Lanzhou Petrochemical 5000S is a premium injection-grade HDPE resin. Featuring excellent elongation, high mechanical strength, and stable processability, it is ideal for manufacturing durable plastic household products, crates, and containers.
| Manufacturer | Lanzhou Petrochemical |
|---|---|
| Density | 0.949-0.953 g/cm³ |
| MFR | 0.8-1.2 g/10min |
| Elongation at Break | ≥ 500 % |
| Tensile Strength at Yield | ≥ 23 MPa |
Note: See the product description for additional technical specifications
Lanzhou Petrochemical 5000S is a general-purpose high-density polyethylene (HDPE) resin produced by PetroChina Lanzhou Petrochemical Company. As a long-established manufacturer with deep technical expertise in the domestic petrochemical industry, Lanzhou Petrochemical possesses stable production capacity and a mature quality control system in the field of polyolefin materials, with its products widely utilized in domestic and surrounding export markets.
In terms of material classification, 5000S is a high-density polyethylene (HDPE) resin with a density range of 0.949–0.953 g/cm³, categorizing it as a typical medium-to-high-density grade product. In terms of appearance, the product is supplied in milky white, opaque pellets (granules) that are uniform and possess good cleanliness, facilitating direct input into downstream injection molding, blow molding, or extrusion equipment.
With a moderate melt flow index (0.8–1.2 g/10min) and excellent mechanical properties, 5000S demonstrates good processability in fields such as injection molded products, making it a common choice for many plastics processors when selecting general-purpose HDPE raw materials.
| Physical Properties | Typical Value | Unit | Test Standard |
| Melt Flow Index | 0.8–1.2 | g/10min | GB 3682-89 |
| Density | 0.949–0.953 | g/cm³ | GB 1033-86 |
| Ash Content | ≤0.02 | % | GB 9345 |
| Cleanliness (Impurities) | 21–40 | counts/kg | — |
| Cleanliness (Colored particles) | 6–10 | counts/kg | — |
| Mechanical Properties | Typical Value | Unit | Test Standard |
| Tensile Strain at Break | ≥500 | % | GB 1040 |
| Tensile Strength at Yield | ≥23 | MPa | GB 1040 |
The technical data sheet (TDS) of 5000S material from Lanzhou Petrochemical Corporation. In case of discrepancies, please refer to the official website of Lanzhou Petrochemical.
Excellent Elongation at Break: With a tensile strain at break of ≥500%, the material exhibits outstanding toughness, ensuring that products are less prone to brittle fracture under stress-induced deformation, making it suitable for applications requiring a degree of flexibility.
Good Mechanical Strength: A tensile yield strength of ≥23 MPa meets the strength requirements for most low-to-medium load-bearing structural components and container products.
Low Ash Content: An ash content of ≤0.02% indicates high resin purity and fewer residual impurities during processing, which helps ensure consistency in both the appearance and performance of the finished products.
Stable Processing Performance: The melt flow index falls within the moderate range of 0.8–1.2 g/10min, balancing flowability with product strength and adapting to processing windows for various molding techniques.
Superior Cleanliness Control: Both impurity and colored particle counts are maintained at low levels, helping to reduce surface defects and improve the yield rate of finished products.
Leveraging the performance characteristics mentioned above, Lanzhou Petrochemical 5000S HDPE can be widely applied in the following areas:
Injection Molded Products: As a typical injection molding grade material, it is suitable for processing various household plastic products, crates, toolboxes, and certain structural components for home appliances, balancing both appearance and structural strength.
Hollow Containers: Can be used for blow-molded bottles and barrels, such as industrial chemical packaging drums and daily chemical product bottles, meeting essential drop-resistance and pressure-bearing requirements.
General Extrusion Applications: Suitable for some conventional extrusion molding processes to meet basic performance needs for general industrial and consumer plastic products.
Note: Before specific application, it is recommended to conduct small-scale trials combined with the actual process requirements of the downstream product (such as processing temperature, mold design, and wall thickness) to ensure that material performance is fully matched to the application scenario.
Q1: Does Lanzhou Petrochemical 5000S HDPE require drying before use?
A: HDPE is a non-hygroscopic (or weakly hygroscopic) resin and generally does not require forced drying like engineering plastics such as PA or PC. However, if the raw material is stored in a humid environment or surface condensation exists, low-temperature drying at approximately 80℃ for 1–2 hours is recommended before processing to prevent defects like bubbles or silver streaks on the product surface.
Q2: How does 5000S differ in performance from PP (polypropylene) and LDPE?
A: Compared to LDPE, 5000S, as a medium-to-high-density HDPE product, has higher crystallinity, resulting in better rigidity and tensile strength, though its flexibility is slightly lower than that of LDPE. Compared to PP, HDPE generally features better low-temperature impact resistance, but its heat resistance and rigidity are slightly inferior to those of PP. Final selection should still be determined based on factors such as service temperature, loading method, and appearance requirements of the product.
Q3: Does this product possess environmental compliance certifications such as RoHS and REACH?
A: As a major petrochemical enterprise, Lanzhou Petrochemical’s HDPE products generally comply with relevant national standards (such as the GB series) during the production process. However, specific certifications like RoHS and REACH usually require obtaining the corresponding test reports or compliance documents from the manufacturer or authorized distributors based on the specific market and batch requirements of the downstream client. It is recommended to confirm the latest certification status through official channels prior to procurement.
Q4: Can this grade be used for food-contact packaging?
A: Whether it can be used for food contact depends on whether the product possesses food-grade certification (such as the Chinese GB 4806 series standards or relevant international food-contact material certifications). General-purpose 5000S is primarily aimed at the industrial and daily-use plastics market. If food-contact applications are involved, it is recommended to confirm with the manufacturer whether that specific batch possesses the corresponding food-grade certification.
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