Gail HDPE G Lex W55A004N

Gail HDPE G‑Lex W55A004N is a UV‑stabilized, high‑density polyethylene (HDPE) grade designed for monofilament extrusion and manufactured by GAIL (India) Limited. It is engineered with a very narrow molecular‑weight distribution (MWD) to deliver consistent melt behavior, stable extrusion, and predictable draw response—key requirements for producing high‑tenacity monofilament yarn.

This grade is especially designed for monofilament and raffia‑type yarns used in fishing nets, ropes, twines, and other high‑strength cording applications. In these end uses, the filament must tolerate repeated tension, abrasion, and long service life in wet‑marine or outdoor environments. The UV stabilization in W55A004N is a practical advantage where weathering resistance and outdoor exposure are part of the product’s duty cycle.

W55A004N belongs to the G‑Lex HDPE family produced via GAIL’s CX‑slurry process. It is supplied as natural‑colour pellets in 25 kg woven sacks and should be stored dry at temperatures below 50°C, away from direct sunlight.

Technical insights

• Melt Flow Index (I2, 190°C/2.16 kg): 0.45 g/10 min (typical). A medium MFI supports good processability and throughput on monofilament/raffia extrusion lines while still enabling strong drawn properties.
• Density (23°C): 0.955 g/cm³ (typical). High density generally supports stiffness and strength development in drawn structures—useful for netting and rope performance.
• Very narrow MWD (design intent). Narrow MWD helps produce more uniform filament behavior during spinning and drawing, supporting consistent diameter control and tensile build‑up.
• Tensile strength at yield: 250 kg/cm² (typical). Indicates resistance to yielding under load—relevant for yarns that see sustained tension.
• Elongation at yield: 10% (typical). Helps indicate early deformation behavior and the stiffness/stretch balance.
• Elongation at break: >600% (typical). High elongation at break supports toughness and reduces brittle‑failure risk in demanding cordage applications.
• Flexural modulus: 10,000 kg/cm² (typical). A stiffness indicator that can support dimensional stability and “body” in monofilament/raffia products.
• Shore D hardness: 63 (typical). A quick indicator of surface hardness/rigidity.
• Vicat softening point: 123°C (typical). Helps indicate thermal softening behavior relevant to service conditions and downstream handling.
• Processing guidance (typical): Barrel temperature 200–270°C as a starting range for monofilament and raffia extrusion; optimize based on die design, output, quench, and draw ratio.

Applications

Fishing‑net monofilament yarn (UV‑exposed marine/outdoor use). W55A004N is designed for high‑tenacity HDPE monofilament used in fishing nets, where consistent filament quality and weathering resistance matter. The UV‑stabilized positioning supports netting products that spend extended time outdoors and in wet environments.

Ropes, twines, and high‑strength cordage. Rope and twine manufacturers use UV‑stabilized HDPE monofilament grades when products must withstand repeated tension, handling abrasion, and outdoor storage. W55A004N is commonly searched as HDPE monofilament granules/dana for rope yarn and netting yarn.

Raffia‑type yarn and related woven/cording products. The grade is also used for raffia‑type outputs where converters want a balance of processability and mechanical performance for high‑strength woven or corded structures used outdoors.

Comparable alternatives

The closest internal comparison is G‑Lex W55A004 (non‑UV). W55A004N is the preferred option when the application needs UV stabilization for outdoor exposure or improved weathering robustness. Interchangeability should still be validated via trials because UV packages and processing behavior can affect drawability and final tenacity.

Buyers also compare W55A004N with other HDPE monofilament/raffia grades such as W52ASR009/W52ASR009N and W50A009. However, treat these as positioning comparisons, not drop‑in equivalents: even if MFI values look similar, differences in density and MWD design intent can change filament stability, draw ratio limits, and the final strength/elongation profile.

Across India, comparable HDPE monofilament/raffia grades exist, but direct equivalence to G‑Lex W55A004N is not confirmed unless matched against manufacturer TDS data and proven on your extrusion + drawing line.

Common search variants

Also searched as: Gail W55A004N HDPE, G‑Lex W55A004N monofilament grade, W55A004N raffia HDPE, UV stabilized HDPE monofilament, W55A004N 0.45 MFI.