Ferro Boron
An iron–boron alloy used to introduce small, closely controlled additions of boron into steel and weld metal.
Boron works in very small quantities. Additions measured in parts per million raise the hardenability of steel far more efficiently than the same weight of almost any other element, which is why ferro boron is the preferred carrier rather than boron in elemental form.
In welding consumables ferro boron appears in hard-facing and low-alloy formulations, where boron forms hard borides in the deposit and contributes to abrasion resistance. Because the addition is so small, consistency between batches matters more here than in almost any other ferro alloy we grind.
Forms & grades supplied
- Powder and crushed lump
- Ground and screened to your agreed size range
- Packed to limit moisture pick-up in storage
Industries served
Ask us for
- Chemical specification and test certificate
- Particle size / mesh range
- Packing options and lead time
- A sample for trial
Standard grades
The grades below are the standard specifications this material is traded to. We supply against your specification — tell us the grade and we will confirm what we can hold.
| Grade | B | C | Si | Al | S | P | Fe |
|---|---|---|---|---|---|---|---|
| FeB 18–20 | 18.00–20.00 | 0.50 max | 1.00 max | 0.10 max | 0.05 max | 0.05 max | Balance |
| FeB 15–17 | 15.00–17.00 | 0.50 max | 1.00 max | 0.10 max | 0.03 max | 0.03 max | Balance |
Scroll the table sideways to see every column
Boron is added in very small quantities, so batch-to-batch consistency of the boron content matters more here than on almost any other ferro alloy.
Please note. These are indicative industry-standard ranges shown for guidance. Where a grade name encodes a nominal sieve or density, that is what the designation means in the trade — the size range actually supplied, and the packing, are set to your requirement and confirmed on your order. The binding specification for any order is the one on your purchase order and the test certificate supplied with the consignment — see how we test and certify a lot. Ask us for a datasheet for the exact grade you need.
Where Ferro Boron is used
- Hardenability control in alloy and structural steel
- Grain refinement
- Hard-facing electrodes and flux cored wires
- Boron-bearing powder metallurgy alloys
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