medium carbon steels for boiler corrosion resistance
medium carbon steels for boiler corrosion resistance
(OP)
i am working of fire tube boiler. i need to know that SA 516 grade 60 is a medium carbon steel, what sort of characteristics it posses to work correctly under chances of corrosion???
how does normalizing increases the corrosion resistance of this material??
how does normalizing increases the corrosion resistance of this material??





RE: medium carbon steels for boiler corrosion resistance
Normalizing will not help corrosion resistance it helps to promote increased notch toughness, which is not important for boilers because of operating temperatures.
RE: medium carbon steels for boiler corrosion resistance
All of the steels are about the same when it comes to fire side issues, if you have an aggressive environment then you will need a coating or overlay of some sort.
On the cycle water side it largely comes down to water treatment. Though some alloys are better at resisting erosion in two phase flow because of small Cr levels this is not a factor in boilers themselves.
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P.E. Metallurgy, Plymouth Tube
RE: medium carbon steels for boiler corrosion resistance
RE: medium carbon steels for boiler corrosion resistance
what is optimum grain size preferred for shell of boiler?
secondly i couldn't get the micro structure of SA 516 grade 60 or 70 if anyone could help me?
RE: medium carbon steels for boiler corrosion resistance
RE: medium carbon steels for boiler corrosion resistance
i am designing Fire tube Boiler using ASME Boiler and Pressure Vessel Code section 8, by the help of formulas provided there. i am not truly understanding ligaments efficiency in the tube sheet. anyone can define it???
I need to know the structure of SA 516 grade 60/ 70 either it is pearlitic + ferritic or any other phase???
I am doing Metallurgical and Materials Engineering.
RE: medium carbon steels for boiler corrosion resistance
First, I would suggest you find help with an engineering firm that possesses an ASME S-Certificate and can design this boiler for you. There is no reason to use material other than carbon steel for a firetube boiler shell and tubing. There is no reason to spend time evaluating the microstructure of the plate material. The basis for ASME BPV I is design by rule, which means using the published allowable stress values in BPV II, Part D based on design temperature and material.
RE: medium carbon steels for boiler corrosion resistance
i want to conclude the role of micro structure into my my thesis of final year project. Thats why i had asked sir.