Premium diamond micron powders for PCD composites to ISO 13320:2020 (equiv. GOST 9206-80 / GB/T 35477-2017). High thermal stability, narrow distribution, low impurities. Full range (AAA/AA/A/B/C + PCDI/PCDⅡ) including economy grade C; custom fractions. MOQ 1 kg. Basic QC of every batch; official protocol from a CN state laboratory — on request.
Pricing is on request, delivery basis FOB China, exclusive of VAT. Micron powder cost depends on grade, fraction and quantity — please confirm by email.
Supplied with full documentation package: standard, particle size COA, safety data sheet, and specifications. EAC declaration is the importer responsibility — we provide full technical support.
Products are characterized per ISO 13320:2020 (laser diffraction, D50/D90) and conform to GOST 9206-80 and GB/T 35477-2017. Actual fraction values for each batch are confirmed by a particle-size report (COA).
EAC compliance and declaration are the responsibility of the importer. DIAMTECH provides full technical documentation support: COA (particle size distribution, impurity analysis), MSDS, and product specifications to facilitate your EAC process.
Every batch ships with the partner factory report, re-verified by DIAMTECH. Sample on the Certificates page.
Document copies are provided before shipment.
From coarse synthetic-diamond grain to micron powder of the required fraction.
01
Large yellow grains of synthetic diamond (macrogrit / grinding powder) are the starting material.
02
The coarse grains are crushed — the result is black diamond micron powder.
The powder passes through several size-separation stages — each stage yields a finer fraction.
The finished micron powder is supplied by grain-size fraction (W5, W10, W20 and others).
Five grades by purity, grain shape and distribution stability (AAA/AA/A/B/C). High thermal stability, narrow distribution, low impurities. Full range (AAA/AA/A/B/C + PCDI/PCDⅡ) including economy grade C; custom fractions.
Laboratories and precision R&D — on request (custom)
Precision lapping and polishing, high-grade PCD
Grinding and polishing, standard PCD tools
Rough grinding, stone, budget tools
General grinding and polishing, budget applications
Monocrystalline for high-precision tools and aviation, polycrystalline for mining and oil & gas.
| Parameter | Monocrystal (high-grade PCD) | Polycrystal (mining/oil & gas) |
|---|---|---|
| Grain size range | PCD sintering range, custom (premium tools/aviation) | PCD sintering range, custom (mining/oil & gas PDC) |
| D50 stability (batch to batch) | ≤ ±3.8% (RU requirement ≤ ±8%) | ≤ ±4% (RU requirement ≤ ±8%) |
| D5 (5th percentile) | Per fraction spec, value in the batch QC report | Per fraction spec, value in the batch QC report |
| D95 (95th percentile) | Narrow distribution, value in the batch QC report | Narrow distribution, value in the batch QC report |
| Grain shape (sphericity) | Spheroidal, high flowability, sphericity customizable | Spheroidal, self-sharpening, impact toughness |
| Metal impurities (Fe+Ni+Co) | < 65 ppm (avg 63 ppm) | < 70 ppm |
| Magnetic impurities | < 0.1% | < 0.12% |
| Key advantage | PCD blank yield +15%, cost 28% lower | Drilling tool life +30%, cost 30% lower |
| Main application | PCD cutting tools, aviation machining | Mining drill tools, oil & gas PDC |
Both lines meet ISO 13320:2020, GOST 9206-80 and GB/T 35477-2017. Order volume agreed individually. Basic QC of every batch; official protocol from a CN state laboratory — on request.
Price depends on grade, particle fraction, quantity and delivery terms — confirmed by email inquiry.
| Grade | Trial batch | Batch order |
|---|---|---|
| SCMD-AAA | on request (made to spec) | |
| SCMD-AA | on request | on request |
| SCMD-A | on request | on request |
| SCMD-B | on request | on request |
| SCMD-C | on request | on request |
| Grade | Trial batch | Batch order |
|---|---|---|
| PCDI — hard-grade fraction, PDC / oil drilling | on request | on request |
| PCDⅡ — general-purpose PCD / wire-drawing dies | on request | on request |
All SCMD grades and PCD powders are quoted per inquiry: price varies with grade, particle fraction, quantity and delivery terms. Send us your requirement by email and we will quote. Grade AAA is made to spec. Micron powder trial batch from 1 kg, suspensions from 5 L.
| Grit (nominal) | Range, µm | AAA | AA | A | B | C |
|---|---|---|---|---|---|---|
| 0,25/0,5 | 0,25–0,5 | ● | ● | ● | ● | — |
| 0,5/1 | 0,5–1 | ● | ● | ● | ● | — |
| 1/2 | 1–2 | ● | ● | ● | ● | ● |
| 2/4 | 2–4 | ● | ● | ● | ● | ● |
| 3/6 | 3–6 | ● | ● | ● | ● | ● |
| 4/8 | 4–8 | ● | ● | ● | ● | ● |
| 6/12 | 6–12 | ● | ● | ● | ● | ● |
| 7/14 | 7–14 | ● | ● | ● | ● | ● |
| 10/20 | 10–20 | ● | ● | ● | ● | ● |
● — standard sizes for PCD sintering. Specific fractions custom-made. Full range of grades (AAA/AA/A/B/C), including economy grade C. GOST 9206-80 / FEPA compliance on request.
GOST 9206-80 is a widely used grading standard for diamond micron powder. The table below maps common grades to micron sizes. Specific fractions custom-made.
| GOST grade | Size range (μm) |
|---|---|
| ACM 1/2 | 1–2 |
| ACM 2/4 | 2–4 |
| ACM 3/6 | 3–6 |
| ACM 4/8 | 4–8 |
| ACM 5/10 | 5–10 |
| ACM 6/12 | 6–12 |
| ACM 7/14 | 7–14 |
| ACM 10/20 | 10–20 |
GOST 9206-80 is a reference equivalence. Quality control per ISO 13320:2020. Full mapping on request.
Laser granulometry of every batch per ISO 13320:2020. Main fraction at least 80–82%.
ICP analysis. Impurities not over 0.4–0.5% (better than GB/T 35477-2017 requirements).
SEM control of shape and surface. Rod-like and coarse particles rejected.
D50 / D90 / impurities / grain composition — basic QC of every batch at source; official protocol from a CN state laboratory — on request.
Diamond micron powder is an abrasive material made of synthetic diamonds ranging from 0.1 to 60 μm, produced by sedimentation. Used for diamond tools, pastes and suspensions, polishing hard alloys, ceramics, glass and semiconductors.
Coarse fractions (40/28, 28/20) — rough processing and cutting; medium (20/14, 14/10) — grinding; fine (7/5, 5/3, 3/2, 1/0) — lapping and polishing. For PCD composites, use narrow fractions with D50 control.
ACM — normal abrasive ability, ACH — increased. ACH is stronger and lasts longer at the same grain size, ACM is more economical for most operations.
Specify grit size, grade and volume — we reply within 1 business day.
DIAMTECH is a diamond trading and sourcing company, not a factory. We work directly with the Henan cluster, selecting and comparing products across plants and matching the best partner plant for each batch.
SCMD range: AAA (made to spec), AA, A, B, C. Fractions W40–W0.1. Standard W5/W10/W20 are kept in stock and common fractions ship from stock within 48 hours.
Standard micron powder from 1 kg, suspensions from 5 L. The minimum for a custom fraction is 10 kg. Send us your requirement by email and we will confirm the exact MOQ for your case.
Prices are not published on this site. Cost depends on grade, particle fraction, quantity and delivery terms, and is confirmed by inquiry. Describe your requirement by email and we will send a quotation.
Fractions ≤50 μm fall under Chinese control code 2C902.a. Under China Announcement No. 55, enforcement is suspended until 2026-11-10, so no licence is required within that window. Conditions change after the window, so check the status for your shipment date.
A COA is issued per batch on request. Test protocols from the Henan Provincial Quality Supervision & Inspection Center for Synthetic Diamond Micron Powder (Zhecheng) — China's only specialized state laboratory for micron powder — or from the National Center are available on request.
Samples are available, but the sample fee and freight are paid by the buyer (collect); both are credited to the first order. DIAMTECH does not offer free samples.
TT: 30% deposit, balance before shipment. An invoice is provided.