Abrasive Grains: Purity 95-99.9% depending on grade

Component Specifications

Definition

Abrasive grains are precisely manufactured mineral or synthetic particles with controlled size, shape, and hardness that serve as the cutting elements in bonded abrasive tools like grinding wheels. They perform material removal through micro-cutting action when pressed against a workpiece at high speeds, with their properties determining cutting efficiency, surface finish quality, and tool life.

Working Principle

Abrasive grains function through mechanical micro-cutting and fracture mechanisms. When a grinding wheel rotates at high speed, individual grains engage with the workpiece surface, removing material through shearing and plowing actions. As grains wear or fracture, fresh cutting edges are exposed, maintaining cutting efficiency. The process involves three phases: grain penetration, chip formation, and grain wear/fracture.

Materials

Common materials include aluminum oxide (Al₂O₃), silicon carbide (SiC), cubic boron nitride (CBN), and diamond. Aluminum oxide is general-purpose for ferrous metals; silicon carbide is for non-ferrous metals and non-metallics; CBN and diamond are superabrasives for hard materials like hardened steel and ceramics.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Shape	Angular, blocky, or rounded
Purity	95-99.9% depending on grade
Hardness	Mohs 9-10 for conventional, 10 for superabrasives
Grain Size	F4-F2200 (coarse to fine)
Fracture Toughness	High for durable grains, low for self-sharpening

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 8486, ISO 6106, DIN 69100, DIN 69101

Parent Products

This component is used in the following industrial products

Grinding Wheel

A rotating abrasive tool used for material removal and surface finishing in grinding operations.

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Engineering Analysis

Risks & Mitigation

Grain fracture causing workpiece damage
Inhalation of abrasive dust
Improper grain selection leading to poor surface finish or excessive wheel wear
Thermal damage to workpiece from incorrect abrasive properties

FMEA Triads

Trigger: Excessive grinding pressure or incorrect grain hardness
Failure: Premature grain fracture or dulling
Mitigation: Select grains with appropriate fracture toughness; optimize grinding parameters (speed, feed, coolant)

Trigger: Incompatible grain-material pairing
Failure: Rapid wheel wear or workpiece burning
Mitigation: Match abrasive type to workpiece material (e.g., Al₂O₃ for steel, SiC for aluminum)

Trigger: Contaminated or inconsistent grain quality
Failure: Unpredictable grinding performance and surface defects
Mitigation: Source from certified suppliers; implement incoming quality control per ISO 8486

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Grain size distribution within ±5% of nominal size per ISO 8486; chemical purity ≥95% for standard grades

Test Method

Sieving analysis per ISO 8486-1 for grain size; hardness testing via Knoop or Vickers methods; fracture testing via single-grain compression

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Abrasive Grains

Manufacturer profiles associated with Abrasive Grains.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What is the difference between aluminum oxide and silicon carbide abrasive grains?

Aluminum oxide grains are tougher and better for grinding ferrous metals like steel, while silicon carbide grains are harder and sharper, making them suitable for non-ferrous metals, ceramics, and non-metallic materials.

How does grain size affect grinding performance?

Coarse grains (larger grit numbers like F24-F60) remove material faster but produce rougher surfaces. Fine grains (smaller grit numbers like F180-F1200) create smoother finishes but remove material more slowly.

What are superabrasive grains?

Superabrasives include cubic boron nitride (CBN) and diamond grains, which are significantly harder than conventional abrasives. CBN is used for hard ferrous metals, while diamond is for non-ferrous metals, ceramics, and composites.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Abrasive Grains