Permalloy 1J79 79HM high permeability magnetic alloy
Permalloy 1J79 79HM high permeability magnetic alloy
Get high-quality Permalloy 1J79 79HM high permeability magnetic alloy directly from our factory. Trusted manufacturer delivering superior products. Buy now!
1J79 (Soft magnetic alloy) (Common Name: Ni79Mo4, E11c, malloy, permalloy, 79HM) 1J79 is a nickel–iron magnetic alloy, with about 80% nickel and 20% iron content. Invented in 1914 by physicist Gustav Elmen at Bell Telephone Laboratories, it is notable for its very high magnetic permeability, which makes it useful as a magnetic core material in electrical and electronic equipment, and also in magnetic shielding to block magnetic fields. Commercial permalloy alloys typically have relative permeability of around 100,000, compared to several thousand for ordinary steel. In addition to high permeability, its other magnetic properties are low coercivity, near zero magnetostriction, and significant anisotropic magnetoresistance. The low magnetostriction is critical for industrial applications, allowing it to be used in thin films where variable stresses would otherwise cause a ruinously large variation in magnetic properties. Permalloy's electrical resistivity can vary as much as 5% depending on the strength and the direction of an applied magnetic field. Permalloys typically have the face centered cubic crystal structure with a lattice constant of approximately 0.355 nm in the vicinity of a nickel concentration of 80%. A disadvantage of permalloy is that it is not very ductile or workable, so applications requiring elaborate shapes, such as magnetic shields, are made of other high permeability alloys such as mu metal. Permalloy is used in transformer laminations and magnetic recording heads. 1J79 widely used in radio-electronic industry, precision instruments, remote control and automatic control system. Normal composition%
Ni
78.5~80.0
Fe
Bal.
Mn
0.6~1.1
Si
0.3~0.5
Mo
3.8~4.1
Cu
≤0.2
C
≤0.03
P
≤0.02
S
≤0.02
Typical Mechanical properties
Yield strength
Tensile Strength
Elongation
Mpa
Mpa
%
980
1030
3~50
Typical Physical properties
Density (g/cm3)
8.6
Electrical resistivity at 20℃(Ωmm2/m)
0.55
Coefficient of linear expansion（20℃~200℃）X10-6/℃
10.3~11.5
Saturation magnetostriction coefficient λθ/ 10-6
2.0
Curie point Tc/ ℃
450
The magnetic properties of alloys with high permeability in weak fields
1J79
Initial permeability
Maximum permeability
Coercivity
Saturation magnetic induction intensity
Сold-rolled strip/ sheet.
Thickness, mm
μ0.08/ (mH/m)
μm/ (mH/m)
Hc/ (A/m)
BS/ T
≥
≤
0.01 mm
17.5
87.5
5.6
0.75
0.1~0.19 mm
25.0
162.5
2.4
0.2~0.34 mm
28.0
225.0
1.6
0.35~1.0 mm
30.0
250.0
1.6
1.1~2.5 mm
27.5
225.0
1.6
2.6~3.0 mm
26.3
187.5
2.0
cold drawn wire
0.1 mm
6.3
50
6.4
Bar
8-100 mm
25
100
3.2
Mode of heat treatment 1J79
Annealing media
Vacuum with a residual pressure not higher than 0.1Pa, hydrogen with a dew point of not higher than minus 40 ℃.
The heating temperature and rate
1100~1150℃
Holding time
3~6
Cooling rate
With 100 ~ 200 ℃/ h cooled to 600 ℃, rapidly cooled to 300℃
Style of supply
Alloys Name
Type
Dimension
1J79
Wire
D= 0.1~8mm
Strip
W= 8~390mm
T= 0.3mm
Foil
W= 10~100mm
T= 0.01~0.1
Bar
Dia= 8~100mm
L= 50~1000
Soft magnetic alloy Series: 1J22 1J50 1J79 1J85Shijiazhuang Chengyuan Alloy Material Co., Ltd. is a high-tech enterprise specializing in the production of various alloy materials. It has an advanced and complete production line, including material smelting, surface cleaning, rolling, slitting, and a complete test process. Meet the corresponding quality inspection of different products. The company focuses on the production and supply of various electric heating alloys, expansion alloys, soft magnetic alloys, elastic alloys, high temperature alloys and all kinds of pure metals. The product forms include wire, flat wire, strip, plate, bar, foil, Seamless pipe, wire mesh, powder, etc. can meet the application needs of different customers. The various performance indicators of the product are strictly in accordance with the national standards. If customers put forward non-standard requirements, they can also be implemented by reference.Our products are widely used in heating equipment, machinery manufacturing, electric furnace production, instrumentation, household appliances, mineral mining, aerospace, petroleum and nuclear power and other industries, and have received good market feedback. Our products have stable delivery time, excellent quality, sophisticated packaging, and high repurchase rate. They are not only widely recognized in the domestic market, but also have a good reputation in the international market.* OEM manufacturer* We will deliver the goods to the warehouse of the customer's agent in any city in China.* Terms of delivery: EXW, FCA, FOB, CIF, CPT, DAP* Mode of transport: Sea, Auto, Railway, Air and Express* Payment terms: Bank Transfer, Western Union, PayPal, Alipay* Quality Certificate:In order to improve the quality of products and services, with each order we provide a quality certificate for goods, which includes measured data - chemical composition, electrical resistivity, tensile strength, elongation, melting number, etc.Cheng Yuan Alloy Material Co., LtdEmail: [email protected]Tel .: +86 13673186216+86 311 8803 3197
Aestu onus nova qui pace! Inposuit triones ipsa duas regna praeter zephyro inminet ubi.
* OEM manufacturer * We will deliver the goods to the warehouse of the customer's agent in any city in China. * Terms of delivery: EXW, FCA, FOB, CIF, CPT, DAP * Mode of transport: Sea, Auto, Railway, Air and Express * Payment terms: Bank Transfer, Western Union, PayPal, Alipay * Quality Certificate: In order to improve the quality of products and services, with each order we provide a quality certificate for goods, which includes measured data - chemical composition, electrical resistivity, tensile strength, elongation, melting number, etc. Cheng Yuan Alloy Material Co., Ltd Email: [email protected] Tel .: +86 13673186216 +86 311 8803 3197
