Automotive Industry Silicon Nitride Si3N4 Ceramic Position Pins
1 . Description
Material | Si3N4/silicon nitride |
Features | 1. Thermal shock resistance 2. High temperature mechanical strength 3. Wear resistance 4. Corrosion resistance 5. Electrical insulation 6. High toughness |
Usage | 1. Forming die parts (hot forging die, various forming) 2. Casting parts (low pressure casting, various metal melting furnace equipment) 3. Die casting machine parts (plunger, sleeve) 4. Welding machine (positioning pin for resistance welding, guide roller for steel pipe welding) 5. Parts of the powder squeezing machine (classifier, air squeezing machine, sand mill) 6. Wear-resistant parts (wire drawing machine guide roller, motor shaft, bearing, fishing tackle guide cup, traction winch) 7.Semiconductor manufacturing equipment parts (platform parts, linear motors) |
2 . Material Advantage
High strength over a broad temperature range
Moderate thermal conductivity
Low coefficient of thermal expansion
Moderately high elastic modulus
Excellent thermal shock resistance
Ability to withstand high structural loads to high temperature
Superior wear resistance
Unusually high fracture toughness
3 . Manufacturing technique:
Uni-axial pressing
Iso-static pressing
Extrusion
Slip casting
Si3n4 Silicon Nitride Ceramic
Item | | |
Rockwell hardness (HRA) | ≥75 | |
volume density(g/cm3) | 3.25 | >3.25 |
Dielectric constant (ε r20℃,1MHZ) | | 8.0(1MHz) |
Electric volume resistivity(Ω.cm) | 1014 | 108 |
Breaking tenacity(Mpa m1/2) | 6-9 | 6-8 |
Elasticity modulus (GPa) | 300-320 | 300-320 |
Thermal expansivity (m/K *10-6/℃) | 3.1-3.3 | 3.4 |
Thermal conductivity (W/MK) | 15-20 | 34 |
Weibull modulus(m) | 12-15 | 15-20 |
