石墨-放電加工應用
替代銅製品易加工量輕
可分粗細放電至成品
汽車把手模具、輪框圈模具、保險桿模具
鑄造鋼模具、粉末治具模具
| Proerty | values | R-8500 | R-8510 | R-8650 | R-8710 | E+20 | E+25 |
| Density | g/cm3 | 1.77 | 1.83 | 1.84 | 1.88 | 1.81 | 1.83 |
| Porosity(Open) | % | 14 | 10 | 10 | 10 | 10 | 8 |
| Grain Size |
μm |
10 | 10 | 7 | 3 | 11 | 9 |
| Hradness Rockwell B 5/100 |
HRB |
70 | 95 | 95 | 105 | 70 | 80 |
| Flexural Strength |
Mpa |
50 | 60 | 65 | 85 | 52 | 55 |
| Compressive Strength |
Mpa |
110 | 130 | 150 | 170 | 103 | 119 |
|
Specific electrical resistance |
µΩm | 14 | 13 | 14 | 13 | 12.4 | 12.2 |
| Thermal expension | x10-6K-1 | 4.2 | 4.2 | 4.1 | 4.7 | 5 | 5.6 |
|
Thermal conductivity |
Wm-1K-1 | 90 | 105 | 95 | 105 | 104 | 106 |
|
Ash Value |
ppm | 200 | 200 | 200 | 200 | 400 | 400 |
