This grade is commonly used as an additive to concrete. Boron content less than 75%. NQA certs are available. Call to discuss. This item cannot be purchased on-line.
Technical data
| • Appearance (dry state): | Color | Black |
|---|---|---|
| • Chemical composition: | Chemical formula: | B4C Application |
| Grade | NG (Nuclear) | |
| B + C min. | 98 | |
| B (Boron) min. | 76 | |
| C (Carbon) max. | 24 | |
| B2O3 | 0.1 | |
| Fe(Iron) max. | 0.1 | |
| Si(Silicon) | 0.01 | |
| N (Nitrogen) | 0.5 | |
| Isotope B10 (atomic weight) | 19.5-21.5% | |
| •Physical data: | Knoop hardness(0.1) | 3000 |
| Mohs hardness | <9.5 | |
| Specific gravity: | 2.51 | |
| Melting point: | 2723 °F | |
| Structure: | Monocrystalline |
Common Nuclear Grades:
|
|
UKA Grade | Ungraded Particle Size | Typical Application | Notes |
| 1. | NG112M | 112 micron | Additive to concrete | B<75% |
| 2. | NG36L | 36 micron | B<70% | |
| 3. | NG24H | 24 micron | Nuclear Shielding Panels, Reaction Control Rods, Etc. |
B>76% |
| 4. | NG24HE | 24 micron | B>76% + Enhanced Heat Transfer Capability | |
| 5. | NG100H | 100 micron | B>76% | |
| 6. | NG100HE | 100 micron | B>76% + Enhanced Heat Transfer Capability | |
| 7. | NG6H | 6 micron | B>76% | |
| 8. | NG6HE | 6 micron | B>76% + Enhanced Heat Transfer Capability |
