© 2026 Anhui Liwei Chemical Co., Limited,
All Right Reserved
|
HS Code |
120787 |
| Product Name | Carbon Black N339 |
| Type | Furnace Black |
| Astm Designation | N339 |
| Color Index | Black |
As an accredited Carbon Black N339 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Carbon Black N339 is typically packaged in 25 kg multi-ply paper bags or flexible bulk bags (FIBCs) for industrial use. |
| Container Loading (20′ FCL) | Container Loading (20′ FCL) for Carbon Black N339: Typically loads 10-12 metric tons, packed in 25 kg bags or jumbo bags. |
| Shipping | Carbon Black N339 is typically shipped in multi-layer paper bags, FIBCs (bulk bags), or bulk tanker trucks, depending on quantity. Bags are securely sealed and stacked on pallets. The material should be kept dry and away from ignition sources during transport. Shipping complies with standard regulations for non-hazardous industrial chemicals. |
| Storage | Carbon Black N339 should be stored in a cool, dry, and well-ventilated area, away from sources of ignition and incompatible substances such as strong oxidizers. Keep the container tightly closed to prevent dust formation. Store in original packaging or appropriate containers to avoid contamination. Avoid exposure to moisture and direct sunlight, and handle with care to prevent dispersal of dust into the air. |
| Shelf Life | The shelf life of Carbon Black N339 is typically around 2 years when stored in dry, cool, and well-ventilated conditions. |
Competitive Carbon Black N339 prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please call us at +8615365186327 or mail to sales3@liwei-chem.com.
We will respond to you as soon as possible.
Tel: +8615365186327
Email: sales3@liwei-chem.com
Flexible payment, competitive price, premium service - Inquire now!
Production lines have a way of revealing the real workhorses in chemical manufacturing. In the world of carbon blacks, N339 tells its own story through performance, reliability, and adaptability. We understand this because we have spent years refining every batch, overseeing the quality ourselves, and watching how our product ends up strengthening the backbone of industry, from automotive tires to rubber belts.
N339 belongs to the family of high abrasion furnace (HAF) grades. Its particle structure isn’t just a matter of lab tables—out in the mixing room, the way N339 disperses and binds in rubber matters deeply. We make N339 by channel black furnace methods, keeping temperatures tight, and carefully monitoring feedstock streams. This isn’t theory—it’s a daily discipline. You can feel the difference in the finished product’s touch and see it in long test runs for tear resistance.
N339 comes out as a high-structural, medium-fine pellet with a nitrogen surface area sitting in the sweet spot for reinforcing car and truck tires. We keep iodine adsorption around 82 g/kg, targeting a level that our partners in the rubber industry have come to expect for balancing fill, viscosity, and wear characteristics.
Our process yields particles in the 25-28 nm range (DBP absorption at 114 cc/100g). This sizing shapes performance, especially for the tread you count on holding up for kilometers under high load and heat. In sidewall and casing applications, the formulation’s resilience reflects our steady feedstock control and years of checking batch test cards and tensile strength logs.
N339 handles mixing stress without clumping, so it runs clean on open mill or internal mixer alike. Compounders use it for tread stock, conveyor belts, hoses, and molded rubber parts where resistance to mechanical stress and repeated flexing adds years to service intervals.
The everyday reality is that N339 bridges the demands of tire tread—where rolling resistance, grip, and abrasion matter most—to the less-forgiving environments of mining conveyor belts or high-load mounts in heavy industry. It supports a balance of cut growth resistance, dynamism, and just enough stiffness. We see this in test sled runs and the long-term feedback from people who put finished parts through real-world punishment.
Not all carbon blacks meet the same challenges. N330, for example, lies nearby on the specification chart, but in practice, there are structural differences visible to anyone mixing compounds day after day. N339 offers higher structure and reinforcement than N330, which translates to greater tensile strength in the finished product, slightly higher modulus, and improved treadwear—qualities that tip the balance when durability is a factory promise.
Compared to N220, which has even finer particle structure, N339 reduces heat build-up while matching most grip and tear properties. It finds a place in the middle, where too much reinforcement would bring unnecessary stiffness or raise costs, and too little would invite premature failure or poor return on investment for the end customer.
N550, a commonly chosen semi-reinforcing grade, falls short on the abrasion and tear resistance front if you push parts under tough conditions. Engineering teams looking for that extra margin in high-wear or load-bearing parts often settle on N339 because it brings enough structure to improve performance without derailing process efficiency or finish quality.
The best batches of N339 come from careful furnace temperature management, air-to-feedstock tuning, and close monitoring of the pelletizing stage. Our teams have worked the routine of inline sampling, sieve analysis, and hands-on texture checks. Every time we spot deviation in DBP or color strength, we trace back through batch records and re-run controls—not simply for compliance, but from a learned sense that tiny shifts at the furnace can cost a customer months down the road.
Our techniques for reducing grit content, adjusting pellet hardness, and limiting moisture carryover make N339 from our lines easier to handle. We listened when compounders commented on dust or flow in the transfer system, so we gradually refined the pelletizing process. It’s a point of pride to see our material perform as intended across extrusion, molding, or calendering.
Carbon black has drawn more regulatory scrutiny in recent years, especially around fine particulate emissions during manufacture. As a producer, we’ve installed afterburner systems, dust collectors, and real-time emissions monitors. We meet current environmental controls not out of obligation, but because it makes long-term sense—better controls reduce potential regulatory risk, keep insurance costs lower, and protect team members handling every stage of the process.
Our commitment starts at sourcing, where we trace every hydrocarbon feedstock and test incoming lots for unwanted impurities. Internal protocols match REACH requirements and more. Finished goods ship only after QC verifies specified surface area, granule hardness, and low PAH content. We keep detailed batch provenance, knowing that transparency and repeatability beat any marketing claim over time.
Rubber goods using N339 regularly outperform those based on softer or lower-structure carbon blacks. Tire molders provide us with feedback after test tracks and controlled fleet tests, highlighting improvements in tread life of up to 10 percent over previous generations. Conveyor belt manufacturers remark on slow rates of crack propagation and higher intervals between maintenance, directly relating these gains to the structural presence and dispersion quality of N339.
Compounded parts built around N339 sustain fewer blowouts in extreme conditions. For hoses exposed to cyclic flexing, N339 brings balance, holding elasticity while boosting tear resistance. Our hands-on technical support helps processors tailor cure times and recipes specifically for this product—it’s more than a material, it’s a foundation for finished goods with real-life reliability in mind.
On the factory floor, flow and dispersion mean everything during mixing and extrusion. We keep pellet size and moisture content consistent in every batch so mixing times stay predictable. Mistakes here boost costs through waste or uneven quality in the extrudate, so our teams check each lot for easy handling, minimal dust, and consistent mass-to-bulk flow.
Our process engineers exchange regular notes with compounders at customer plants, adjusting pelletizing speeds for better compatibility with the latest mixing lines or continuous extrusion systems. We also log data on every shipment’s flow properties to resolve any issues with sticking or caking in transit.
Unpredictable clumping slows down production. Tight control on particle surface area and structure means fewer problems at the mill—operators report cleaner band formation and shorter mixing cycles with N339. This helps boost batch productivity and ultimately saves energy, another factor we consider in process improvements.
Carbon black manufacturing evolves along with the needs of the downstream industries. In our laboratory, we keep samples of every major N-grade and compare them side by side in standardized rubber mixes. Over the years, we have worked with independent institutes and OEM labs to confirm that tensile and abrasion metrics for N339 hold up in repeat trials.
Our technical team often collaborates with product development groups in the automotive, construction, and mining sectors—testing how N339 fits with new elastomer blends or shifts in regulatory standards for VOC content. Customers tell us that the resilience N339 offers in high-performance tire treads translates robustly to industrial belts or heavy-duty molded goods. This ongoing conversation feeds back into our production, shaping how we fine-tune yield, particle structure, and flow.
We plan production capacity based on actual order history and direct customer forecasts, rather than speculative highs and lows that can destabilize the supply chain. Years of operation have shown that keeping a tight hold on raw feedstock sourcing, process scheduling, and emergency reserves pays back in service continuity—especially during raw material shortages or plant upgrades.
We also work closely with transportation specialists to ensure that N339 batches reach customer plants in peak condition, covered from rain and packed to reduce dust or caking. Our packing lines use anti-static liners and double-bagged bulk containers, a step learned from long-haul shipment issues early in our production history.
For customers facing surges in demand or changing export requirements, we offer batch technical support to help speed up qualification and switchovers. Years of close dialogue with users on three continents means we understand the details that impact your day-to-day plant operation. We don’t just ship material; we aim to help operations hit tighter production windows and maintain line stability.
Manufacturing technology keeps advancing, and so do the expectations for filler performance. We draw insight not only from test results but from plant visits where we watch how operators handle our N339 in mixing rooms, extrusion halls, or tire curing stations. Open feedback—from formulation updates to unexpected issues—becomes part of the way we improve every subsequent batch.
One lesson repeated across the years is that subtle differences in manufacturing conditions quickly show up in final product properties. By monitoring shifts in end use—whether for tire treads where rolling resistance matters, or conveyor belts demanding high tear strength—we tune our manufacturing practices to stay ahead of customer needs. Our teams share this knowledge across shifts and departments, so consistency grows out of practical experience rather than written protocols alone.
Factories don’t stop for theoretical advantages; they run or halt based on tangible performance. Batch after batch, N339 delivers process reliability, abrasion strength, and the resistance to mechanical stress demanded by modern industry. Users post gains in output, fewer line stoppages, and longer service life for wear parts.
If your operation values steady supply, low dust, easy handling, and real-world strength, N339 deserves consideration. The data stands up—in-house testing, customer feedback, and independent lab results converge on the same point: in tire production, industrial hoses, high-stress belts, and other molded goods, N339 brings a hardness and flexibility that’s rooted in how it’s made, not just how it’s marketed.
Our door stays open for technical consultation, sample requests, and feedback on current production. As manufacturers ourselves, we understand what matters in daily operations—and we’re committed to delivering the precise N339 blend that keeps your lines running at full pace.
Carbon black N339 represents decades of process knowledge, investment in QC, and a focus on real-world application results. Its place in the market rests not on broad claims or generic statistics but on continuous improvement, mutual trust with customers, and dedication to supplying a consistent, high-performance reinforcement.
For us, N339 is more than a number or a spec sheet entry—it’s a material forged by lived experience in chemical manufacturing. Our own journey refining this product reflects the same commitment our customers share: to build goods that last, perform, and keep the wheels of industry turning.
