HDHR Crushed Diamond Grit (Type II Yellow)
HDHR Series / Grain size 80/100 - 325/400 mesh / Monocrystalline
HDHR Crushed Diamond Grit (Type II Yellow)
HDHR Crushed Diamond Grit (Type II Yellow) is a monocrystalline grade from the HDHR series, produced factory-direct at our own base in Zhengzhou, Henan - the Diamond Capital of China. Standard grain size range: 80/100 - 325/400 mesh. Each batch is checked for particle size distribution before packing, and can be supplied in trial quantities for process validation.
Advantage
- Yellow RVD-type grit with good friability and self-sharpening behaviour
- Low magnetic content and low non-diamond residue
- Crushed, screened, cleaned and dried from selected coarse diamond
- Tight mesh ranges from 80/100 to 325/400
- Resin-bond, vitrified-bond, electroplated and lapping-compound uses
- Ships in 3 working days
Send your workpiece material, target surface finish and order quantity — we confirm the matching grade and sample route within 24 hours.
Product Overview
HDHR is the Type II yellow crushed diamond grit: irregular, sharp-edged particles produced from selected coarse diamond by crushing, screening, cleaning and drying, then supplied in tight mesh ranges from 80/100 down to 325/400.
It is the RVD-type yellow material, which means good friability and self-sharpening behaviour, low magnetic content and fewer impurities than black grit. In resin and vitrified bonds that combination keeps the wheel cutting rather than glazing over.
Main uses are resin-bond diamond wheels for hard alloy, ceramic, glass and carbide grinding, vitrified bond wheels for higher-precision work, and lapping compounds, flexible abrasives, files and electroplated burrs.
Standard Grain Size Chart
Crushed diamond grit is produced from selected coarse diamond by crushing, screening, cleaning and drying. Particles are yellow, irregular and sharp-edged, supplied in tight mesh ranges.
| Grade (mesh)China standard | ISO codeEurope | Size range (µm) | Sieve no.Mesh no. |
|---|---|---|---|
| Coarse grit80/100 – 140/170Higher removal, coarser surface | |||
| 80/100 | D180 | 180 – 150 | 80# |
| 100/120 | D151 | 150 – 125 | 100# |
| 120/140 | D126 | 125 – 106 | 120# |
| 140/170 | D107 | 106 – 90 | 140# |
| Medium grit170/200 – 270/325General resin and vitrified bond wheels | |||
| 170/200 | D91 | 90 – 75 | 170# |
| 200/230 | D76 | 75 – 63 | 200# |
| 230/270 | D64 | 63 – 53 | 230# |
| 270/325 | D54 | 53 – 45 | 270# |
| Fine grit325/400 – 400/500Finishing wheels and lapping compounds | |||
| 325/400 | D46 | 45 – 38 | 325# |
Yellow crushed grit is supplied from 80/100 down to 325/400 mesh. Finer fractions are supplied as micron powder (HDY / HDH ladders) rather than as crushed grit. Impact toughness and magnetic content are checked lot by lot — ask for the values on the mesh range you are buying.
Recommended Applications
Factory Checks Behind This Grade
HNHONGXIANG has produced synthetic diamond powder since 1990 in Henan, China. The factory covers about 124,000 square meters and supplies micron powder, diamond grit, coated diamond and functional diamond materials for global abrasive and precision processing customers.
Batch particle-size inspection
Laser diffraction PSD checked before packing, for stable batch-to-batch performance.
Factory-direct processing
Grading, washing, drying and packing handled in our own plant.
Custom grades available
Grade selection and private-label packaging to your specification.
Export support
Samples, trial orders and bulk shipments with full batch documents.
Packing And Export Options
Standard packing includes sealed bottles, bags or drums according to particle size and order quantity. Inner packaging is moisture-resistant and clearly labeled with product model, grain size, batch number and net weight.
Multiple package options
Sample, kilogram and bulk orders.
Moisture-resistant packing
Sealed bottles, bags or drums.
Clear labeling
Model, grain size, batch no. and net weight.
Export ready
Cartons or drums for air, express or sea.
Bottle package
50 / 100 / 150 / 200 / 300 / 500 / 1000 / 2000 / 3000 / 5000 / 10000 ct
Bag package
100 ct – 10000 ct sealed foil bags, labelled per batch.
Shipping methods
Air, express or sea freight according to order quantity.
Where HDHR Sits In The Crushed Grit Range
Crushed diamond grit splits into two material families. Yellow grit is the RVD type, graded for consistent cutting and used worldwide. Black and green grit is the RVG type, cheaper per carat and normally chosen for cost-driven markets where tool life is traded for price.
| Grade | Colour | Crystal character | Production route | Typical use |
|---|---|---|---|---|
| HDYR | Yellow (Type I) | Irregular, sharp, rough-surfaced particles | Crushed from selected coarse diamond, screened, cleaned and dried | Resin and vitrified bond wheels, lapping compounds, electroplated tools |
| HDHRThis grade | Yellow (Type II) | Yellow RVD-type material at standard grading | Crushed, screened, cleaned and dried | Resin-bond wheels for medium-soft materials |
| HDGR | Black / green (Grade A) | Slimmer, more angular particles with a rougher surface | Crushed from selected coarse diamond | Low-cost resin and vitrified bond wheels |
| HDGNR | Black / green (Grade B) | Economy black grade, wider grading tolerance | Crushed and screened | Entry-level tools and consumables |
| HDGD | Raw black | Unclassified raw black grit | Screened only | Further processing and low-cost bond wheels |
What To Include
Send the current product, particle size target and process problem. We will confirm the matching grade, sample route and packing option.