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General Discussion
Chromoly vs DOM
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<blockquote data-quote="blacksheep10" data-source="post: 612189" data-attributes="member: 13"><p>A trophy truck gets the **** beat out of it every big hit for ungodly amounts of hours of service. Too much heat/too big a HAZ and it can crack. A lot of it has to do with design of how the load expected is dispersed though the chassis. Cracks are generally a repeated abuse cycles thing. </p><p>It weighs the same. You can use thinner as it is stronger and more ductile per equal cross section. </p><p>You don't have to PWHT it if you don't fry it. You are only going to HT it post weld if you use homogenous filler. Use er70 or 80. We are likely talking about 4130N. </p><p>There is a reason top tier cars use it. It works. See the super simple/minimalist bombers falling apart after several KOH and LOTS of prerunning/wheeling/other rock races? Not so much</p></blockquote><p></p>
[QUOTE="blacksheep10, post: 612189, member: 13"] A trophy truck gets the **** beat out of it every big hit for ungodly amounts of hours of service. Too much heat/too big a HAZ and it can crack. A lot of it has to do with design of how the load expected is dispersed though the chassis. Cracks are generally a repeated abuse cycles thing. It weighs the same. You can use thinner as it is stronger and more ductile per equal cross section. You don't have to PWHT it if you don't fry it. You are only going to HT it post weld if you use homogenous filler. Use er70 or 80. We are likely talking about 4130N. There is a reason top tier cars use it. It works. See the super simple/minimalist bombers falling apart after several KOH and LOTS of prerunning/wheeling/other rock races? Not so much [/QUOTE]
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