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Help CenterPermalloy 80 Alloy With Finest Quality and With ASTM Standard
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80% nickel and 16% iron and 4% molybdenum content. It's useful as a magnetic core material in electrical and electronic equipment. Commercial permalloy alloys typically have relative permeability of around 100,000, compared to several thousand for ordinary steel. If provide maximum magnetic permeabilities and minimal core losses at low field strengths. This vacuum-melted product also offers the advantages of small size and weight in magnetic core. Other magnetic properties are near zero magnetostriction, and significant anisotropic magnetoresistance.
Appliactions:
Transformer laminations ,Loudspeakers,Relays,Recording Heads
Deflection , Focusing Yokes,Amplifiers,Shielding,Motors.
Cross Reference
Russia |
USA |
Japan |
79HM |
Mumeta/4-79Permalloy/supermalloy
|
PC |
Chemical composition
Element |
Min |
Max |
Ni |
78.0 |
80.0 |
Mo |
3.8 |
4.10 |
Si |
0.30 |
0.50 |
Mn |
0.60 |
1.10 |
S |
|
0.020 |
P |
|
0.020 |
C |
|
0.03 |
Cu |
|
0.20 |
Fe |
Balance |
|
Phyical Property
Coefficient of Linear Expansion at different temperature/(x10-6/k)
Temp |
Value |
20~100℃ |
1.3~10.8 |
20~200℃ |
10.9~11.2 |
20~300℃ |
14.4~12.9 |
20~400℃ |
11.9~12.5 |
20~500℃ |
12.3~13.2 |
20~600℃ |
12.7~13.4 |
20~700℃ |
13.1~13.6 |
20~800℃ |
13.4~13.6 |
20~900℃ |
15.5~15.6 |
Mechanical Property
ResisitivityμΩ•m) |
0.55 |
|
Desinty g/cm3) |
8.6 |
|
Curie Point ℃ |
450 |
|
High saturated Magneto-striction Coefficientλθ/10-6 |
2 |
|
Brinell hardness HBS |
Un-annealed |
210 |
annealed |
120 |
|
Ob tensile strength MPa |
Un-annealed |
1030 |
annealed |
560 |
|
Os Yield strength MPa |
Un-annealed |
980 |
annealed |
150 |
|
Elongation (%)6 |
Un-annealed |
3 |
annealed |
50 |
|
AC Magnetic properties for strip(Min Value)
Thickness/mm |
The peak for the magnetic field strength is 0.1A/m, Under different frequencies of flexible magnetic permeability μm/(mH/m) |
|||
60Hz |
400Hz |
1KHz |
10Khz |
|
0.02 |
|
|
17.5 |
12.5 |
0.05 |
|
|
18.8 |
9.4 |
0.10 |
|
22.5 |
15 |
|
0.20 |
|
12.5 |
7.5 |
|
0.35 |
25 |
8.8 |
|
|
Magnetic Property Cold rolling strip
|
(δ&D)/mm |
μ0.08/(mH/m) ≥ |
μm/(mH/m) ≥ |
Bs/T ≥ |
Hc/(A/m) ≤ |
|
0.005 0.01 0.02-0.04 0.05-0.09 0.10-0.19 0.20-0.34 0.35-1.00 1.10-2.50 2.50-3.00 |
12.5 17.5 20.0 22.5 25.0 28.0 30.0 27.5 26.3 |
44.0 87.5 112.5 137.5 162.5 225.0 250.0 225.0 187.5 |
0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 |
6.4 4.8 4.0 2.8 2.0 1.6 1.2 1.6 2.0 |
|
I, II Condition : Cold Rolling Strip |
||||
|
0.02-0.04 0.05-0.09 0.10-0.19 0.20-0.34 0.35 |
22.5 25.0 27.5 31.3 32.5 |
125.0 150.0 187.5 250.0 275.0 |
0.75 0.75 0.75 0.75 0.75 |
2.4 2.0 1.6 1.2 0.96 |
|
III Condition : Cold Rolling Strip | |||||
|
0.01 0.02-0.04 0.05-0.09 0.10-0.19 0.20-0.34 0.35 |
25.0 31.0 38.0 38.0 38.0 44.0 |
150.0 190.0 250.0 250.0 280.0 310.0 |
0.73 0.73 0.73 0.73 0.73 0.73 |
2.4 1.6 1.2 1.2 1.0 1.0 |
|
Hot Rolling(forging) Bar
3-22 |
25.0 |
125.0 |
0.75 |
2.4 |
Hot Rolling(Forging)Flastspring
8-100 |
25.0 |
125.0 |
075 |
2.4 |
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