PE80 and PE100 difference
The designations PE80 and PE100 are based on the long-term strength of the respective materials, known as the minimum required strength (MRS) in accordance with ISO 12162.
The designations are:
Material Designation Minimum Required Strength (MRS)MPa
PE100 10.0
PE80 8.0
Minimum Required Strength (MRS)
The MRS is determined by performing regression analysis in accordance with ISO 9080 on the test data from the results of long-term pressure testing. The regression analysis allows for the prediction of the minimum strength for a specific service lifetime. The data is extrapolated to predict the minimum strength at 20°C and at the specified 50 year design lifetime. Full details of the analysis can be found in ISO 9080 .
PE80 be HDPE (High Density Polyethylene). PE80 pipes are often rated SDR11 PN12 and have a minimum required strength (MRS) of 8.0MPa (Megapascal).
PE100 offers additional long term strength and performance over PE80 while allowing for thinner pipe walls for the same operating pressure. PE100 uses less polymer and provides for a larger bore and increased flow capacity. PE100 pipes are often rated SDR11 PN16 and have a MRS of 10.0MPa, and typically manufactured from HDPE or HPPE (High Performance Polyethylene).
References
ISO 9080:2003 Plastics piping and ducting systems – determination of long term hydrostatic strength of thermoplastics materials in pipe form by extrapolation.
EN ISO 12162:2009 Thermoplastics materials for pipes and fittings for pressure applications – Classification and designation – overall Service (Design) coefficient.
