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Ferroboron
To GOST 14848-69
Ferroborn it is widely applied for alloyage and modifyings of steel . Pig-iron and alloys of nonferrous metals.
Boron steel are also rather perspective constructional material in aircraft industry and tractor industry.
The boron as alloying element aven at its small maintenances in steel renders the big influence on a complex of
mechanical properties and promotes economy of scarce and dear alloying elements. The pine forest influences
on hardness penetration steel, and it is shown most considerably at its concentration in a firm solution within the limits
of 0,0001-0,0004% B.
Chemical composition
| Grade |
Chemical composition, % |
| B |
Si |
Al |
C |
S |
P |
Cu |
| min |
max |
| ÔÁ 20 |
20,0 |
2,0 |
1,8 |
0,05 |
0,01 |
0,015 |
0,05 |
| ÔÁ 17 |
17,0 |
3,0 |
2,0 |
0,20 |
0,02 |
0,030 |
0,10 |
| ÔÁ 17À |
17,0 |
4,0 |
2,0 |
- |
- |
- |
- |
| ÔÁ 10 |
10,0 |
7,0-15,0 |
8,0-12,0 |
- |
- |
- |
- |
| ÔÁ 10À |
10,0 |
5,0 |
8,0-10,0 |
- |
- |
- |
- |
| ÔÁ 6 |
6,0 |
12,0 |
6,0-12,0 |
- |
- |
- |
- |
| ÔÁ 6À |
6,0 |
5,0 |
6,0-12,0 |
- |
- |
- |
- |
|
Gravimetric composition
| Size grade |
Lump size, mm |
Max weight fraction product , % |
Maximum dimension oversize product, mm |
| oversize |
undersize |
| 1 |
3,2-100 |
10 |
6 |
120 |
| 2 |
3.2-50 |
10 |
8 |
60 |
| 3 |
3,2-10 |
10 |
10 |
12 |
| 4 |
äî 3,2 |
10 |
- |
4 |
|
User in lumps of 2-100 mm, packed in soft-bags.
Density 5,86-6,67 ã/ñì3, Melting point 1627-1780°Ñ
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