Graphite Electrodes and Nipple

Graphite electrodes and nipples are essential components used in electric arc furnaces for the production of steel and other metals.

Graphite electrodes and nipples are critical components in the steelmaking process, as they play a crucial role in generating the high temperatures required to melt and refine metals. The quality and performance of the electrodes and nipples are essential to the overall efficiency and productivity of the electric arc furnace, and therefore they must be manufactured to strict quality standards.

Graphite electrodes and nipple details

Graphite Electrode

Item		Nominal diameter mm
		75~130		150~225		250~300		350~450		500~800
Grade		Excellent	一	Ex	一	Ex	一	Ex	一	Ex	一
Resistivity  μΩ·m ≤	Electrode	8.5	10.0	9.0	10.5	9.0	10.5	9.0	10.5	9.0	10.5
	Connector	8.0		8.0		8.0		8.0		8.0
Flexural strength MPa ≥	Electrode	10.0		10.0		8.0		7.0		6.5
	Connector	15.0		15.0		15.0		15.0		15.0
Elastic Modulus GPa ≤	Electrode	9.3		9.3		9.3		9.3		9.3
	Connector	14.0		14.0		14.0		14.0		14.0
Bulk density g/cm3 ≥	Electrode	1.58		1.53		1.53		1.53		1.52
	Connector	1.70		1.70		1.70		1.70		1.70
Thermal expansion coefficient 10-6/℃ room temperature ~600℃ ≥	Electrode	2.9		2.9		2.9		2.9		2.9
	Connector	2.7		2.7		2.8		2.8		2.8
Ash % ≤		0.5		0.5		0.5		0.5		0.5

High Power Graphite Electrodes

Item		Nominal diameter mm
		200~400	450~500	550~700
Resistivity  μΩ·m ≤	Electrode	7.0	7.5	7.5
	Connector	6.3	6.3	6.3
Flexural strength  MPa ≥	Electrode	10.5	10.0	8.5
	Connector	17.0	17.0	17.0
Elastic Modulus  GPa ≤	Electrode	14.0	14.0	14.0
	Connector	16.0	16.0	16.0
Bulk density  g/cm3 ≥	Electrode	1.60	1.60	1.60
	Connector	1.72	1.72	1.72
Thermal expansion coefficient 10-6/℃ Room temperature~600℃ ≥	Electrode	2.4	2.4	2.4
	Connector	2.2	2.2	2.2
Ash % ≤		0.5	0.5	0.5

Ultra High Power Graphite Electrode

Item		Nominal diameter mm
		300~400	450~500	550~650	700~800
Resistivity  μΩ·m ≤	Electrode	6.2	6.3	6.0	5.8
	Connector	5.3	5.3	4.5	4.3
Flexural strength  MPa ≥	Electrode	10.5	10.5	10.0	10.0
	Connector	20.0	20.0	22.0	23.0
Elastic Modulus  GPa ≤	Electrode	14.0	14.0	1.66	14.0
	Connector	20.0	20.0	1.78	22.0
Bulk density  g/cm3 ≥	Electrode	1.67	1.66	1.66	1.68
	Connector	1.74	1.75	1.78	1.78
Thermal expansion coefficient 10-6/℃ Room temperature~600℃ ≥	Electrode	1.5	1.5	1.5	1.5
	Connector	1.4	1.4	1.3	1.3
Ash  % ≤		0.5	0.5	0.5	0.5

Graphite electrode applications

1. Electric arc furnace for electric arc furnace.
2. Used in ore thermal electric furnace.
3. Used in resistance furnaces
4. Used to prepare special-shaped graphite products.

Advantages of graphite electrodes

• Corrosion resistance: Graphite electrodes have excellent corrosion resistance and can resist the erosion of many strong acids, alkalis, solvents, and other corrosive substances. This makes them suitable for many industrial processes with corrosive environments.
• High-temperature stability: Graphite electrodes remain stable at high temperatures, which allows them to be used in high-temperature reactions and processes, such as electric arc furnaces, high-temperature electrolysis, etc.
• Conductive properties: Graphite is an excellent conductive material and can effectively conduct electric current.
• High mechanical strength: Graphite electrodes have high mechanical strength and hardness, making them less likely to deform or break during use.
• Ease of Processing: Graphite is relatively easy to process into various shapes and sizes and can be customized to specific application needs.
• Oxidation resistance: Graphite electrodes have specific oxidation resistance.

Graphite electrode transportation and delivery

Rongsheng company introduction

Rongsheng Company is a professional supplier of refractory materials, with 10 years of export experience, exporting to more than 80 countries. The main products of Rongsheng Company include various refractory bricks, unshaped refractory materials, metallurgical materials, thermal insulation materials, and so on.