low temperature magnetic material
low temperature magnetic material
(OP)
I need a magnetic material that is pressure vessel grade suitable down to -40C and complies with the PED requirements particularly for ductility "its bending rupture energy measured on an ISO V test-piece is no less than 27 J" at -40C.
There are some boiler plate grades that are OK but this is for a valve so I need a bar grade rather than plate.
There are some boiler plate grades that are OK but this is for a valve so I need a bar grade rather than plate.





RE: low temperature magnetic material
If you know of an alloy then simply search for that alloy number in other product forms.
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Plymouth Tube
RE: low temperature magnetic material
RE: low temperature magnetic material
RE: low temperature magnetic material
RE: low temperature magnetic material
RE: low temperature magnetic material
A/SA-516
A/SA-333 Gr 6
A/SA-350-LF2
All of the above can be purchased with impact toughness at -40 C and lower.
RE: low temperature magnetic material
Thanks jwhit. It looks like I will have to use cast grade. Does the LCC grade have the best magnetic properties (i.e. highest permeability)?
RE: low temperature magnetic material
RE: low temperature magnetic material
RE: low temperature magnetic material
Based on jwhit's statement I agreed with the comments on permeability
RE: low temperature magnetic material
RE: low temperature magnetic material
That is a good question and one I have pondered at times. The same holds true for A216 Gr.WCB and WCC, which are for use at warmer temperatures,that is, above -20F and have the same composition requirements. I had occasion to look at some LCC impact test results today and they ranged between 24 and 40 ft lbs at -50F/-46C.
I believe the forging grade that weldstan referred to is very similar to LCC.