What is the thickness of amorphous alloy

Summary of Thickness Ranges for Various Amorphous Alloys And Amorphous Metal

First . Iron-Based Amorphous Alloys (Soft Magnetic, Mainstream for Transformers/Inductors; Forms: Spun Tapes, Thin Strips, Blocks, Powder)

1. Iron-Based Amorphous Spun Tapes (Continuous Thin Strips, Most Commonly Used in Industry)

Unit: μm (1 mm = 1000 μm)

1. 20 μm (0.020 mm): Ultra-thin high-frequency grade, used in high-frequency inverters, energy storage, and common-mode chokes

2. 22 μm (0.022 mm): Dedicated to high-end high-frequency power supplies

3. 25 μm (0.025 mm): Mainstream standard specification in the market; standard for distribution transformers, UPS systems, and photovoltaic chokes

4. 30 μm (0.030 mm): Traditional line-frequency transformers and high-power reactors; offers better toughness and is easier to wind

5. 35 μm (0.035 mm): Low-frequency, high-current equipment and magnetic components for industrial electric furnaces

6. 40–100 μm thick strips: Niche custom applications; rarely used for magnetic cores

No 2. Iron-based bulk amorphous (powder-sintered monolithic magnetic cores)

There is no concept of “strip thickness”; this refers to the cross-sectional thickness or diameter of the solid core: typically 5 mm to 18 mm, with custom options available up to 25 mm; the internal material consists of 25 μm amorphous powder that has been pressed into a solid block.

No 3. Iron-based amorphous powder

Powder particle size: 5–150 μm; this is not referred to as “thickness” but rather as particle size.

Second. Cobalt-based amorphous (high-precision, high-frequency soft magnetic material; mass-produced only as thin strips)

All are ultra-thin, narrow strips, primarily used for low-signal sensing and zero-sequence current transformers:

1. 14 μm, 16 μm, 18 μm: Ultra-high-frequency, high-precision cores for residual current devices (RCDs) and military sensors

2. 20 μm, 25 μm: General-purpose cobalt-based strips

3. 30 μm: Custom-made large-size cobalt-based toroidal cores

There are virtually no mass-produced cobalt-based bulk products.

Third. Iron-Nickel-Based Amorphous Materials (Acousto-Magnetic Anti-Theft, Low-Frequency Shielding)

Available only in thin strip form: two standard thicknesses—25 μm and 30 μm—with no ultra-thin specifications.

Fourth. Zirconium-Based / Copper-Based / Titanium-Based Bulk Amorphous Materials (Structural Components, Non-Magnetic)

No thin strips; all products are cast bulk materials, with dimensions in mm:

– Thin sheets: 0.5 mm, 1 mm, 1.5 mm, 2 mm, 3 mm, 5 mm

– Rods / Custom-shaped parts: Cross-sectional diameter 3 mm–20 mm; large custom parts can exceed 30 mm

There are no micrometer-level thin strips; these are solid block materials.

FIFTH Supplementary: Amorphous Wire (Rarely Used)

Wire diameter: 20–120 μm; thickness is not specified; referred to as wire diameter.

What is the thickness of amorphous alloy and amorphous metal, here simplified classification:

1. Power-frequency iron-core transformers: 25 μm, 30 μm

2. High-frequency UPS / inverter iron-based: 20 μm, 22 μm

3. Precision cobalt-based current transformers: 14/16/18 μm (ultra-thin)

4. Structural block-type amorphous: 0.5–30 mm solid sheets / billets

5. All amorphous powders: 5–150 μm particles; no concept of thickness