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Marlex® HHM TR-418Q Datasheet

Medium Density Polyethylene

Supplied by Chevron Phillips Chemical Company LLC

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Product Description
This high performance medium density polyethylene is an ethylene-hexene copolymer that is tailored for demanding pressure pipe applications that require:
  • Good long-term hoop strength
  • UV stabilizer for good outdoor storage life
  • Outstanding resistance to slow-crack growth

This resin meets this specification:
  • ASTM D4976 - PE 225
  • NSF 3 rd party D2513 certified

Typical applications for HHM TR-418Q include:
  • Gas distribution pipe
  • Oil field and other industrial pipe

When blended with an approved yellow concentrate, this material meets or exceeds:
  • ASTM D3350, class 234373E and 234375E
  • PPI designations PE 2708 and PE 80
  • CSA approved for natural gas
General  
Material Status 
  • Commercial: Active
Availability 
  • Latin America
  • North America
 
Additive 
  • UV Stabilizer
Features 
  • Copolymer
  • Crack Resistant
  • Hexene Comonomer
  • Medium Density
  • UV Stabilized
Uses 
  • Industrial Applications
  • Natural Gas Distribution
  • Piping
Agency Ratings 
  •  1
  •  1
  •  1
  •  1
  •  1
Forms 
  • Pellets
Processing Method 
  • Pipe Extrusion
Physical
Nominal Value
Unit
Test Method
Density
g/cm³
ASTM D1505
Melt Mass-Flow Rate (MFR) (190°C/21.6 kg)
g/10 min
ASTM D1238
Mechanical
Nominal Value
Unit
Test Method
Tensile Strength 3 (Yield)
psi
ASTM D638
Tensile Elongation 3 (Break)
%
ASTM D638
Flexural Modulus - 2% Secant  4
psi
ASTM D790
Hydrostatic Design Basis
    ASTM D2837
73°F
psi
 
140°F
psi
 
Thermal
Nominal Value
Unit
Test Method
Brittleness Temperature
°F
ASTM D746A
Additional Information
Nominal Value
Unit
Test Method
Minimum Required Strength
psi
ISO 9080
PENT
hr
ASTM F1473
Rapid Crack Propagation - Full Scale Test  5 (32°F)
psi
ISO 13478
Features
Features may also be described by the following terms: Good Crack Resistance, Crack Resistant, Medium Density, Medium Specific Gravity, Hexene Comonomer.
Uses
Uses may also be described by the following terms: Piping, Pipe.
Agency Ratings
This plastic material has 7 certifications from the following agencies (the number in parentheses shows the number of certifications for that agency): ASTM (3), CSA (1), NSF (1), PPI (2).
Available Documents
Technical Datasheet (English)
Notes
1When blended with an approved yellow concentrate
2Typical properties: these are not to be construed as specifications.
3Type IV, 2,0 in/min
40,50 in/min
56" and 8" SDR 11 pipes
 
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The information presented on this datasheet was acquired by UL Prospector from the producer of the material. UL Prospector makes substantial efforts to assure the accuracy of this data. However, UL Prospector assumes no responsibility for the data values and strongly encourages that upon final material selection, data points are validated with the material supplier.