Amorphous Metal Strip (Amorphous Core Material)

Overview of Amorphous Metal Strip

Amorphous metal strip, also known as metallic glass, is an advanced soft magnetic material with a unique, non-crystalline atomic structure. Unlike conventional crystalline steel, it is produced by rapidly quenching a molten iron-based alloy (typically Iron-Silicon-Boron) at a rate of approximately one million degrees Celsius per second. This ‘freezes’ the atoms in a disordered, glass-like state before they can form an ordered crystal lattice.

This disordered structure eliminates crystal boundaries and anisotropy, resulting in exceptionally low magnetic core loss—significantly lower than even the best grain-oriented silicon steel (CRGO). This makes amorphous metal strip the ultimate material for manufacturing ultra-high-efficiency distribution transformers, where reducing no-load losses is the primary objective.

Key Features and Unmatched Magnetic Performance

Amorphous metal’s unique structure gives it a combination of properties unmatched by any crystalline magnetic material:

– **Ultra-Low Core Loss:** Core losses are only 20-30% of those in conventional CRGO steel. This dramatically reduces transformer no-load losses, leading to massive energy savings over the equipment’s lifetime.
– **High Permeability & Low Coercivity:** The material requires very little energy to magnetize and demagnetize, contributing to its high efficiency, especially at standard power frequencies (50/60 Hz).
– **High Electrical Resistivity:** The inherent high resistivity of the alloy, combined with its thin ribbon form, minimizes eddy current losses, which are a major component of core loss.
– **Unique Physical Properties:** Amorphous metal is produced as a very thin ribbon, typically 25-30 microns (0.025-0.030 mm) thick. It is hard and brittle, unlike ductile steel, and is used to manufacture wound transformer cores rather than stacked cores.

Main Applications of Amorphous Strip

The primary application for amorphous metal strip is driven by its unparalleled energy efficiency:

– **High-Efficiency Distribution Transformers:** This is the material’s main application. Amorphous metal core distribution transformers (AMDT) can reduce no-load (core) losses by 60-80% compared to traditional CRGO-core transformers. They are critical for upgrading electrical grids and meeting stringent energy efficiency standards (e.g., DOE in the US, Tier 2 in Europe).
– **High-Frequency Inductors and Chokes:** The low loss characteristic is also beneficial in high-frequency applications, making it suitable for chokes in Switched-Mode Power Supplies (SMPS) and renewable energy inverters.
– **Magnetic Shielding:** Its high permeability at low frequencies makes it an effective material for shielding sensitive electronic equipment from stray magnetic fields.
– **Specialty Power Supplies & Pulse Transformers:** Used in applications requiring fast magnetic response and low energy loss.

Why Choose Us for Amorphous Metal Strip

Shandong Tanglu Metal Material Co., Ltd. is a specialist supplier of prime-grade amorphous metal strip from leading global manufacturers. We understand the critical nature of this material and its impact on transformer performance. Every coil we supply is accompanied by a full Mill Test Certificate guaranteeing the core loss, saturation induction, and other magnetic properties. We recognize the material’s brittle nature and have developed specialized, shock-proof packaging and handling procedures to ensure it arrives at your facility in perfect condition. We can provide amorphous strip in standard widths (e.g., 142mm, 170mm, 213mm) or offer precision slitting to custom widths for your core winding machinery.