Technical datasheet

Marlex® HHM TR-418Q Polyethylene

Supplied byChevron Phillips Chemical- Last Updated on Feb 19, 2026

Marlex® HHM TR-418Q Polyethylene by Chevron Phillips Chemical is a high performance, medium density polyethylene hexene copolymer. It is tailored for demanding pressure pipe applications. It exhibits good long-term hoop strength, UV stabilizer for outdoor storage life and outstanding resistance to slow-crack growth. It is used energy piping systems, oil field pipe and industrial pipe. Marlex® HHM TR-418Q Polyethylene by Chevron Phillips Chemical meets ASTM D4976-PE 225, NSF 3rd party D2513 certified, ASTM D3350, cell Class PE234373E and PE234375E, PPI designations PE 2708 and PE 80 and CSA approved for natural gas specifications when blended with an approved yellow concentrate.
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Marlex® HHM TR-418Q Polyethylene properties

Mechanical properties

PropertiesValue & unitTest conditionTest method
2% Secant Flexural Modulus0.0 Visible After LoginVisible After LoginVisible After Login
Elongation at Break0.0 Visible After LoginVisible After LoginVisible After Login
Hydrostatic Design Basis0.0 Visible After LoginVisible After LoginVisible After Login
Hydrostatic Design Basis0.0 Visible After LoginVisible After LoginVisible After Login
Minimum Required Strength0.0 Visible After LoginVisible After LoginVisible After Login
Rapid Crack Propagation0.0 Visible After LoginVisible After LoginVisible After Login

Other properties

PropertiesValue & unitTest conditionTest method
Tensile Strength at Yield0.0 Visible After LoginVisible After LoginVisible After Login

Physical properties

PropertiesValue & unitTest conditionTest method
Density0.0 Visible After LoginVisible After LoginVisible After Login
Melt Mass-Flow Rate (MFR or MFI = Melt Flow Index or MI = Melt Index)0.0 Visible After LoginVisible After LoginVisible After Login
Melt Mass-Flow Rate (MFR or MFI = Melt Flow Index or MI = Melt Index)0.0 Visible After LoginVisible After LoginVisible After Login
PENT Slow Crack Growth0.0 Visible After LoginVisible After LoginVisible After Login

Thermal properties

PropertiesValue & unitTest conditionTest method
Brittleness Temperature0.0 Visible After LoginVisible After LoginVisible After Login
Melting Point0.0 Visible After LoginVisible After LoginVisible After Login

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