For PP appliance casings, household articles and general injection parts. 40% carbon black on a PE carrier whose MFR is matched to standard PP windows — good dispersion in PP without paying for a full PP-carrier grade.
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 | 40% ±2 |
| Carrier system | PE (MFR-matched for PP) |
| Ash content | <12% |
| Melt flow rate (190 °C) | >10 g/10 min (21.6 kg) |
| Moisture | <0.50% |
| Recommended let-down | 2–3% |
| Density | — |
| FOB price range | USD 1.90–4.10 / 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 PP103 shows up in our export business, and why buyers pick it.
The classic use: black PP washing-machine and kitchen-appliance housings.
Baskets, storage, clips and hooks in glossy black PP.
Brackets and internal parts that just need to be properly black.
PE carrier at PP-matched flow — cheaper than PP30F where the system tolerates it.
The formulation logic behind the spec sheet — what the chart does not say.
The trick in this grade is the carrier MFR: a PE carrier that flows with the PP melt instead of lagging behind it. That is what gives clean color in PP without the price of a same-family PP carrier.
Ash below 12% is the balance point for injection: enough filler to keep cost down on volume parts, low enough that matte and semi-gloss surfaces stay even.
Where the system is demanding — GFPP, toughened PP, recycled PP — move up to PP30F, which removes the PE phase entirely.
This is the question buyers ask most often about PP103, and it deserves a straight answer rather than a reassurance.
PP and PE are not fully miscible — a PE phase sitting in a PP matrix can seed impact loss and colour drift if it is badly matched. So "PE carrier, PP part" sounds wrong until you look at what the carrier is doing. At a 40% carbon loading, the carrier is a small fraction of what enters the melt: at 2% let-down, the PE phase is a fraction of a percent of the finished part. It is present to carry carbon black, not to change the polymer system.
What makes it work is the melt-flow match. The carrier's MFR is set so it flows with the PP melt rather than lagging behind it — a carrier that reaches the flow front late leaves colour unevenly distributed, which is the actual defect people attribute to "wrong carrier". Match the flow and the phase question stops being visible in the part.
Where it does matter is when the base system is already sensitive: glass-filled PP, mineral-filled or toughened grades, recycled PP with an unknown history. In those systems even a small foreign phase can matter, and that is precisely the case PP30F exists for — same-family carrier, no PE interface to manage at all. PP103 is the volume answer; PP30F is the answer when the formulation leaves no room.
None of these are reasons to avoid the grade. They are reasons to plan the trial properly.
PP103 carries filler under 12%, which is the balance point for injection: enough to hold cost down on volume parts, low enough that matte and semi-gloss surfaces stay even. Push the filler higher and you buy cost at the expense of surface consistency on visible faces. If your part is a visible housing, say so at enquiry — the ash figure is a surface decision as much as a cost decision.
A deep black and a glossy black are not the same request, and a single grade does not optimise both. Pure jetness wants more real carbon in the wall; a controlled satin finish wants the filler and the dispersion balanced against it. Tell us which one the part is judged on — the same grade can be run to either, but the let-down and the surface expectation have to agree from the start.
Where regrind goes back into a PP part, the black loading is diluted by whatever fraction of clean regrind you add. On a 40% grade at 2% let-down, a 25% regrind stream does not halve the black, but it does move it — and it moves unevenly if the regrind itself comes from parts made at different times. The two ways out are to dose against the regrind ratio, or to set the grade a little richer so the target holds across the real mix. Tell us the regrind ratio at enquiry and we can specify for it rather than for virgin material only.
PP103 for standard PP homopolymer and copolymer injection, where cost per ton leads. PP30F for glass-filled, toughened or recycled PP systems where a PE carrier phase can seed impact loss or color drift.
For high-gloss Class-A surfaces ask for the glossy variant confirmation — standard PP103 runs semi-gloss. Samples settle it in one molding trial.
2–3% in natural PP. Deep black with good coverage at 2%; 3% for full jetness on thicker walls.
Use the form below or email Zoe Lin with your polymer, process and target. The full PP103 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 PP103 spec sheet, a let-down recommendation and a firm factory quote.
PP103 is the PP injection grade with MFR matched for PP processing. This is where the carrier and the carbon are compounded together.
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.