Comparison Table of Fine-Size Metal Bond Synthetic Diamond Powder (80/100–325/400 Mesh)
This table contrasts the 4 core SND-G grades (MBD4–MBD10 equivalents) to help you select the right grit for precision grinding, polishing, and tool manufacturing in NA/EU markets.
| Comparison Dimension | SND-G20 (Equiv. MBD4) | SND-G30 (Equiv. MBD6) | SND-G40 (Equiv. MBD8) | SND-G60 (Equiv. MBD10) |
| Core Crystal & Toughness | Mix of regular + angular blocky crystalsMedium-low toughnessVickers Hardness: 6,200–6,500 HV | Improved regular cuboctahedra crystalsMedium toughnessVickers Hardness: 6,500–6,800 HV | Highly regular cuboctahedra crystalsMedium-high toughnessVickers Hardness: 6,800–7,200 HV | Dominant cuboctahedra crystals (polished faces)High toughnessVickers Hardness: 7,200–7,500 HV |
| Key Technical Specs | – Purity: ≥99.5% carbon- Thermal stability: Up to 750°C- Size tolerance: ±8%- Crystal uniformity: 65–70%- Impact resistance: 8–10 N | – Purity: ≥99.6% carbon- Thermal stability: Up to 800°C- Size tolerance: ±7%- Crystal uniformity: 75–80%- Impact resistance: 10–12 N | – Purity: ≥99.7% carbon- Thermal stability: Up to 850°C- Size tolerance: ±6%- Crystal uniformity: 85–90%- Impact resistance: 12–15 N | – Purity: ≥99.8% carbon- Thermal stability: Up to 900°C- Size tolerance: ±5%- Crystal uniformity: 90%+- Impact resistance: 18–22 N |
| 80/100–325/400 Mesh Use Cases | 80/100 mesh: Aluminum extrusion deburring325/400 mesh: Soft metal pre-polishing | 80/100 mesh: Carbide rough sharpening325/400 mesh: Glass edge polishing | 80/100 mesh: Glass core drilling325/400 mesh: Decorative glass engraving | 80/100 mesh: Granite rough grinding325/400 mesh: Optical glass fine polishing |
| NA/EU Primary Applications | • NA: 6061 aluminum construction framing grinding• EU: Mild steel automotive bracket deburring• Both: Brass plumbing fixture pre-finishing | • NA: Shower door glass beveling (3/8”/10mm)• EU: CNC carbide insert sharpening (automotive)• Both: Neodymium magnet polishing (electronics) | • NA: Architectural glass core drilling (1/2”/12mm holes)• EU: Furniture glass pencil edging• Both: Decorative wine bottle engraving | • NA: Granite countertop electroplated polishing• EU: Porcelain tile rectified edge finishing• Both: Optical glass lens grinding (EN 12150 compliant) |
| Performance Highlights | – MRR*: 12–15 cm³/min (aluminum)- 15% faster than generic MBD4- Cost-effective for high-volume low-precision tasks | – Surface finish: Ra ≤2.0μm (glass/carbide)- Eliminates post-grinding polishing- 15% longer life than SND-G20 | – Tool life: 30% longer than SND-G30- Stable at 850°C (prolonged glass grinding)- Low wear rate: ≤0.5%/40hrs | – Tool life: 40% longer than SND-G40- Surface finish: Ra ≤1.2μm (optical glass)- Resists softening at 900°C (hard stone grinding) |
| Recommended Tool Types | Metal bond grinding wheels (NA: 10”/250mm; EU: 250mm)Low-load sanding discs (5”/125mm) | Glass beveling wheels (NA: 8”/200mm; EU: 200mm)Carbide honing bits (1/8”/3mm) | Glass core drills (NA: 1/2”/12mm; EU: 12mm)Engraving tools (1/16”/1.5mm) | Electroplated diamond pads (NA: 7”/175mm; EU: 175mm)Optical glass polishing tools (2”/50mm) |
| Cost Position (NA/EU) | Ultra-value (85–90% of G30 cost)NA: \(1.20–\)1.30/lb; EU: €1.20–€1.30/kgMOQ: 5lb/5kg | Mid-value base (100% reference cost)NA: \(1.35–\)1.45/lb; EU: €1.35–€1.45/kgBulk discount: 5% (25lb/25kg) | Mid-premium (125–130% of G30 cost)NA: \(1.70–\)1.80/lb; EU: €1.70–€1.80/kgBulk discount: 8% (50lb/50kg) | Premium (160–170% of G30 cost)NA: \(2.15–\)2.25/lb; EU: €2.15–€2.25/kgBulk discount: 12% (100lb/100kg) |
| Key NA/EU Customer Benefit | “Cost-effective for high-volume metal grinding—no overpaying for precision” | “Smooth glass/carbide finishes = less rework for precision shops” | “Medium-load workhorse—handles glass drilling/engraving with consistency” | “Premium durability for hard materials—ideal for luxury stone/optical glass markets” |
| Best For (NA/EU Businesses) | Aluminum extrusion shops, mild steel fabricators, low-cost tool brands | Glass shower door manufacturers, CNC carbide shops, electronics magnet producers | Architectural glass installers, decorative glass makers, mid-tier tool brands | Granite countertop companies, optical glass labs, premium ceramic tile manufacturers |
Glossary
- MRR: Material Removal Rate (tested on NA 6061 aluminum, standard for construction/automotive).
- Mesh Note: 80/100 mesh (150–180μm) = rough grinding; 325/400 mesh (38–45μm) = fine polishing (NA/EU precision standards).
