Stainless steel metal powder is an important material used across industrial coatings, filtration systems, composite materials, laboratory research, and advanced manufacturing processes. Among the various grades available, atomized 316 stainless steel powder is one of the most versatile due to its excellent corrosion resistance, stable chemical composition, and fine particle characteristics.
Because of these properties, stainless steel powder is widely used as a metallic pigment, filtration medium, additive for coatings, and filler for specialist materials. Its ability to disperse evenly in liquids and resins makes it especially useful for industries that require durable metallic finishes and corrosion-resistant materials.
If you are searching where to buy stainless steel powder UK online, high-quality atomized powder is available directly from a trusted UK supplier:
where to buy stainless steel powder UK online
https://shop.hdchemicals.co.uk/collections/metal-powders/products/stainless-steel-metal-powder-atomized
This guide explores the composition, manufacturing process, properties, and real-world uses of 316 stainless steel powder, while also providing practical mixing examples and industrial applications.
What Is Stainless Steel Metal Powder?
Stainless steel powder is a finely divided metallic material produced by atomizing molten stainless steel into microscopic particles. This process creates powders that can be used in coatings, filtration materials, composites, and laboratory applications.
Unlike bulk metal, powdered stainless steel offers several advantages:
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large surface area
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excellent dispersion in liquids
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easy blending with polymers and resins
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suitability for filtration and coatings
Because the particles are extremely small, they can be integrated into paint systems, resin composites, and metal-based filtration materials.
Atomized stainless steel powders are particularly valuable because they produce smooth, spherical particles that flow well and disperse uniformly.
What Is Atomized Metal Powder?
Atomization is the process used to transform molten metal into fine powder particles.
During this process:
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Stainless steel is melted in a furnace.
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The molten metal is forced through a nozzle.
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High-pressure gas or water jets break the metal stream into droplets.
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The droplets cool rapidly and solidify into powder.
This process produces spheroidal particles, which offer significant advantages compared to irregular powders.
Benefits of Atomized Metal Powder
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improved powder flow
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uniform particle size distribution
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better dispersion in coatings and resins
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reduced clumping during mixing
These properties make atomized stainless steel powder ideal for industrial coatings, metallic pigments, filtration media, and research applications.
Product Overview: Atomized 316 Stainless Steel Powder
The stainless steel powder supplied by HD Chemicals is designed for consistent industrial performance and laboratory reliability.
Key Product Features
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High-quality atomized stainless steel powder
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Fine particle size suitable for coatings and pigments
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Spheroidal particle shape for improved flow
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Corrosion-resistant 316 stainless steel alloy
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Supplied in convenient 100 g sealed bags
Product Specifications
Weight: 100 g – 500 g
Packaging: Multiple sealed 100 g bags
Form: Fine atomized metal powder
Particle size: 70% smaller than 45 µm
Particle shape: Spheroidal
Colour: Metallic grey
Odour: Odourless
Melting point: ~1400 °C
Alloy: 316 stainless steel
These specifications make the powder suitable for specialist coatings, composite materials, filtration media, and laboratory research.
Chemical Composition of 316 Stainless Steel Powder
The performance of stainless steel powder depends heavily on its chemical composition. Stainless steel is not a pure metal but an alloy designed to combine strength with corrosion resistance.
The composition of 316 stainless steel powder supplied by HD Chemicals is as follows.
Chemical Composition Table
| Chemical Element | Content (%) |
|---|---|
| Iron (Fe) | Balance |
| Chromium (Cr) | 16 – 18.00 |
| Nickel (Ni) | 12 – 14.00 |
| Molybdenum (Mo) | 2.00 – 3.00 |
| Silicon (Si) | 0.5 – 1.0 |
| Sulfur (S) | < 0.015 |
| Carbon (C) | < 0.030 |
| Manganese (Mn) | < 0.2 |
Iron forms the base metal, while the other elements are added to improve corrosion resistance, mechanical strength, and stability.
Why These Elements Matter
Iron (Balance)
Iron forms the structural foundation of the alloy and provides strength and stability.
Chromium (16–18%)
Chromium is responsible for the stainless property of the alloy.
When exposed to oxygen, chromium forms a thin oxide layer that protects the metal from corrosion.
Nickel (12–14%)
Nickel improves:
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toughness
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corrosion resistance
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structural stability
It also helps the alloy maintain strength at higher temperatures.
Molybdenum (2–3%)
Molybdenum significantly improves resistance to chloride corrosion and pitting, making 316 stainless steel suitable for marine and chemical environments.
Silicon (0.5–1.0%)
Silicon enhances oxidation resistance and improves the stability of the alloy during manufacturing.
Carbon (<0.030%)
Low carbon levels help prevent carbide formation that could reduce corrosion resistance.
Sulfur (<0.015%)
Sulfur is present only in trace amounts because higher levels could weaken corrosion resistance.
Manganese (<0.2%)
Manganese contributes to improved strength and helps stabilise the alloy during production.
Particle Size and Shape
Particle characteristics play an important role in how stainless steel powder behaves in coatings and composite materials.
Particle Size
The powder specification indicates:
70% of particles are smaller than 45 microns.
Fine particles allow:
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smooth dispersion in liquids
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uniform coating surfaces
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improved packing density
Spheroidal Particle Shape
The atomization process produces spherical particles, which improves:
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powder flow
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mixing behaviour
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coating consistency
Spherical powders also reduce dusting and clumping during handling.
Industrial Applications of Stainless Steel Powder
Stainless steel metal powder has a wide range of industrial uses.
Metallic Pigments and Decorative Finishes
Stainless steel powder can be used as a metallic pigment in coatings and decorative finishes.
When dispersed into paints or resins, the powder produces a true metallic appearance rather than an imitation pigment.
Example mixture:
1 litre acrylic coating
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80 g stainless steel powder
This produces a subtle metallic finish suitable for decorative surfaces.
Paint and Coating Additives
Stainless steel powder can also be used to enhance protective coatings.
Advantages include:
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improved abrasion resistance
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increased durability
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corrosion protection
Example mixture:
1 litre epoxy coating
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150 g stainless steel powder
This mixture creates a durable protective metallic coating.
Chemical Filtration Media
Fine stainless steel powders are used to produce sintered filtration materials.
These filters are used in:
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chemical processing plants
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gas purification systems
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laboratory filtration equipment
Because 316 stainless steel resists corrosion, it performs well in harsh chemical environments.
Composite Material Fillers
Metal powders can be incorporated into polymer materials to produce metal-filled composites.
Benefits include:
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improved mechanical strength
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enhanced thermal conductivity
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increased density
Example mixture:
1 litre epoxy resin
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250 g stainless steel powder
This creates a strong composite suitable for industrial prototypes and specialist materials.
Laboratory and Research Applications
Universities and research laboratories frequently use stainless steel powder for:
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corrosion studies
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filtration experiments
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powder metallurgy research
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composite material testing
The small packaging sizes allow accurate measurement during experiments.
Powder Metallurgy Applications
Powder metallurgy is a manufacturing process where metal powders are compacted and heated to form solid metal components.
Stainless steel powders are used to produce:
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structural components
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mechanical parts
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industrial tools
Because atomized powders have consistent particle shapes, they compact more effectively during manufacturing.
Creating DIY Metallic Coatings
Many artists and makers use stainless steel powder to produce metallic finishes on decorative objects.
Example coating formula:
For 1 litre of epoxy resin:
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1 litre clear epoxy
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200 g stainless steel powder
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appropriate curing agent
Once cured, the surface can be polished to reveal a metallic texture.
Handling and Storage
Fine metal powders should always be handled with care.
Recommended practices include:
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working in a well-ventilated area
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avoiding inhalation of powder dust
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wearing gloves and protective equipment
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storing powder in sealed containers
Dry storage conditions help maintain good powder flow.
Packaging and Supply Options
The stainless steel powder is supplied in sealed 100 g bags, allowing flexible purchase quantities.
Available order sizes include:
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100 g
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200 g
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300 g
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400 g
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500 g
This packaging allows customers to purchase small quantities for testing or larger quantities for production.
Where to Buy Stainless Steel Powder UK Online
If you are looking where to buy stainless steel powder UK online, you can purchase high-quality atomized stainless steel powder directly from HD Chemicals.
Product page:
where to buy stainless steel powder UK online
https://shop.hdchemicals.co.uk/collections/metal-powders/products/stainless-steel-metal-powder-atomized
HD Chemicals supplies a wide range of laboratory chemicals, metal powders, and specialist materials for industrial and research use.
Visit the main supplier page:
https://shop.hdchemicals.co.uk/
Frequently Asked Questions
What is stainless steel powder used for?
It is used in coatings, filtration systems, composite materials, powder metallurgy, and laboratory research.
What grade of stainless steel is this powder?
This powder is made from 316 stainless steel, which offers excellent corrosion resistance.
What is the particle size?
Approximately 70% of particles are smaller than 45 µm.
What colour is stainless steel powder?
The powder appears metallic grey.
Can stainless steel powder be mixed with paint?
Yes. Typical mixtures range from 50 g to 200 g per litre of paint.
What is the melting point of stainless steel powder?
Approximately 1400 °C.
Why is molybdenum added to stainless steel?
Molybdenum improves resistance to chloride corrosion and pitting.
Is stainless steel powder safe to handle?
Yes, when handled responsibly using appropriate protective equipment.
What packaging sizes are available?
The powder is supplied in 100 g sealed bags, with order quantities up to 500 g.
Where can I buy stainless steel powder in the UK?
You can purchase it directly from: