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Invar 1J79

Invar 1J79
Product Details

Invar alloy 1J79

Chemical Composition Wt.%

No.

Chemical composition (mass fraction) (%)


C

P

S

Mn

Si

Ni

Cr

Co

Mo

Cu

Fe

1J79

≤0.03

≤0.02

≤0.02

0.6-1.1

0.30-

0.5

78.5-80

---

---

3.8-4.1

≤0.20

bal

Brief Introduction

1J79 is a kind of soft magnetic alloy. Soft magnetic alloy is easily magnetized under the action of external magnetic field, and the magnetic induction intensity disappears after the magnetic field is removed. Soft magnetic alloy is divided into low carbon electrical steel and Amco iron, silicon steel sheet, ferronickel soft magnetic alloy, iron cobalt soft magnetic alloy, Sendust aluminum soft magnetic alloy, soft magnetic alloy in the power industry, mainly used in the more High magnetic field with high magnetic induction and low core loss of the alloy. In the electronics industry, alloys with high permeability and low coercivity at low or medium magnetic fields are mainly used. At high frequencies, thin strips or alloys of higher resistivity must be used. Generally use plate or strip.

Mechanical Proper ty

μΩ•m

g/cm³

Curie point

Saturation magnetostriction coefficient

HBS

tensile strength

/Mpa

Yield Strength/Mpa

Elongation (%)

Chilled state

Soft state

Chilled state

Soft state

Chilled state

Soft state

Chilled state

Soft state

0.55

8.6

450

2

210

120

1030

560

980

150

3

50

Average coefficient

of expansion

The linear expansion coefficient in the following temperature range /(×10-6/ ℃)

20~100℃

20~200℃

20~300℃

20~400℃

20~500℃

20~600℃

20~700℃

20~800℃

20~900℃

10.3~

10.9~

11.4~

11.9~

12.3~

12.7~

13.1~

13.4~

13.2~

10.8

11.2

12.9

12.5

13.2

13.4

13.6

13.6

13.7

Applications

Various transformers, transformers, magnetic amplifiers, choke cores and magnetic shields with high initial permeability, working in weak magnetic fields.

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