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Precision alloy

6j40 precision alloy

Quality stability: implement the whole process quality monitoring, meticulous and all-round inspection

Reasonable price: efficient internal cost control, reduce expenditure and benefit customers

Fast delivery: advanced production line, sufficient stock, shortened delivery time

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6j40 (executive standard GB / T 2903-1998)

Chemical composition of 6j40:

*37329%*30967*30827;*38221;*30899*38192;*30789*3810838081;*38109
6J40(a)td>td>39td>1
20313;td>td>
(c)0.0200.020410.1020.1037327;0.5001

Physical properties of 6j40:

density8.9 g/cm3resistivity（20℃）0.48 μΩ·m
melting point1200-1260℃ thermal conductivity 19.6 W/（m·K）

6j40 annealed state, mechanical properties of the alloy at room temperature:

Alloy statetensile strengthσb (Mpa)

Elongatio

nA5 %

6J40≥280≥15

This alloy has the following properties:

6j40 alloy, also known as constantan, is a resistance alloy mainly composed of copper and nickel. Features: it has low resistance temperature coefficient, wide use temperature range (below 480 ℃), good processing performance and good welding performance

Metallographic structure of 6j40:

6j40 alloy is austenitic

The application fields of 6j40 include:

6j40 alloy is suitable for use in AC circuit, as precision resistance, sliding resistance, resistance strain gauge, etc., and can also be used for thermocouple and thermocouple compensation wire material

Products of our company:

Hot rolled bar of wire and wire strip


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