High Magnetic Conductivity Alloy 1j79 Soft Magnetic Alloy Permalloy

- Oct 15, 2019-


Product Description

Description                                                                                  

Permalloy 80 is an alloy of nickel, iron and molybdenum. It is a soft magnetic alloy with exceptionally high magnetic permeability. The alloy has a low coercivity, near zero magnetostriction, and significant anisotropic magnetoresistance. The low magnetostriction is critical for industrial applications,

where variable stresses in thin films would otherwise cause a ruinously large variation in magnetic properties.

Parameter                                                                                   

TABLE 1          Chemical Requirement

 Eelement C≤ P≤ S≤ Mn Si Cu≤ Mo Ni Fe
 Composition% 0.03 0.020.02 0.6-1.10.3-0.5 0.20  3.8-4.178.5-80.0Remainder 

Notes:

The shape and dimensions of the alloys are in compliance with GBn198-88

TABLE 2           Physical Requirement

PropertyResisitivity(μΩM)Desinty(g/cm3)Curie Point.CHigh saturation magneto-striction coeffientλθ/10-6
Value0.558.6450 2

TABLE 3           AC Magnetic Properties for Strip(min Value)

Thickness

        The peak for the magnetic field strength is 0.1A/m,Under different frequencise of

         flexible magnetic permeability μm/(mH/m)

60Hz400Hz1KHz10KHz
0.02  17.512.5
0.05  18.89.4
0.10 22.515 
0.20 12.57.5 
0.35258.8  

TABLE 4        Coefficient of Linear Expansion at different Temperature/(x10-6)

Temp20-100°C20-200oC20-300oC20-400oC20-500oC20-600oC20-700oC
Value1.3-10.810.9-11.214.4-12.911.9-12.512.3-13.212.7-13.413.1-13.6

TABLE 5        Magnetic Requirement (Cold rolling Strip)

Grade I

(δ&D)/mmμ0.08/(mHm)≥μm(mHm)≥Bs/T≥Hc(A/M)≤
0.00512.544.00.756.4
0.0117.587.50.754.8
0.02-0.0420.0112.50.754.0
0.05-0.0922.5137.50.752.8
0.10-0.1925.0162.50.752.0
0.20-0.3428.0225.00.751.6
0.35-1.0030.0250.00.751.2
1.10-2.5027.5225.00.751.6
2.50-3.0026.3187.50.752.0

Grade II

(δ&D)/mmμ0.08/(mHm)≥μm(mHm)≥Bs/T≥Hc(A/M)≤
0.02-0.0422.5125.00.752.4
0.05-0.0925.0150.00.752.0
0.10-0.1927.5187.50.751.6
0.20-0.3431.3250.00.751.2
0.3532.5275.00.750.79

Grade III

(δ&D)/mmμ0.08/(mHm)≥μm(mHm)≥Bs/T≥Hc(A/M)≤
0.0125.0150.00.732.4
0.02-0.0431.0190.00.731.6
0.05-0.0938.0250.00.731.2
0.10-0.1938.0250.00.731.2
0.20-0.3438.0280.00.731.0
0.3544.0310.00.731.0

Hot Rolling(forging) Flastspring

(δ&D)/mmμ0.08/(mHm)≥μm(mHm)≥Bs/T≥Hc(A/M)≤
3-2225.01250.752.4

Hot Rolling (Forging)Bar

(δ&D)/mmμ0.08/(mHm)≥μm(mHm)≥Bs/T≥Hc(A/M)≤
8-10025.0125.00.752.4