Rare Earth Alloys Supplier | Spheroidizer & Rare Earth Silicon Iron Alloy

Rare Earth Alloys are metallurgical additives widely used in steelmaking and cast iron production to improve structure, refine grains, and enhance mechanical properties. Tiegu supplies high-quality rare earth silicon iron alloys and spheroidizer grades for steel mills and foundries, ensuring stable performance and reliable global supply.

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Introduction

Product Overview

Rare Earth Alloys are ferroalloy materials with a metallic silver-gray appearance, typically supplied in lump or granular form. They contain rare earth elements, which refer to a group of 17 chemical elements widely used in steelmaking and foundry industries.

Rare earth alloys play an important role in improving steel and cast iron performance, including grain refinement, deoxidation, desulfurization, and structure optimization.

Tiegu supplies high-quality rare earth ferroalloys to global steel and foundry industries, ensuring stable quality and reliable supply across the production chain.

Product Appearance

Rare earth alloys typically feature:

Lump or granular form
Silver-gray metallic surface
Metallic luster

Product Categories

Rare Earth Silicon Iron Alloy (ReSiFe)

Common grades:

Production process:

Rare earth silicon iron alloy can be produced using one-step or two-step methods. The two-step process produces higher purity material with lower impurity levels, but at a higher production cost.

Rare earth alloys often have complex compositions, multiple grades, and customized specifications depending on different manufacturers.

Lanthanum-Cerium Alloy

Typical composition:

Lanthanum (La): 35%
Cerium (Ce): 65%

Rare Earth Magnesium Silicon Iron Alloy (Spheroidizer)

Common grades:

Application:

This material is widely used as a spheroidizing agent in ductile iron production.

It helps transform flake graphite into spherical graphite by reducing surface tension of molten iron, promoting graphite spheroid formation and growth.

This significantly improves mechanical properties of cast iron, including:

Strength
Toughness
Ductility
Wear resistance
Fatigue resistance
Machinability

It is widely used in mechanical parts, automotive components, pipes, and fittings manufacturing.

Application Industries

Steel Mills
Foundries

Product Advantages

Improves steel and cast iron structure
Enhances mechanical properties
Supports spheroidization in ductile iron
Stable metallurgical performance
Multiple grades and customized supply available

Packaging Options

Inner bag: 25kg per bag
Outer packaging: Jumbo bag (ton bag)
Moisture-proof packaging available

Storage & Transportation

Rare earth alloys should be stored in a dry and well-ventilated warehouse to prevent moisture absorption.

During transportation, packaging damage should be avoided. Keep away from rain, water, acids, alkalis, and other corrosive substances.

Quality Control

We provide:

Chemical composition analysis
Mill Test Certificate (MTC)
Third-party inspection support

Explore More Ferroalloy Products

Tiegu supplies a wide range of ferroalloy products for global steelmaking and foundry industries.

Tiegu Supply Solutions

As a professional ferroalloy supplier, Tiegu provides high-quality, standards-compliant ferroalloys to international buyers.

We support customers with product specifications, quality documents, technical information, export documentation, and international logistics coordination, providing reliable ferroalloy sourcing solutions.

Contact Us

Contact Tiegu for rare earth alloy specifications, grades, and quotation solutions.

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