weldability of 1045 cast steel

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I am looking for information on the welding of 1045 cast steel components.  Any information that anyone can supply would be greatly appreciated.Thanks
Reply:I've welded cast steel components for many years with 7018 with no problems. As far as classification on the stuff I welded it was anyones guess. You might try the Lincoln or Miller websites as they both have a lot of good technical information and how to's.The difference between art and craft is the quality of the workmanship. I am an artist.
Reply:http://www.efunda.com/materials/allo...le=AISI%201045Plain carbon steel,  80-182 tensile strength x 1,000 psi, (Carbon 0.43-0.50) (Manganese 0.60-0.90) (Phosphorous 0.04 max.) (Sulfur 0.05 max.)I don't know what the difference in weldability is for "cast" 1045, than any other form of 1045. If in doubt, preheat. http://metals.about.com/library/bldef-Cast-Steel.htmHere we go...http://www.sfsa.org/City of L.A. Structural; Manual & Semi-Automatic;"Surely there is a mine for silver, and a place where gold is refined. Iron is taken from the earth, and copper is smelted from ore."Job 28:1,2Lincoln, Miller, Victor & ISV BibleDanny
Reply:Depending upon the thickness and joint restraing, preheat may be a good idea. The number 1045 describes what the material is. The 10 indicates it is a plain carbon steel. The 45 indicates carbon content. AISI 1020 has lower carbon content than 1045.The slightly higher carbon content may cause underbead cracking in heavier sections. If you are repairing a component that failed, chack the area for any cracks or other discontinuities in the weld area.What is it that you are welding ?Have a nice dayhttp://www.weldingdata.com/
Reply:1045 steel should be welded with low hydrogen rod like 7018.It is a medium hard steel.AWS certified welding inspectorAWS certified welder
Reply:Originally Posted by gaustinDepending upon the thickness and joint restraing, preheat may be a good idea. The number 1045 describes what the material is. The 10 indicates it is a plain carbon steel. The 45 indicates carbon content. AISI 1020 has lower carbon content than 1045.The slightly higher carbon content may cause underbead cracking in heavier sections. If you are repairing a component that failed, chack the area for any cracks or other discontinuities in the weld area.What is it that you are welding ?
Reply:Cast or wrought 1045 posesses the same weldability. Thicknesses < 12mm = 100°C preheat, to 25mm 150°C preheat and thicker 200°C preheat. Low hydrogen a must, if you don't stick with manufacturers recommendations for E7018 care, forget their low hydrogen status. MIG is best as it is low hydrogen guaranteed.1045 is nearing 50% pearlite and the CEq can be as high as 0.65, so martensite in the HAZ is always a risk, to reduce this, slow cooling rates by using preheat.Cheers