Walnut shell abrasive
The Bio-Solution for Delicate Cleaning, Deburring & Polishing
- NON-DAMAGING: Mohs Hardness 3.5. Cleans without etching or pitting the substrate.
- BIODEGRADABLE & SAFE: Non-toxic, free of heavy metals and silica.
- LONG-LASTING: Tough angular grains resist breakdown, allowing multiple recycles.
- VERSATILE GRADES: From coarse grit (6/10 Mesh) for cleaning to fine flour (100+ Mesh) for polishing.
- Meets GSA Specification AA-1722 Type 2 (Black Walnut).
- Military Specification MIL-G-5634 Type 3.
- Compliant with TSCA, SARA, and other regulations; not subject to hazardous classifications.
TECHNICAL SPECIFICATIONS
| Property | Value | Notes |
|---|---|---|
| Material | Natural Walnut Shell | Organic, derived from ground or crushed shells |
| Color | Light Brown to Dark Brown | Typical appearance |
| Specific Gravity | 1.2 – 1.4 | |
| Hardness | 2.5 – 3.5 Mohs | Soft abrasive suitable for delicate surfaces |
| Moisture Content | ≤ 11% by weight | |
| pH | 4.0 – 7.5 | Neutral to slightly acidic |
| Bulk Density | Approximately 40-50 lbs/ft³ (0.64-0.80 g/cm³) | Lightweight for easy handling |
| Flash Point | 380°F (193°C) | Combustible dust hazard in high concentrations |
| Solubility | Insoluble in water | Slight solubility in water or alcohol |
| Chemical Composition | Nitrogen: 0.10%, Cellulose: 40-60%, Lignin: 20-30%, Ash: 1.5%, Others (Toluene Solubility, Methoxyl, Chlorine): Trace | Natural organic composition |
Available Grades and Particle Sizes
| Grade | Mesh Size | Particle Size (mm) | Typical Use |
|---|---|---|---|
| Extra Coarse | 4/6, 6/10 | 3.35 – 4.75 | Heavy carbon removal, soot, and dirt |
| Coarse | 8/12, 12/20 | 1.70 – 2.36 | General blasting, paint removal |
| Medium | 14/30, 18/40, 20/30 | 0.56 – 1.40 | Surface preparation, deburring |
| Fine | 20/40, 35/60, 40/60 | 0.25 – 0.85 | Polishing, delicate cleaning (e.g., engines, jewelry) |
| Extra Fine/Flour | 40/100, 60/100, 60/200, -100, -200, -325 | <0.425 (micron range) | Filtration, cosmetics, fine polishing |
- *Custom sizes available upon request.
Application areas
Non-Damaging Dry Air Blasting
Vibratory Polishing & Deburring
Oil Industry - Lost Circulation Material
Industrial Water Filtration
PACKAGING AND LOGISTICS
Standard Packaging: 50 lb (22.7 kg) paper bags or 2,000 lb (907 kg) mini bulk bags.
Moisture-proof lining and palletization for international transport, ensuring product integrity during long-haul shipping.
Custom packaging available to meet buyer logistics needs, with labeling compliant to global trade standards.
Safety and Handling
- Storage: Store in a cool, dry, well-ventilated area away from ignition sources and oxidizing agents. Keep containers closed.
- Hazards: Non-hazardous material; may form combustible dust in air. Potential for mechanical irritation to eyes, skin, or respiratory tract. Possible allergic reaction in individuals sensitive to tree nuts.
- PPE: Safety glasses/goggles, gloves, and dust mask if exposure limits exceeded (nuisance dust: 10 mg/m³ total, 5 mg/m³ respirable).
- First Aid: Flush eyes/skin with water; move to fresh air for inhalation; seek medical attention if needed.
- Disposal: Dispose as non-hazardous solid waste per local regulations; biodegradable.
- Transport: Not regulated.
Ready to enhance your operations with our premium Walnut Shell Abrasive?
Inquire now for competitive pricing, free samples, or customized solutions tailored to your international needs. Contact our sales team today to place an order or discuss bulk shipments—let’s get started on your project!