Graphite Special-shaped Parts

Features

- Fine grain - Homogeneous structure - High density - Excellent thermal conductivity - High mechanical strength - Proper electrical conductivity - Minimum wettability to molten metals - Hard surface and good flexural strenght - Resistance to chemical erosion and thermal shock.

Physical and chemical index

		Fine-grain Specialty Graphite FXG-1		Fine-grain Specialty Graphite FXG-2
Item	Unit	Guarantee value	Typical value	Guarantee value	Typical value
Max grain size	mm	0.8	0.8	0.8	0.8
Bulk density	g/cm3	≥1.70	1.73	≥1.73	1.76
Specific resistance	μΩ.m	≤8.5	7.5	≤8.0	7
Bending strength	MPa	≥10.0	11	≥12.0	12.5
Compressive strength	MPa	≥24.0	27	≥31.0	34
Thermal Condcutivity	W/(m.k)	≥120	150	≥130	160
C.T.E.(100-600) °C	10-6/°C	≤2.5	2.2	≤2.5	2.1
Ash content	%	≤0.3	0.09	≤0.3	0.09

 

Item	Unit	Guarantee value	Typical value	Guarantee value	Typical value
Max grain size	mm	2	2	2	2
Bulk density	g/cm3	≥1.58	1.6	≥1.70	1.75
Specific resistance	μΩ.m	≤11.5	10.5	≤8.5	7.5
Bending strength	MPa	≥6.0	6.5	≥9.0	9.5
Compressive strength	MPa	≥18.0	18.5	≥30.0	31
Modulus of elasticity	GPa	≤9.3	7.5	≤12.0	9.5
C.T.E.(100-600) °C	10-6/°C	≤2.5	2.4	≤2.5	2.3
Ash content	%	≤0.3	0.09	≤0.3	0.09

High pure graphite

		high pure graphite
Item	Unit	baked twice	baked three time	baked four times
		impregnated once	impregnated twice	Impregnated three times
grain size	mm	≤325mesh	≤325mesh	≤325mesh
Bulk density	g/cm3	≥1.68	≥1.78	≥1.85
Specific resistance	μΩ.m	≤14	≤14	≤13
Bending strength	MPa	≥25	≥40	≥45
Compressive strength	MPa	≥50	≥60	≥65
Ash content	%	≤0.15	≤0.1	≤0.05

Isostatic graphite

Item	Unit	Isostatic graphite
grain size	μm	5-22
Bulk density	g/cm3	1.75-1.85
Specific resistance	μΩ.m	10-15
Bending strength	MPa	≥40
Compressive strength	MPa	≥70
Shore hardness		≥5
C.T.E.(100-600) °C	10-6/°C	3.2-5.2
Modulus of elasticity	GPa	9.5-12.5