Metals Suitable for Melting in Induction Furnaces

In metal casting industries, selecting the right induction furnace is critical to achieving high melting efficiency, energy savings, and stable metal quality. Different furnace structures are designed for different types of metals—mainly aluminum-frame and steel-frame induction furnaces. Understanding which furnace suits which metal can help manufacturers reduce costs and improve productivity.

1. Gold

Gold is one of the most commonly cast precious metals, primarily used in jewelry manufacturing and refining industries.
For gold melting, aluminum-frame induction furnaces are generally the most efficient option. They provide fast heating and precise temperature control—ideal for small-batch, high-purity operations typical of gold casting. The compact size and high thermal efficiency of aluminum furnaces make them a preferred choice for jewelry producers worldwide.

2. Silver

Like gold, silver is often melted in relatively small quantities. Efficiency and temperature stability are key to achieving a high-quality melt.
Aluminum induction furnaces again stand out for this purpose, offering quick heating cycles and low energy consumption. Their smaller capacity suits silver refineries, jewelry manufacturers, and laboratories that require consistent, clean melting performance.

3. Copper

Copper melting requires careful control due to its high conductivity and melting point.
For smaller-scale operations—such as foundries or recycling plants processing copper scrap—aluminum-frame furnaces offer fast melting and flexible operation.
However, when handling larger quantities or continuous production, steel-shell induction furnaces are recommended. Their superior magnetic shielding and thermal insulation ensure efficient, stable melting for high-volume copper processing.

4. Steel

Steel is among the most widely melted industrial metals, used in construction, machinery, and automotive production.
When dealing with small batches or test melting, an aluminum-frame furnace can deliver fast heating and convenient operation.
But for large-scale steel melting—where tons of material must be processed per hour—a steel-frame induction furnace is essential.
These furnaces are engineered for durability, better magnetic isolation, and higher power capacity. Some modern models can achieve melting rates of up to 25 tons per hour, meeting the demands of high-output steel plants.

Summary

When selecting an induction furnace, the key consideration is production scale:

• For small or medium-scale melting, aluminum induction furnaces are ideal due to their efficiency and compact size.
• For large-scale or continuous production, steel-shell induction furnaces deliver better stability, energy efficiency, and long service life.

Choosing the right furnace structure ensures not only better melting performance but also lower operational costs and higher return on investment.

To learn more about industrial melting solutions, contact Luoyang Judian, a professional manufacturer of induction furnaces for various metals and applications.