Stainless Steels
Austenitic
Camera Modules/Components, Communication Equipment Parts, Medical Equipment, Indwelling Needles, Motor Parts
*Due to its non-magnetic properties, it is used for applications where magnetism is not desired, such as in electronic components.
Thickness
0.010-1.5mm
Width
3.0-300mm
Length
COIL or SHEET less than 2000mm
This is the manufacturing range of coils and sheets we manufacture.
TOKKIN's own grade of steel.
Overseas standards are listed as equivalent or similar to our materials, so please use them as a reference.
JIS
SUS305 (G4305)
UNS
AISI
S30500
305
EN
1.4303
ISO
4303-305-00-I, X4CrNi18-12
GB
S30510, 10Cr18Ni12
Density
7.93 g/cm³
Specific Heat
502 J/(kg・K)
Electrical Resistivity
72 μΩ・cm
Young's Modulus
193 GPa
Thermal Expansion
17.3×10-6/K
Thermal Conductivity
16.3 W/(m・K) (100℃)
The table below shows approximate values of mechanical properties for annealed finish and full hardened finish.
We can manufacture products in the desired hardness (finish) between annealed finish and full hardened finish, but some finishes may not be available depending on the plate thickness, so please contact us first.
*For ultra-thin foil, soft materials such as annealed or 2B finish may not be applicable due to concerns about defects (folding, wrinkling, etc.).
The figure below shows the correlation between rolling ratio and hardness and magnetic permeability of TOKKIN 305M.
Austenitic stainless steels represented by SUS304 are nonmagnetic in the solution (annealed) condition, but become magnetic when cold rolled,whereas TOKKIN 305M maintains non-magnetic properties due to its high Ni, Mn, and Cr content.
Also, TOKKIN 305M has a higher amount of these elements within the range of JIS SUS 305, so that it can maintain non-magnetic properties better than JIS SUS 305.
Stainless steels that are not easily magnetized when a magnetic field is applied is called "non-magnetic stainless steel”.
We offer not only thin stainless steel foils, but also propose the appropriate steel grade and temper depending on specific application and use requirements, such as strength, workablility, magnetism, and corrosion resistance.