Watch your arc strikes dont speed cool use e70s2 tig welding rod er80sd2 works well also pay attention to good fit ups weld a little slower.
Tig welding rod for 4130 steel.
The filler metal recommended for welding 4140 steel is er80s d2.
The following article discusses some of the recommended procedures and equipment for successfully tig welding 4130 chrome moly steel.
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4130 chrome moly can be welded with the tig or mig process.
Sae 4130 aisi 4130.
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Preheat is generally not needed for thinner sections 0 120 in but for tubing larger than 0 120 a 300f 400f preheat is needed to obtain acceptable results.
There are just additional considerations to keep in mind.
Welding 4130 is not that much different than welding steel or stainless steel as far as technique is concerned.
Can i weld 4130 using the tig process.
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Er5356 aluminum magnesium tig welding rod 1lb.
There are others like 316l and if you know what you are welding its best to use a match.
On light chrome moly tubing mild steel electrodes are commonly used.
Er 4340 mild steel tig welding rod 1lb.
What consumable can be used to weld on sae 4130 steel tubing.
Yes 4130 chrome moly has been tig welded in the aerospace and aircraft industries for years.
Do i need to pre heat.
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On multiple pass welds cro mo alloy electrodes are usually specified.
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With the elevated carbon content even low levels of hydrogen can wreck havoc.
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Sae4130 is a low alloy copper coated wire designed for the welding of heat treatable low alloy steels such as the sae aisi 4100 or 8630 series as well as steel castings with similar hardening characteristics.
There is enough pickup of alloy from the base material to give the required tensile strength in the as welded condition.
Low hydrogen electrodes minimize the amount of diffusible hydrogen in the weld.
As with all welding proper procedures and techniques must be followed.