should be used to define the production window.
One documented failure mode in closure production is premature gate stringing caused by decompression distances greater than 3 mm. The low melt viscosity that enables thin-wall filling also reduces melt strength at the hot tip. A decompression setting of 0.5–1.5 mm is usually sufficient to prevent drool while limiting gate-stringing tendencies. Alternative high-flow PP grades with higher molecular weight tails can reduce stringing but require higher injection pressure and clamp force. SABIC PP 511A is therefore evaluated when available clamp force is limited and the tool contains a large number of small-diameter cavities with short flow paths.
Compared with PP impact copolymers of equivalent melt flow, SABIC PP 511A shows higher short-term stiffness but lower low-temperature impact resistance. Typical Charpy notched values at 23 °C by ISO 179/1eA are approximately 3.5 kJ/m², whereas impact copolymers with a melt flow rate near 20 g/10 min can exceed 8 kJ/m² at 23 °C and retain 4–5 kJ/m² at −20 °C. Under ISO 527-2/1A, the homopolymer tensile modulus is approximately 1,550 MPa, while a random copolymer with comparable flow is typically in the 900–1,150 MPa range. The practical consequence for cap and closure applications is that SABIC PP 511A can produce parts with thinner wall sections at equivalent stiffness, but it should not be selected where impact at freezing temperatures or high transparency are primary requirements.
Heat deflection temperature under 0.45 MPa by ISO 75-2/B is approximately 95 °C, and Vicat softening temperature under ISO 306/A50 is approximately 154 °C. This permits intermittent hot-fill contact up to 95 °C only if the closure or container is not under continuous load. Sustained stress at 80 °C in a threaded cap can accelerate creep and reduce sealing force by more than 25 % after 7 days under a constant application torque above 2.0 N·m. Published creep data for this specific configuration is limited, so end-use mechanical evaluation under ISO 899-1 or equivalent stress-relaxation protocols should be performed before release.
Because SABIC PP 511A is a polypropylene homopolymer, its base resin falls under FDA 21 CFR 177.1520 as an olefin polymer. Compliance under that regulation permits use in contact with food provided the finished article meets the extraction limits appropriate to the food type and temperature. Under European food-contact legislation, the specific assessment follows Regulation (EU) No 10/2011, including an overall migration limit of 10 mg/dm² for general food contact and 60 mg/kg for infant food. Antioxidant and acid-neutraliser additives present in the commercial formulation are subject to specific migration limits. Converters should request the supplier’s Statement of Compliance because additive formulations may vary by production site. The material should not be assumed suitable for microwave reheating or for continuous contact with food above 100 °C unless migration tests covering those conditions have been completed on the final part.
| Property | Test method | Nominal value |
|---|---|---|
| Melt flow rate | ISO 1133-1:2022 | 25 g/10 min at 230 °C/2.16 kg |
| Density | ISO 1183-1:2019 | 0.905 g/cm³ |
| Tensile modulus | ISO 527-2/1A | 1,550 MPa |
| Tensile stress at yield | ISO 527-2/1A | 34 MPa |
| Tensile strain at yield | ISO 527-2/1A | 9 % |
| Charpy notched impact at 23 °C | ISO 179/1eA | 3.5 kJ/m² |
| Heat deflection temperature at 0.45 MPa | ISO 75-2/B | 95 °C |
| Vicat softening temperature A50 | ISO 306/A50 | 154 °C |
For dimensions, mould shrinkage in flow direction typically falls between 1.0 % and 1.2 %, and transverse shrinkage between 1.2 % and 1.4 %, when determined by ISO 294-4 on a 60 mm × 60 mm × 2 mm plaque. Variations across the part are amplified by packing-pressure gradients. In a multicavity cap tool with a 0.45 mm nominal wall, cavity-to-cavity mass variation of 0.03 g has been reported to produce diameter differences of 0.08 mm. Runner balancing and hot-runner valve-gate timing should therefore be validated with short-shot series before full production. Gate design is critical because the high melt flow reduces flow-front pressure, but it also shortens the gate-seal time after transfer to hold pressure.
In a multicavity cap tool, the effective packing time is limited by the gate diameter and melt solidification at the gate. For a 0.4 mm wall and a 0.8 mm gate, the gate-freeze time is typically below 1.0 s when the mould temperature is 30 °C. If packing pressure is released after gate freeze, the cavity cannot be fully compensate for volumetric shrinkage, and sink depth increases linearly with wall-thickness variation. For this reason, processing of SABIC PP 511A in deep-draw containers requires short injection times, controlled switchover position and a holding-pressure profile that decays in steps rather than a single immediate drop. When these conditions are not maintained, the observed failure mode is non-uniform sealing surface flatness in closures, which can produce leak rates above 0.02 cm³/min under 0.3 MPa internal air pressure in end-of-line testing.
SABIC PP 511A should not be combined with peroxide masterbatches unless intentionally used for controlled rheology because peroxide-induced chain scission shifts melt flow rate upward and reduces melt strength. Contamination by a previous PVC moulding run in shared hoppers, barrels or regrind systems can release hydrogen chloride at processing temperatures above 180 °C, causing corrosion of screw, check-ring and mould steel surfaces. Even 0.5 % PVC contamination can generate surface defects and acidic odour. When the grade is run after flame-retardant grades, it is advisable to purge with a dedicated polypropylene purge compound before introducing SABIC PP 511A into the machine.
When a converter replaces a low-flow polypropylene homopolymer with SABIC PP 511A, the injection pressure required to fill a given tool typically decreases by 15–25 % at the same melt temperature, but the clamp force requirement may remain high if the tool uses numerous small cavities. The higher melt flow also permits lower melt temperature and shorter cycle time in closures, but it can reduce melt strength at the gate and require tighter decompression control. Compared with high-flow random copolymers, SABIC PP 511A provides a higher tensile modulus and higher heat deflection temperature, but it carries a lower notched impact at sub-zero temperatures and is not appropriate for applications requiring glass-like clarity. These differences define the substitution envelope: thin-wall closures, caps, housewares and rigid containers benefit from the grade’s stiffness and fast cycle behaviour, whereas cold-temperature impact parts and transparent food containers are better served by impact-copolymer or random-copolymer materials.
