ASTM B148
ASTM B148
(OP)
I believe the requirement of the above standard is that iron content shall not exceed the nickel content, what i ask is, if for some reason the iron content did exceed the nickel what would the implications be for material performance in terms of corrosion resistance, for example.
Does this question make sense? Sorry humble draughstman here but may have issue with some castings recently produced.
Does this question make sense? Sorry humble draughstman here but may have issue with some castings recently produced.





RE: ASTM B148
How was it annealed? Have you looked at the microstructure?
Is the material fully non-ferromagnetic?
If you have Fe rich phases in the grain boundaries then you will have reduced corrosion resistance. However many NAB alloys have higher Fe levels and work just fine.
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Plymouth Tube
RE: ASTM B148
Iron - should be 3.5 to 4.5, actual 4.1
Nickel -m should be 4.0 to 5.0, actual 4.0
RE: ASTM B148
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Plymouth Tube
RE: ASTM B148