FerroSpire Black
Black concrete pigment – magnetite and iron oxide
Black iron oxide is generally used for grey, anthracite and black concrete products. FerroSpire Black from IonSpire Materials is a liquid, water-based black pigment of natural magnetite (Fe3O4), based on Nordic natural raw materials.
Magnetite and black iron oxide
Magnetite (Fe3O4) is a black iron oxide. FerroSpire Black is made from natural magnetite, and the black pigment is based on Nordic natural raw materials.
Four black grades
FerroSpire Black comes in four grades: coarser black (IS-3101), standard black (IS-3102), extra dark black with a slight blue undertone, indicative (IS-3301), and deep black with carbon black (IS-3302). All four are liquid and used for concrete, roof tiles and paving stones.
Applications
Black iron oxide is generally used for grey, anthracite and black concrete products, including roof tiles and paving stones. It is also used together with red and yellow iron oxide when blending brown shades.
Black iron oxide and PCE
With PCE superplasticisers, black iron oxide can in some cases turn out paler than expected. We are happy to test FerroSpire Black with the PCE product you use: send us the PCE product, and we will arrange a test cast.
Dosage
Typically 2–6 % dry pigment by weight of cement, but it depends on the desired colour – talk to us and order samples.
Magnetite for industry: MagSpire
MagSpire IS-3903 is micronised natural magnetite (Fe3O4) in liquid, water-based form for industrial applications where magnetite is needed, for example magnetic paints and coatings. MagSpire is tailored to the customer, so we do not state fixed technical values.
FerroSpire Black and MagSpire
The four black grades for concrete, and MagSpire IS-3903 for industry.
Considering FerroSpire Black?
Request a quote in the web shop, or contact us about samples and test casts.
FAQ
Frequently asked questions
What is the difference between magnetite and black iron oxide?
Magnetite (Fe3O4) is a black iron oxide. FerroSpire Black is a liquid, water-based black pigment of natural magnetite, based on Nordic natural raw materials.
Which black grade should I choose?
IS-3102 is our standard black grade for concrete products, roof tiles and paving stones. IS-3101 is slightly coarser, IS-3301 is extra dark black with a slight blue undertone (indicative), and IS-3302 is deep black with carbon black. A test cast shows how the shade looks in your concrete.
Does FerroSpire Black work with PCE?
We are happy to test FerroSpire Black with the PCE product you use: send us the PCE product, and we will arrange a test cast.
How much black pigment do I need?
Typically 2–6 % dry pigment by weight of cement, but it depends on the desired colour – talk to us and order samples.
What is MagSpire IS-3903?
MagSpire IS-3903 is micronised natural magnetite (Fe3O4) in liquid, water-based form for industrial applications. It is tailored to the customer: fineness and properties are specified together with you according to your application.