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"DOM steel is far stronger and dent resistant when compared to HREW tubing"
"DOM is known for being stronger and more dent resistant when compared to electric welded material."
What if the dent or rock slides on the seam of HREW tubing? VS Seamless DOM?I don't doubt that your steel is stronger but just thought I would ask.
Now to play the devils advocate. What if the dent or rock slides on the seam of HREW tubing? VS Seamless DOM?
When bending HREW, it is common practice to have the seam on the inside of the bend. Therefore the seam will be on the back side of any impact.
freds40 is correct and I just verified this on all of our front and rear bumpers and our rock sliders.BigMike
how about some bend tests on a longer piece of tube..... reading all this makes me wonder why we use DOM on links??
Don't forget, to compare apples to apples you need to compare the same rated steel in both HREW and DOM. It's the steel not the process.
Yup, that is the emphasis of this experiment. We do have USA DOM steel here, but I need to check on the type of steel to see if it is the same as the USA HREW I tested. I will see about testing these also in the upcoming weeks.I am going to post this over on Pirates. Wish me luck!
why is all the ass kissing with trail gear...
If you care about your truck and it's occupants, make sure the body armor is made out of high quality steel. As proven here, just because it's DOM doesn't mean it's more dent resistant than HREW.
I'm not sure that I think there's a direct comparison to hardness and dent resistance, but the crush test is spot on. I'll admit that my material knowledge isn't significant, even though I hold an engineering degree, but I think that there are far more significant factors.I'd like to see the crush test examined to include a long section of tube. If you used a piece long enough to eliminate any end constraints and loaded it at the center it would be the closest approximation of a dent.Also, some impact testing vs. controlled applied loads might be in order. I realize that it's difficult to calibrate a hammer, but you could simply drop a specified weight from a specified distance.Also, does bending have any effect on the dent resistance. How about the same tests on a bend?I think your on the right track and am only offering a few other ways to get additional results.
All I know is that you guys are teaching me a whole lotta stuff that I did NOT know before. This thread is entertaining as well as informational. Keep up the good work(battle).
Your testing of bends idea is excellent but I must come up with a way to cradle the samples without allowing any movement at the support to get consistent results. I probably don't have matching bend angles to play with (remember we currently have a limited amount of competitor's material to play with) but we could match bends for this.
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