Graphite Electrode Grade RP HP UHP

• Type: Graphite Electrodes
• Composition: C
• Carbon Content: High-Carbon
• Grade: RP
• Forming Way: Extruded Graphite
• Crystal Morphology: Graphiting
• Model NO.: RP/HP/UHP
• Size: 200-600mm
• Transport Package: Wooden Cases
• Specification: RP/HP/UHP
• Trademark: YJ
• Origin: Shandong Dezhou
• HS Code: 85451100
• Production Capacity: 25000mt

Product Description

Specitications of Regular Power,High Power,Ultra-high Power Graphite Electrode
 

Itme		Unit	/mm   Norminal diameter (mm)
			Regular Power										High Power			Ultra-high Power
			75-130		150-225		250-300		350-450		500-800		200~400	450~500	550~700	300~400	450~500	550~650	700~800
			HG	FG	HG	FG	HG	FG	HG	FG	HG	FG
Electrical Resistivity MAX	Electrode	μΩ·m	8.5	10.0	9.0	10.5	9.0	10.5	9.0	10.5	9.0	10.5	7.0	7.5	7.5	6.2	6.3	6.0	5.8
	Nipple		8.0		8.0		8.0		8.0		8.0		6.3	6.3	6.3	5.3	5.3	4.5	4.3
Flexural  strength       MIN	Electrode	MPa	10.0		10.0		8.0		7.0		6.5		10.5	10.0	8.5	10.5	10.5	10.0	10.0
	Nipple		15.0		15.0		15.0		15.0		15.0		17.0	17.0	17.0	20.0	20.0	22.0	23.0
Elastic modulus MIN	Electrode	GPa	9.3		9.3		9.3		9.3		9.3		14.0	14.0	14.0	14.0	14.0	14.0	14.0
	Nipple		14.0		14.0		14.0		14.0		14.0		16.0	16.0	16.0	20.0	20.0	22.0	22.0
Bulk density       MIN	Electrode	g/cm^3	1.58		1.53		1.53		1.53		1.52		1.60	1.60	1.60	1.67	1.66	1.66	1.68
	Nipple		1.70		1.70		1.70		1.70		1.70		1.72	1.72	1.72	1.74	1.75	1.78	1.78
C.T.E(100ºC-600ºC)      MAX	Electrode	10^-6/ºC	2.9		2.9		2.9		2.9		2.9		2.4	2.4	2.4	1.5	1.5	1.5	1.5
	Nipple		2.7		2.7		2.8		2.8		2.8		2.2	2.2	2.2	1.4	1.4	1.3	1.3
Ash        MAX	Electrode	%	0.5		0.5		0.5		0.5		0.5		0.5	0.5	0.5	0.5	0.5	0.5	0.5
	Nipple
:YB/T 4088,4089,4090  The above indicators comply with the national black metal industry standard YB/T 4088,4089,4090.

Specifications for RP, HP, UHP graphite electrodes with nipples:

RP	HP	UHP
Electrode: Bulk Density≥ 1.56g/cm3  Specific Resistivity≤ 8.5μm  Bending Strength≥ 10.0MPa  Elastic Modulus≤ 9.3GPa Thermal Expansion Coefficient≤ 2.7x10 -6/°C Ash≤ 0.5%   Nipple: Bulk Density≥ 1.68g/cm3  Specific Resistivity≤ 7.0μm  Bending Strength≥ 14.0MPa Elastic Modulus≤ 13.7GPa Thermal Expansion Coefficient≤ 2.5 x10 -6/°C Ash≤ 0.5%	Electrode: Bulk Density≥ 1.65g/cm3  Specific Resistivity≤ 6.5μm  Bending Strength≥ 12.0MPa  Elastic Modulus≤ 10.0GPa Thermal Expansion Coefficient≤ 2.2x10 -6/°C Ash≤ 0.3%   Nipple: Bulk Density≥ 1.74g/cm3  Specific Resistivity≤ 5.5μm  Bending Strength≥ 16.0MPa Elastic Modulus≤ 14.0GPa Thermal Expansion Coefficient≤ 2.0 x10 -6/°C Ash≤ 0.3%	Electrode: Bulk Density≥ 1.68g/cm3  Specific Resistivity≤ 5.8μm  Bending Strength≥ 16.0MPa  Elastic Modulus≤ 14.0GPa Thermal Expansion Coefficient≤ 1.9x10 -6/°C Ash≤ 0.2%   Nipple: Bulk Density≥ 1.76g/cm3  Specific Resistivity≤ 4.5μm  Bending Strength≥ 18.0MPa Elastic Modulus≤ 16.0GPa Thermal Expansion Coefficient≤ 1.4 x10 -6/°C Ash≤ 0.2%