Finally broke my aluminum crampons this year, stepping down onto a rock. The connecting bar broke cleanly on either side of an adjustment hole. The field fix was easy. Just tied em together with some string. They were about 5-6 years old and I doubt they had much more than 30 to 40 4 or 5 mile trips on them, mostly on crusty snow. Got them welded at the shop our company uses and they broke again next time out, very near to the weld which made me think the heat of the weld somehow weakened the Al. Meanwhile Camp had sent me steel connecting bars, saying thats what they recommend in conjunction with the lightweight boots I normally use (Asolo Stynger). They thought it was the flexing that broke the bar. This agrees with my recollection of stepping down onto what I thought was a flat rock and stumbling just a bit. When I got them I thought I would be busting the teeth off but over the years I have been rougher and rougher on them and I have had no other problems. I kinda doubt you could bend them - they just snap.