What is the deal w. Alnico 4 ?

[Telemachos]

Addiction-fx sells Alnico 4 magnets in e-bay. I'm kinda puzzled as I can 't find no information on what specs. it has compared to other Alnico grades. Even Arnold and Magnetic Hold don't list Alnico 4. Am I missing s.th.?

[LtKojak]

Addiction-fx sells Alnico 4 magnets in e-bay. I'm kinda puzzled as I can 't find no information on what specs. it has compared to other Alnico grades. Even Arnold and Magnetic Hold don't list Alnico 4. Am I missing s.th.?

Alnico 4 is a proprietary recipe, not listed by the MMPA. Anyway, Arnold DOES have A4 and other non-official grades. Just download the *.PDF about Cast Magnets and you'll find all the info there.

http://www.arnoldmagnetics.com/WorkA...t.aspx?id=5144

Also Mojotone.com has A4 mags.

HTH,

[Telemachos]

Thank you. I will try to understand the charts and will discuss it w. my tech.

[salvarsan]

Alnico 4 is a proprietary recipe, not listed by the MMPA.

It's listed in the 0100-00 MMPA doc in the obsolete/specialty section.

[JGundry]

There is a standard for A4 but it is old. The only reference BH curve I could find for A4 was from 1947.