Model: GC-Type
made from high-density, high-purity silicon carbide, which is the most popular type of economical heating element capable of operating under hot and rigorous environments.
Main Specifications:
Maximum Working Temperature	1450oC
Order sample:	d=8mm,D=14mm, HZ=150mm, CZ=100mm, OL=350mm, Resistance=1.5ohms. Please specify as: dia8/14x150x350mmx1.5ohms
When you place order, please tell us following data:	a.Outer diameter (OD) b.Length of Hot zone (HZ) c.Length of Overall (OL) d.Resistance (at 1050C +/-50C)
Specification and Range of Resistance:
Dia(OD) (mm)	Length of hot zone(HZ)(mm)	Length of cold zone(CZ)(mm)	Overall Length(OL)(mm)	Range of Resistance(Ω) (ohms)
8	100-300	60-200	240-700	2.1-8.6
12	100-400	100-350	300-1100	0.8-5.8
14	100-500	150-350	400-1200	0.7-5.6
16	200-600	200-350	600-1300	0.7-4.4
18	200-800	200-400	600-1600	0.7-5.8
20	200-800	250-600	700-2000	0.6-6.0
25	200-1200	250-700	700-2600	0.4-5.0
30	300-2000	250-800	800-3600	0.4-4.0
35	400-2000	250-800	900-3600	0.5-3.6
40	500-2700	250-800	1000-4300	0.5-3.4
feature
The silicon carbide heating element is a kind of non-metal high temperature electric heating element. It is made of selected super quality green silicon carbide as main material, which is characterized by high-applied temperature, anti-oxidization, anti-corrosion, long service life ,little deformation, easy installation and maintenance. It is widely used in various high temperature electric furnaces and other electric heating devices ,such as in the industries of magnet, ceramics, powder metallurgy, glass, metallurgy and machinery etc.                                                                                                                                                          We adopt new production process of cold ends, so our SIC heating elements have excellent specific rate of heat zone resistance and cold end resistance, to avoide over-temperature of cold ends to damage the furnace body.
Antioxidant property of elements
The element start to being oxidized when heat to 800C in air,and a SiO2 protect film will be generated in surface of hot zone when temperature get to 1000-1300C ;cristobalite will be crystallized at 1300C; the protect film get to a certain thickness when the temperature get go 1500C which make the oxidation speed being very slowly to stable.if continue to heat to over 1627C ,the protect film will be damaged and oxidation speed will be more rapid evidently and make the element damaged earlier.                                                                                        Thought the element will be oxidized very slowly in course of application,it also will make the resistance increased following long time application,this phenonenon calls ageing ,in order to lower the ageing speed,we use special technology to spread a protect film on the surface of hot zone in the course of production,which enhance the Antioxidant property of element evidently and lengthen the service life.
Electric property of elements
SIC heating elements has rather large specific resistance .when it is heated in air and the surface temperature of the hot zone reaches 1050C,it's resistance rate is 600-1400 mm2/mm ,its resistance value changes as the temperature rises.From room-temperature to 800C is negative value ,over 800C is positive value nature curve.