Magnetic core material, which is essential in electromagnetic actuators, is required to have various different properties such as corrosion resistance, magnetic property, electrical resistance, and workability depending on the usage or performance. We have broadened our lineup of soft-magnetic stainless steels to meet varying demands ever since we introduced the world’s first soft-magnetic stainless steel K-M31 over 50 years ago.
Features
Compared with pure iron magnetic materials:
- High corrosion-resistance
- High electrical resistance
To meet processing methods:
- Free-cutting types
- Cold fogeabie types
Compared to general ferrite stainless steel:
- Excellent magnetic properties
[Usage]
Fuel injectors, solenoid valve cores,
Magnetic sensors, magnetometric sensors, semiconductor valve stems,
massflow controller cores
Description of materials
[Composition]
- K-M31 13Cr-2Si
- K-M35FL 13Cr-0.7Si-0.2Al-0.2Pb
- K-M62F 13Cr-0.8Al-Mo,Ti,Pb
- K-M41F 17Cr-1Si-Mo,S,Ti
- K-M38 18Cr-2Si-2Mo
- K-M45 20Cr-2Si-2Mo
- K-M60 13Cr-0.2Al-1Mo
[Standard heat treatment condition]
- K-M31、K-M35FL、K-M62F、K-M60 950℃×3hr-furnace cooling
- K-M38、K-M41F 850℃×3hr-furnace cooling
- K-M45 1000℃×3hr-rapid cooling
Characteristics
[Soft-magnetic properties, pitting potential]
[Mechanical properties, hardness]
The characteristics above are those after standard heat treatment.
Other
[Lead-free of free-cutting steel]
Lead-free is possible by dispersing TICS in steels.
Refer to Pb Free TICS Free-Cutting Soft-magnetic Stainless Steel.
[SEMI certified materials]
K-M38 and K-M45 are the only alternatives to ultrahigh purity grade materials among ferrite stainless steels in SEMI F105-0914 "Guide to Metallic Material Compatibility in Gas Supply Systems".
※SEMI=Semiconductor Equipment and Material International