METALLIC SOFT MAGNETIC ALLOYS

Item	Code	Main composition	Features	Main applications	Remarks
Expansion alloys	4J29, 4J32, 4J36	Ni, Fe, Cr, Co etc.	Thermal expansion coefficient comparable to that of hard glass	Thermostats, balance wheels for watches, metal-to-glass seals, bimetals, Cathode Ray Tubes; monitors, TVs, shadow masks and frames etc.	Average line expansion coefficient, 10 / ^oC:(4.6～5.2) 20～400 ^oC; 5.1～5.5 (20～450 ^oC) See the detailed datasheet
Cold rolled Strips of hysteresis alloys	2J4, 2J7, 2J9, 2J10, 2J11, 2J12, 2J51, 2J52, 2J53	Fe, Co, V etc.	Good hysteresis behavior at medium and high working field.	Hysteresis motor and electromagnetic clutch etc	See the detailed datasheet
Grain-oriented silicon steel strips	DG3, DG4, DG5, DG6	Fe, Si etc.	High saturation induction, Loss iron Loss	Transformer cores such as BOD type; ED, CD type; XED, XCD type C; BCD type C; 3-phase E cores and other usage.	See the detailed datasheet
High saturation magnetic induction soft magnetic alloys	1J22, G1J21, G1J27	Co, Fe, V etc.	High saturation, high saturated magnetostriction, high Curie temperature and mechanical strength.	Common and superconductor magnets; electromagnets; small scale power transformer; chokes; magnetic amplifiers; magnetic shielding; rotors or stators; phone membranes etc.	2.20T~2.35T at 8000 A/m field. See the detailed datasheet
Iron-aluminum soft magnetic alloys	1J12	Fe, Al etc.	High resistivity, low specific gravity	Motors and clutches	See the detailed datasheet
Corrosion-resisting soft magnetic alloys	1J36, 1J116, 1J117, G1J130, G1J170	Fe, Ni, Cr, Mn etc.	High saturation, low residual, and high corrosion resistance in damp, salty and seawater, or hydrazine surroundings.	Electromagnetic components or magnetic conductor of control unit, armature, electromagnet, valve working in damp and corrosive environment	See the detailed datasheet
Fe-Ni High Permeability Soft magnets	1J50, 1J79, 1J85	Fe, Ni etc.	High permeability	Intermediate field transformers, relays; clutches; chokes; cores, poles in circuit; phone membranes; Creepage switches; safety switches; magnetic shielding; gyroscopes; motors.	See the detailed datasheet
High Squareness soft magnetic alloys	1J34, 1J51	Fe, Ni etc.	High squareness of the hysteresis loop up to 0.87	Small and medium power magnetic amplifiers; pulse transformers; magnetic modulators; contactless relays; contacting rectifiers; chokes; amplitude modulators and transductors	See the detailed datasheet
Magnetic Thermal compensation alloys	1J30, 1J31, 1J32, 1J33, 1J38	Fe, Ni etc.	Induction changes dramatically as the surrounding temperature changes	Traveling wave tubes; magnetrons; magnetic sub-circuit compensating elements in instruments	See the detailed datasheet
Amorphous Brazing solder	NAC－RW－Ni-301	Cu, P, Ni, Sn etc.	Uniform without multi-phases. High purity due to its simple manufacturing process and strict starting material selection.	As a substitute of sliver solder, the amorphous solder is widely used in soldering of precision instruments, circuit board etc.	See the detailed datasheet
Iron based nanocrystalline Strips		Fe, Ni etc.	High saturated induction, high permeability, low coercivity, low loss, good stability, and good wearing and eroding resistance	In many high frequency (20 kHz –100 kHz) switch-mode power supply applications as primary power, control, filter, and storage inductors, reactors, magnetic amplifiers, saturated reactors, EMC filter common and different mode inductors and ISDN Minitype isolating transformers.	See the detailed datasheet
Cobalt based amorphous strips		Co, Ni, Fe etc	Highest permeability, lower Bs and coercivity, low loss, excellent wearing and eroding resistance, good thermal and aging stability and shocking resistance.	Iin high frequency transformers, filter inductors and magnetic amplifiers etc. The frequency can be up to 200kHz. It can also be used in applications such as ISDN insolating transformers, common mode inductors, and thief proof sensors in supermarket and library, and video reading heads.	See the detailed datasheet
Iron based amorphous strips		Fe, Ni etc	Highest saturation induction, high permeability, and low coercivity, low loss (1/3 ~1.5 of that of silicon steel), low exciting current and good thermal and time stability.	The amorphous can be used as core material for all kind of low frequency distribution transformer, intermediate frequency (50Hz~10kHz) transformer, and reactor of switch mode power supply (frequency up to 50 KHz.	See the detailed datasheet

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Expansion alloys

Applications:

Thermostats, balance wheels for watches, metal-to-glass seals, bimetals, Cathode Ray Tubes; appliance like electric irons, toasters, gas cookers fire safety cutoffs, monitors, TVs, shadow masks and frames.

Alloy Grade	Shape	Average line expansion coefficient, 10 / ^oC
4J29	Bar, strip and casting	20～100 ^oC	20～150 ^oC	20～400 ^oC	20～450 ^oC
		—	—	4.6～5.2	5.1～5.5
4J32		≤1.0	—	—	—
4J36		≤1.5	≤1.9*	—	—

Note: 1. Standard YB/T5231-93 and YB/T5241-93.

2. “*” Follow manufacturer’s standard.

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Cold rolled Strips of hysteresis alloys

Applications:

Hysteresis motor and electromagnetic clutch etc.

Grade	Hysteresis Performance
	Hμ, Oe	Bμ, Gs	Pμ, erg/cm	Kμ
			≥
2J4	50～65	13000～16000	1.5×105	0.62
2J7	80～120	10000～13000	1.9×105	0.61
2J9	110～150	9000～12500	2.2×105	0.59
2J10	180～230	9000～12000	3.0×105	0.58
2J11	200～260	9000～12000	3.5×105	0.57
2J12	250～350	8000～11000	4.0×105	0.56
2J51	35～50	12000～16000	1.0×105	0.58
2J52	60～90	9000～13500	1.1×105	0.50
2J53	80～150	6000～9000	1.0×105	0.45

Note:

1. Above data is for strip’s thickness of 0.20～0.80 mm.

2. Standard per GB/T14988-94

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Grain-oriented silicon steel strips

Applications:

BOD type standardized cores per SJ1760-81 Standard;

ED, CD type standardized cores per SJ103-77 Standard;

XED, XCD type C shape standardized cores per SJ1263-77 Standard;

BCD type C shape standardized cores per SJ1761-81 Standard;

3-phase E shape standardized cores per GB4596-84 Standard;

Custom non-standardized cores

Grade	Thickness (mm)	Iron Loss, W/Kg				Induction, T		Coercivity, A/m
		P1.0/400	P1.5/400	P1.0/1000	P0.5/3000	B50	B1000	Hc
		≤				≥		≤
DG3	0.025	—	—	—	35	—	1.60	60
DG3	0.03	—	—	—	35	—	1.65	45
DG4		—	—	—	30	—	1.70	40
DG4	0.05	—	16.0	22.0	—	0.90	1.70	32
DG5		—	15.0	20.0	—	1.05	1.75	32
DG6		—	14.5	19.0	—	1.10	1.75	32
DG4	0.08 0.10	—	16.0	—	—	1.00	1.70	26
DG5		—	15.0	—	—	1.05	1.75	26
DG6		—	14.5	—	—	1.20	1.80	26
DG4	0.15	—	18.0	—	—	1.00	1.75	26
DG5		—	17.0	—	—	1.10	1.75	26
DG6		—	16.5	—	—	1.13	1.75	26

Note: Standard per GB11255-89.

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High saturation magnetic induction soft magnetic alloys

Applications:

Common and superconductor magnets; electromagnets; small scale power transformer; chokes; magnetic amplifiers; magnetic shielding; rotors or stators; phone membranes; magnetostriction transductors; whips in ultrasonic generators; power transformers in airplane; circuit pole and print heads.

Grade	Shape	Induction at different applied field (A/m), T								Coercivity, A/m
		B400	B800	B1600	B2400	B4000	B5000	B8000	B10000	Hc
		≥								≤
1J22	Strip	1.60	1.80	2.00	2.10	2.15	—	2.20	—	128
	Bar	—	—	—	2.05	2.15	—	2.20	—	144
G1J21*	Strip	1.95	2.05	2.15	2.25	2.35	—	—	—	72
	Bar	1.90	2.00	2.10	2.20	2.30	—	2.35	—	80
G1J27*	Strip	—	—	—	1.80	—	1.95	—	2.10	190

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Iron-aluminum soft magnetic alloys

Applications:

Motors and clutches.

Grade	Shape	Level	Permeability at 0.8A/m applied field, mH/m	Max. Permeability, mH/m	Induction at various fields( A/m) , T		Coercivity (saturated condition), A/m	Residual Induction, T
			μ0.8	μm	B2400	B3200	Hc	Br
			≥				≤
1J12	Strip	—	3.10	31.3	1.20	1.30	12	0.5
	Bar	Ⅰ*	2.50	12.5	—	1.30	16	0.6
		Ⅱ*	—	35.0	—	1.34	10	—

1. Above data is for strip thickness 0.20～1.00 mm or bar diameter 10～100 mm.

2. Per GB/T15004-94 Standard.

3.“*” Follow manufacturer’s standard.

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Corrosion-resisting soft magnetic alloys

Applications:

Mainly used as electromagnetic components working in oxidation and hydrazine media, or magnetic conductor of all kinds of control unit, armature, electromagnet, wind valve, hydraulic valve working in damp and corrosive environment.

Grade	Shape	Level	Induction at various applied fields (A/m) , T							Coercivity, A/m	Electrical resistance μΩ·cm
			B240	Br240	B500	B800	B3200	Br3200	B5000	Hc	ρ
			≥	≤	≥	≥	≥	≤	≥	≤
1J36	Bar	—	0.80	0.30	—	—	1.20	0.35	—	16	80
1J116		—	1.00	—	—	1.10	1.30	—	—	80	44
1J117		Ⅰ	0.90	—	—	1.00	1.25	—	—	80	--
		Ⅱ*	1.00	—	—	1.15	1.30	—	—	50
G1J130*		—	—	—	1.00	1.10	—	—	1.40	50	80
G1J170*		—	—	—	0.95	1.05	—	—	1.35	50	82

Note:

1. Above data is for bar diameter of 10～100 mm.

2. Per GB/T15004-94 Standard.

3. “*” Follow manufacturer’s standard.

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Iron Nickel soft magnetic alloys

1． High Permeability soft magnetic alloys

Applications: All kind of Intermediate field transformers, relays; clutches; chokes; cores, poles in circuit; phone membranes; Creepage switches; safety switches; magnetic shielding; gyroscopes; motors.

Grade	Shape	Level	Thickness or Diameter	Permeability (at field 0.4A/m for 1J50 and 0.08 A/m for 1J79, 1J85) μ0.4, μ0.08	Max. Permeability μm	Coercivity (Saturated) Hc	Saturation Induction Bs
			mm	mH/m		A/m	T
				≥		≤
1J50	Strip	Ⅱ	0.10～0.19	3.8	43.8	12	1.5
			0.20～0.34	4.4	56.3	10.4
			0.35～0.50	5.0	65	8.8
			0.51～1.00	5.0	50	10
			1.10～2.50	3.8	44	12
		Ⅲ	0.05～0.20	12.5	75	4.8	1.52
	Bar	—	10～100	3.1	31.3	14.4	1.5
1J79	Strip	Ⅱ	0.005	15	75	4.8	0.75
			0.01	20	110	3.2
			0.02～0.04	25	125	2.4
			0.05～0.09	25	150	1.6
			0.10～0.19	28	190	1.2
			0.20～0.34	31	250	1.2
			0.35～1.00	38	280	1.0
			1.10～2.50	31	230	1.2
		Ⅲ	0.01	25	150	2.4	0.73
			0.02～0.04	31	190	1.6
			0.05～0.09	38	250	1.2
			0.10～0.19	38	250	1.2
			0.20～0.34	38	280	1.0
			0.35	44	310	1.0
	Bar	—	10～100	25	125	2.4	0.75
1J85	Strip	Ⅱ	0.02～0.04	37.5	137.5	2.4	0.70
			0.05～0.09	50	175	1.6
			0.10～0.19	62.5	225	1.2
			0.20～0.34	75	250	1.0
			0.35	68.8	325	0.7
	Bar	—	10～100	37.5	125	1.6

Note: Per GBn198-88 Standard.

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2. High Squareness soft magnetic alloys

Applications:

Small and medium power magnetic amplifiers; pulse transformers; magnetic modulators; contactless relays; contacting rectifiers; chokes; amplitude modulators and transductors.

Grade	Shape	Max. Permeability μmax	Squareness Br/Bm	Coercivity (in Saturation) Hc	Saturation Induction Bs
		mH/m		A/m	T
		≥		≤
1J34	Strip	137.5	0.87	8	1.50
1J51		50	0.85	18	1.50

Note: Above data is for thickness 0.10～0.20 mm (1J34) and 0.10 mm (1J51), may be different for other thickness (refer to Standard GBn198-88).

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3. Magnetic Thermal compensation alloys

Applications:

Traveling wave tubes; magnetrons; magnetic sub-circuit compensating elements in instruments.

Grade	Shape	Induction B with field of 8000A/m at various temperature
		-20^oC	20^oC	40^oC	60^oC	80^oC
1J30	Bar	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
1J38		0.25～0.42	0.05～0.24	0.015～0.12	—	—

Note:

1. Above data is for thickness of 0.10～1.00 mm.

2. Per GB/T15005-94 Standard.

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Amorphous Brazing solder

Applications:

As a substitute of sliver solder, the amorphous solder is widely used in soldering of precision instruments, circuit board etc.

Features:

1. Uniform microstructure in the amorphous structure without multi-phases that can be found in most other solder materials.
2. High purity in the amorphous due to its simple manufacturing process and strict starting material selection.
3. Comparison of gas containing in Ni-Cr-B- Si alloy, amorphous strips and crystal solder respectively:

	(O)%	(N)%	(H)%
Amorphous	0.0045	0.0022	0.0009
Crystalline	0.25	1	0.0065

4. Strong bonding force because the elements in amorphous are easy to diffuse that enhance greatly the bonding force.
5. Small thickness of about 0.03 mm.
6. Low cost without addition of sliver.

Specifications: (Grade 7K702)

Grade	International Grade	Melting point (oC)	Soldering Temperature (oC)	Bonding force (Mpa)
NAC－RW－Ni-301	7k702	560－640	700－750	98－137

Note: All sizes are available.

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Iron based nanocrystalline Strips

Applications:

As a substitution of silicon steel, Permalloy and soft ferrite, the nanocrystalline can be used widely in many high frequency (20 kHz –100 kHz) switch-mode power supply applications as primary power transformers, control transformers, filter, and storage inductors, reactors, magnetic amplifiers and saturated reactors, EMC filter common and different mode inductors and ISDN Minitype isolating transformers. It can be also used in other types of mutual inductors with various precisions.

Features:

High saturated induction, high permeability, low coercivity, low loss, good stability, and good wearing and eroding resistance. It features lower cost and the best performance to cost ratio.

Typical specification:

Table 1: Physical specification of the nanocrystalline alloys. (Grade 1k1070)

Saturation Bs	1.25 T	Saturated magnetostriction coefficient	2×10^-6
Curie temp. Tc	560 °C	Density d	7.2 g/cm^3
Crystallization Temp. Tx	510 °C	Resistivity	130muOhm-cm
Rigidity Hv	880kg/mm^2	Thermal expansion coefficient

Table 2: Typical magnetic specification of various nanocrystalline alloys.

Grade	R-N-L	R-N-M	R-N-H
Initial Permeability	>3×10^4	>8×10^4	>1×10^4
Max. Permeability	>5×10^4	>45×10^4	>50×10^4
Residual	<0.2 T	0.6 T	>0.85 T
Coercivity	<1.8A/m	<0.8A/m	<1.8A/m
Loss P (20kHz, 0.5T)	<30W/kg	<25 W/kg	<60W/kg
Loss P (100kHz, 0.3T)	<150W/kg	<150 W/kg	<300W/kg
Loss variation (-55－125°C)	<15%	<15%	<15%
Applications	Single end switch mode power supply; transformer of count power supply; Uni-polar pulse transformer; reactor and all filter inductor.	Full bridge, half bridge or push-pull switch mode transformer and high precision power electronic inductor, sensor and common mode choke.	Bipolar pulse transformer, transductor in switch mode power supply, magnetic amplifier, aiguille suppresser, and pulse compressor.

Note: The data above is from the strip after optimal heat-treated.

Table 3. Dimensions:

Grade	Width, mm	Thickness, mm	Note
R-N-4	4±0.2	30±5
R-N-5	5±0.2	30±5
R-N-8	8±0.2	30±5
R-N-10	10±0.5	30±5
R-N-15	15±0.5	30±5
R-N-20	20±0.5	30±5
R-N-25	25±1	30±5
R-N-30	30±1	30±5
R-N-40	40±1	30±5
R-N-50	50±2	30±5

Note: Strips with other dimensions are also available.

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Cobalt based amorphous strips

Applications:

As a substitution of Permalloy and ferrite, the amorphous cores can be used widely in high frequency transformers, filter inductors and magnetic amplifiers etc. The frequency can be up to 200kHz. It can also be used in applications such as ISDN insolating transformers, common mode inductors, and thief proof sensors in supermarket and library, and video reading heads.

Features:

Cobalt based amorphous has the highest permeability, lower Bs and coercivity, low loss, excellent wearing and eroding resistance, good thermal and aging stability and shocking resistance.

Typical specification:

Table: Physical specification of the cobalt base amorphous: (1K201、1K202)

Saturation Bs	0.5－0.8T	Rigidity Hv	960kg/mm^2
Curie Temp. Tc	320°C	Density d	8g/cm^3
Crystallization Temp. Tx	520°C	Resistivity r	130Wm-cm
Saturated magnetostriction factor ls	<1´10^-6	Thermal expansion coefficient Dl/l

Table 2. Typical magnetic specifications

Grade	R-C-L	R-C-M	R-C-H
Initial permeability	>3x10^4	>10×10^4	>5×10^3
Max. Permeability	>3x10^4	>20×10^4	>25×10^4
Saturated induction	0.5-0.8T	0.5-0.8T	0.5-0.8T
Residual	<0.1 T	0.4 T	0.5-0.7 T
Coercivity	<2A/m	<2 A/m	<2A/m
Loss (20kHz, 0.5T)	<25W/kg	<30W/kg	<35W/kg
Loss (100kHz, 0.2T)	<60W/kg	<70W/kg	<90W/kg
Loss changing rate(-55－125°C)	<15%	<15%	<15%
Applications	Single end switch mode power supply; filter inductor, storage inductor, EMC different mode inductor etc.	Common mode choke, current compensation noise suppresser and their-proof sensor in supermarket and library; high sensitive and low magnetic field sensor core.	Pulse transformer, transductor, Bi-end switch mode power supply, magnetic amplifier, aiguille suppresser, and pulse compressor.

Note: The data above is from f11/19/5 cobalt based core after optimal heat treatment.

Strip dimensions:

Grade	Width mm	Thickness mm	note
R-C-1	1±0.1	30±5
R-C-2	2±0.1	30±5
R-C-3	3±0.1	30±5
R-C-5	5±0.2	30±5
R-C-8	8±0.2	30±5
R-C-10	10±0.5	30±5
R-C-15	15±0.5	30±5
R-C-20	20±0.5	30±5
R-C-25	25±0.5	30±5
R-C-30	30±1	30±5
R-C-40	40±1	30±5

Note: Other sizes are also available.

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Iron based amorphous strips

Applications:

As a substitute of silicon steel, the amorphous can be used as core material for all kind of low frequency distribution transformer, intermediate frequency (50Hz~10kHz) transformer, and reactor of switch mode power supply (frequency up to 50 KHz.

Features:

The amorphous has the highest saturation induction, high permeability, and low coercivity, low loss ( 1/3 ~1.5 of that of silicon steel), low exciting current and good thermal and time stability.

Typical specification:

Table 1: Physical specification of iron based amorphous. (Grade1K101)

Saturation Bs	1.56T	Rigidity Hv	960kg/mm^2
Curie Temp. Tc	410°C	Density d	7.18g/cm^3
Crystallization Temp. Tx	550°C	Resistivity r	130Wm-cm
Saturated Magnetostriction factor ls	27´10^-6	Thermal expansion coefficient Dl/l

Table 2: Typical magnetic specification

Grade	R-F-L	R-F-M	R-F-H
Max. Permeability	>2x10^4	>20´10^4	>25´10^4
Saturation	1.5 T	1.5 T	1.5 T
Residual	<0.5 T	0.5－1.0 T	1.2 T
Coercivity	<4A/m	<2.4 A/m	<4A/m
Loss (50Hz, 1.4T)	<0.2W/kg	<0.13W/kg	<0.3W/kg
Loss (400Hz, 1.2T)	<1.8W/kg	<1.25W/kg	<2W/kg
Loss (8kHz, 1.0T)	<80W/kg	<60W/kg	<100W/kg
Loss variance ratio (-55°C －125°C	<15%	<15%	<15%
Loss variance ratio (120°C´200小时)	<15%	<15%	<15%
Applications	Single pole pulse transformer, single end switch mode power supply, filter inductor and reactor.	Intermediate frequency transformer	Distribution transformer, intermediate frequency transformer, bi-end switch mode power supply, pulse transformer, transductor and pulse compressor.

Dimensions:

Grade	Width mm	Thickness mm	Note
R-F-5	5±0.2	30±5
R-F-8	8±0.2	30±5
R-F-10	10±0.5	30±5
R-F-15	15±0.5	30±5
R-F-20	20±1	30±5
R-F-25	25±1	30±5
R-F-30	30±2	30±5
R-F-40	40±2	30±5
R-F-50	50±2	30±5
R-F-70	70±5	30±5
R-F-100	100±5	30±5

Note: Can be customized.

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Production capability:

1. In total 5 production lines;
2. Strip width <100 mm
3. Iron, iron-nickel and cobalt based amorphous and iron based microcrystalline strips;
4. 300 ton of strips and 200 tons cores and components.

　　

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