HP graphite electrodes processing manufacture;

		Unit	Nominal Diameter(mm)
			350,400	450,500	550,600
Specific resistance	Electrode	μΩ.m	4.8-6.0	4.8-6.2	5.0-6.2
	Nipple		3.5-4.5	3.8-4.5	3.8-4.5
Bending Strength	Electrode	Mpa	≥12	≥11	≥11
	Nipple		≥18	≥18	≥18
Elastic Modulus	Electrode	Gpa	≤14	≤14	≤14
	Nipple		≤18	≤18	≤18
Bulk Density	Electrode	g/cm3	1.65-1.72	1.66-1.74	1.66-1.74
	Nipple		1.76-1.78	1.76-1.82	1.78-1.82
Ash	Electrode	%	≤0.3	≤0.3	≤0.3
	Nipple		≤0.3	≤0.3	≤0.3
C.T.E.(100-600°C)	Electrode	10-6/°C	1.2-1.4	1.2-1.4	1.2-1.4
	Nipple		1.0-1.2	1.0-1.2	1.0-1.2

 

 

2. Current Carrying Capacity (UHP-A)

 

Nominal Diameter		Cross Sectional Area	Electrical are furnace		Refiners furnace
			Current Carrying Capacity	Current Density	Current Carrying Capacity	Current Density
in	mm	cm*cm	A	A/cm*cm	A	A/cm*cm
14	350	973	23000-32000	24-33	26000-35000	27-36
16	400	1275	28000-41000	22-32	31000-44000	24-34
18	450	1622	34000-48500	21-30	36000-49500	22-31
20	500	2000	40000-58000	20-29	42000-60500	21-30
22	550	2427	46000-65000	19-27	49000-70000	20-29
24	600	2892	52000-75000	18-26	56000-81000	19-28

 

 

3. Ultra High Power graphite Electrode Technical Properties(UHP-B)

 

Item		Unit	Nominal Diameter
			300-400	450-500
Specific resistance	Electrode	μΩ.m	≤6.2	≤6.5
	Nipple		≤5.5	≤5.5
Bending Strength	Electrode	Mpa	≥10.5	≥10.0
	Nipple		≥16	≥16
Elastic Modulus	Electrode	Gpa	≤14	≤14
	Nipple		≤18	≤18
Bulk Density	Electrode	g/cm3	≥1.65	=1.64
	Nipple		≥1.72	≥1.70
Ash	Electrode	%	≤0.3	≤0.3
	Nipple		≤0.3	≤0.3
C.T.E.(100-600°C)	Electrode	10-6/°C	≤1.5	≤1.5
	Nipple		≤1.4	≤1.4

 

 

4,Current Carrying Capacity(UHP-B)

 

Nominal Diameter		Cross Sectional Area	Current Carrying Capacity	Current Density
in	mm	cm*cm	A	A/cm*cm
12	300	716	15000-22000	20-30
14	350	973	20000-30000	20-30
16	400	1275	25000-40000	19-30
18	450	1622	32000-45000	19-27
20	500	2000	38000-55000	18-27

 

 

5, High Power graphite Electrode Technical Properties(HP-A)

 

Item		Unit	Nominal Diameter(mm)
			350,400	450,500	550,600
Electric resistance	Electrode	μΩ.m	≤6.8	≤6.5	≤7.0
	Nipple		≤5.5	≤5.5	≤5.5
Bending Strength	Electrode	Mpa	≥11	≥12.5	≥11
	Nipple		≥18	≥17	≥16
Elastic Modulus	Electrode	Gpa	≤10	≤10	≤10
	Nipple		≤16	≤16	≤16
Bulk Density	Electrode	g/cm3	≥1.64	≥1.64	≥1.64
	Nipple		≥1.74	≥1.74	≥1.75
Ash	Electrode	%	≤0.3	≤0.3	≤0.3
	Nipple		≤0.3	≤0.3	≤0.3
C.T.E.(100-600°C)	Electrode	10-6/°C	≤2.0	≤1.8	≤1.8
	Nipple		≤2.5	≤1.5	≤1.5

 

 

6, Current Carrying Capacity (HP-A)

 

Nominal Diameter		Cross Sectional Area	Electrical are furnace		Refiners furnace
			Current Carrying Capacity	Current Density	Current Carrying Capacity	Current Density
in	mm	cm*cm	A	A/cm*cm	A	A/cm*cm
14	350	973	17500-24500	18-25	20000-28000	21-29
16	400	1275	21500-31000	17-24	25000-35000	19-28
18	450	1622	25500-39000	16-24	30000-45000	19-28
20	500	2000	21000-48000	15-23	36000-54000	18-27
22	550	2427	34000-56000	14-22	40000-60000	18-25
24	600	2892	36000-65000	12-22	45000-65000	16-23

 

 

7, High Power graphite Electrode Technical Properties(HP-B)

 

Item		Unit	Nominal Diameter (mm)
			200-400	450-500
Electric resistance	Electrode	μΩ.m	≤7	≤7.5
	Nipple		≤6.5	≤6.5
Bending Strength	Electrode	Mpa	≥10.5	≥9.8
	Nipple		≥14	≥14
Elastic Modulus	Electrode	Gpa	≤12	≤12
	Nipple		≤16	≤16
Bulk Density	Electrode	g/cm3	≥1.60	≥1.60
	Nipple		≥1.70	≥1.70
Ash	Electrode	%	≤0.3	≤0.3
	Nipple		≤0.3	≤0.3
C.T.E.(100-600°C)	Electrode	10-6/°C	≤2.4	≤2.4
	Nipple		≤2.2	≤2.2

 

 

 

8, Current Carrying Capacity (HP-B)

 

Nominal Diameter		Current Carrying Capacity	Current Density
in	mm	A	A/cm*cm
8	200	5500-9000	18-25
9	225	6500-10000	18-25
10	250	8000-13000	18-25
12	300	13000-17400	17-24
14	350	17400-24000	17-24
16	400	21000-31000	16-24
18	450	25000-40000	15-24
20	500	30000-48000	15-24

 

 

9, Regular Power graphite Electrode Technical Properties (RP-A)

 

Item		Unit	Nominal Diameter(mm)
			350	400-600
Electric resistance	Electrode	μΩ.m	≤9.0	≤9.5
	Nipple		≤6.5	≤6.5
Bending Strength	Electrode	Mpa	≥7.8	≥7.8
	Nipple		≥16	≥16
Elastic Modulus	Electrode	Gpa	≤9.3	≤9.3
	Nipple		≤14	≤14
Bulk Density	Electrode	g/cm3	≥1.54	≥1.54
	Nipple		≥1.70	≥1.70
Ash	Electrode	%	≤0.4	≤0.4
	Nipple		≤0.4	≤0.4
C.T.E.(100-600°C)	Electrode	10-6/°C	≤2.8	≤2.8
	Nipple		≤1.8	≤1.8

 

 

10,Current Carrying Capacity(RP-A)

 

 

Nominal Diameter		Cross Sectional Area	Current Carrying Capacity	Current Density
in	mm	Cm*Cm	A	A/Cm*Cm
14	350	973	15000-22000	15-22
16	400	1275	20000-28000	15-21
18	450	1622	24000-34000	13-20
20	500	2000	28000-36000	13-18
22	550	2427	31500-41000	13-17
24	600	2892	38000-46000	13-16