| HS Code | 124924 |
| Product Name | Arkema Rilsan Fine Powders 5913 BLUE RDP 15-10 FB PA11 |
| Manufacturer | Arkema |
| Material | Polyamide 11 (PA11) |
| Color | Blue |
| Physical Form | Fine Powder |
| Particle Size | 50 µm typical D50 |
| Melting Point | 186 °C |
| Density | 1.04 g/cm³ |
| Bulk Density | 0.50 g/cm³ |
| Water Absorption 24h | 1.2% |
| Tensile Strength | 45 MPa |
| Elongation At Break | 350% |
| Hardness Shore D | 70 |
As an accredited Arkema Rilsan Fine Powders 5913 BLUE RDP 15-10 FB PA11 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Supplied in a 25 kg bag: blue fine PA11 powder, Arkema Rilsan 5913 BLUE RDP 15-10 FB, for industrial coating applications. |
| Container Loading (20′ FCL) | 20′ FCL container loaded with Arkema Rilsan Fine Powders 5913 BLUE RDP 15-10 FB PA11, securely packed, labeled, and documented for transport. |
| Shipping | Ship Arkema Rilsan Fine Powders 5913 BLUE RDP 15-10 FB PA11 as polyamide powder in sealed, lined bags or drums on pallets. Not regulated as dangerous goods for transport, though fine dust is combustible; avoid ignition sources, static, and moisture. Keep cool and dry; standard freight is acceptable. |
| Storage | Store Arkema Rilsan Fine Powders 5913 BLUE in a cool, dry, well-ventilated area away from heat, sparks, and direct sunlight. Keep the original container tightly sealed to prevent moisture absorption and contamination. Avoid generating dust; use appropriate ventilation. Maintain moderate temperatures and protect from physical damage. |
| Shelf Life | Shelf life: 2 years from manufacture if stored unopened in a cool, dry place away from direct sunlight. |
In continuous fluidized-bed coating lines for carbon steel wire goods, Arkema Rilsan Fine Powders 5913 BLUE RDP 15-10 FB PA11 is charged as a 100 wt% fusion-bonded topcoat with no curing agent added, because polyamide 11 forms a film by thermoplastic coalescence rather than thermoset crosslinking. The carbon steel substrate is degreased in an alkaline cleaner at 60–70 °C, rinsed, and blast-cleaned to ISO 8501-1 Sa 2½; baskets are then preheated in a forced-air convection oven at 260–320 °C and dipped into the fluidized bed for 3–12 s. If the powder has been exposed to relative humidity above 60 %, pre-drying at 70–80 °C for 2–4 h is required to prevent steam-pinhole formation along wire intersections. Theoretical powder loading for a fused film of 300 µm is 312 g/m² at a melt density of 1.04 g/cm³; fluidized-bed transfer efficiency typically lies between 85 % and 95 %, giving practical consumption of 328–367 g/m². Reclaimed powder from electrostatic spray recovery is limited to ≤25 wt% and must be sieved through 200 µm mesh to prevent fines-induced orange peel and film discontinuity. Corrosion testing for dishwasher racks and freezer shelves follows ISO 9227:2022 neutral salt spray for 1,000 h with scribe creep not exceeding 5 mm, abrasion resistance is measured under ASTM D4060-19 using CS-17 wheels at 1,000 g load, and impact durability is checked under ASTM D2794-93. Where repeated food contact is claimed, the base polyamide 11 resin is assessed under FDA 21 CFR 177.1500; the blue pigment package must independently comply with applicable colorant provisions and EU 10/2011 migration limits. Finished article categories include dishwasher baskets, freezer wire shelves, retail display wire grids, commercial laundry cart baskets, and refrigerator rack assemblies.
For potable water valve internals, hydrant components, and small pump casings, 5913 BLUE RDP 15-10 FB is applied over machined and blast-cleaned ductile iron, carbon steel, or dezincification-resistant brass. Surface preparation is controlled to ISO 8501-1 Sa 2½ with an anchor profile of 50–75 µm; an epoxy primer of 5–15 µm is applied before the polyamide 11 topcoat to control wet-adhesion loss and interfacial corrosion. The topcoat is sprayed electrostatically at 60–80 kV onto parts preheated to 220–260 °C and post-fused at 180–200 °C for 5–10 min. Dry film thickness is specified at 250–400 µm and measured under ISO 2178:2016; at 400 µm the theoretical loading is 416 g/m² at 1.04 g/cm³, and with electrostatic transfer efficiency of 60–80 % practical consumption lies between 520 g/m² and 693 g/m². Overspray recovery for potable water service is restricted to ≤20 wt% after screening through 200 µm, because reclaim contamination can create extractable hotspots in the fused film. Grade-specific current certification under NSF/ANSI 61 must be confirmed, and owner specifications may additionally reference AWWA C224 for nylon-11 coating systems on water and wastewater valves and fittings. Pinhole detection is performed at 3–5 kV DC, and adhesion after water contact is checked by ISO 2409:2020 cross-cut. Operational boundary: if no active certification exists for the finished article, accelerated hot-water contact at 60 °C for 30 days should be screened for blistering and organic extractables before volume release. Finished component categories include gate valve bodies, butterfly valve discs, check valve internals, hydrant bonnets, and small pump casings.
When heat-treated carbon steel fasteners are powder-coated before thread engagement tests, the preheat window is set below the tempering temperature to prevent relaxation of the draw-in hardness; for fasteners tempered at 250 °C, induction or infrared preheat is limited to 220–240 °C, whereas unhardened low-carbon fasteners can tolerate 280–340 °C. The powder is applied by fluidized-bed dip for screws of M8 and larger, or by electrostatic spray for high-volume spring clips and stampings, at a dry film thickness of 150–250 µm on accessible surfaces and no less than 80 µm in thread roots. Theoretical loading at 180 µm is 187 g/m²; small-part transfer efficiency can fall to 40–60 % because of Faraday-cage effects on recessed sockets and threaded regions, and if published data for the specific fastener geometry is unavailable, pilot-line trials must establish the powder-to-part mass ratio, with an initial working window of 2.0–4.0 wt% based on surface-area-to-mass calculations. Reclaimed overspray is blended at ≤20 wt% after rotary sieving at 150 µm. Corrosion testing follows ASTM B117-19 for 720–1,000 h depending on OEM drawing notes, with scribe creep held below 3 mm; impact resistance is tested under ASTM D2794-93 and adhesion is checked under ASTM D3359-23 to class 5B. Operational incompatibility: zinc phosphate conversion layers must be fully dried and free of residual stamping oil, otherwise oil volatilization during preheat produces pinhole strings along thread flanks and around socket corners. Finished part categories include engine compartment spring clips, battery tray brackets, brake line support clamps, cable retention brackets, and oil sump shield fasteners.
Offshore cable tray, pipe support, and instrument bracket applications expose the PA11 film to cyclic marine fog, UV radiation, and occasional splash-zone contact. The powder is specified at 400–600 µm dry film thickness over an intact zinc-rich primer; the theoretical topcoat loading is 416–624 g/m² at 1.04 g/cm³. Preheating is conducted at 260–300 °C, and parts are dipped in a fluidized bed for 6–15 s to allow zinc primer outgassing without forming pinholes. Reclaimed powder is excluded from the topcoat in this service, and first-pass transfer efficiency is required to be at least 70 %. Qualification is performed under ISO 20340:2009 or NORSOK M-501:2022 where the owner specification requires offshore coating system approval; accelerated corrosion is assessed by ISO 9227:2022 neutral salt spray for ≥1,500 h with scribe creep ≤3 mm, and cathodic disbondment resistance is screened by ASTM G8-19 on a planned defect coupon. Operational boundary: direct application of the PA11 topcoat to bare carbon steel in permanent splash-zone service produces a higher undercutting frequency if the zinc-rich primer is mechanically damaged; installed corrosion control systems therefore require periodic inspection under NACE SP0108-2008. Finished component categories include offshore cable trays, junction box brackets, instrument stands, small-bore pipe supports, and walkway handrail accessories.
Within food processing equipment lines, alkaline washdown at 60–80 °C creates cyclic moisture adsorption and desorption at the polymer-steel interface; blistering is controlled by applying an epoxy primer at 5–10 µm and then depositing the 5913 BLUE RDP 15-10 FB topcoat at 300–350 µm. Stainless steel conveyor rollers and guides are degreased to remove animal fats, grit-blasted with aluminum oxide to an anchor profile of 40–60 µm, preheated to 240–280 °C, and dipped in a fluidized bed for 4–8 s. The topcoat is applied at 100 wt% as supplied, and at 350 µm the theoretical consumption is 364 g/m² at 1.04 g/cm³; reclaimed powder is generally excluded from food-contact production to avoid cross-contact and lot traceability failures. Compliance for the base PA11 resin is evaluated under FDA 21 CFR 177.1500 and EU 10/2011; the blue pigment package must separately meet applicable food-contact colorant requirements, and assembled equipment must satisfy NSF/ANSI 51 or EC 1935/2004 as applicable. Abrasion resistance is measured under ASTM D4060-19 using CS-17 wheels at 1,000 g load; surface hygiene validation relies on plant-specific ATP swab limits, and the coating carries no antimicrobial claim. Operational boundary: sharp-edged cutting blades and shear plates should not be coated, because fused film thickness at a 90° edge can fall below 100 µm and fail hygiene-inspection coverage requirements. Finished product categories include conveyor rollers, guide rails, hopper liners, twist-conveyor discs, and small stainless steel mixer paddles.
Thermal expansion differentials on cast aluminium street furniture remain a principal adhesion variable when 5913 BLUE RDP 15-10 FB is applied over curved seat slats and hollow bollard sections. Cast aluminum parts are degreased, sweep-blasted to ISO 8501-1 Sa 2½ with a fine grit that maintains an anchor profile of 30–50 µm, and preheated to 260–300 °C; fluidized-bed dipping for 3–7 s produces a topcoat thickness of 250–350 µm. The corresponding theoretical topcoat loading ranges from 260 g/m² to 364 g/m² at 1.04 g/cm³; electrostatic spray may be substituted for large flat panels, with transfer efficiency of 55–75 % and overspray recovery limited to ≤20 wt% after screening at 200 µm. Coastal exposure durability is specified under ISO 12944-6:2018 for C4–C5 high-durability systems; accelerated corrosion testing uses ISO 9227:2022 for 1,000–2,000 h with scribe creep ≤4 mm, and adhesion after exposure is checked under ISO 2409:2020. The UV resistance of the blue pigmented film is not equivalent to an architectural liquid PVDF topcoat; if color retention is contractually relevant, exposure testing under ISO 16474-2:2013 Method A should be specified separately. Operational boundary: welds on steel assemblies must receive a zinc-rich stripe coat before PA11 topcoat application, otherwise rust bleeding occurs at weld toes. Finished parts include coastal pedestrian bollards, bench slats, handrail sleeves, lighting column base covers, and bicycle parking racks.
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Arkema Rilsan Fine Powders 5913 BLUE RDP 15-10 FB is a semicrystalline polyamide 11 powder coating grade based on 11-aminoundecanoic acid chemistry. The polymer is a long-chain polyamide with a solid density of approximately 1.03–1.04 g/cm³ when tested under ISO 1183-1:2019, and the unfilled resin typically exhibits a peak melting temperature near 186 °C by ISO 11357-3:2018. The grade name combines the 5913 base resin series, a blue pigment package, and the RDP 15-10 FB particle-size and morphology suffix. The suffix is not a generic industry descriptor; it is an Arkema-specific designation that must be read against the current technical data sheet because particle-size distribution, flow additive content, and tribo-charging behavior can vary within the 5913 series. Compared with PA6 and PA66 powder coatings, unfilled PA11 shows lower equilibrium moisture uptake and more stable dimensions in humid service. Compared with PA12 powder grades, PA11 typically exhibits a higher melting point and a harder surface response, although the exact elastomeric and optical properties are controlled by the pigment and additive system.
Rilsan PA11 fine powders are supplied for protective metal coating by electrostatic spray or fluidized bed immersion. The blue pigmentation in 5913 BLUE RDP 15-10 FB is dispersed in the polyamide matrix and is intended to remain stable through melt flow-out; however, color response in gas catalytic or infrared ovens should be confirmed because pigmented PA11 can absorb radiant energy differently from natural or black grades. The polyamide matrix confers low coefficient of friction, high abrasion resistance, and sound-damping behavior on coated metal parts. The long-chain polyamide structure also provides resistance to aliphatic hydrocarbons, glycols, and alkaline cleaning fluids under intermittent contact, but continuous immersion in strong acids or polar solvents is outside the recommended boundary for this polymer class.
Differences between the 5913 BLUE RDP 15-10 FB and standard Rilsan PA11 powder grades arise from the pigment type, particle-size control, and application-specific flow and fluidization behavior. The 5913 base series is part of the fine powder range used for electrostatic spray and fluidized bed dipping; the RDP 15-10 FB suffix identifies a fine-particle variant whose median particle size and upper cut are not identical to coarse fluid-bed-only grades. On the production floor, the distinction appears in feeding: finer grades meter more uniformly through single-screw hopper augers and maintain a stable powder cloud at lower air velocities in a fluidized bed, but they may carry less electrostatic charge at low relative humidity. The blue pigment alters surface charge decay compared with unfilled natural powder. This affects transfer efficiency in corona-charged electrostatic guns; operators generally compensate by adjusting gun voltage between 60 kV and 100 kV and by controlling powder feed pressure to reduce free ions. Published data for this specific blue grade is limited for quantitative charge-to-mass ratios; values should be measured on the actual application line using a Faraday pail system and transfer efficiency methods such as ASTM D6189-97(2022).
Compared with PA12 coating powders, PA11 has a higher melting point, which requires higher metal preheat in fluidized bed dipping and longer cure after the substrate reaches temperature. Compared with PA6 and PA66, PA11 is less hygroscopic, reducing the incidence of pinholes caused by steam evolution during melt flow-out. The blue grade should not be assumed to be identical to black or natural Rilsan powders of the same series for electrostatic parameters; pigment-specific conductivity and charge acceptance must be evaluated before converting a line from another color.
Powder deposition on corona-charged lines is governed by particle-size distribution, moisture content, and the electrical resistivity of the polyamide surface. For PA11 fine powders, surface resistivity is commonly above 1013 Ω per IEC 62631-3-2:2016, which supports charge retention but also permits back-ionization when film thickness exceeds 250–350 µm. The blue pigment system can shift this response by adding inorganic or organic colorants that alter charge leakage through the deposited layer. In production-scale booths, a common failure mode is the formation of starved regions inside deep recesses where the Faraday cage effect prevents charged particles from reaching the grounded substrate. The use of tribo-charging guns, lower transfer voltage, or reduced spray distance may improve penetration, but the final choice depends on measured charge-to-mass ratio of the 5913 BLUE lot.
Moisture control is critical because polyamide powders absorb atmospheric water, and absorbed water reduces resistivity and changes the glass transition. Packaging should remain sealed when the plant relative humidity exceeds 60% RH. If storage humidity has exceeded the supplier limit, pre-drying at 80 °C for 4 h in a desiccant air dryer with a dew point below -40 °C is a typical starting condition for unfilled PA11 powders; the exact drying profile for 5913 BLUE should be taken from the Arkema technical data sheet. A powder hopper with a vibratory screen mesh of 125–150 µm removes agglomerates and reduces gun spitting. Reclaim operations require care: because blue pigments can segregate in cyclone reclaim, the reclaimed fraction is typically blended with virgin material at no more than 30 wt% to maintain color consistency and charge stability unless the production line has validation data showing otherwise.
Fluidized bed dip coating of grey iron or steel parts with 5913 BLUE RDP 15-10 FB requires the substrate to carry enough heat to melt and coalesce the powder after removal from the bed. Preheat temperatures from 250 °C to 350 °C are used for unfilled PA11, with the lower end suited to thick-walled parts and the upper end needed for thin sheet metal that cools rapidly. The part is immersed in the air-fluidized powder bed for 3–10 s; coating thickness then depends on part heat capacity, preheat temperature, and bed temperature. Underheated parts produce porous, low-gloss deposits with poor adhesion. Overheated parts can cause discoloration of the blue pigment and polymer degradation; the melt is then too low in viscosity and drains from vertical surfaces before solidification. The fluidizing air should have a dew point below -40 °C, and the bed should be maintained between 20 °C and 35 °C. Post-heating at 190–220 °C for 5–15 min after the substrate reaches temperature completes flow-out and crystallinity development. Published data for the blue grade in gas catalytic or infrared ovens is limited; color acceptance should be set using a spectrophotometer on production parts rather than on natural PA11 standards.
For grey iron castings with wall sections above 6 mm, the heat reservoir is sufficient for fluidized bed dipping without auxiliary post-heat, but the process window narrows when the cast surface has graphite flake inclusions or residual foundry sand. The cleaning operation before coating determines adhesion; an iron phosphate or zinc phosphate pretreatment under ISO 9717 or equivalent is used to passivate the surface and increase the coating’s wet adhesion. On production lines, the parts are frequently preheated in a forced-convection oven at 300 °C to 320 °C, dipped into the powder bed, and then shaken or vibrated to remove loosely attached powder. Film thickness is controlled at 200–500 µm for industrial protection; thickness below 200 µm risks insufficient barrier action at edges, while thickness above 500 µm can produce internal stress and cracking after rapid cooling. The blue PA11 coating is evaluated for adhesion by the pull-off method under ISO 4624:2016, and for cupping resistance under ISO 1520:2006. Because PA11 is semicrystalline, cooling rate changes crystallinity and impact behavior. In thick coatings quenched in cold water, lower crystallinity can improve impact but may reduce surface hardness; slow air cooling produces higher crystallinity and better chemical resistance at the expense of some flexibility. That trade-off must be resolved on the actual part geometry.
Salt-spray resistance of the coated steel is commonly assessed under ISO 9227:2017 NSS. Unfilled PA11 coatings on correctly phosphated steel above 250 µm are commonly reported to withstand more than 1,000 h of neutral salt spray without base-metal corrosion on undamaged areas; scribe creep resistance depends on edge preparation, adhesion, and pretreatment. Immersion in hydrochloric acid, concentrated nitric acid, or strong polar solvents such as methanol and hot phenols is outside the recommended chemical resistance envelope for PA11. Long-term contact with hot glycol-based coolants should also be validated because the polymer may lose mechanical properties and the blue pigment may extract or fade. Avoid compounding or topcoating with amine-based additives because residual amines can accelerate thermo-oxidative degradation of the polyamide during the cure cycle. Outdoor exposure may shift the blue color under UV; weatherability should be assessed under ISO 4892-2:2013 or ISO 16474-2:2013 rather than inferred from indoor color data.
Unfilled PA11 base resin used in the 5913 series is characterized by a melt temperature near 186 °C per ISO 11357-3:2018 and a crystallization temperature near 160 °C under the same standard. The melt volume-flow rate of unfilled PA11 is commonly measured under ISO 1133-1:2022 at 235 °C with a 2.16 kg load; values for powder coating grades are not identical to injection molding grades because the molecular weight and additive package are selected for film flow and edge coverage. Unfilled PA11 extrusion or molding grades typically show tensile yield stress near 40–45 MPa under ISO 527-2:2012, with elongation at break above 200%; powder coatings may show lower elongation because of microvoids and thermal history. Shore D hardness of unfilled PA11 is typically 70–75 under ISO 868:2003. The glass transition temperature of dry PA11 is near 40–50 °C, which supports impact resistance at low temperatures and explains the polymer’s toughness on metal parts exposed to stone chipping. Published values for the 5913 BLUE grade’s film properties should be obtained from the supplier’s datasheet, as pigment addition and particle-size distribution can shift the final mechanical profile.
For electrostatic spray, the flow properties of the powder are evaluated by measuring angle of repose, avalanche angle in a rotating drum, and fluidization index. These are not standardized in the same way as melt tests, but the specification commonly includes a maximum retained fraction on a 125 µm sieve and a controlled median particle size. A finer median size can improve thin-film smoothness but reduces fluidization; a coarser size aids fluidized bed dipping but can create an orange-peel surface in electrostatic spray. The 5913 BLUE RDP 15-10 FB suffix is the supplier’s method of defining that compromise for blue-pigmented powder.
Batch-to-batch control of a pigmented PA11 powder coating demands monitoring four parameters: melt flow rate, moisture content, particle-size distribution, and colorimetric values. On a twin-screw compounding line, the blue pigment is dispersed into the PA11 melt at temperatures high enough to avoid agglomerates but below the degradation threshold; poor dispersion appears in the final coating as pigment specking or local loss of adhesion. During powder production, cryogenic grinding is used to control particle shape. Irregular particles from ambient grinding may fluidize well but can show lower electrostatic transfer efficiency; spherical particles from wet or thermal rounding can spray more uniformly but may segregate in reclaim. The processing behavior of the 5913 BLUE RDP 15-10 FB is therefore not determined solely by the base PA11 chemistry. It depends on the pigment dispersion quality, particle morphology, and the additive package. Compared with epoxy powder coatings, PA11 offers higher impact toughness and resistance to stone chipping but requires a higher melt temperature and cannot be processed at the low cure schedules typical of epoxy. Compared with polyamide 6 powder coatings, PA11 provides lower water absorption and better retention of mechanical properties in humid environments. Compared with polyamide 12 powder coatings, PA11 generally has a higher melting point and greater stiffness, but PA12 may offer lower saturated water uptake. The selection between these materials should be based on service temperature, chemical exposure, and color stability requirements of the final coated article.
