I have not welded P22, but from what I read it is a low allow stainless that tends to get brittle. The welding techniques specified include a pre and post heat treat and on thicker materials a buffer layer of 316L with the final joint of 309 not sure what p22 pipe is but if it is carbon you should use a 308L filler with 100% argon purge 308L is a filler for fusing carbon steel and non carbon stainless. If it were 316 stainless you would want to use a 319 filler
P22 is a steel alloy containing 2 1/4% chromium. It is weldable with most carbon steel alloy fillers such as E-70s2, ER-7018, etc. However, to weld it to a low grade stainless steel alloy such as 304, you would need to use a bi-metal welding alloy such as E-309, or ER-309. The above answer is incorrect regarding 308L being a filler for carbon steel to stainless steel. It is in fact 309 which is used for dissimilar metal welding when one component is stainless steel. I have also had good success welding two dissimilar metals together using inconel alloy welding electrodes such as INCO-182.
UTS of 304L Stainless Steel is 586MPa UTS of 304 Stainless Steel is 621MPa
It depends on the type of stainless steel. Stainless steels come in various compositions and are identified by numbers and letters. Electrodes should be chosen that match these. For example when welding 316 stainless use type 316 electrodes. In a lot of situations you can safely use the next higher number. 304 stainless can be welded with 308 electrodes, 308 stainless with 310 electrodes. 309 electrodes are generally used to weld stainless to carbon steel.
E-308
Japanese standard for stainless steel grade 304.
Use the standard austenitic alloys (316 or CF8M) whenever the part will not be welded or can besolution annealed after welding.Use the low carbon versions (316L or CF3M) for parts that will be welded and cannot be solutionannealed after welding
The SS 304 pipes are high on strength with a minimum yield strength 205MPa and provide sustainability with basic tensile strength of 515MPa. Type 304 grade of stainless steel pipe is built in various shapes like round, square, rectangular, and more in various forms, like seamless, welded, etc. Western Steel Agency is a Top Stainless Steel Pipe Fittings Manufacturers in India.
The most common types of rods used for welding stainless steel are 308, 309, and 316. 308 rods are best for welding 304 stainless steel, while 309 rods are recommended for welding 309 stainless steel. 316 rods are suitable for welding 316 stainless steel and are also good for general-purpose welding of higher-grade stainless steels.
UTS of 304L Stainless Steel is 586MPa UTS of 304 Stainless Steel is 621MPa
Stainless Steel 304 Seamless Pipes come in various types based on their manufacturing processes and applications. Some common types include standard seamless pipes, precision seamless pipes, cold drawn seamless pipes, and high-pressure seamless pipes. Each type offers specific benefits and is suited for different industrial and commercial purposes.
Stainless steel bends are mainly manufactured using seamless or welded stainless steel pipes in various grades such as 304, 316/316L, 904L, 321, 317L, Inconel,Moneland Hastealloyalloys. Stainless steel bends are a type of pipe fittings used to join to ends of a pipe, in areas where standard size pipe fittings such as elbows, reducers and tees cannot be used.
Stainless steel bends are mainly manufactured using seamless or welded stainless steel pipes in various grades such as 304, 316/316L, 904L, 321, 317L, Inconel,Moneland Hastealloyalloys. Stainless steel bends are a type of pipe fittings used to join to ends of a pipe, in areas where standard size pipe fittings such as elbows, reducers and tees cannot be used.
It depends on the type of stainless steel. Stainless steels come in various compositions and are identified by numbers and letters. Electrodes should be chosen that match these. For example when welding 316 stainless use type 316 electrodes. In a lot of situations you can safely use the next higher number. 304 stainless can be welded with 308 electrodes, 308 stainless with 310 electrodes. 309 electrodes are generally used to weld stainless to carbon steel.
A-304
316 stainless
yes
Hey Christensen, I can't answer your question, but check out this link, it may help http://home.cogeco.ca/~mquill/stainless.html
304 is the most common stainless steel so it is very much likely to be used in commercial kitchens. It has good weldability and therefore is likely to be used for commercial and industrial kitchens. If its complex kitchen with difficult welds 304L may be used as it has increased levels of carbon to improve welding.