Forum Discussion

trailernovice's avatar
trailernovice
Explorer
Dec 01, 2020

My very own 'broken bumper' story...why didn't I listen?

First things first....I'm not posting this to antagonize the 'haters' but in hopes of bringing further light to the issue Despite the warnings all over this forum, I mounted a bike rack to the trai...
SDcampowneroper's avatar
SDcampowneroper
Explorer
Dec 02, 2020
mild steel bumpers and frames are X 45-52 tensile strength ) steel. Weld metal is minimun X 70.. the trouble is in the weld quality and full penetration of the parent metal, the temparature shock and HAZ ( heat affected zone)that causes hardening in that zone. Hard impacts in the HAZ zone can cause fracture where in other places a flex or bend. might only happen .

I have fixed a few. None were intended to carry a load

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