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
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| 2% Secant Flexural Modulus | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Elongation at Break | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Hydrostatic Design Basis | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Hydrostatic Design Basis | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Minimum Required Strength | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Rapid Crack Propagation | 0.0 Visible After Login | Visible After Login | Visible After Login |
Other properties
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Tensile Strength at Yield | 0.0 Visible After Login | Visible After Login | Visible After Login |
Physical properties
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Density | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Melt Mass-Flow Rate (MFR or MFI = Melt Flow Index or MI = Melt Index) | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Melt Mass-Flow Rate (MFR or MFI = Melt Flow Index or MI = Melt Index) | 0.0 Visible After Login | Visible After Login | Visible After Login |
| PENT Slow Crack Growth | 0.0 Visible After Login | Visible After Login | Visible After Login |
Thermal properties
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Brittleness Temperature | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Melting Point | 0.0 Visible After Login | Visible After Login | Visible After Login |

