Nickel chrome electric heating wire

Specifications Nichrome wire

Size: 0.03mm-8mm

Electric Heating wire Ni80Cr20       nickel chrome electrical Heating Wire
1)high resistivity
2)used in explosives & fireworks industry
3)good quality
4)ROHS   nickel chrome electrical Heating Wire Nichrome is basically a name given to nickel-chromium resistance wires. It is a non-magnetic alloy which consists of 80 percent nickel and 20 percent by weight, and is widely used in heating elements because of its relatively high resistivity. Out of the constituents of nichrome, nickel is an element with the chemical symbol Ni and atomic number 28, whereas, chromium is an element with the symbol Cr and atomic number 24. Nickel is generally a silvery-white lustrous metal and chromium a steely-gray and hard metal. Nichrome, the alloy, is silvery-gray in color, resistant towards corrosion and has a high melting point. The ultimate tensile strength of nichrome is 105,000 PSI (Pounds per Square Inch), yield strength is around 50,000 PSI, and modulus of elasticity is 31 x 106 PSI. Following are some of the other physical properties of nichrome. Electrical Resistivity at room temperature: 1.0 x 10-6 to 1.5 x 10-6 ohm m Thermal Conductivity: 11.3 W/moC Magnetic Attraction: None Thermal Expansion Coefficient (20oC to 100oC): 13.4 x 10-6/oC Temperature Coefficient of Resistivity (25oC to 100oC): 100 ppm/oC Specific Gravity: 8.4 Density: 8400 kg/m3 Melting point: 1400oC Specific Heat: 450 J/kgoC Modulus of elasticity: 2.2 x 1011      

Ni-Cr and Ni-Cr- Fe Main performance of Ni-Cr and Ni-Cr-Fe electric heating alloys
Grade property performance		Cr20Ni80	Cr30Ni70	Cr15Ni60	Cr20Ni35	Cr20Ni30
% Main Chemical Composition	Ni	Balance	Balance	55.0-61.0	34.0-37.0	30.0-34.0
	Cr	20.0-23.0	28.0-31.0	15.0-18.0	18.0-21.0	18.0-21.0
	Fe	≤1.0	≤1.0	Balance	Balance	Balance
°C Max contimnous service Temp. of element		1200	1200	1150	1100	1100
Resistiuity		1.08	1.09	1.12	1	1.04
g/cm3 Density		8.4	8.4	8.2	7.9	7.9
KJ/M.h°C Thermal conductivity		60.3	60.3	45.2	43.8	43.8
Coefficient of linear expansion		18	18	17	19	19
Melting point≈ °C (approxi)		1400	1400	1390	1390	1390
% Elongation		≥20	≥20	≥20	≥20	≥20
Micrograhic structure		austenite	austenite	austenite	austenite	austenite
Magnetic property		nonmagnetic	nonmagnetic	nonmagnetic	nonmagnetic	nonmagnetic