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Marlex® HMN TR-938 - HMN TR-938G Polyethylene (MDPE)

Kayak recreational equipment

Marlex® HMN TR-938 / HMN TR-938G medium-density polyethylene (MDPE) is an ethylene-hexene copolymer tailored for rotational molding applications requiring a wide process window, excellent impact strength, good flow, excellent ESCR and long-term durability. The grade is available in pellet form (HMN TR-938) and 35 US mesh powder (HMN TR-938G) to fit different manufacturing setups.

Leveraging decades of polyethylene manufacturing expertise, CPChem produces Marlex® MDPE resins using advanced catalyst systems and rigorous process controls. This foundation delivers consistent resin quality, predictable processing behavior and reliable part performance across rotational molding operations.

Connect with our PE product experts 

Properties 

PropertyTypical ValueTest Method
Melt Index (190°C/2.16 kg)3.0 g/10 minASTM D1238
Density0.939 g/cm3ASTM D1505
ARM Impact, 1/8″ (−40°C)70 ft·lbARM Impact
ARM Impact, 1/4″ (−40°C)175 ft·lbARM Impact
UV Rating> UV-20ASTM D2565, Cycle 1
ESCR (Cond. A, 100% Igepal, F50)> 1,000 hASTM D1693

Key Characteristics of Marlex® HMN TR-938 MDPE 

  • Wide process window 
  • Excellent impact strength 
  • Good flow 
  • Excellent ESCR 
  • Durability 

 

The property balance supports large, stress-bearing parts with reliable sintering and seam integrity, helping maintain performance in storage and field conditions.

Contact our technical service team for processing recommendations

MDPE Resin for Rotational Molding

MDPE resins are engineered to bridge the performance gap between HDPE strength and LLDPE flexibility. Marlex® HMN TR-938 / HMN TR-938G is optimized for rotational molding applications.

Rotational Molding

Non-exhaustive list of applications:

  • Industrial waste containers
  • Marine equipment
  • Industrial tanks

 

These applications benefit from the grade’s impact strength and ESCR, enabling durable, puncture-resistant parts suitable for outdoor exposure and heavy-duty service.

Contact our polyethylene specialists for processing support

Why Choose CPChem as Your MDPE Supplier

Proven Polyethylene Leadership

Leading polyethylene producer with decades of polymer science expertise

Advanced Catalyst Technologies

Advanced catalyst and process technologies for engineered MDPE performance

Rotational Molding Expertise

Dedicated technical service teams supporting rotational molding applications

Reliable Global Supply

Reliable global supply from ISO 9001–certified manufacturing facilities

Innovation and Sustainability

Commitment to innovation and sustainability, including Marlex® Anew Circular Polyethylene