Silicon nitride is sold in several forms (powder, sintered parts, coatings), so price varies widely with form, purity, quantity, and application.
Indicative Price Ranges (Late 2024 / Early 2025)
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Technical grade (~92–95% Si₃N₄)
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Used for ceramic sintering, refractories
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High‑Purity Powder (> 99% Si₃N₄)
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For advanced ceramics, electronics
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Sintered Silicon Nitride Parts (e.g., bearings, rollers)
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Complex shapes, industrial grade
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Machined components cost more
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Hot‑Pressed Si₃N₄ (for cutting tools, armor)
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Depends on size, tolerances
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Silicon Nitride Coatings
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$50 – 200 / m² (plus setup)
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Thin film, specialized use
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Prices are FOB manufacturer or distributor, and can shift with raw material (silicon powder, nitrogen gas) and energy costs.
Bulk orders (ton lots of powder) receive lower per‑kg pricing; small R&D quantities carry a premium.
Compared with common engineering materials:
More expensive than metals like steel (0.5–2/kg)oraluminum(2–4/kg).
Cheaper than some ultra‑high‑performance ceramics like cubic boron nitride (CBN) or certain diamond composites.
Moderately expensive as an engineering ceramic:
Powder: $10–60/kg - comparable to other technical ceramic powders (e.g., alumina, zirconia).
Finished parts: $100–1,000+/kg - reflects high processing cost (hot pressing, sintering, precision machining).
Energy‑intensive production (high‑temperature sintering/hot pressing).
Need for high purity and fine powder to achieve excellent mechanical properties.
Complex shaping and machining of sintered parts (hard, brittle material).
Silicon nitride is valued for its high strength, toughness, hardness, thermal shock resistance, and low density. Key applications:
A. Automotive & Engine Components
Diesel engine glow plugs – Resists high temperature and thermal cycling.
Turbocharger rotors – Lightweight, high strength, withstands high rpm and temperature.
Exhaust manifold components – Excellent thermal shock resistance.
B. Bearings & Rollers
Hybrid bearings (Si₃N₄ balls with steel races) – Higher speed, longer life, corrosion resistance.
Industrial rollers – For high‑temperature conveyors and kilns.
C. Cutting Tools & Wear Parts
Cutting inserts – For machining cast iron, nickel‑based superalloys.
Wear plates, dies – Abrasion and corrosion resistance in harsh environments.
D. Aerospace & Defense
Gas turbine components – Combustion chambers, vanes (lightweight, high strength).
Armor tiles – Ballistic protection with toughness advantage over other ceramics.
E. Electronics & Semiconductors
Substrates & chip carriers – High thermal conductivity, electrical insulation.
Wafer processing parts – Susceptor rings, electrostatic chucks (resist plasma and chemicals).
F. Medical Implants
Orthopedic devices – Hip joints, bone screws (biocompatible, wear‑resistant).
G. Refractories & Powder Metallurgy
Crucibles, furnace fixtures – For melting non‑ferrous metals.
Metal forming dies – Long life under high stress and temperature.
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Powder: 10–60/kg;Parts:100–1,000+/kg
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More than metals, moderately expensive as advanced ceramic
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High strength, toughness, hardness, thermal shock resistance, lightweight
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Automotive engines, turbochargers, bearings, cutting tools, aerospace parts, electronics substrates, medical implants, refractories
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Bottom line: Silicon nitride is not cheap, especially in finished form, but its unique combination of properties justifies the cost in high‑performance, high‑reliability applications where metals or other ceramics would fail.
Visit https://www.metal-alloy.com/ to learn more about the product. If you would like to learn more about the product price or are interested in purchasing, please email market@zanewmetal.com. We will get back to you as soon as we see your message.
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