HDPE examples of stress at yield retention versus temperature C

For long-term heat ageing, property retention depends on the property and grades considered, notably the heat stabilizers used. For a heat-sensitive characteristic such as elongation at break, the values for a given polyethylene after ageing at 120°C are roughly  

The UL temperature indices of specific grades can be 50°C for electrical and mechanical properties including impact. 

Despite a high increase in rigidity UHMWPE can be used down to -269°C. 

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Figure 4.1. HDPE examples of stress at yield retention (%) versus temperature (°C)...

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