1. SPECIFICATION
Item | Unit | Steel | Si3N4 | ZrO2 | Al2O3 | |
Density | g/cm3 | 7.85 | 3.20-3.30 | 6.05 | 3.95 | |
Thermal Expansion Coefficient | 10-6/k | 10.0 | 3.2 | 10.5 | 9.1 | |
Elastic Modulus | GPa | 208 | 300-320 | 210 | 380 | |
Possion Ratio |
| 0.30 | 0.26 | 0.30 | 0.27 | |
Hardness | (HV) |
| 700 | 1500-1800 | 1200 | 1800 |
(HRC) |
| 62 | 75-80 | 70 | 80 | |
Bending Strength(800℃) | MPa | 2400 | 200 | 300 | 220 | |
Crushing Strength(800℃) | MPa | -- | 1400 | 2100 | 1500 | |
Fracture Toughness | MPa.m1/2 | 25.0 | 6.0-7.0 | 10.0 | 3.5 | |
Thermal Conductivity(500℃) | W/mk | 30-40 | 18 | 2 | 25 | |
Specific Resistivity(600℃) | Ω.mm2/m | 0.1-1 | 1018 | 1015 | 108 | |
Max Usage Temperature | ℃ | 300 | 800 | 550 | 1850 | |
Corrosion Resistance |
| Worse | Better | Better | Better | |
Fatigue Stress Recycles(50% Fail) | Times | 107 | 107~109 | 105 | - | |
Dimension Stablity with Temperature |
| Large | Little | - | - | |
Centrifugal Force |
| Large | Little | Large | Medium | |
Non-Lubrication Friction |
| Large | Little | Little | Little | |
Magnetism |
| Exist | Naught | Naught | Naught | |
Failure Mode under Rolling Contract |
| Flake | Flake | Smash | Smash | |
OTHER SPECIFICATIONS CAN BE DISCUSSED AS PER BUYER’S OPTION
2. PACKING
PLASTIC FILM (INNER LAYER) AND CARTON BOX OR PLYWOOD CASE (OUTER LAYER)
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