We use a 5/16" thick 110 ksi min. yield hss material formed into a rectangle and resistance welded to form a frame rail. A pair of these tubes combined with cross members makes up a chassis. We are experiencing localized fracture in the throat of the weld initiating at the weld crown. Starts ductile and goes brittle. Looking at 350 Knoop hardness in the fusion zone. Has anyone experience such a failure?
Red Flag Submitted
Thank you for helping keep Eng-Tips Forums free from inappropriate posts. The Eng-Tips staff will check this out and take appropriate action.
Reply To This Thread
Posting in the Eng-Tips forums is a member-only feature.
Cities are ceaseless engines of engineering activity. Itâ€™s likely that while you were on your way to work, you encountered a number of infrastructure development projects under construction. Download Now
When was the last time you drove down the highway without seeing a commercial truck hauling goods?The ubiquity of these machines underscores the important roll they play in modern commerce. Download Now