Soft magnetic alloy1J79/Precision alloy

• Customization: Available
• Product Type: Strip
• Material: Ni-Fe Alloy
• Model NO.: 1J79
• Carbon Content: Low Carbon
• Thickness: 0.1~3mm
• Width: 5~250mm
• resistivity: 0.55
• density: 8.6
• Curie point: 450
• Saturation magnetostriction coefficient: 2.0
• Transport Package: Inner Core, Waterproof Paper, Wooden Case
• Specification: 0.1*100
• Trademark: Permalloy
• Origin: China
• HS Code: 722699900
• Production Capacity: 3000 Tons/Year

Product Description

1J79/ Permalloy rods/ E11c rods 79HM alloy

Classification: precision soft magnetic alloy
Supplement: Alloy with high permeability in weak fields at saturation induction 0.65-0.75 T. Alloy 1J79/ permally high squareness of the hysteresis loop and a low coefficient of magnetization reversal
Application: For small cores of transformers, chokes and relays operating in weak fields, magnetic shields. In the small thickness (0.05 ± 0.02 mm) - cores for pulse transformers, magnetic amplifiers and solid state relays
Chemical Composition,%:
 

Ni  78.5 - 80%	Fe  13.73 - 16.8%	C  0.03%	Si  0.3 - 0.5%	Mn  0.6 - 1.1%	S  o 0.02%
P  0.02%	Mo  3.8 - 4.1%	Ti  0.15%	Al  0.15%	Cu  0.2%

Basic physical constants and mechanical properties of the alloy:
Density: γ = 8,6 g / cm3;
Electric resistivity: ρ = 0,55 ohm mm2 ? / m;
The temperature of the Curie point: Θs = 430 ° C;
Saturation magnetostriction: λS = 2 ? 106;
Brinell hardness of 210/120 HB;
Ultimate: RM = 1030/490 MPa;
Yield strength: σ0,2 = 980 145 MPa;
Modulus of elasticity E = 210 kN / mm2;
Elongation: δ5 = 3/50%;
Relative compression: φ = -%.

Heat treatment of the alloy

Annealing	Temperature and heating rate	Holding time, h	Cooling mode
Vacuum with a residual pressure not higher than 10-3 Torr. Art. or pure hydrogen with a dew point of not higher than minus 40 ° C.	(1125 ± 25) ° C not higher than 500 ° C / h	3-6	to 600 ° C at a rate not exceeding 200 ° C / h from 600 to 200 ° C at a rate of at least 400 ° C / h

 

The magnetic properties of the alloy

 

Type	Class	Thickness or diameter, mm	Initial permeability		Max. permittivity		Coercive force		Technical saturation induction
			mH / m	G / E	mH / m	G / E	A/m	E	(10^-4G)
			no less				no more		no less
cold-rolled strips	1	0,005	8,8	7000	38	30000	8,0	0,10	0,75
		0,01	17,5	14000	75	60000	5,6	0,07
		0,02	20	16000	88	70000	4,0	0,05
		0,05 0,08	20	16000	110	90000	3,2	0,04
		0,10 0,15	25	20000	150	120000	2,4	0,03
Cold rolled sheets and strips		0,20 0,25	28	22000	160	130000	1,6	0,02
		0,35 0,50 0,8 1,0	31	25000	190	150000	1,6	0,02
		1,5 2,0 2,5	28	22000	160	130000	1,6	0,02
cold drawn wire hot rolled sheets		0,05 0,10	6,3	5000	50	40000	6,4	0,08
		3-22	25	20000	100	80000	3,2	0,04
Bar		8-100	25	20000	100	80000	3,2	0,04
cold-rolled strips	2	0,005	12,5	10000	44	35000	6,4	0,08	0,73
		0,01	20	16000	110	90000	3,2	0,04
		0,02	25	20000	125	100000	2,4	0,03
		0,05 0,08	25	20000	150	120000	1,6	0,02
		0,10 0,15	28	22000	190	150000	1,2	0,015
		0,20 0,25	31	25000	230	18000	1,2	0,015
		0,35 0,5 0,8 1,0	38	30000	280	220000	1,0	0,012
		1,5; 2,0	31	25000	230	180000	1,2	0,015
cold-rolled strips	3	0,01	25	20000	150	12000	2,4	0,03	0,73
		0,02	31	25000	190	150000	1,6	0,02
		0,05	38	30000	250	200000	1,2	0,015
		0,10	38	30000	250	200000	1,2	0,015
		0,20 0,25	38	30000	280	220000	1,0	0,012
		0,35	44	35000	310	250000	1,0	0,012