Division 7.1.1 Symbols

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.