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Marlex® HXB TR-494 Polyethylene

Technical Datasheet | Supplied by Chevron Phillips Chemical

Marlex® HXB TR-494 Polyethylene by Chevron Phillips Chemical is a high density polyethylene (HDPE) hexene copolymer grade. It possesses broad molecular weight distribution and extra-high molecular weight. This grade exhibits melt strength, pipe stiffness and impact-, creep-, chemical and slow crack growth resistance. It is processed by corrugated pipe extrusion. It is used in roadway culverts, storm sewers, conduit/ducts and land drainage. Marlex® HXB TR-494 Polyethylene meets ASTM D4976-PE 235, AASHTO M 294, AASHTO M 252, ASTM D3350 and CellClass PE445640A.

Marlex® HXB TR-494 Polyethylene Properties

Mechanical Properties

Value & Unit

Test Condition

Test Method

Notched Constant Ligament Stress (NCLS)

> 24 h

(15 % of the reference yield stress of 4000 psi, Compression molded, Proc. C of ASTM D4703, Annex A1)

ASTM F2136

Elongation at Break

800 %

(At 2 in/min, Type IV bar, Compression molded specimens, Procedure C of ASTM D4703, Annex A1)

ASTM D638

Flexural Modulus

1340 MPa

(At 2% Secant, 16:1 span:depth, 0.5 in/min, Compression molded, Procedure C of ASTM D4703, Annex A1)

ASTM D790

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