Product Model | BN-H | BN-99 | BN-A | BN-B | BN-C | BN-D | BN-E | BN-S |
Main Components | BN>99.7% | BN>99% | BN+AL+SI | BN+ZR+AL | BN+SIC | BN +ZRO2 | BN+ALN | BN+SIN |
Color | Milky White | Milky White | Pale | Pale | Grayish Green | Pale | Grayish Green | Dark Gray |
Density | 1.5-1.6 | 1.95-2.05 | 2.2-2.3 | 2.25-2.35 | 2.4-2.5 | 2.75-2.85 | 2.75-2.85 | 2.2-2.3 |
Room-Temperature Resistivity | >1014 | >1014 | >1014 | >1014 | >1014 | >1014 | >1014 | >1014 |
Maximum Operating Temperature (ºC) Under Air Inert Gas Under High Vacuum (For A Long Time) | 900 2100 1900 | 900 2100 1900 | 1000 1750 1750 | 1000 1800 1800 | 1000 1800 1800 | 1000 1800 1800 | 1000 1800 1800 | 1000 1800 1800 |
Three Point Bending Strength (Mpa) | 18 | 30 | 60 | 85 | 85 | 100 | 120 | 220 |
Compressive Strength | 25 | 45 | 145 | 145 | 150 | 220 | 220 | 400 |
Thermal Expansion Coefficient (Room Temperature-1000ºC) (10-6/K) | 1.5 | 1.8 | 2 | 2 | 2.8 | 3.5 | 2.8 | 2.8 |
Thermal Conductivity (W/mK) | 35 | 40 | 35 | 35 | 45 | 30 | 85 | 85 |
Shore Hardness (HSD) | 12 | 18 | 40 | 40 | 40 | 45 | 45 | 55 |
Typical Application Areas | Vacuum High Temperature | Vacuum High Temperature | Powder Metallurgy | Powder Metallurgy | Powder Metallurgy | Metal Casting | Powder Metallurgy | Powder Metallurgy |
High Temperature Electric Furnace Components (High Temperature Insulation Sleeve, Etc) | √ | √ | √ | √ | √ | √ | √ | |
Metal Evaporation Crucible | √ | √ | √ | |||||
Various Devices for Molten Metal or Glass | √ | √ | √ | √ | √ | √ | √ | √ |
Precious Metal or Special Alloy Casting Mold Components | √ | √ | √ | |||||
High Temperature Support and Other Load-Bearing Components | √ | √ | √ | √ | ||||
Molten Metal Transport Pipes, Nozzles, Etc | √ | √ | √ | √ | √ | √ | √ |