High-Temperature Wear-Resistant Ceramic Parts | Custom Design

High-Temperature Wear-Resistant Ceramic Parts

Engineered for sustained performance above 1,000°C — where metals oxidize, deform, and fail. Our high-temperature wear-resistant ceramic parts are precision-manufactured to exacting tolerances for the most demanding thermal and abrasive service environments, including custom-engineered ceramic structure parts for critical load-bearing applications.

We produce custom ceramic components from alumina, zirconia, silicon carbide, and silicon nitride across all major forming processes: isostatic pressing, dry pressing, and injection molding — sintered and finish-machined in-house to ±0.01 mm.

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Technical Specification Snapshot

Reference property ranges for standard commercial grades. Exact values depend on material selection and sintering parameters. Contact engineering for grade-specific datasheets.

Property	Alumina (Al₂O₃ 96%)	Zirconia (ZrO₂ TZP)	Silicon Carbide (SiC)	Silicon Nitride (Si₃N₄)
Density (g/cm³)	3.70 – 3.90	6.00 – 6.10	3.10 – 3.21	3.20 – 3.30
Hardness (HV 0.5)	1,400 – 1,600	1,200 – 1,400	2,400 – 2,800	1,450 – 1,700
Flexural Strength (MPa)	300 – 380	900 – 1,200	380 – 500	700 – 1,000
Fracture Toughness (MPa·m½)	3.5 – 4.5	8.0 – 10.0	3.0 – 4.0	5.0 – 7.5
Max. Operating Temp. (°C)	1,600	1,000 (in air)	1,650 (inert atm.)	1,400
Dielectric Strength (kV/mm)	10 – 16	8 – 12	N/A (conductor)	12 – 15
Thermal Shock Resistance (ΔT°C)	Moderate (~200)	Good (~300)	Excellent (~500)	Excellent (~600)
Surface Finish Ra (µm)	0.4 – 1.6	0.2 – 0.8	0.4 – 1.2	0.4 – 1.2

Why Ceramics Excel in Extreme Heat

Advanced technical ceramics maintain dimensional stability and mechanical integrity at temperatures where ferrous metals and superalloys begin to creep, oxidize, or lose hardness — as detailed in our comprehensive guide to advanced ceramics properties, types, and applications.

. The covalent and ionic bonding structures that define oxide and non-oxide ceramics resist thermal softening, chemical attack, and tribological degradation simultaneously — a combination no metallic material can match cost-effectively at sustained temperatures above 800°C.

Chemical Composition & Microstructure

Alumina (Al₂O₃) in 96% and 99.7% grades offers a fine-grained, dense microstructure with excellent electrical insulation and abrasion resistance. Zirconia (ZrO₂), stabilized with yttria (Y-TZP), undergoes stress-induced phase transformation toughening that provides fracture toughness values comparable to hardened tool steel. Silicon carbide (SiC) — produced in sintered or reaction-bonded variants — delivers the highest hardness and thermal conductivity in this group, ideal for abrasive sliding contact at high temperatures. Silicon nitride (Si₃N₄) offers superior thermal shock resistance and is the preferred material in cyclically loaded thermal environments.

Manufacturing Processes

All components begin with feedstock preparation: milling, spray drying, and binder formulation tailored to the forming method. Dry pressing is applied to simpler geometries with tight dimensional control requirements. Cold isostatic pressing (CIP) produces near-net-shape blanks for rotationally symmetric or complex profiles that require uniform green density. Ceramic injection molding (CIM) is used for high-volume, intricate geometries with internal features. All green bodies are sintered in controlled-atmosphere kilns — hydrogen, nitrogen, or vacuum — at temperatures between 1,400°C and 1,800°C depending on material. Post-sinter CNC diamond grinding and lapping achieve final dimensional tolerances to ±0.005 mm where required.

Available Grades & Surface Finishes

Standard grades include: Al₂O₃ 96%, Al₂O₃ 99.7%, ZrO₂ 3Y-TZP, ZrO₂ 8Y-FSZ, SSiC, RBSiC, Si₃N₄ GPS, and Si₃N₄ SRBSN. Surface finishing options span as-fired (Ra 1.6–6.3 µm), ground (Ra 0.4–1.6 µm), lapped (Ra 0.1–0.4 µm), and polished (Ra < 0.05 µm). Metallization, laser marking, and edge chamfering are available on request.

Applications in Steel & Metallurgy

High-temperature wear-resistant ceramic parts are critical wherever molten metal, aggressive slags, extreme abrasion, or combined thermal-mechanical loading is present. Below are the primary industry segments served and the engineering rationale for ceramic selection in each.

Steel & Metallurgy

In continuous casting lines, alumina and zirconia nozzles, stopper rods, and submerged entry nozzles (SENs) resist molten steel at temperatures exceeding 1,550°C while withstanding slag corrosion and thermal cycling from ladle-to-ladle operation. Sintered high heat ceramic parts in this application eliminate the erosion failure modes common in graphite-bonded refractories at equivalent service intervals.

Thermal Processing Equipment

Kiln furniture — setters, saggers, posts, and beam supports — manufactured from mullite-bonded alumina or SSiC survives repeated thermal cycles from ambient to 1,600°C without creep or warpage. Industrial heat resistant parts for roller hearth and pusher furnaces are machined to close tolerances so part-to-part contact geometry is maintained across thousands of firing cycles, protecting the workpiece and extending furnace maintenance intervals.

Pumps, Valves & Fluid Handling

In chemical process and slurry handling applications, silicon carbide pump sleeves, seal rings, and valve seats provide best-in-class performance against particle erosion and corrosive media. Abrasion resistant refractory ceramics in these components outlast hardened stainless and tungsten carbide in high-velocity particulate flows at temperatures exceeding 600°C, particularly when engineered as advanced refractory ceramics for sustained thermal exposure.

Electronics & Power Generation

Alumina and silicon nitride are specified for burner nozzles, igniter housings, and thermocouple protection tubes in gas turbines and industrial combustion systems. These thermal shock resistant ceramics must withstand rapid heat-up rates exceeding 200°C/min without cracking — a key selection criterion that differentiates Si₃N₄ from standard alumina in cyclic service.

Mining & Mineral Processing

Foundry ceramic components including blast nozzles, wear liners, and cyclone inserts made from sintered alumina or SiC are replacing cast basalt and white iron in applications where combined impact and sliding abrasion would otherwise require frequent replacement. Ceramic parts in this context reduce maintenance downtime by factors of 5 to 15 compared to conventional wear materials.

Material Options: Alumina vs Zirconia

Alumina and zirconia represent the two most frequently specified oxide ceramics for thermal and wear applications. The selection between them is driven primarily by fracture toughness requirements, maximum service temperature, and thermal cycling frequency — not by cost alone.

Feature	Alumina (Al₂O₃ 96–99.7%)	Zirconia (3Y-TZP)
Hardness (HV)	1,400 – 1,600	1,200 – 1,400
Fracture Toughness (MPa·m½)	3.5 – 4.5	8.0 – 10.0
Max. Service Temp. (°C)	Up to 1,600	Up to 1,000 (air)
Thermal Shock Resistance	Moderate	Good (>300°C ΔT)
Flexural Strength (MPa)	300 – 380	900 – 1,200
Relative Material Cost	Lower	Higher (~3–5×)
Electrical Insulation	Excellent	Moderate (low-grade conducts)
Best Used For	High-temp. wear, electrical insulation, kiln furniture	Mechanical wear, cutting tools, precision seals, medical

Alumina is the default selection for static high-temperature wear environments, electrical insulation applications, and kiln furniture where cost-efficiency and temperature capability above 1,200°C are required. Zirconia should be specified when impact loads, cyclically applied stresses, or precision sliding contact are present and service temperature remains below 1,000°C. Where service conditions include both impact and temperatures above 1,000°C, silicon nitride is the technically superior choice at higher cost.

Custom Manufacturing Options

All ceramic components are produced and inspected in-house across the full manufacturing chain. There are no outsourced sintering or machining steps for critical dimensions — process control and dimensional traceability are maintained at each production stage.

In-House Capability

Manufacturing processes available under one roof: dry pressing (up to 800-tonne press force), cold isostatic pressing (CIP, up to 300 MPa), ceramic injection molding, continuous tunnel kiln and batch kiln sintering, 5-axis CNC diamond grinding, coordinate measuring (CMM, up to 0.001 mm resolution), and ultrasonic testing for internal defects in critical components.

Quality Control & Inspection

Dimensional inspection is performed on 100% of precision components using CMM and optical profilometry. Surface roughness is verified per ISO 4287 on finished surfaces. Density is confirmed by Archimedes method against grade specification. Hardness is tested by Vickers indentation per ISO 6507. For structural components in high-consequence applications, ultrasonic C-scan and dye penetrant inspection are available as standard options. Batch traceability is maintained through sintering batch records, raw material CoAs, and serialized inspection reports.

Tolerances & Lead Times

Standard dimensional tolerance for sintered-and-ground components: ±0.02 mm. Precision-lapped critical surfaces: ±0.005 mm. As-sintered near-net-shape components: ±0.3–0.5% of nominal dimension. Standard production lead times: 4–8 weeks for machined components, 2–4 weeks for as-sintered shapes. Prototype and development quantities: 2–4 weeks from approved drawing.

ISO Certification

Production quality management system is certified to ISO 9001:2015. Material testing is conducted in accordance with EN and ASTM standards applicable to advanced ceramics. Full documentation packages are available for aerospace and energy sector procurement.

Manufacturing Authority & Capability

Capability Signal	Detail
Manufacturing Experience	20+ years producing precision technical ceramics for industrial OEMs
Export Markets	Europe, North America, Middle East, Southeast Asia, Japan
Industries Supported	Steel, energy, chemical processing, mining, electronics, medical devices
Custom Engineering Support	DFM review, material selection advisory, prototype-to-production transition
Machining Tolerance Range	±0.005 mm (lapped) to ±0.02 mm (ground standard)
Batch Size Range	1–5 pcs (prototype) to 50,000+ pcs (serial production)
Documentation Available	Material CoAs, CMM reports, sintering records, ISO 9001 cert.

Technical RFQ Form

Need Precision High-Temperature Ceramic Components? Request a Technical Consultation.

Submit your component drawings or specifications for a direct engineering review. Our technical team evaluates material suitability, tolerance feasibility, and volume pricing — and responds within 2 business days.

•        Accepted file formats: DXF, DWG, STEP, IGES, PDF (dimensioned drawings)

•        Include: material preference if known, operating temperature, load type, required quantity

•        For complex assemblies: indicate mating components and clearance requirements

•        Prototype quantities welcome — no minimum order for first article review

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Our engineers review every submission personally. You will receive a technically qualified response, not a generic quote form reply.