ThermoPerm | HB SPEICAL ALLOY

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

GB	ГОСТ	ASTM	UNS	DIN	W.Nr.	NF	BS	JIS	SS
1J30	30НХГ	–	–	ThermoPerm	–	–	MutemP	MS-1	–
1J31	31НХ	–	–	–	–	–	–	MS-2	–
1J32	32НХ	–	–	–	–	–	–	–	–
1J33	33НХН30Ю	–	–	–	–	–	–	–	–
1J38	Н38Х14	Permalloy D	–	–	–	–	Hulo 36	TMO-1	–

Chemical Composition, %

Alloy	C	Si	Mn	P	S	Ni	Cr	Al	Fe
1J30	≤0.04	≤0.30	≤0.40	≤0.02	≤0.02	29.5-30.5	–	–	Rest
1J31	≤0.04	≤0.30	≤0.40	≤0.02	≤0.02	30.5-31.5	–	–	Rest
1J32	≤0.04	≤0.30	≤0.40	≤0.02	≤0.02	31.5-32.5	–	–	Rest
1J33	≤0.05	0.30-0.60	0.30-0.60	≤0.02	≤0.02	32.8-33.8	–	1.00-2.00	Rest
1J38	≤0.05	0.15-0.30	0.30-0.60	≤0.02	≤0.02	37.5-38.5	12.5-13.5	–	Rest

Magnetic Properties

Alloy	Magnetic induction under different temperature at magnetic field intensities 8000A/m, B T					Difference in magnetic induction, T
Alloy	-20℃	20℃	40℃	60℃	80℃	B-20℃-B20℃	B20℃-B40℃	B20℃-B80℃
1J30	0.40-0.60	0.20-0.45	–	0.02-0.13	–	–	–	–
1J31	0.60-0.85	0.40-0.65	–	0.15-0.45	–	–	–	–
1J32	0.80-1.10	0.60-0.95	–	0.40-0.75	–	–	–	–
1J33	–	0.40-0.70	–	–	0.10-0.40	–	–	0.22-0.42
1J38	0.25-0.42	0.05-0.24	0.015-0.12	–	–	0.16-0.24	0.035-0.15	–

Typical Physical Constants and Mechanical Properties

Density, g/cm3	Melting Range, ℃	Tensile Strength, MPa	Yield Strength, MPa	Elongation, %
8.1	–	450	–	40

Available Products and Specifications

Rod, Bar, Forgings	GB/T 14986-2008
Plate, Sheet, Strip	GB/T 14986-2008
Pipe, Tube	GB/T 14986-2008
Fitting	GB/T 14986-2008, GB/T 15005-1994
Wire, Welding Product	GB/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.