Cheap steel might fail due to very bad welding, but other than that it is likely to have an infinite fatigue life in bicycle service, thanks to the low stress implied by heavy tubing guages. There is no loading below which aluminium has an infinite fatigue life.
Cheap steel might fail due to very bad welding, but other than that it is likely to have an infinite fatigue life in bicycle service, thanks to the low stress implied by heavy tubing guages. There is no loading below which aluminium has an infinite fatigue life.