700-800mm UHP graphite electrode

Product Details

700-800mm UHP graphite electrode,UHP Graphite Electrodes,Oxidation Resistance Graphite Electrode,UHP Graphite Electrodes Manufacturer UHP Graphite Electrodes Oxidation Resistance Graphite Electrode UHP Graphite Electrodes Manufacturer

Electric resistivity : 4.5-5.8

Bending strength: >=10.0

Elastic Modulus: <=14

Bulk density:1.68-1.74

Ash: <=0.3

CTE: 1.10-1.50

Ultra high power graphite electrode is a graphite electrode with allowable current density greater than 25A/cm2 . UHP graphite electrode mainly used in ultra-high power steelmaking electric arc furnace.

Physical and Chemical Index of Ultra high Power Graphite Electrode
Item		Unit	UHP
			300～500		550～600		700～800
Electric Resistivity	Electrode	uΩ.m	4.6～6.2		4.5～6.0		4.5～5.8
	Nipple		3.5～5.0		3.4～4.5		3.3～4.3
Bending Strength	Electrode	MPa	≥10.5		≥10.0		≥10.0
	Nipple		≥20.0		≥22.0		≥23.0
Modulus of Elasticity	Electrode	GPa	≤14.0		≤14.0		≤14.0
	Nipple		≤20.0		≤22.0		≤22.0
Bulk Density	Electrode	G/cm3	1.66～1.73		1.68～1.74
	Nipple		1.75～1.82		1.78～1.85
Ash Content	Electrode	%	≤0.3
	Nipple
The Coefficient of Thermal Expansion(CTE)	Electrode	10-6/℃	1.20～1.50		1.10～1.50
		Nipple		1.10～1.40		1.00～1.30

UHP Graphite Electrode Current Carrying Capacity
Norminal Diameter		UHP
Norminal Diameter		Current Carrying Capacity	Current Density
inch	mm	A	A/cm2
12	300	15000～22000	20～30
14	350	20000～30000	20～30
16	400	25000～40000	19～30
18	450	32000～45000	19～27
20	500	38000～55000	18～27
22	550	45000～65000	18～27
24	600	50000～75000	18～26
28	700	70000～120000	18～25
32	800	／	／

Tolerance of Graphite Electrode Diameter and Length（mm)
Nominal Diameter		Actural diameter			Length
in	mm	max	min	Black surface min	Length
12	300	307	302	299	1800/2000
14	350	358	352	349	1800/2000/2200
16