BS EN 13906-2:2013

This standard BS EN 13906-2:2013 Cylindrical helical springs made from round wire and bar. Calculation and design is classified in these ICS categories:

• 21.160 Springs

This European Standard specifies the calculation and design of cold and hot coiled helical extension springs made from round wire and bar with values according to Table 1, loaded in the direction of the spring axis and op erating at normal ambient temperatures.

Table 1

Characteristic	Cold coiled extension spring	Hot coiled extension spring
Wire or bar diameter	d ≤ 20 mm	d ≥10 mm
Number of active coils	n ≥ 3	n ≥ 3
Spring index	4 ≤ w ≤ 20	4 ≤ w ≤ 12

NOTE In cases of substantially higher or lower working temperature, it is advisable to seek the manufacturer’s advice.