Custom Manufactured Graphite Electrodes

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Graphite Electrodes

Higher density, lower thermal expansion, and higher electrical conductivity are just three of the characteristics that set our Custom Manufactured graphite electrodes apart from our competitors. Developed in our R&D facilities and designed to impart the qualities needed for the enhanced performance required by today's demanding industrial environments, Superior Graphite's graphitization technology incorporates multi-phase operations that begin by precisely blending and mixing petroleum cokes, extruding them into electrodes, and then exposing them to temperatures up to 3,000°C in our continuous longitudinal graphitization furnace. Machined to exact specifications, all electrodes undergo extensive QC controls to ensure uniform, consistent properties even over the largest production runs.

Optimized for maximum performance and minimal consumption and offered at competitive prices, our graphite electrodes have the proven ability to maximize steel productivity while reducing power and production costs. Available with diameters from 200-400 mm (8-16 inches), in lengths from 1,200-2,400 mm (48-96 inches), and in various grades, including UHP HCD, UHP LCD, HP, our graphite electrodes can be certified to all industry standards relevant to your application. For complete details about our graphite electrodes, please see the table below or call us today to discuss your requirements.

Our Custom Manufactured Graphite Electrode Capabilities

Process	Calcined Petroleum Cokes Milled and Screened for Consistency Blended with Binder Pitch Mixed at Controlled Temperatures Cooled and Extruded Baked at High Temperature to Form Carbon Impregnated with Pitch for Densification Re-Baked to Pyrolize the Pitch Carbon Electrode Converted to Graphite in Furnace Machined to Exact Specifications
Material	Graphite Petroleum Cokes
Graphitization	Carbon to Graphite
Industries / Applications	Steel Iron Metals Reclamation from Catalysts Fused Mineral (Zirconia/Silica) Waste Incineration In-Situ Vitrification of Underground Waste Sites Other Metallurgical
Furnace	Continuous Longitudinal Graphitization
Temperature	Up to 3000 °C
Characteristics	Consistent Uniform Properties Low Thermal Expansion High Electrical Conductivity Enhanced Performance
Benefits of Custom Manufactured Graphite Electrodes	Reduce Power and Production Costs Maximize Steel Productivity Optimized Performance and Minimal Consumption Product Consistency Extensive QC Controls to Ensure Uniform Properties Thorough Analysis of Furnace Specifications
Diameters	200 mm to 400 mm 8 to 16 in
Lengths	1200 to 2400 mm 48 to 96 in
Grades	UHP HCD UHP LCD HP Specialty Graphite
Typical Properties	Electrode Nominal Size & Weight Electrode Joining Systems Typical Properties Recommended Current Carrying Capacities Recommended Tightening Torque Proper Handling Guide
Additional Services	Labeled Packaged Shipped

Additional Information

Industry Focus	Energy Friction Lubrication Metallurgical Petroleum Clean Energy Solar And Others
Industry Standards	NEMA IEC JIS ASTM DIN ISO Mil-Spec

Electrode Nominal Size & Weight

Grade - HP
NOMINAL SIZE		3 TPI		4 TPI		M / F
mm	in.	kgs.	lbs.	kgs.	lbs.	kgs.	lbs.
200 x 1200	8 x 48	-	-	61	135	-	-
200 x 1500	8 x 60	-	-	79	175	75	165
200 x 1800	8 x 72	-	-	98	215	93	205
225 x 1500	9 x 60	102	225	-	-	-	-
225 x 1800	9 x 72	123	270	-	-	118	260
250 x 1500	10 x 60	127	280	127	280	123	270
250 x 1800	10 x 72	335	152	330	150	320	145
300 x 1500	12 x 60	181	400	181	400	-	-
300 x 1800	12 x 72	220	485	220	485	-	-
350 x 1500	14 x 60	238	525	238	525	-	-
350 x 1800	14 x 72	295	650	295	650	-	-
350 x 2100	14 x 84	340	750	-	-	-	-
400 x 1500	16 x 60	-	-	-	-	-	-
400 x 1800	16 x 72	-	-	-	-	-	-
400 x 2100	16 x 84	-	-	-	-	-	-
400 x 2400	16 x 96	-	-	-	-	-	-
Grade - UHP-LCD & UHP-HCD
NOMINAL SIZE		3 TPI		4 TPI		M / F
mm	in.	kgs.	lbs.	kgs.	lbs.	kgs.	lbs.
200 x 1200	8 x 48	-	-	68	150	64	140
200 x 1500	8 x 60	-	-	86	190	82	180
200 x 1800	8 x 72	-	-	102	225	98	215
225 x 1500	9 x 60	107	235	107	235	-	-
225 x 1800	9 x 72	127	280	127	280	123	270
250 x 1500	10 x 60	129	285	129	285	125	275
250 x 1800	10 x 72	160	350	160	350	154	340
300 x 1500	12 x 60	191	420	191	420	-	-
300 x 1800	12 x 72	229	505	229	505	-	-
350 x 1500	14 x 60	256	565	256	565	-	-
350 x 1800	14 x 72	306	675	306	675	-	-
350 x 2100	14 x 84	352	775	352	775	-	-
400 x 1500	16 x 60	324	715	324	715	-	-
400 x 1800	16 x 72	399	880	399	880	-	-
400 x 2100	16 x 84	454	1000	454	1000	-	-
400 x 2400	16 x 96	544	1200	544	1200	-	-

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Electrode Joining Systems

3 TPI TAPERED CONNECTING PIN
Nominal Diameter of Electrode		Diameter (Maximum)		Length (Maximum)		Average Weight of Pin		Industrial Standard
mm	in.	mm	in.	mm	in.	kgs.	lbs.
225	9	139.7	5.5	203.2	8	4	9	NEMA	JIS	IEC
250	10	139.7	5.5	203.2	8	4	9	NEMA	-	-
250	10	155.58	6.125	220.13	8.667	5.5	12	NEMA	JIS	IEC
300	12	155.58	6.125	220.13	8.667	5.5	12	NEMA	-	-
300	12	177.17	6.975	270.93	10.667	8.6	19	NEMA	JIS	IEC
350	14	177.17	6.975	270.93	10.667	8.6	19	NEMA	-	-
350	14	215.9	8.5	304.8	12	14.6	32.1	NEMA	JIS	IEC
400	16	215.9	8.5	304.8	12	14.6	32.1	NEMA	-	-
400	16	241.3	9.5	339.73	13.375	20.3	44.8	-	-	IEC
400	16	241.3	9.5	355.6	14	21.3	47	NEMA	JIS	IEC
4 TPI TAPERED CONNECTING PIN
Nominal Diameter of Electrode		Diameter (Maximum)		Length (Maximum)		Average Weight of Pin		Industrial Standard
mm	in.	mm	in.	mm	in.	kgs.	lbs.
200	8	122.24	4.813	177.8	7	2.7	5.9	NEMA	JIS	IEC
225	9	139.7	5.5	177.8	7	3.5	7.8	-	-	IEC
225	9	139.7	5.5	203.2	8	4.1	9	-	JIS	-
250	10	152.4	6	190.5	7.5	4.8	10.5	-	-	IEC
300	12	177.8	7	215.9	8.5	7.4	16.2	-	-	IEC
350	14	203.2	8	254	10	11.4	25	-	-	IEC
350	14	203.2	8	304.8	12	14.6	32.1	-	-	IEC
350,400	14,16	222.25	8.75	355.6	14	18.2	40	-	-	IEC
400	16	222.25	8.75	304.8	12	21.3	47	-	-	IEC
MALE / FEMALE JOINT
Nominal Diameter of Electrode		Diameter (Maximum)		Length (Maximum)				Industrial Standard
mm	in.	mm	in.	mm	in.
200	8	119.06	4.688	122.24	4.813			NEMA	-	IEC
225	9	131.76	5.188	134.94	5.313			NEMA	-	IEC
250	10	144.46	5.688	147.64	5.813			NEMA	-	IEC

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Typical Properties

PROPERTY	UNITS	UHP-HCD	UHP-LCD	HP	Pins
Apparent Density	Grams/cm3	1.70 - 1.77	1.69 - 1.75	1.66 - 1.72	1.77 - 1.82
Specific Electrical Resistance (longitudinal)	Micro-ohm - meters	5.0 - 6.1	5.2 - 6.8	6.8 - 8.9	3.6 - 5.6
Flexural Strength (4 - point loading)	Kg/cm2	90 - 170	90 - 170	60 - 140	180 - 270
Coefficient of Thermal Expansion (PATE)	X 10 -6/°C at 25 to 100°C	0.3 - 0.6	0.6 - 0.9	0.3 - 1.1	0.1 - 0.4

The values listed above are typical for the corresponding grade. They should not be considered a specification or a guarantee.

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Recommended Current Carrying Capacities

	Peak Secondary Current (KA)
	EAF Melting Surface			Ladle Metallurgy Furnace
Nomical Diameter - mm (inches)	HP	UHP-LCD	UHP-HCD	HP	UHP-LCD	UHP-HCD
200 (8)	up to 7	5 to 9	7 to 14	up to 8	6 to 10	8 to 15
225 (9)	up to 9	6 to 12	9 to 16	up to 10	7 to 13	10 to 17
250 (10)	up to 11	7 to 14	11 to 18	up to 13	9 to 16	13 to 20
300 (12)	up to 15	9 to 20	15 to 29	up to 18	12 to 23	18 to 32
350 (14)	up to 22	14 to 28	22 to 37	up to 25	17 to 31	25 to 40
400 (16)	up to 28	22 to 36	32 to 46	up to 32	26 to 40	36 to 50

ARK UHP and HP grades are available for all applications, including EAF melting, ladle metallurgy, vacuum de-gassing and other specialized arc furnace applications. The secondary current ranges listed above are for reference only and results may vary depending on other operating conditions. Superior Graphite recommends a review from our technical service staff prior to grade selection to ensure the optimum performance.

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Recommended Tightening Torque

DIAMETER	TORQUE
	ft. - lbs.	kg - m	N - M
8" (200 mm)	180	25	250
9" (225 mm)	260	35	350
10" (250 mm)	330	45	450
12" (300 mm)	480	65	650
14" (350 mm)	630	85	850
16" (400 mm)	810	110	1100

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Proper Handling Guide

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