Thermo-Magnetic Compensation Alloys

1J30, 1J31, 1J32, 1J33, 1J38

Thermo-Magnetic Compensation Alloy is a kind of alloy with low Curie temperature between 25℃-200℃. Among them, 1J38 contains about 13% Cr which reduces the Curie temperature and the magnetic induction intensity, but also improves the resistivity and hardness of the alloy. Alloy Curie temperature and magnetic properties of sensitivity to the composition fluctuation than iron nickel binary alloy is low, which is easy to control, and there is no irreversible change in low temperature, the temperature range for -40℃-60℃, it is mainly used for electricity meter and auto instrument components. The properties of the cold-rolled alloy can be further adjusted in a small range by heat treatment at different temperatures above 300℃.

Equivalent Grades

GBГОСТASTMUNSDINW.Nr.NFBSJISSS
1J3030НХГThermoPermMutemPMS-1
1J3131НХMS-2
1J3232НХ
1J3333НХН30Ю
1J38Н38Х14Permalloy DHulo 36TMO-1

Chemical Composition, %

AlloyCSiMnPSNiCrAlFe
1J30≤0.04≤0.30≤0.40≤0.02≤0.0229.5-30.5Rest
1J31≤0.04≤0.30≤0.40≤0.02≤0.0230.5-31.5Rest
1J32≤0.04≤0.30≤0.40≤0.02≤0.0231.5-32.5Rest
1J33≤0.050.30-0.600.30-0.60≤0.02≤0.0232.8-33.81.00-2.00Rest
1J38≤0.050.15-0.300.30-0.60≤0.02≤0.0237.5-38.512.5-13.5Rest

Magnetic Properties

AlloyMagnetic induction under different temperature at magnetic field intensities 8000A/m, B TDifference in magnetic induction, T
-20℃20℃40℃60℃80℃B-20℃-B20℃B20℃-B40℃B20℃-B80℃
1J300.40-0.600.20-0.450.02-0.13
1J310.60-0.850.40-0.650.15-0.45
1J320.80-1.100.60-0.950.40-0.75
1J330.40-0.700.10-0.400.22-0.42
1J380.25-0.420.05-0.240.015-0.120.16-0.240.035-0.15

Typical Physical Constants and Mechanical Properties

Density, g/cm3Melting Range, Tensile Strength, MPaYield Strength, MPaElongation, %
8.145040

Available Products and Specifications

Rod, Bar, ForgingsGB/T 14986-2008
Plate, Sheet, StripGB/T 14986-2008
Pipe, TubeGB/T 14986-2008
FittingGB/T 14986-2008, GB/T 15005-1994
Wire, Welding ProductGB/T 14986-2008

Features

Thermo-Magnetic Compensation Alloy’s outstanding characteristic is that the magnetic induction value will linear reduce with the increase of temperature (below Curie Point).

Applications

Thermo-Magnetic Compensation Alloy is usually used for magnetic shunt temperature, compensation element or temperature sensing element in traveling wave tube, magnetron, wind direction meter, voltage regulator, odometer, speedometer, gasoline meter, watt hour meter, etc.