TECHNOmag

Bar magnets, flat pot magnets, raw magnets and accessories

We provide raw magnets made out of hard ferrite, neodymium, samarium-cobalt (SmCo) and AlNico (AINiCo), respectively in cylinder and cube shapes.

Various sizes and types available. We look forward to receiving your request.

hard ferrite

Werkstoff Hartferrit.

Cost/benefits:

low cost

Adhesion:

low adhesion

Operation temperature:

up to 200°C

Mechanical impact:

excellent mechanical stability

Chemcial resistance:

high chemical resistance, as is the case for all ceramic materials

Toxicity:

practically environmentally neutral, non-toxic.
Under certain conditions (e.g. acidic media), hard ferrites containing barium may release minimal quantities of this substance.
As barium is a heavy metal, it makes sense to use strontium ferrite magnets for certain applications.

Subsequent processing:

only possible via grinding

Neodym (NdFeB)

Neodym Eisen Bor (NdFeB).

Cost/benefits:

medium price range

Adhesion:

offers the greatest adhesive strength

Operation temperature:

up to 80°C (high-quality magnets up to 200°C)

Mechanical impact:

less brittle than SmCo magnets, but just as sensitive to breakage from impact or blows

Chemical resistance:

high proportion of pure iron means that it is not resistant to moisture, acids or alkalis. Galvanization or organic sealing of the surface is required for permanent protection.

Toxicity:

Inhaling grinding dust must be avoided, no direct influences are known.

Subsequent processing:

only possible via grinding and eroding

Samarium-Cobalt (SmCo)

Samarium-Cobalt (SmCo).

Cost/benefits:

high cost

Adhesion:

relatively high adhesive strength

Operation temperature:

up to 250°C

Mechancial impact:

very brittle

Chemical resistance

substances that contain freely moveable hydrogen ions are not suitable for SmCo magnets. These include all types of acids and alkalis, sodium nitrate solutions (at higher temperatures) and also hydrogen gas.

Toxicity:

Inhaling grinding dust must be avoided, no direct influences are known.

Subsequent processing:

only possible via grinding and eroding

AlNico (AINiCo)

Aluminium-Nickel-Cobalt (AlNiCo).

Cost/benefits:

high cost

Adhesion:

medium adhesion

Operation temperature:

up to 450°C

Mechanical impact:

hard, slightly lower mechanical stability than hard ferrite, crystalline structure

Chemcial resistance

chemical resistance similar to high-alloy steel, not resistant in inorganic acids, sea water or strong alkali solutions. The material is not corroded by organic solvents, alcohols, oils or petrol.

Toxicity:

environmentally neutral, non-toxic. Persons who react to nickel may experience the same side effects as with other materials containing nickel.
Not for use in the toy industry or with foodstuffs.

Subsequent processing:

only possible via grinding and eroding
Back to overview