Choice of metal for high temperature application
Choice of metal for high temperature application
(OP)
Seek help from material expert.
Among copper, cast iron, carbon steel and stainless steel, or any other more appropriate metal, which is more appropriate for making gas burners exposed to direct firing and high temperature? The supporting reasons for the choice.
Among copper, cast iron, carbon steel and stainless steel, or any other more appropriate metal, which is more appropriate for making gas burners exposed to direct firing and high temperature? The supporting reasons for the choice.





RE: Choice of metal for high temperature application
RE: Choice of metal for high temperature application
In practice the limits are related to high temperature corrosion.
You can use Cu alloys if they are water cooled and there is zero sulfur.
Cast iron works in low temp application.
Steels will handle a slightly higher temp, but no serious corrosion.
For the next step up you move to stainless steels. 430 works well in moderate applications (better than 304), for higher temps 309 or 310 are the alloys of choice. They offer both strength and high temp oxidation resistance, and even some resistance to sulfur.
Ni alloys with ceramic coatings are the top end of the scale. They are expensive and delicate, but they will resist attack very well.
= = = = = = = = = = = = = = = = = = = =
Plymouth Tube
RE: Choice of metal for high temperature application
RE: Choice of metal for high temperature application
RE: Choice of metal for high temperature application
You could use 409 SS as an option.
If they are cast components then you might consider one of the CA type cast stainless alloys.
Though cast irons are much easier to work with. A spheroidal or ductile iron will withstand oxidation damage better. An iron with some Ni, Cr (and maybe even Mo) (usually all less than 1%) will also do better.
= = = = = = = = = = = = = = = = = = = =
Plymouth Tube
RE: Choice of metal for high temperature application
FYI 500C-600C isn't considered to be 'metallurgically hot'
Metalhead
RE: Choice of metal for high temperature application