Main technical properties of Constantan, New Constantan (Constantan wire), copper-manganese resistance alloy (GB/T1234-95 standard):
Performance / grade
Constantan 6J40
New Constantan 6J11
Manganese 6J12
F1 manganese copper 6J8
F2 manganese copper 6J13
Main chemical composition%
Ni
39-41
__
2-3
___
2-5
Mn
1-2
10.5-12.5
11-13
8-10
11-13
Cu
margin
margin
margin
margin
margin
other
__
Al:2.5-4.5
Fe:1.0-1.6
__
Si:1-2
__
Component applicable temperature ℃
5-500
5-500
5-45
10-80
10-80
Density g/m3
8.88
8.00
8.44
8.70
8.40
Resistivity.m, 20℃
0.48±0.03
0.48±0.03
0.46±0.03
0.35±0.05
0.44±0.04
Temperature Coefficient of Resistance
aí10-6/℃
+40
-40
+80
-80
+20
-3
+10
-5
40
Thermal electromotive force for copper
V/℃(0-100℃)
45
2
1
2
2
Elongation% (>0.5)
≥15
≥15
≥15
≥15
≥15
organization
Austenite
Austenite
Austenite
Austenite
Austenite
magnetic
Non-magnetic
Non-magnetic
Non-magnetic
Non-magnetic
Non-magnetic
