Magnesium Oxide Powder

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Magnesium Oxide Powder

Purity: ≥99.995%
Particle Size: 5-10 μm or customized

  • Custom sizes and standard sizes in stock
  • Competitive Price
  • Quick Lead Time

  • Magnesium Oxide Powder is a high-purity white powder known for its excellent thermal stability, electrical insulation, and chemical inertness. With a purity of up to 99.995%, it is widely used in electronic ceramics, high-grade refractories, catalyst supports, and specialty coatings. Its high melting point, low impurity content, and strong resistance to moisture and corrosion make it ideal for demanding industrial and scientific applications. We can supply high-quality magnesium oxide powder with various specifications and competitive prices, offering customized solutions to meet specific requirements.
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Magnesium Oxide Powder Data Sheet

Reference Code:

HM2002

Color:

White

Chemical Formula:

MgO

Density:

3.20 g/cm3

Particle Size:

5-10 μm, or customzied

Molecular weight:

40.30 g/mol

Melting point:

2800 ℃

Boiling point:

3600 ℃

Magnesium Oxide Powder Description

Magnesium oxide powder is a high-purity, white, odorless solid with excellent stability and low reactivity in neutral and organic environments. It belongs to the alkaline earth metal oxides and displays amphoteric behavior, dissolving in acidic and ammonium salt solutions. Upon calcination at elevated temperatures, it forms a stable crystalline phase. This material is commonly used in ceramics, electronics, coatings, construction, and polymer industries due to its high purity, chemical resistance, and functional versatility.

Magnesium Oxide Powder Specifications

Product

Purity

Particle Size (μm)

Chemical Composition (%)

HM-MgO

≥99.995%

5-10

CaO

Fe

Mn

3.1

2.5

2.3

Magnesium Oxide Powder Features

  • High Purity: Typically ≥99.995%, ensuring consistent performance in demanding applications.
  • Thermal Stability: Maintains structure and function under high-temperature conditions.
  • Chemical Inertness: Resists corrosion from most chemicals, especially in neutral and basic environments.
  • Fine Particle Size: Enables uniform mixing and dispersion in various formulations.
  • Electrical Insulation: Excellent dielectric properties, suitable for electronic and insulating materials.

Magnesium Oxide Powder Applications

  • Ceramic Production: Used as a raw material in manufacturing high-performance refractory and structural ceramics.
  • Polymer Fillers: Acts as a reinforcing agent in plastics, rubber, and paints for enhanced durability and thermal resistance.
  • Catalysts and Adsorbents: Serves as a base material in catalytic reactions and for removing impurities in gas or liquid systems.
  • Pharmaceutical Industry: Used as an antacid and laxative in medical formulations.
  • Flame Retardants: Improves fire resistance in construction materials and composite products.
  • Aerospace Applications HM
    Aerospace
  • Automotive Industry 1
    Automotive Industry
  • Metal Smelting
    Metal Smelting
  • Electronic Devices
    Electronic Devices

Magnesium Oxide Material Properties

Property

Value

Unit

Specific Gravity (S.G)

3.58

g/cm³

Porosity

10

%

Vickers Hardness (HV1)

650

HV

Flexural Strength

105

MPa

Compressive Strength

275

MPa

Young’s Modulus

2.1 x 10¹¹

Pa (N/m²)

Fracture Toughness

1.8

MPa·m^1/2

Property

Value

Unit

Coefficient of Thermal Expansion

40℃ to 400℃

10.0 × 10⁻⁶

/°C

40℃ to 800℃

10.5 × 10⁻⁶

/°C

Thermal Conductivity

42

W/m·K

Specific Heat

0.92

J/g·°C

Dielectric Strength (Thermal Shock Resistance)

17

kV/mm

Property

Value

Unit

Volume Resistivity

At 20°C

> 1014

Ω·cm

At 500°C

> 108

Ω·cm

Permittivity (Dielectric Constant)@ 1 MHz

9.8

C²/(N·m²) or (Dimensionless)

Dielectric Loss Tangent@ 1 MHz

1 × 10⁻⁴

–

Magnesium Oxide Ceramic Machining

Magnesium Oxide Ceramic Machining

Magnesium oxide can be machined in green or bisque form before sintering, and to a limited extent in its fully sintered state. In its pre-sintered state, the material is relatively soft and easier to shape, but like many ceramics, it undergoes significant shrinkage—up to 20%—during sintering, which can affect final dimensions. Fully sintered magnesium oxide is very hard and brittle, requiring diamond tools and precision equipment for any post-sintering machining.

Machining Methods and Considerations

  • Green or Bisque Machining: Easier to cut and form, suitable for complex shapes before firing.
  • Sintering Shrinkage: Expect about 15–20% dimensional reduction during sintering, which impacts tolerance control.
  • Post-Sintering Machining: Requires diamond grinding tools due to the material’s hardness and brittleness.
  • Fragility: Fully sintered MgO is prone to chipping and fracture if not handled with care during machining.
  • Tooling and Time: Machining dense MgO ceramics is time-consuming and requires specialized equipment.

Magnesium Oxide Ceramic Packaging

Magnesium oxide ceramic products are typically packaged in vacuum-sealed bags to prevent moisture or contamination and wrapped with foam to cushion vibrations and impacts during transport, ensuring the quality of products in their original condition.

ceramic products packing HM

Download

  • Magnesium Oxide Data Sheet_PDS
  • SAFETY DATA SHEET (SDS) – Magnesium Oxide Ceramic

Get A Quote

We will check and get back to you in 24 hours

To customize your magnesium oxide powder, please provide the following details:

  1. Particle Size: Specify the desired particle size or range.
  2. Purity of the material
  3. Quantity of the powders you need.

Once we have these details, we can provide you with a quote within 24 hours.

We carry a wide variety of graphite ceramic products in stock, and for these, there is generally no minimum order requirement. However, for custom orders, we typically set a minimum order value of $200. The lead time for stock items is usually 1-2 weeks, while custom orders usually take 3-4 weeks, depending on the specifics of the order.

Magnesium oxide foam filter is typically placed iPurity levels can vary, but high-purity magnesium oxide powder typically ranges from 98% to 99.995%, depending on the application requirements.

Yes, it is generally considered non-toxic and safe when handled with standard protective equipment, but direct inhalation of dust should be avoided.

Advanced Ceramic Hub, established in 2016 in Colorado, USA, is a specialized supplier and manufacturer of graphene products. With extensive expertise in supply and export, we offer competitive pricing and customized solutions tailored to specific requirements, ensuring outstanding quality and customer satisfaction. As a professional provider of ceramics, refractory metals, specialty alloys, spherical powders, and various advanced materials, we serve the research, development, and large-scale industrial production needs of the scientific and industrial sectors.

Magnesium Oxide Powder

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