Product Overview
This product is manufactured by LyondellBasell and belongs to the Alathon series of high-density polyethylene (HDPE) resins. This grade is a low melt index extrusion grade HDPE, featuring excellent environmental stress crack resistance, good low-temperature toughness, and balanced rigidity. The material offers long-term resistance to chemical attack, and molded products exhibit stable long-term structural durability. The raw material is suitable for mainstream processing technologies such as extrusion blow molding and extrusion.
Technical Specifications
Physical Properties
| Physical Properties | Test Value | Test Unit | Test Standard |
| Density (23 ℃) | 0.958 | g/cm³ | ASTM D1505 |
| Melt Flow Rate (190 ℃, 2.16 kg) | 0.35 | g/10min | ASTM D1238 |
| Environmental Stress Crack Resistance (ESCR) (F50, 100% Igepal) | 25 | hr | ASTM D1693B |
| Shore Hardness D | 68 | — | ASTM D2240 |
Mechanical Properties
| Mechanical Properties | Test Value | Test Unit | Test Standard |
| Tensile Strength, Yield | 30.3 | MPa | ASTM D638 |
| Tensile Strain at Break | > 600 | % | ASTM D638 |
| Flexural Modulus (1% Secant) | 1460 | MPa | ASTM D790 |
| Tensile Impact Strength | 294 | kJ/m² | ASTM D1822 |
Thermal Properties
| Thermal Properties | Test Value | Test Unit | Test Standard |
| Heat Deflection Temperature, Unannealed (0.45 MPa) | 81 | ℃ | ASTM D648 |
| Brittleness Temperature | < -76.0 | ℃ | ASTM D746 |
| Vicat Softening Point | 128 | ℃ | ASTM D1525 |
Disclaimer: The technical specifications for LyondellBasell Alathon® L5840 presented herein are derived from data issued by LyondellBasell or certified third-party testing institutions. While we have made every effort to ensure the accuracy of the information provided, we assume no liability for any consequences arising from the use of Alathon® L5840 based on these data. Given the variables involved in processing conditions, we strongly recommend conducting thorough trials of Alathon® L5840 under your specific operational environment prior to final material selection.
Logistics & Supply Standards
LyondellBasell Alathon® L5840 HDPE is supplied in standard 25kg moisture-proof woven bag packaging. The product is in solid pellet form, is not classified as a hazardous chemical, and is not subject to special transportation controls. Cooperative warehouse nodes maintain reliable safety stock. The average delivery lead time for domestic spot orders is 3–8 working days, and for export orders is 10–15 working days, with actual delivery executed in accordance with the agreed trade terms between both parties. The product complies with general ocean and land freight specifications and can be co-loaded and shipped in mixed containers with other non-hazardous thermoplastic resins, helping customers consolidate multi-category raw materials for unified dispatch and optimize overall logistics costs.
Compliance & Quality Commitment
Purchasers may request electronic or paper copies of the manufacturer’s TDS, MSDS, and COA batch quality inspection documents. This grade complies with EU REACH and RoHS regulations, meets food-contact compliance standards, and satisfies market entry requirements for terminal products across various global regions. A comprehensive traceability system is established for all raw material batches, with each batch linked to an independent production lot number. Production, quality inspection, and warehouse outbound records are fully archived, allowing corresponding documentation to be retrieved via order and lot numbers to achieve full-chain quality tracking and ensure batch performance consistency.
Sustainability & ESG
LyondellBasell Alathon® L5840 HDPE belongs to the thermoplastic polyolefin family. Trimmings, scrap, and unqualified products generated during production and processing can be reground, pelletized, and reused, offering solid foundations for circular recycling. The raw material production process is continuously optimized to effectively control pollutant emissions during manufacturing, and VOC emissions during standard thermal processing and molding remain at low levels. The product is free from regulated hazardous substances, meeting global downstream brand green supply chain audit standards. Production facilities continuously advance energy-saving and emission-reduction measures, implement classified disposal of industrial waste, and support customers’ ESG supply chain audit requirements.
Related FAQ (Frequently Asked Questions)
Q1: Does Alathon® L5840 HDPE require drying prior to processing?
A: HDPE inherently exhibits extremely low moisture absorption and can be fed directly into machines for extrusion or blow molding under regular storage conditions. When raw materials are exposed to high-humidity environments for extended periods or when product appearance requirements are extremely stringent, hot-air drying at 60–70°C for 2 hours can be applied to remove surface-adsorbed moisture and prevent surface defects.
Q2: What working conditions suit this grade’s outstanding ESCR performance, and how should it be distinguished and selected from standard HDPE grades?
A: L5840 features an exceptional ESCR index of up to 25 hours, making it ideal for container products subjected to long-term contact with detergents, oils, and surfactants. Standard HDPE grades have weaker environmental stress crack resistance and are prone to cracking upon prolonged exposure to chemical media; hollow-molded products requiring chemical resistance and long-term crack resistance should preferentially select this grade.
Q3: What processing adjustments are required due to the low melt index characteristics of L5840 in blow molding?
A: With a melt flow rate of 0.35 g/10min, it is classified as a low-fluidity HDPE with high melt strength. During processing, barrel temperatures of the extruder can be moderately increased while screw speed is reduced to balance melt conveyance and parison sag. Customers are advised to conduct trial runs based on their specific equipment parameters to determine the optimal processing window.
Q4: Can samples be provided for formulation and molding testing?
A: Sample requests are supported for preliminary evaluation. Sample specifications, delivery schedules, and freight policies can be negotiated separately. Prior to official bulk procurement, completing full-scale processing trials and end-use durability verification is highly recommended.
