CI and CS Valve body 1

[GasProcess]

There is an old valve body lying in the scrap yard. Body marking indicates 125 24" WSP. It appears from "125" that it is #125 CI body. But is there any other way to confirm the body mterial as CI or CS. We do not have any material spectoscope or any thing fancy. This body can be cut if required as it is already waste.

Any ideas.

Thanks

 

[swall]

Try smashing it with a hammer. If it breaks into bits, it is cast iron. If it just gets dented, it is carbon steel.

 

[arunmrao]

Lightly strike it with a hammer on the flange edge. If you get a ringing note it is steel,if a thud,it is CI. Also CI will not get gas(oxy-acetylene) cut easily,while steel can be cut.

 

[unclesyd]

Take a small sharp chisel and get on the edge of flange and at low angle of attack try to chisel off a chip of metal. If the chip continues to break into small pieces the valve is CI. If the chip curls you have something else, steel or DI. the only problem is then you don't know which one.

 

[swall]

Unclesyd--I forgot about the ductile iron possibility.

 

[EdStainless]

You could seperate the ductile iron and cast steel by sparking it with a hand grinder. DI or CI will throw a ton of sparks, steel will only be modest. Somewhere I have a picture of grinder spark patterns. (yes, I am that old)

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[GasProcess]

Thank you all guys. I will try all and let you guys posted for results