powerful electrode (Qingdao Duratight Sealing Product Co., Ltd.,China) ;Minerals, Metals & Materials

Qingdao Duratight Sealing Product Co., Ltd.

Post Date:	Oct 26, 2007
Expiry date:	Oct 26, 2008

Detailed Selling Lead Description

Product description
Duratight high power graphite electrode is manufactured strictly as request of the industrial standard YB/T4089-2000, and many of its physical and chemical index are better than the regular value of the standard YB/T4089-2000.
Technical index of high power graphite electrode
Item		Unit	Nominal Diameter (mm)
			Industry Standard YB/T4089-2000		Typical Values
			200~400	450~550	300~400	450~550
Electric Resistivity	Electrode	μ Ωm	≤ 7	≤ 7.5	5.0~6.6	5.4~6.8
Electric Resistivity	Nipple	μ Ωm	≤ 6.5	≤ 6.5	4.0~5.0	4.0~5.0
Bending	Electrode	M pa	≥ 10.5	≥ 9.8	≥11.0	≥11.0
Strength	Nipple	M pa	≥ 14.0	≥ 14.0	≥16.0	≥16.0
Elastic	Electrode	G pa	≤ 12.0	≤ 12.0	≤11.0	≤11.0
Modulus	Nipple	G pa	≤ 16.0	≤ 16.0	≤15.0	≤15.0
Bulk	Electrode	g/cm3	≥ 1.60	≥ 1.60	1.63~1.70	1.63~1.70
Density	Nipple	g/cm3	≥ 1.70	≥ 1.70	1.73~1.80	1.73~1.80
Ash	Electrode	%	≤0.3	≤ 0.3	≤0.3	≤0.3
Ash	Nipple	%	≤0.3	≤ 0.3	≤0.3	≤0.3
CTE	Electrode	10^-6/	≤2.4	≤2.4	1.8~2.2	1.8~2.2
(100~600)	Nipple	10^-6/	≤ 2.2	≤2.2	1.5~1.8	1.5~1.8
Recommended Current Carrying Capacity
Nominal Diameter		Industry Standard YB/T4089-2000		Typical Values
		Current Carrying Capacity	Current Density	Electrical Arc Furnace		Ladle Refining Furnace
		Current Carrying Capacity	Current Density	Current Carrying Capacity	Current Density	Current carrying capacity	Current Density
Inch	MM	A	A/CM²	A	A/CM²	A	A/CM²
12	300	13000~17400	17~24	13000~17500	18~25	15000~21000	21~29
14	350	17400~24000	17~24	17500~24500	18~25	20000~28000	21~29
16	400	21000~31000	16~24	21500~32000	17~25	24000~35000	19~28
18	450	25000~40000	15~24	26000~40500	16~25	29000~45000	18~28
20	500	30000~48000	15~24	32000~50000	16~25	34000~54000	17~27
22	550	35000~55000	14~22	37000~57000	15~23	40000~62000	16~25

powerful electrode

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