Tires
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N550 Carbon Black Soft grade Origin: Iran
N550 Carbon Black
N550 carbon black is a low-surface-area carcass grade. It gives rubber compounds excellent dimensional stability, easy processing and good extrusion performance.
- HS Code
- 2803.00
- Minimum order
- 1 pallet
- Delivery terms
- EXW · FOB · CFR · CIF · DDP
N550 carbon black is the most widely used member of the soft grade family. With an iodine adsorption of 43 g/kg it has a low surface area, yet it carries a high oil absorption value of 121 ml/100 g. This pairing makes it the classic choice for extrusion applications.
Why extrusion favors it
The combination of high structure and low surface area means that the compound swells little as it leaves the die, the surface is smooth and dimensional tolerances are held, all with low heat build-up. Brake diaphragms, seals and profiles need exactly this behavior.
Use in plastics
N550 is also widely used in black masterbatch and plastic pipe production; it delivers adequate performance for coloring and UV protection at an economical cost.
Applications
Profiles and extruded parts, rubber hoses and belts, brake diaphragms, black masterbatch, pipes and plastic products.
Technical Specifications
| # | Property | Value | Unit |
|---|---|---|---|
| 01 | Iodine adsorption number ASTM D1510 | 43 ± 5 | g/kg |
| 02 | Oil absorption number (OAN) ASTM D2414 | 121 ± 5 | ml/100 g |
| 03 | Compressed oil absorption number (COAN) ASTM D3493 | 85 ± 5 | ml/100 g |
| 04 | Pour density ASTM D1513 | 360 ± 20 | kg/m³ |
| 05 | Heating loss (max) ASTM D1509 | 1 | % |
| 06 | Toluene discoloration (min) ASTM D1618 | 75 | % |
| 07 | pH ASTM D1512 | 7.5 – 9 | |
| 08 | Fines content — Q-Bag (max) ASTM D1508 | 7 | % |
| 09 | Fines content — bag (max) ASTM D1508 | 10 | % |
| 10 | Individual pellet hardness — single max (20 pellets) ASTM D5230 | 50 | cN |
| 11 | Individual pellet hardness — average (20 pellets) ASTM D5230 | 10 – 40 | cN |
| 12 | Sieve residue — No. 35 US Std (max) ASTM D1514 | 10 | ppm |
| 13 | Sieve residue — No. 325 US Std (max) ASTM D1514 | 1,000 | ppm |
| 14 | Ash content (max) ASTM D1506 | 0.75 | % |
| 15 | Sulfur content (max) ASTM D1619 | 2 | % |
| 16 | Nitrogen surface area (NSA) ASTM D6556 | 40 ± 5 | m²/g |
| 17 | External surface area (STSA) ASTM D6556 | 39 ± 5 | m²/g |
| 18 | Particle size | 40 – 48 | nm |
Values are manufacturer specifications; ± indicates the production tolerance. Every shipment is sent with a certificate of analysis (CoA) for that batch from an ISO/IEC 17025 accredited laboratory.
Packaging and Loading
| Packaging Type | Net Weight | Per Pallet | Container / Truck |
|---|---|---|---|
| Jumbo bag (PP-PE, double valve) | 1,000 kg | 1,000 kg | 20' FCL 10 pallets / 10,000 kg · 40' FCL 20 pallets / 20,000 kg · Truck 22 pallets / 22,000 kg |
| Two-ply kraft paper-PE bag | 21 kg | 1,155 kg | 20' FCL 9,240 kg · 40' FCL 18,480 kg · Truck 20,790 kg |
Certificates
Technical Data Sheet (TDS)Available on request
Safety Data Sheet (SDS)Available on request
- ISO 9001
- ISO 14001
- ISO 45001
- ISO/IEC 17025
Key Features
- Low-surface-area carcass grade — Low heat build-up, high processability.
- Excellent dimensional stability — Extruded profile and seal dimensions stay constant.
- Easy processing and good extrusion — A smooth surface even at high line speeds.
- Balanced dynamic properties — Long service life in continuously running parts.
Industries Served
Industrial Rubber
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Plastics & Masterbatch
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Pipes & Profiles
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Agriculture & Packaging
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Similar Grades
Trial program
How does it work?
1-pallet trial offer
Test the product and return it if you are not satisfied. No obligation.
Frequently Asked Questions About This Product
Why is N550 the classic choice for extrusion?
Because it combines a low surface area (40 m²/g) with high structure (OAN 121 ml/100 g): the compound swells little as it leaves the die, the surface is smooth, dimensional tolerances are held, and all this comes with low heat build-up.
Can N550 be used in plastics applications?
Yes. It is widely used in black masterbatch and plastic pipe production and delivers adequate performance for coloring and UV protection at an economical cost.
What packaging is N550 available in?
We offer two options: a 1,000 kg double-valve PP-PE jumbo bag and a 21 kg two-ply kraft paper-PE bag. A pallet of bags holds 1,155 kg of product; a 20' container takes 9,240 kg and a truck 20,790 kg. With jumbo bags, these figures are 10,000 kg and 22,000 kg respectively.
Does N550 come with a certificate of analysis and a safety data sheet?
Yes. Every shipment is sent with a certificate of analysis (CoA) for that batch, issued by an ISO/IEC 17025 accredited laboratory. We send the safety data sheet (SDS) on request; if you would like to see a sample report before ordering, you can ask for one through the quote form.