HDY Monocrystalline Diamond Micron Powder
HDY Series / Grain size W50 - W1 / Monocrystalline
HDY Monocrystalline Diamond Micron Powder
HDY Monocrystalline Diamond Micron Powder is a monocrystalline grade from the HDY series, produced factory-direct at our own base in Zhengzhou, Henan - the Diamond Capital of China. Standard grain size range: W50 - W1. Each batch is checked for particle size distribution before packing, and can be supplied in trial quantities for process validation.
Advantage
- Regular and uniform crystal form
- High purity with a consistent polishing effect
- Concentrated particle size distribution — a narrow, predictable cut
- Good dispersion, not easy to agglomerate
- High strength and wear resistance for a long, stable service life
Send your workpiece material, target surface finish and order quantity — we confirm the matching grade and sample route within 24 hours.
Product Overview
HDY is a monocrystalline diamond micron powder for precision lapping, grinding and polishing of hard and brittle materials. It is produced from industry-standard diamond raw material selected for purity and consistent crystal quality, giving sharp cutting edges, a controlled particle size distribution and stable batch performance.
Every batch is checked so that purity, particle size distribution and magnetic content meet the specification agreed with the customer.
It is suitable for optical glass, sapphire, SiC, ceramics, carbide and other precision components where both removal rate and surface finish must be controlled.
Standard Grain Size Chart
HNHONGXIANG synthetic diamond micron powder is graded to the Chinese national standard, with the corresponding international size range and mesh number shown alongside each grade. The 32 grades below run in one continuous ladder from W0.25 (0.11 – 0.20 µm) to 200/230 (65 – 73 µm).
| GradeChinese standard | Size range (µm)International standard | Mesh | D50 (µm)Mean particle size |
|---|---|---|---|
| Sub-micronW0.25 – W1.5Mirror finish and super-finishing | |||
| W0.25 | 0-0.25 | 60,000 | 0.11 – 0.20 |
| W0.5 | 0-0.5 | 30,000 | 0.20 – 0.30 |
| W1 | 0-1 | 15,000 | 0.6 – 0.8 |
| W1.5- | 0-2 | 13,000 | 1 |
| W1.5 | 1-2 | 12,000 | 1.1 – 1.3 |
| Fine micronW2.5 – W6Fine lapping and precision polishing | |||
| W2.5 | 1-3 | 10,000 | 1.6 – 1.8 |
| W3 | 2-3 | 7,000 | 1.9 – 2.1 |
| W3.5 | 2-4 | 6,500 | 2.2 – 2.6 |
| W3.5 | 2-4 | 6,000 | 2.6 – 3.0 |
| W4 | 2-5 | 5,000 | 3.1 – 3.4 |
| W5 | 3-6 | 4,000 | 3.5 – 4.2 |
| W6 | 4-6 | 3,500 | 4.4 – 5.0 |
| Precision micronW7 – W12Precision polishing of glass, ceramic and carbide | |||
| W7 | 4-8 | 3,000 | 5.0 – 6.0 |
| W10 | 4-9 | 2,500 | 6.1 – 6.5 |
| W10 | 5-10 | 2,000 | 6.5 – 7.3 |
| W12 | 6-12 | 1,800 | 7.3 – 8.3 |
| W12 | 8-12 | 1,600 | 8.3 – 9.0 |
| Medium micronW14 – W20+Lapping and controlled surface correction | |||
| W14 | 7-14 | 1,500 | 9.1 – 10.5 |
| W14 | 8-16 | 1,300 | 10.0 – 12.0 |
| W20- | 10-20 | 1,200 | 12.5 – 15.0 |
| W20 | 12-22 | 1,000 | 15.0 – 17.0 |
| W20+ | 15-25 | 800 | 18.0 – 20.0 |
| Coarse micronW28 – W40+Rough lapping and fast stock removal | |||
| W28 | 20-30 | 700 | 20 – 23 |
| W28+ | 22-36 | 600 | 23 – 26 |
| W40- | 20-40 | 500 | 26 – 29 |
| W40 | 30-40 | 450 | 29 – 32 |
| W40+ | 35-45 | 400 | 32 – 36 |
| Grit / mesh gradesW50 – 200/230Stock removal and tool-room lapping | |||
| W50 | 36-54 | – | 37 – 43 |
| 325/400 | 320 | – | 43 – 48 |
| 270/325 | – | 280 | 48 – 55 |
| 230/270 | – | 240 | 56 – 64 |
| 200/230 | – | 200 | 65 – 73 |
Where a designation appears twice it exists in more than one standard variant — tell us the D50 and range you need and we grade to that specification. Tighter PSD windows, custom cuts and private-label packing are available on request. Non-standard grades can be developed against your sample.
HDY Crystal Form By Grade
Optical microscope images of HDY monocrystalline diamond micron powder at each production grade. All HDY is produced from selected coarse diamond by crushing, shaping, classification, acid washing and drying, so every grade keeps a blocky crystal with sharp, well-defined edges — the shape that keeps a cutting edge alive instead of rubbing a surface flat.
Magnification is 40x for the fine grades and 10x for W20 and coarser. The images are representative of the crystal shape at each grade and are not a dimensional specification — use the grain size chart above for the controlled PSD, D50 and top cut.
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 HDY Sits In The Micron Powder Range
HNHONGXIANG diamond micron powder covers monocrystalline, polycrystalline and nano grades. HDY — the yellow monocrystalline grade — sits in the middle of that range as the general-purpose premium polishing grade.
| Grade | Type | Production method | Size range | Key characteristics | Typical applications |
|---|---|---|---|---|---|
| HDG | Monocrystalline | Free settling | 0–1 to 40–60 µm | Economic grade; regular crystal form; uniform particle size distribution | Polishing of gemstone, ceramic and stone; resin-bond diamond tools |
| HDYThis grade | Monocrystalline | Free settling | 0–1 to 40–60 µm | Selected premium raw material; regular, blocky crystals of even volume; concentrated PSD; high purity | Polishing of gemstone, ceramic, carbide, SiC, semiconductor and optical glass; resin- and electroplated-bond diamond tools |
| HDYM | Monocrystalline | Free settling | 0–0.5 µm | Regular crystal form; uniform PSD; extremely fine particles | Ultra-precision polishing of gemstone and metals |
| HDYX | Monocrystalline | Free settling | 2–4 to 6–12 µm | High strength; regular crystal form; high purity | Diamond wire saw — dedicated to silicon wafer slicing |
| HDYP | Polycrystalline | Acid treatment | 2–40 to 60 µm | Special process; rough crystal surface and large specific surface area; self-sharpening, high wear resistance; good finish | Substrates of sapphire, engineering ceramics, window materials and optical glass |
| HDP | Polycrystalline | Detonation synthesis | 1 µm to 10 µm | Explosive synthesis; rough crystal surface; more crystal edges and cutting faces; self-sharpening and wear resistant; good finish | Substrates of sapphire, engineering ceramics, window materials and optical glass |
| HDN | Nano powder | Detonation synthesis | 10–30 / 50–100 / 250–500 nm | High purity with iron content controlled at ppm level; stable dispersion and suspension; does not agglomerate or settle easily; ultra-precision polishing | Lubricating oil and coolant additives, material reinforcement, composites, electronics and precision manufacturing |
What To Include
Send the current product, particle size target and process problem. We will confirm the matching grade, sample route and packing option.