Nippon Carbon Artificial Graphite Electrodes

Manufacturer: Nippon Carbon Co., Ltd.

Specifications

Category	Tolerance on Diameter (mm)			Tolerance on Length (mm)			G.E. Standard Weight (kg) UHP	Nipple Weight (kg)
Category	Nominal Diameter	Maximum	Minimum	Nominal Diameter	Maximum	Minimum	G.E. Standard Weight (kg) UHP	3TPI	4TPI
14T	350	358	352	1,800	1,900	1,700	305	14.3	11.3
14T	350	358	352	2,400	2,525	2,275	400	14.3	11.3
16T	400	409	403	1,800	1,900	1,700	395	20.3	15.6 17.6(L)
16T	400	409	403	2,400	2,525	2,275	553	20.3	15.6 17.6(L)
18T	450	460	454	1,800	1,900	1,700	505	28.0 33.2(L)	18.1 20.5(L)
18T	450	460	454	2,400	2,525	2,275	665	28.0 33.2(L)	18.1 20.5(L)
20T	500	511	505	1,800	1,900	1,700	617	35.3 41.4(L)	27.6 33.0(L)
				2,100	2,225	1,975	717
				2,400	2,525	2,275	822
				2,700	2,900	2,550	950
22T	550	562	556	2,100	2,225	1,975	865	35.3	34.8 41.4(L)
				2,400	2,525	2,275	990
				2,700	2,900	2,550	1,135
24T	600	613	607	2,100	2,225	1,975	1,035	—	39.8 48.3(L)
				2,400	2,525	2,275	1,180
				2,700	2,900	2,550	1,360
26T	650	663	659	2,400	2,525	2,275	1,370	—	74.0(L)
26T	650	663	659	2,700	2,900	2,550	1,570	—	74.0(L)
28T	700	714	710	2,400	2,525	2,275	1,576	—	81.5(L)
28T	700	714	710	2,700	2,900	2,550	1,840	—	81.5(L)
30T	750	765	761	2,700	2,900	2,550	2,050	—	106.0(L)
32T	800	816	810	2,700	2,900	2,550	2,448	—	128.0(L)

TPI	Category		Nipple (mm)		Socket (mm)			Effective Diameter (mm)	Pitch (mm)
TPI	New Name	Old Name	Maximum Diameter A	Length L	Core Diameter D	Depth S	Thread Length T	B	P
3 TPI	215T3N	14T3	215.90	304.80	207.47	158.40	154.40	211.69	8.467
	241T3N	16T3	241.30	338.70	232.87	175.30	171.30	237.09	8.467
	273T3N	18T3-1	273.05	355.60	264.62	183.80	179.80	268.84	8.467
	241T3N	18T3-2	241.30	338.70	232.87	175.30	171.30	237.09	8.467
	298T3N	20T3-1	298.45	372.60	290.02	192.20	188.20	294.24	8.467
	273T3N	20T3-2	273.05	355.60	264.62	183.80	179.80	268.84	8.467
	298T3N	22T3-2	298.45	372.60	290.02	192.20	188.20	294.24	8.467
4 TPI	298T4N	22T4	298.45	355.60	292.13	183.80	179.80	295.29	6.350
	298T4L	22T4L	298.45	457.20	292.13	234.60	230.60	295.29	6.350
	317T4N	24T4	317.50	355.60	311.18	183.80	179.80	314.34	6.350
	317T4L	24T4L	317.50	457.20	311.18	234.60	230.60	314.34	6.350
	355T4L	26T4L	355.60	558.80	349.28	285.40	281.40	352.44	6.350
	374T4L	28T4L	374.65	558.80	368.33	285.40	281.40	371.49	6.350
	406T4N	30T4L	406.40	609.60	400.08	310.80	306.80	403.24	6.350
	—	32T4L	431.80	635.00	428.64	323.50	319.50	431.80	6.350

		AC Arc Furnace		DC Arc Furnace
Nominal Diameter		350 ∼ 450 mm 14″ ∼ 18″	500 ∼ 700 mm 20″ ∼ 28″	700 ∼ 800 mm 28″ ∼ 32″
Characteristic Item	Unit	U H P	U H P	U H P
Bulk Density	g/cm³	1.65 ∼ 1.79	1.65 ∼ 1.76	1.67 ∼ 1.77
Specific Resistance	µΩm	4.3 ∼ 5.8	4.3 ∼ 5.8	4.3 ∼ 5.8
Young’s Modulus	GPa	9.9 ∼ 18.0	8.5 ∼ 15.0	8.5 ∼ 15.0
	kN/mm²	9.9 ∼ 18.0	8.5 ∼ 15.0	8.5 ∼ 15.0
	kgf/mm²	990 ∼ 1800	850 ∼ 1500	850 ∼ 1500
Bending Strength	MPa	10.0 ∼ 18.0	8.5 ∼ 15.0	9.0 ∼ 15.0
	N/cm²	1000 ∼ 1800	850 ∼ 1500	900 ∼ 1500
	kgf/cm²	100 ∼ 180	85 ∼ 150	90 ∼ 150
Coefficient of Thermal Expansion	×10⁻⁶/°C	1.1 ∼ 1.6	1.1 ∼ 1.6	1.1 ∼ 1.5
Real Density	g/cm³	2.20 ∼ 2.23	2.20 ∼ 2.23	2.20 ∼ 2.23
Total Porosity	%	19 ∼ 26	19 ∼ 26	19 ∼ 26
Ash Content	%	Lower than 0.2	Lower than 0.2	Lower than 0.2