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

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Proerty values R-8500 R-8510 R-8650 R-8710 E+20
Density g/cm3 1.77 1.83 1.84 1.88 1.81
Porosity(Open) % 14 10 10 10 10
Grain Size μm
10 10 7 3 11
Hradness Rockwell B 5/100 HRB
70 95 95 105 70
Flexural Strength Mpa
50 60 65 85 52
Compressive Strength Mpa
110 130 150 170 103
Specific electrical resistance
µΩm 14 13 14 13 12.4
Thermal expension x10-6K-1 4.2 4.2 4.1 4.7 5
Thermal conductivity
Wm-1K-1 90 105 95 105 104
Ash Value
ppm 200 200 200 200 400

Proerty values E+25 E+30 G-330 HK-2 HK-3
Density g/cm3 1.83 1.84 1.79 1.82 1.84
Porosity(Open) % 8 - 15 - -
Grain Size μm
9 8 12 7 3
Hradness Rockwell B 5/100 HRB
80 90 56 64 78
Flexural Strength Mpa
55 65 39.2 64 88
Compressive Strength Mpa
119 134 - - -
Specific electrical resistance
µΩm 12.2 12.20 13 13.5 15.5
Thermal expension x10-6K-1 5.6 6 4.8 - -
Thermal conductivity
Wm-1K-1 106 105 104 - -
Ash Value
ppm 400 400 400 400 400