The universal grade: 50% carbon black carried in a polymer wax that runs on PE, PP, PC, PS and ABS. MFR 75.5 g/10 min (21.6 kg) for thin-wall and complex-cavity injection — and the only universal grade we know with measured mechanical data, not estimated.
Typical values from in-house QC. We confirm the contractual spec against your order, with a batch CoA on every shipment.
| Property | Typical value |
|---|---|
| Carbon black content | 50% |
| Carrier system | Polymer wax |
| Ash content | none (no mineral) |
| Melt flow rate (190 °C) | 75.5 g/10 min (21.6 kg) |
| Moisture | 0.27% |
| Recommended let-down | 1–3% |
| Density | 1.237 g/cm³ |
| FOB price range | USD 2.50–5.00 / kg (FOB) |
| Minimum order | 500 kg (samples free) |
| Delivery | 10–14 days after spec confirmation |
| Packaging | 25 kg KP or PE bags, 20 bags per pallet |
| Loading port | Shenzhen, China |
| HS code | 32064900 |
| Quality standards | ISO 9001 / 14001 / 45001 plant · batch CoA per lot |
Values are typical QC reference data, not contractual specifications — request the full TDS and we send it the same day.
Where HP Wax Grade shows up in our export business, and why buyers pick it.
One inventory across PE, PP, PC, PS and ABS — the wax carrier has no resin family to fight.
MFR 75.5 keeps color uniform in long, thin flow fronts where standard carriers lag.
The wax lubricates the CB–polymer interface, so color reaches the last-filled rib.
Validated on injection-molded ABS specimens at 2% let-down: impact 17.41 kJ/m², elongation 39.04%, tensile 44.88 MPa.
The formulation logic behind the spec sheet — what the chart does not say.
How wax can carry carbon black: the carrier melts at 60–90 °C — far below processing temperature — coats each carbon black particle during the shot, and lubricates the pigment–polymer interface. The compound stays ductile instead of embrittling, which is what the measured specimen data shows.
No mineral, no ash: the 1.237 g/cm³ density is the tell — there is nothing in the pellet but wax, carbon black and process aids.
Why we publish specimen data: universal grades are usually sold on claims. This one was molded in LG ABS121H at 2% let-down and tested — the numbers are on file and come with the quote.
A wax carrier does not behave like a resin carrier at the machine. Four things worth knowing before the first run.
At 0.27% moisture the pellet is shipped dry, but a wax carrier softens and can pick up ambient moisture differently from a PE carrier. Store sealed, and if your process dries material at all, keep the hopper temperature well below the wax softening range — the point of a wax carrier is that it melts early, and an over-warm hopper will make it sticky rather than dry. If you are running a grade where no drying is normal, you generally still do not need it here; the figure matters most where your line already dries because of other components in the blend.
Wax-carried pellets can feel marginally softer than resin-carried ones, and in a vacuum loader or a long flexible line that shows up as bridging rather than as a metering error. If your conveying system is marginal on a 40% PE grade, check it on this one before committing to a full run. Volumetric and gravimetric feeders both handle it; the risk sits in the conveying, not the dosing.
At 75.5 g/10 min the melt is highly fluid, which is exactly what thin-wall and long-flow parts need. The trap is that a fluid melt can be read as "too hot" and the barrel profile pulled down, which loses the flow you bought the grade for. Set the profile for the resin you are moulding — the wax follows the resin, it does not set the window.
Because the carrier lubricates the carbon-black/polymer interface, flow fronts carry pigment further into complex cavities than a standard carrier does. Where a part previously needed a hot tip or an extra gate to avoid a light patch at the end of fill, a wax-carrier grade sometimes removes that need — and sometimes simply moves the balance point. Run the trial on the real tool before you rewrite the gate layout.
Three ways to black a moulding, and when each one is the right purchase.
| Option | Carrier | Strength | Choose it when |
|---|---|---|---|
| HP Wax Grade | Polymer wax, 50% CB | One inventory across PE/PP/PC/PS/ABS; very high flow; measured specimen data | You run several resin families, or thin-wall flow rules out a standard carrier |
| Resin-carried grade (e.g. PP103 on PP, 6045 on PE) | Matched polymer | Single-phase melt, lowest cost per finished ton at single-resin volume | You mould one resin family at volume — the matched carrier usually wins on price |
| Carrier-free high load (e.g. SY-65 at 65%) | None | Highest carbon per kilo; no carrier diluting your compound | You are compounding or setting your own let-down and do not want carrier entering the formulation |
The trade is consistent: the more universal the carrier, the less it is optimised for any one resin. A multi-resin plant pays a small premium for a single SKU and a simpler inventory; a single-resin plant at volume is almost always better served by the matched-carrier grade. Both are correct answers to different questions — the mistake is buying the universal grade for a volume job, or buying five matched grades for a plant that runs five resins in small lots.
At recommended let-down, no — that is what the ABS specimen data demonstrates: impact 17.41 kJ/m², elongation 39.04%, tensile 44.88 MPa at 2% let-down. Data sheet comes with the quote.
PE, PP, PC, PS and ABS, yes. For engineering resins beyond that list (PA, PET, PBT), look at the carrier-specific grades or ask — we compound matched systems.
When you run several resin families and want one inventory, or when thin-wall flow rules out standard carriers. For single-resin volume, a matched-carrier grade usually wins on cost.
Use the form below or email Zoe Lin with your polymer, process and target. The full HP Wax Grade data sheet goes out the same day, and a free 2–5 kg line-trial sample follows — produced under the same compounding conditions as commercial batches.
Tell us your polymer, process and target carbon black in the part. We reply with the HP Wax Grade spec sheet, a let-down recommendation and a firm factory quote.
HP-WAX-50 is the wax-based carrier system. Carrier compatibility is what this compounding line is set up for.
Full factory tour — 2:50 on YouTube
Two minutes and fifty seconds inside the Huizhou plant: raw-material dosing, compounding, pelletising, packing and the QC laboratory.
Watch the full tour on YouTube →
Factory-direct. Annual capacity 60,000 t/yr. Certification details on the certifications page.