Description:
SND820 Saw Grit Diamond is engineered for high-speed material removal in light-duty, medium-low load applications. Its optimized semi-cubic crystal structure delivers efficient cutting while reducing friction, making it perfect for DIY projects and cost-effective tool manufacturing.
Key Features:
- Material Removal Rate (MRR): Achieves 15-20 cm³/min, 25% faster than standard light-duty grits, perfect for quick tasks like concrete edge smoothing and trimming soft brick.
- Basic Thermal Stability: Performs at temperatures up to 750°C, suitable for short-duration grinding without advanced cooling systems.
- Cost-Effective: Priced 10-15% lower than SND830, making it ideal for one-off projects or low-volume production.
- Cost-Efficient for DIY and Medium-Low Load Tasks: Perfect for making disposable, budget-friendly DIY tools like mini-grinding wheels and handheld cutting blades for medium-low load applications.
Available Grit Sizes:
18/20, 20/25, 25/30, 30/35, 35/40, 40/45, 45/50, 50/60, 60/70, 70/80 mesh.
FAQ:
Q1: What is SND820 best used for?
A: SND820 is ideal for quick, light-duty tasks in medium-low load applications, where speed and cost are prioritized. It excels in DIY projects, home renovations (like smoothing concrete), small-scale craft production (such as cutting glass tiles), and disposable tools (e.g., one-time use blades for backyard repairs).
Q2: Can SND820 handle heavy-duty cutting tasks?
A: No, SND820 is designed for light tasks only, with limited thermal stability and toughness. For heavy-duty cutting, consider SND860 or SND890 for better performance. Using SND820 for tough materials will lead to rapid wear and uneven cuts.
Q3: What bonding systems work with SND820?
A: SND820 is compatible with low-cost bonding systems like resin bonding (for DIY sandpapers or small blades) and electroplating (for mini handheld tools). Its semi-cubic shape ensures good adhesion without the need for advanced sintering.
Q4: How does SND820’s efficiency compare to SND830?
A: SND820 offers a 25% faster material removal rate than SND830 (15-20 cm³/min vs. 12-15 cm³/min for soft limestone). However, it has a shorter tool life, making it ideal for one-off projects or light-use applications, while SND830 suits repeated tasks.
SND820 vs. SND830 vs. SND840 vs. SND860 vs. SND890 Saw Grit Diamond: 5-Way Comparison Table
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Comparison Dimension
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SND820 (Ultra-Budget Light-Duty)
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SND830 (Entry-Level Routine)
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SND840 (Mid-Tier Value)
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SND860 (Mid-Tier Toughness)
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SND890 (Premium Extreme)
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Core Crystal Structure
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Relatively regular semi-cubic; efficiency-optimized shape
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Semi-blocky; cost-optimized shape
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Complete cube-octahedron; uniform wear design
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Blocky cube-octahedron; toughness-focused structure
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Highly regular cube-octahedron; minimal inclusions; ultra-stable
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Key Technical Specs
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– Purity: ≥99.4% carbon- Hardness: 5,500–6,000 HV- Thermal resistance: Up to 750°C- Size tolerance: ±7%- Material Removal Rate (MRR): 15–20 cm³/min (soft stone)
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– Purity: ≥99.5% carbon- Hardness: 6,000–6,500 HV- Thermal resistance: Up to 800°C- Size tolerance: ±6%- Impact resistance: 8–10 N
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– Purity: ≥99.7% carbon- Hardness: 6,800–7,200 HV- Thermal resistance: Up to 900°C- Size tolerance: ±5%- Abrasion loss: ≤0.8% (50hrs)
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– Purity: ≥99.8% carbon- Hardness: 7,500–8,000 HV- Thermal resistance: Up to 1,000°C- Size tolerance: ±4%- Impact resistance: 15–20 N
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– Purity: ≥99.9% carbon- Hardness: >90 HRC- Thermal resistance: Up to 1,200°C- Size tolerance: ±5%- Compressive strength: >20 GPa
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Grit Size Range
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18/20 – 50/60 mesh (0.250mm – 1.00mm)
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18/20 – 50/60 mesh (0.250mm – 1.00mm)
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18/20 – 50/60 mesh (0.250mm – 1.00mm)
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18/20 – 50/60 mesh (0.250mm – 1.00mm)
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20/25 – 45/50 mesh (0.425mm – 1.00mm)
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Performance Strength
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Speed for light tasks: 25% faster MRR than SND830; lowest upfront cost
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Affordability for routine use: 20% longer life than generic grits; balanced speed/durability
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Wear resistance + value: 18–22% less tool replacement vs. SND830; 85% of SND860’s performance
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Toughness + versatility: 30% less chipping; 20–25% longer life than SND830
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Extreme durability + heat resistance: 30–40% longer life vs. SND860; stable in high-friction tasks
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Primary Application Scenarios
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Ultra-light, fast tasks: • DIY projects (glass tile cutting)• One-off repairs (soft brick trimming)• Disposable mini-blades
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Everyday low-demand tasks: • Home renovation (concrete grinding)• Light stone trimming (limestone)• Low-volume disposable tools
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General-purpose medium tasks: • Standard construction blades• Soft-to-medium rock sampling• High-volume medium-quality tools
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Tough multi-industry tasks: • Geological exploration (sandstone/quartz)• Medium-hard ore mining• Construction (asphalt cutting)
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Heavy-duty high-stress tasks: • Deep mining (hard ore)• Hard rock drilling (granite/basalt)• Tunnel construction
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Recommended Tool Types
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Resin-bonded DIY sandpapers, mini handheld blades, disposable craft tools
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Resin-bonded grinding wheels, standard disposable blades, small workshop tools
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Metal-matrix standard blades, general core bits, mid-range grinding wheels
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Metal-matrix tough blades, mining core bits, industrial grinding wheels
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Metal-matrix heavy-duty blades, high-torque diamond wires, extreme-condition core bits
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Cost Position
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Ultra-budget (10–15% lower than SND830)
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Budget (lowest upfront cost among routine grades)
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Mid-value (15–20% higher than SND830)
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Mid-toughness (15–20% higher than SND840)
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Premium (30–40% higher than SND860)
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Key Customer Benefit
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“Fast, cheap for one-off tasks”—no overinvestment in infrequent use
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“Affordable for high-volume, low-demand tools”—reduces initial investment
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“Balances durability and cost”—higher margins for medium-quality tool manufacturers
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“One grit for multiple tough tasks”—simplifies inventory; avoids overpaying for premium
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“Minimizes downtime in harsh conditions”—reliable for critical, high-cost operations
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Best For
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Hobbyists, DIY enthusiasts, one-off repair services
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Small DIY businesses, budget-conscious workshops, low-volume disposable tool brands
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Mid-sized tool manufacturers, general construction firms, standard geology labs
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Mining contractors, large construction companies, multi-purpose tool brands
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Deep mining operations, hard rock exploration firms, premium tool manufacturers
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