7.1.1. Symbols

Directive 2014/68/EU of the European Parliament and of the Council of 15 May 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of pressure equipment (recast) Text with EEA relevance · European Union

R_(e/t), yield limit, indicates the value at the calculation temperature of: the upper flow limit for a material presenting upper and lower flow limits, the 1,0 % proof strength of austenitic steel and non-alloyed aluminium, the 0,2 % proof strength in other cases. R_(m/20) indicates the minimum value of the ultimate tensile strength at 20 °C. R_(m/t) designates the ultimate tensile strength at the calculation temperature.

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Source: EUR-Lex (Cellar) · retrieved 2026-11-02 · Text as adopted (Official Journal); later amendments are not incorporated in this text.