Four Relative Friability Grades
Choose from ultra-high to lower-friability grade positions according to abrasive fracture behavior, grinding loads and required grain integrity.
SINODIAM INTERNATIONAL · INDUSTRIAL DIAMOND POWDERS
Resin Bond Diamond Powder for Precision Grinding
SinoDiam SND-R series RVG synthetic diamond grits are developed for manufacturers of resin-bond grinding wheels processing tungsten carbide, cermets, technical ceramics, glass and other suitable hard-and-brittle materials.
Explore four grades with different friability and crystal-characteristic positions. Select the right diamond grit for controlled microfracturing, free-cutting behavior, grain durability and your grinding-wheel requirements.
SND-R
Resin Bond Series
SinoDiam SND-R Series · Synthetic Resin Bond Diamond Grit
01 / SERIES OVERVIEW
Resin Bond Diamond Grits for Industrial Grinding Wheels
Different crystal shapes and friability levels allow grinding-wheel manufacturers to evaluate how diamond grains break down, renew cutting edges and interact with the resin bonding system.
Controlled Self-Sharpening
Suitable abrasive microfracturing can expose fresh cutting edges and support free-cutting performance in properly designed grinding wheels.
Application-Based Bond Selection
Evaluate diamond morphology and grit size alongside resin chemistry, wheel structure, grain retention and grinding conditions.
02 / SND-R PRODUCT PORTFOLIO
Explore SinoDiam Resin Bond Diamond Grades
Four grades positioned for different balances of crystal friability, controlled fracture, grain durability and resin-bond grinding requirements.
R05
Ultra-High Friability
GRADE 01 · EASIEST FRACTURE POSITION
SND-R05
Ultra-High FriabilitySinoDiam's most friable SND-R grade. Intended for grinding-wheel formulations where controlled microfracturing and active renewal of cutting edges are important.
Selection Focus
Low-force precision grinding evaluation, free-cutting action and fine surface-quality requirements.
Explore SND-R05 Details →
R10
High Friability
GRADE 02 · ECONOMY SEMI-BLOCKY
SND-R10
High FriabilityAn economy-oriented, semi-blocky synthetic diamond grit positioned for general-purpose resin-bond grinding applications requiring a practical balance of self-sharpening, grain retention and abrasive cost.
Selection Focus
Cost-conscious grinding-wheel formulations for carbide, ceramics, cermets and glass.
Explore SND-R10 Details →
R15
Medium Friability
GRADE 03 · STANDARD BLOCKY
SND-R15
Medium FriabilityA standard blocky grade positioned for grinding-wheel manufacturers seeking a balance between controlled cutting-edge renewal, crystal durability and wheel-wear requirements.
Selection Focus
Balanced free-cutting action, abrasive integrity and general-purpose grinding performance.
Explore SND-R15 Details →
R20
Higher Toughness
GRADE 04 · TOUGHER GRADE POSITION
SND-R20
Low Friability / Higher Toughness*Positioned at the tougher end of the SND-R series for evaluating greater crystal integrity, controlled fracture and wheel form-retention requirements under demanding grinding conditions.
Selection Focus
Tougher grain behavior, higher grinding-load evaluation and selected PCD-tool grinding applications.
Explore SND-R20 Details →
*SND-R20's low-friability/higher-toughness classification reflects SinoDiam's current series positioning and should be confirmed using product-specific crystal strength and friability data.
03 / TECHNICAL COMPARISON
SND-R Series Friability & Grade Comparison
Compare the relative product positions before reviewing the individual specifications and evaluating a grade in your grinding-wheel formulation.
| Grade | Relative Friability | Crystal Position | Main Selection Priority |
|---|---|---|---|
| SND-R05 | Ultra-High | Highly Friable | Microfracturing & active self-sharpening |
| SND-R10 | High | Economy Semi-Blocky | General-purpose free-cutting & grinding economy |
| SND-R15 | Medium | Standard Blocky | Balanced fracture response & grain integrity |
| SND-R20 | Low* | Higher-Toughness Position* | Grain durability & form-retention evaluation |
The comparison describes intended relative series positioning, not measured friability percentages or guaranteed grinding-wheel performance. *Confirm SND-R20's relative toughness and crystal morphology against grade-specific test records. Available mesh sizes and performance can vary by product grade and application.
04 / INDUSTRIAL APPLICATIONS
Recommended Applications of Resin Bond Diamond Powder
The SND-R series provides candidate diamond abrasives for resin-bond grinding-wheel manufacturers. Material suitability depends on the specific grade, particle size, bond system and operating conditions.
Cemented Carbide Grinding
Resin-bond diamond wheels for tool sharpening, cutting inserts, carbide components and precision tool grinding.
Grade Evaluation: R05–R20Cermet Grinding
Grinding of selected cermets where abrasive fracture, cutting force, grain durability and finished-part integrity must be balanced.
Application-Based Grade SelectionTechnical Ceramic Grinding
Precision grinding of selected hard-and-brittle engineering ceramics, with attention to surface integrity and abrasive-wheel wear.
Application Trials RecommendedPrecision Glass Grinding
Selected glass shaping, edge-grinding and finishing operations using appropriately designed resin-bond diamond wheels.
Particle Size & Finish SelectionPCD Tool Grinding
Evaluation of specialized diamond grinding wheels for PCD cutting tools, taking account of wheel wear, cutting forces and edge quality.
Specialized Wheel EvaluationGrinding Wheel Manufacturing
Diamond abrasive selection for phenolic and polyimide resin-bond formulations, precision wheel geometry and cost-per-part optimization.
Entire Wheel System MattersFor hardened steel and many other ferrous workpieces, cubic boron nitride (CBN) is generally preferred over diamond. Please specify the workpiece material when requesting technical recommendations.
05 / TECHNICAL SELECTION
How to Select the Right Resin Bond Diamond Grade
Select diamond grits according to the entire grinding system, not just a grade label or claimed surface-finish result.
01
Identify the Workpiece
Define carbide composition, ceramic type, glass grade, cermet or PCD material, along with its hardness and brittleness.
02
Define the Grinding Operation
Specify sharpening, stock removal, profile grinding, edge grinding or finishing, including grinding forces and surface requirements.
03
Match Friability to the Bond System
Review grain fracture behavior together with resin chemistry, abrasive concentration, grit size, bond retention and dressing conditions.
04
Validate Grinding Performance
Compare cutting action, grinding force, material removal, finished-part quality, wheel wear, G-Ratio and cost per component.
What about mesh size and bond compatibility?
The earlier SND-R product catalogue references a nominal 60/70–325/400 mesh range. This is a series-level starting point, not confirmation that every individual grade is available in every mesh size.
Resin bonds, including selected phenolic and polyimide formulations, are the primary application direction. Vitrified-bond suitability should be evaluated separately according to bond chemistry, firing conditions and the specific diamond grade.
For a reliable recommendation, provide the target mesh specification or grading standard, workpiece, wheel formulation, grinding conditions and expected performance.
06 / WHY SINODIAM
Why Choose SinoDiam Resin Bond Diamond Grits?
SinoDiam focuses on synthetic industrial diamond materials and application-oriented technical communication for international abrasive-tool manufacturers.
Four Grade Positions
Compare the SND-R grades by intended friability, abrasive fracture behavior and crystal integrity.
Application-Based Discussion
Evaluate candidate grades according to workpiece materials, wheel construction and required grinding behavior.
Specification Communication
Discuss mesh designation, particle-size requirements and product-specific technical information.
Industrial Diamond Experience
Specialized synthetic diamond product categories for grinding, cutting and precision abrasive manufacturing.
International Supply Inquiries
Discuss product grades, requested quantities, destination countries and delivery requirements.
Technical Grade Selection
Share your current abrasive, wheel type or workpiece information for application-oriented discussion.
07 / TECHNICAL FAQ
Frequently Asked Questions – Resin Bond Diamond
Practical questions about RVG diamond grit, friability, resin-bond grinding wheels, particle size and abrasive-grade selection.
1. What is resin bond diamond powder?
Resin bond diamond powder is synthetic diamond abrasive grit selected for manufacturing resin-bond grinding wheels and related tools. Different grades provide different crystal characteristics and fracture behaviors, which are evaluated together with the resin matrix and target workpiece.
2. What does RVG diamond mean?
RVG is an industry-recognized designation associated with resin- and vitrified-bond grinding diamond abrasives. These products are selected according to crystal morphology, toughness, friability, particle grading and bond compatibility. The exact characteristics depend on the manufacturer and product grade.
3. What is friability in synthetic diamond grit?
Friability describes the tendency of an abrasive crystal to fracture under an applied load. Highly friable grains generally fracture more readily than tougher grains under comparable conditions. The measured response depends on crystal characteristics, particle size and test method.
4. How does diamond microfracturing support self-sharpening?
Controlled microfracturing can expose fresh cutting edges as abrasive grains wear. This may help maintain free-cutting behavior, provided the grain and bond system are matched to the grinding load. Excessive grain fracture or premature grain release can also increase wheel consumption.
5. How do SND-R05, R10, R15 and R20 differ?
SND-R05 is positioned at the ultra-high-friability end, SND-R10 as a high-friability economy semi-blocky grade, SND-R15 as a medium-friability standard blocky grade, and SND-R20 as the lower-friability, higher-toughness selection position. Actual comparative toughness and performance should be confirmed with grade-specific tests.
6. Which workpieces are suitable for resin bond diamond abrasives?
Common application targets include cemented tungsten carbide, selected cermets, technical ceramics, glass and suitable hard-and-brittle non-ferrous materials. Specialized PCD-tool grinding may also be considered using an appropriate wheel design. The workpiece and grinding process should be evaluated before selecting a grade.
7. Can resin bond diamond be used for hardened steel?
For hardened steel and many other ferrous materials, CBN is normally the more appropriate superabrasive. Diamond may undergo accelerated thermochemical wear in certain ferrous grinding processes. Material composition and operating conditions should always be reviewed.
8. Are SND-R diamonds suitable for phenolic, polyimide and vitrified bonds?
The SND-R series is primarily positioned for resin-bond grinding wheels, including appropriate phenolic and polyimide systems. Vitrified-bond applications require separate validation of bond chemistry, firing conditions, diamond stability and tool performance.
9. What mesh sizes are available?
The earlier SinoDiam catalogue references a nominal range of 60/70–325/400 mesh for the broader series. Confirm the exact available size, grading standard and particle-size distribution for the selected product grade before ordering.
10. Does higher friability always produce a better surface finish?
No. Surface finish depends on diamond particle size, abrasive fracture behavior, bond formulation, wheel conditioning, grinding parameters and workpiece properties. A particular Ra value cannot be guaranteed by friability alone.
11. What information should I provide for grade selection or a quotation?
Please provide the workpiece material, required mesh size, resin-bond formulation, wheel type, grinding operation, desired surface finish, target removal rate, estimated quantity and destination country. If replacing an existing diamond grade, include its model and actual grinding results where available.
SINODIAM INTERNATIONAL · TECHNICAL SUPPORT
Looking for the Right Resin Bond Diamond Grade?
Developing resin-bond grinding wheels for carbide tools, ceramics, cermets, glass or other hard-and-brittle materials? SinoDiam offers four SND-R synthetic diamond grades for different abrasive fracture and grinding-tool requirements.
Contact our team with your target application, workpiece, bond system, requested grit size, estimated quantity and delivery destination. We can discuss grade selection and available product specifications.
Request Technical Information & Quotation →