High Resistivity for Resistors Karma Wire

• Customization: Available
• Application: Tiny Resistors
• Alloy: Nicr
• Model NO.: Karma
• Type: Nicr Wire
• Powder: Not Powder
• Condition: Bright, Soft
• Product Name: High Resistivity for Resistor Karma Wire
• Size: 0.01mm-2.0mm
• Brand: Ualloy
• Transport Package: Carton, Case, Pallet
• Specification: GB/T 1234-2012
• Trademark: Ualloy
• Origin: Hangzhou China
• HS Code: 75052200
• Production Capacity: 1000kgs/Month

Product Description

High resistivity for resistor karma wire

Karma alloy is made up of copper, nickel, Aluminum and Iron as the main components. The resistivity is 2~3 times higher than Manganin. It has lower temperature coefficient of resistance(TCR), lower thermal EMF versus copper, good permanence of resistance for a long period of time and strong anti-oxidation. Its working temperature range is wider than Manganin (-60~300ºC). It is suitable for making fine precision resistance elements and strain foil.                           
 
Chemical Content(%)

Grade	C	Si	Mn	P	S	Ni	Al	Fe	Cr
Karma	≤0.04	≤0.20	0.5~1.05	≤0.010	≤0.010	Bal.	2.7~3.2	2.0~3.0	19.0~21.5

 
Physical Properties

Grade	Density(g/cm3)	EMF vs Pt(0-100ºC)μv/ºC	Max using Temp (ºC)	Volume resistivity(μΩ.m)	PPM value (×10-6/ºC)
Karma	8.1	≤2.5	≤300	1.33±8%(20ºC)	≤±30(20ºC)