MILD STEEL to Ti or 4130 thickness conversions

admin

Am building some new suspension parts for a new drag sled. Want to know if there is any rule or credible info on what to use. If the stock material is .160 mild steel can you use .070 in Ti and .100 4130 material for example.  Then there are parts that aer not structural ????/    What I have seen successfully used on some drag sleds was .047 4130  used for handlebars when the stock milds steel was .0625.    In another case for the A-arms .060 4130 was used when the stock was .09375 mild steel.   Now this was for asphalt  and it made it all season no signs of trouble but ice drags are alot more jolting  and rough. You can catch 12" of air during the shut down  from just a 1/2" to 1" marble of ice or debris when going 120+ MPH.   Now I am in the understanding that both mild and 4130 are close for weight but the 4130 is stronger thus less material is needed. and how goes it for Ti ?????? even more or less????   Thirdly can you weld mild steel to 4130 and have NO issues to worry about structurally.   Thanks for any and all input.500 AMP AIRCO TIG LINCOLN PT185 100% DC @ 128 AMP-WTFSPEED GLASS 9002X MILLER THUNDERBOLT 225HOBBIEST TURNED WELDING JUNKIE8 2ND FIRECAT - SNOWMOBILE RACE CHASSIS FABRICATORPRIDE IS WHAT MAKES YOUR WORK SO GOOD
Reply:MS to 4130 = 1 1/4 cr and 1/2 mo  8018b2
Reply:Uhh...what's a drag sled?Lincoln Power Mig 210MP MIGLincoln Power Mig 350MP - MIG and Push-PullLincoln TIG 300-300Lincoln Hobby-Weld 110v  Thanks JLAMESCK TIG TORCH, gas diffuser, pyrex cupThermal Dynamics Cutmaster 101My brain
Reply:can't seem to get a decent picture  uploaded with the size limits.....  This is 8.90's @ 147 mph Attached Images500 AMP AIRCO TIG LINCOLN PT185 100% DC @ 128 AMP-WTFSPEED GLASS 9002X MILLER THUNDERBOLT 225HOBBIEST TURNED WELDING JUNKIE8 2ND FIRECAT - SNOWMOBILE RACE CHASSIS FABRICATORPRIDE IS WHAT MAKES YOUR WORK SO GOOD
Reply:Dude, On ice? Or on asphalt? I can't really tell from the pic. Sorry for being a dumba$$.I understand the thrill of doing it. I just don't understand not talking oneself out of the insane danger of doing it. Of courese, I have had my share of excitement. So, no need to defend the sport. I am just chiming in.Lincoln Power Mig 210MP MIGLincoln Power Mig 350MP - MIG and Push-PullLincoln TIG 300-300Lincoln Hobby-Weld 110v  Thanks JLAMESCK TIG TORCH, gas diffuser, pyrex cupThermal Dynamics Cutmaster 101My brain
Reply:No problems Joker, If you watch NHRA at the brainard nationals,Epping, or Atlanta's preseason testing you might have seen some of my fellow racers ( going much faster @ 8.1's @ 160mph).   This one is on asphalt, and we do ice and grass. Ice being the fastest because of the best traction but its only 660'.    No accidents as of yet while I've been at this, and none that I know of on asphalt. And there are 500+ hp Pro Stock sleds going into the 7 second range at over 170+++mph.  On ice we can run 130++ in 660' and normal 1.teens for 60'ers in under 5 seconds.    At radarruns.com they have many speed record sleds going 170-190++ mph even on all motor and reagular race gas no funny stuff.   The only scary time is when you let off and the chassis changes balance. It can get light in the back and wind plays a big factor on ice when you only weight 550-650 lbs for Pro Stock.500 AMP AIRCO TIG LINCOLN PT185 100% DC @ 128 AMP-WTFSPEED GLASS 9002X MILLER THUNDERBOLT 225HOBBIEST TURNED WELDING JUNKIE8 2ND FIRECAT - SNOWMOBILE RACE CHASSIS FABRICATORPRIDE IS WHAT MAKES YOUR WORK SO GOOD
Reply:Originally Posted by PLUMMERAm building some new suspension parts for a new drag sled. Want to know if there is any rule or credible info on what to use. If the stock material is .160 mild steel can you use .070 in Ti and .100 4130 material for example.  Then there are parts that aer not structural ????/    What I have seen successfully used on some drag sleds was .047 4130  used for handlebars when the stock milds steel was .0625.    In another case for the A-arms .060 4130 was used when the stock was .09375 mild steel.   Now this was for asphalt  and it made it all season no signs of trouble but ice drags are alot more jolting  and rough. You can catch 12" of air during the shut down  from just a 1/2" to 1" marble of ice or debris when going 120+ MPH.   Now I am in the understanding that both mild and 4130 are close for weight but the 4130 is stronger thus less material is needed. and how goes it for Ti ?????? even more or less????   Thirdly can you weld mild steel to 4130 and have NO issues to worry about structurally.   Thanks for any and all input.
Reply:Weld to 4130 = B-2 John
Reply:Originally Posted by weldgaultWeld to 4130 = B-2 John
Reply:1 1/4 cr, 1/2 mo for 4130 = b-2 alloy or b2L.  CR-MO Alloy. HSLA   John
Reply:Is this a good enough source for you ?? http://www.lincolnelectric.com/knowl...hrome-moly.aspHave a nice day SirPLUMMER and everyone else, always verify what you read on any message board...seems some just want to be noticed.Anything worth doing is worth doing RIGHT
Reply:Thanks  Dad..... i do always verify unless I know the credentials first hand. But alot of the help here is far better than the drama and info I see on other types of forums.  I am surprised no one has any first ahnd expirience withthe size conversions. The filler is a bit easier.  I have some parts that I might have to weld 4130 to MS until my bridgeport is up and working.   So my big questin still is If I have .120 MS can I use ..90 or less for 4130. That kind of specs. The one link to a metalurgical site with MPA,tesile and hardness specs was more difficult to navigate than I was planning. There were about 208 different Ti alloys that could be used for tubing, however I couldn't as of yet determine what truely will fit my needs. The only rule of thumb from my local metal supplier was  a 1/3rd reduction in wall thickness for MS to 4130.  I want to see something in writeing first before I shell out money for tubing I can't use.  I really want to use Ti tho since I am building a chamber to weld it in.  Trying to get more info on Ti welding to. The local snowmobiler is a subcontractor for Selfridge AFB and he repairs a bit of Ti on the vectoered thrust and nozzles of the jet fighters.  Getting  time with him is the hard part.  Thanks to all so far.  I am sure i will get more accurate info eventually than  on the street .  Thanks500 AMP AIRCO TIG LINCOLN PT185 100% DC @ 128 AMP-WTFSPEED GLASS 9002X MILLER THUNDERBOLT 225HOBBIEST TURNED WELDING JUNKIE8 2ND FIRECAT - SNOWMOBILE RACE CHASSIS FABRICATORPRIDE IS WHAT MAKES YOUR WORK SO GOOD
Reply:Where do you get most of your information (yellow Pages) Done