Soft magnetic alloy/Precision alloy

- Oct 18, 2019-


Product Description

 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  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% 


0.03% 

Si 
0.3 - 0.5% 

Mn 
0.6 - 1.1% 


o 0.02% 


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
AnnealingTemperature and heating rateHolding time, hCooling 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 / h3-6to 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
 
TypeClassThickness or diameter, mmInitial permeabilityMax. permittivityCoercive forceTechnical saturation induction
mH / mG / EmH / mG / EA/mE(10-4 G)
no lessno moreno less

cold-rolled strips



1
0,0058,8700038300008,00,100,75
0,0117,51400075600005,60,07
0,02201600088700004,00,05
0,05
0,08
2016000110900003,20,04
 0,10
0,15
25200001501200002,40,03
Cold rolled sheets and strips0,20
0,25
28220001601300001,60,02
0,35
0,50
0,8
1,0
31250001901500001,60,02
1,5
2,0
2,5
28220001601300001,60,02
cold drawn wire
hot rolled sheets
0,05
0,10
6,3500050400006,40,08
3-222520000100800003,20,04
Bar8-1002520000100800003,20,04
cold-rolled strips20,00512,51000044350006,40,080,73
0,012016000110900003,20,04
0,0225200001251000002,40,03
0,05
0,08
25200001501200001,60,02
0,10
0,15
28220001901500001,20,015
0,20
0,25
3125000230180001,20,015
0,35
0,5
0,8
1,0

38

30000

280

220000

1,0

0,012
1,5; 2,031250002301800001,20,015
cold-rolled strips30,012520000150120002,40,030,73
0,0231250001901500001,60,02
0,0538300002502000001,20,015
0,1038300002502000001,20,015
0,20
0,25
38300002802200001,00,012
0,3544350003102500001,00,012