Graphite Electrode for Steel Making

• Type: Graphite Crucible
• Composition: Carbon
• Carbon Content: High-Carbon
• Grade: Industrial Grade
• Forming Way: Isostatic Graphite
• Crystal Morphology: Compact Crystalline Graphite
• Model NO.: graphite
• Price: Lower
• Service: Better
• Transport Package: Polywood Case
• Specification: as drawing
• Trademark: JIAXIN
• Origin: China
• Production Capacity: 5000000

Product Description

Graphite electrode, mainly from the domestic petroleum coke and imported needle coke, is widely used in electric arc furnace,ladle furnace, submerged arc electric furnace for the production of alloy steel, metal and nonmetallic materials.

Technical Quota of Graphite Electrodes

 

RP Specifications:

Item		Unit	Norminal Diameter(mm)
			75~130	150~225	250~300	350~500
Electric Resistivity Max	Electrode	μΩ·m	8.5	9.0	9.0	9.0
	Nipples		6.5	6.5	6.5	6.5
Flexural Strength Min	Electrode	MPa	9.8	9.8	7.8	6.4
	Nipples		13.0	13.0	13.0	13.0
Elastic Modulus Max	Electrode	GPa	9.3	9.3	9.3	9.3
	Nipples		14.0	14.0	14.0	14.0
Bulk Density Min	Electrode	g/cm³	1.58	1.52	1.52	1.52
	Nipples		1.68	1.68	1.68	1.68
C.T.E. Max(100ºC~600ºC)	Electrode	10¯6 /ºC	2.9	2.9	2.9	2.9
	Nipples		2.7	2.7	2.8	2.8
Ash Max		%	0.5	0.5	0.5	0.5

 HP Specifications:

Item		Unit	Norminal Diameter(mm)
			200~400	450~500	550~600
Electric Resistivity Max	Electrode	μΩ·m	6.8	7.5	7.0
	Nipples		5.5	5.5	5.0
Flexural Strength Min	Electrode	MPa	10.5	9.8	10.0
	Nipples		14.0	14.0	16.0
Elastic Modulus Max	Electrode	GPa	12.0	12.0	12.0
	Nipples		16.0	16.0	18.0
Bulk Density Min	Electrode	g/cm³	1.60	1.60	1.65
	Nipples		1.70	1.70	1.75
C.T.E. Max(100ºC~600ºC)	Electrode	10¯6 /ºC	2.4	2.4	2.4
	Nipples		2.2	2.2	2.2
Ash Max		%	0.3	0.3	0.3

UHP Specifications:

Item		Unit	Norminal Diameter(mm)
			300~400	450~500	550~600
Electric Resistivity Max	Electrode	μΩ·m	6.2	6.3	5.8
	Nipples		4.5	4.5	4.0
Flexural Strength Min	Electrode	MPa	11.5	11.5	11.0
	Nipples		20.0	20.0	22.0
Elastic Modulus Max	Electrode	GPa	14.0	14.0	14.0
	Nipples		20.0	20.0	22.0
Bulk Density Min	Electrode	g/cm³	1.71	1.70	1.68
	Nipples		1.76	1.78	1.80
C.T.E. Max(100ºC~600ºC)	Electrode	10¯6 /ºC	1.5	1.5	1.5
	Nipples		1.4	1.4	1.3
Ash Max		%	0.3	0.3	0.3

Current-Carrying Capacity of RP graphite electrodes

Norminal diameter(mm)	Current-Carrying Capacity(A)	Current Density(A/cm²)
75	1000~1400	22-31
100	1500~2400	19-30
130	2200~3400	17~26
150	3000~4500	16-25
200	5000~6900	15-21
250	7000~10000	14-20
300	10000~13000	14~18
350	13500~18000	14~18
400	18000~23500	14~18
450	22000~27000	13~17
500	25000~32000	13~16
550	30000~42000	13~16
600	40000~53000	13~16

Current-Carrying Capacity of HP graphite electrodes

Norminal diameter(mm)	Current-Carrying Capacity(A)	Current Density(A/cm²)
200	5500~9000	18-28
250	8000~13000	18-25
300	13000~17400	17~24
350	17400~24000	17~24
400	21000~31000	16~24
450	25000~40000	15~24
500	30000~48000	15~24
550	44000~58000	15~24
600	52000~67000	15~24