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Custom 99 Alumina Ceramic Flanged Dowel Pin

Basic Information

Place of Origin:	CHINA
Brand Name:	YH
Certification:	ISO

Minimum Order Quantity:	10
Price:	Negotiated
Packaging Details:	by carton
Delivery Time:	10-30days
Payment Terms:	L/C,D/A,D/P,T/T,Western Union
Supply Ability:	10000pcs per month

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Detail Information

Material:	99% High-Purity Technical Alumina (Al₂O₃ ≥ 99.5%)	Product Name:	Ceramic Flanged Dowel Pin / Tapered Locating Pin
Surface Hardness:	91 HRA / 1550 HV1 (Mohs Hardness 9 Grade)	Anti-Weld Slag:	100% Non-Adhesive To Molten Weld Spatter
Coaxiality & Runout:	Up To 0.002 Mm TIR (Precision Cylindrical Ground)	Mounting Base Flatness:	Up To 0.002 Mm (Mirror Lapped Ground Base)
Hole Diameter Tolerance:	Up To ±0.003 Mm (120° Symmetric 3-Hole Flange)	Flexural Strength:	320 MPa / Compressive Strength 2300 MPa
Max Operating Temp:	Up To 1400°C (High Thermal Stability)	Dimensions:	100% Customized To Customer CAD Technical Drawings

Product Description

Product: High-Purity 99% Alumina Ceramic Flanged Dowel Pin / Tapered Locating Pin
Material Grade: High-Purity Technical Alumina Ceramics (Al2O3 >= 99.5%)
Manufacturer: Hunan Yuanhong New Materials Co., Ltd. (yhxceramic), Loudi, Hunan, China
Established: 2016 | Facility Footprint: 8,000 sqm | Production Lines: 15 | Workforce: 82

Custom 99 Alumina Ceramic Flanged Dowel Pin

Key Selling Points

Selling Point 1 — Extreme Abrasive Wear Resistance (91 HRA / Mohs 9) & 10× Lifespan

Sintered from high-purity 99.5% Al₂O₃ alumina ceramic powder under high-temperature tunnel kilns. Delivers an extreme surface hardness of 91 HRA (1550 HV1), outlasting hardened tool steel (HRC 60) and carbide pins by more than 5–10 times in abrasive automated positioning fixtures.

Selling Point 2 — Zero Weld Spatter Adhesion & Spark Breakdown Immunity

Completely non-magnetic, non-conductive, and bio-inert with dielectric breakdown strength up to 20 kV/mm. Molten metal weld slag and spatter cannot bond to the dense ceramic mirror surface, completely eliminating manual cleaning, short circuits, and fixture jamming in robotic spot welding lines.

Selling Point 3 — Micro-Precision Coaxial Alignment (Tolerances Down to 0.002mm)

Precision-machined with 5-axis CNC diamond grinding machinery. Achieves locating cylinder coaxiality down to 0.002mm TIR and flange base flatness within 0.002mm, guaranteeing zero-backlash repeatable positioning and rock-solid mounting rigidity.

Selling Point 4 — Chamfered Tapered Lead-In Nose & 120° 3-Hole Flange Base

Ergonomically engineered with a smooth conical lead-in nose for rapid, jam-free robotic workpiece loading. Features an enlarged 3-hole flange base with 120° symmetric bolt counterbores for rigid, vibration-proof mechanical fastening onto tooling plates.

Selling Point 5 — Multi-Industry Applications: Welding Fixtures, Kiln Tooling & Alignment

Trusted across severe industrial sectors: automotive body-in-white (BIW) robotic welding fixture locating pins, high-temperature vacuum sintering kiln positioning posts (up to 1400°C), semiconductor wafer transfer alignment pins, and precision stamping die guide pins.

Selling Point 6 — Factory Direct Sourcing & 100% CMM Precision Inspection

Manufactured in Hunan Yuanhong's 8,000㎡ precision technical ceramics facility under strict ISO9001 quality systems. Every piece is 100% verified using 3D coordinate measuring machines (CMM) and optical profile projectors. Rapid custom prototypes delivered within 3–7 business days under bilateral NDA protection.

Custom 99 Alumina Ceramic Flanged Dowel Pin

Certified Physical, Thermal & Mechanical Properties:
- Material Purity: Al2O3 >= 99.5% (Dense fine-grain polycrystalline structure)
- Density: 3.90 g/cm3 (Zero open porosity, gas-tight sintered body)
- Rockwell Hardness: 91 HRA (Mohs Hardness 9, extreme abrasive wear resistance)
- Vickers Hardness: 1550 HV1
- Flexural Strength: 320 MPa (High dynamic impact load bearing)
- Compressive Strength: 2300 MPa (Super high axial crush resistance)
- Maximum Use Temperature: Up to 1400 deg C (Continuous in oxidizing/inert atmosphere)
- Thermal Conductivity: 32 W/m.K
- Thermal Expansion Coefficient: 6.8 x 10^-6 K^-1 (20-1000 deg C)
- Dielectric Strength: Up to 20 kV/mm (Electrical insulator, prevents electrical arc shorting)
- Volume Resistivity at 20 deg C: 10^15 Ohm.cm

Certified Precision Machining Capabilities:
- Coaxiality & Runout: Up to 0.002 mm TIR (Precision cylindrical ground)
- Mounting Datum Flatness: Up to 0.002 mm (Mirror lapped base)
- Flange Bolt Hole Diameter: Up to +/- 0.003 mm
- Taper Angle Tolerance: Custom CNC turned to precise angular specification
- Surface Roughness: Down to Ra 0.1 um (Fine ground cylindrical journal)
- Dimensions: 100% Custom Machined to Customer CAD / Technical Drawings

Structural & Geometric Characteristics:
- Smooth conical tapered lead-in nose for smooth, rapid robotic workpiece insertion
- Precision cylindrical body providing zero-backlash repeatable radial positioning
- Wide circular flange base with 120-degree symmetric 3-hole counterbores for rigid bolt mounting
- Precision ground flat mounting datum base preventing angular tilt or vibration loosening
- Micro-radiused edges and burr-free bevels preventing edge chipping under heavy loading

Functional Advantages in Industrial Tooling:
- Completely eliminates weld slag adhesion and molten metal spatter pitting in spot welding
- Non-magnetic and electrically non-conductive, preventing electrical arc attraction and short circuits
- Multiplies service life by 5 to 10 times compared with hardened tool steel and alloy pins
- Resists thermal shock and mechanical friction in continuous 24/7 automated production cycles

Primary Application Sectors:
- Automotive Body-in-White (BIW): Robotic spot welding fixture pins, sheet metal assembly locating pins
- High-Temperature Kiln Tooling: Vacuum sintering furnace post supports, heat-treatment fixture guides
- Semiconductor Equipment: Wafer handling positioning pins, SMT electronic alignment guides
- Precision Stamping & Tooling: Metal stamping die guide pins, wear-resistant inspection gauges

Custom 99 Alumina Ceramic Flanged Dowel Pin

Quality Control & Assurance:
- Certifications: ISO9001, CE, RoHS, REACH
- Quality Testing: 100% 3D Coordinate Measuring Machine (CMM) & Optical Projector Inspection
- Prototyping Lead Time: 3 to 7 business days
- Production Lead Time: 15 to 20 business days
- Packaging: Form-fitted high-density EPE shock-absorbing foam tray + Export-standard wooden crate
- Confidentiality: Bilateral Non-Disclosure Agreement (NDA) supported for proprietary CAD designs

Application

Primary Application Sectors:
- Automotive Body-in-White (BIW): Robotic spot welding fixture pins, sheet metal assembly locating pins
- High-Temperature Kiln Tooling: Vacuum sintering furnace post supports, heat-treatment fixture guides
- Semiconductor Equipment: Wafer handling positioning pins, SMT electronic alignment guides
- Precision Stamping & Tooling: Metal stamping die guide pins, wear-resistant inspection gauges

Product packaging

1: Individually packed in anti-static foam

2: Vacuum-sealed for moisture protection

3: Labeled with part number, dimensions, and material grade

4: Shock-resistant outer packaging

5: Available in bulk or custom packaging

Custom 99 Alumina Ceramic Flanged Dowel Pin

FAQ

Q1. Do you provide product samples?

Yes, we provide samples subject to availability.

A nominal sample fee may apply in some cases, and shipping costs are borne by the customer.

Q2. What are your accepted payment methods?

We accept T/T (bank transfer) in advance, Western Union, Alipay, and PayPal.

Q3. What is your typical delivery lead time?

Lead times vary depending on product requirements, including material selection, dimensions, and specific manufacturing processes.

Q4. Do you perform quality inspection before shipment?

Yes, we conduct 100% inspection of all goods prior to delivery to ensure they meet specified standards.

Q5. What other ceramic materials do you offer?

We supply a range of advanced ceramic materials,

including Alumina, Zirconia, Aluminum Nitride,Boron Nitride, Silicon Nitride, Machinable Glass Ceramic, and related specialized ceramics.

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Custom 99 Alumina Ceramic Flanged Dowel Pin

Selling Point 2 — Zero Weld Spatter Adhesion & Spark Breakdown Immunity

Selling Point 3 — Micro-Precision Coaxial Alignment (Tolerances Down to 0.002mm)

Selling Point 4 — Chamfered Tapered Lead-In Nose & 120° 3-Hole Flange Base

Selling Point 5 — Multi-Industry Applications: Welding Fixtures, Kiln Tooling & Alignment

Selling Point 6 — Factory Direct Sourcing & 100% CMM Precision Inspection

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