550-800mm RP graphite electrode

Product Details

550-800mm RP graphite electrode,RP Graphite Electrode,Industrial Graphite Electrode,High Density Graphite Electrodes Manufacturer RP Graphite Electrode Industrial Graphite Electrode High Density Graphite Electrodes Manufacturer

Electric resistivity : 7.5-8.8

Bending strength:>=6.5

Elastic Modulus: <=9

Bulk density: 1.54-1.62

Ash: <=0.3

CTE: 2.20-2.60

Regular power graphite electrode is a graphite electrode with allowable current density lower than 17A/cm2. RP graphite electrode is mainly used in the ordinary power electric furnace for steelmaking, silicon smelting and yellow phosphorus refining etc.

Physical and Chemical Index of Hign Power Graphite Electrode:
Item		Unit	HP
			300～500	550～700
Electric Resistivity	Electrode	uΩ.m	5.5～6.8	5.5～7.0
	Nipple		4.0～5.5
Bending Strength	Electrode	MPa	≥10.0	≥8.5
	Nipple		≥18.0
Modulus of Elasticity	Electrode	GPa	≤13.0
	Nipple		≤15.0
Bulk Density	Electrode	g/cm3	1.62～1.70
	Nipple		1.72～1.80
Ash Content	Electrode	%	≤0.3
	Nipple
The Coefficient of Thermal Expansion(CTE)	Electrode	10-6/℃	1.80～2.20
	Nipple		1.50～1.80

High Power Graphite Electrode Current Carrying Capacity
Norminal Diameter		HP
Norminal Diameter		Current Carrying Capacity	Current Density
inch	mm	A	A/cm2
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
22	550	34000～53000	14～22
24	600	38000～58000	13～21
28	700	45000～72000	12～19
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	400	409	403	400	1800/2000/2200
18	450	460	454	451	1800/2000/2200
20	500	511	505	502	2000/2200/2400