| HS Code | 529654 |
| Density | 1.03 g/cm³ |
| Tensile Modulus Conditioned | 480 MPa |
| Tensile Stress At Break Conditioned | 38 MPa |
| Tensile Strain At Break Conditioned | >50% |
| Flexural Modulus Conditioned | 450 MPa |
| Charpy Impact Strength Conditioned 23 C | No break |
| Charpy Notched Impact Strength Conditioned 23 C | 50 kJ/m² |
| Melting Temperature | 178 °C |
| Heat Deflection Temperature 1 8 Mpa | 50 °C |
| Vicat Softening Temperature | 160 °C |
| Water Absorption Saturation | 1.5% |
| Mold Shrinkage | 0.4% |
As an accredited EMS-Grivory Grilamid L XE 10953 black Nylon 12, Conditioned factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Supplied in sealed, moisture-proof 25 kg bags; conditioned black Grilamid L XE 10953 nylon 12 granules, ready for processing. |
| Container Loading (20′ FCL) | 20′ FCL container loaded with EMS-Grivory Grilamid L XE 10953 black Nylon 12 (conditioned), palletized bags secured for transport. |
| Shipping | EMS-Grivory Grilamid L XE 10953 black Nylon 12 (conditioned) ships as solid granules in sealed moisture-barrier bags. Keep dry and avoid humidity exposure. Standard thermoplastic handling applies. Non-hazardous under normal transport conditions, but protect from excessive heat and direct sunlight. Store in original packaging until use. |
| Storage | Store in a cool, dry place in its original, tightly sealed container to prevent moisture absorption, which can alter the conditioned properties of this Nylon 12. Avoid direct sunlight, heat, and UV exposure. Keep away from strong oxidizers. Ensure good ventilation. Under proper conditions, shelf life remains optimal for processing and performance. |
| Shelf Life | Store unopened in original packaging, cool and dry. Shelf life is typically two years from manufacture date. |
For coiled trailer air brake lines, EMS-Grivory Grilamid L XE 10953 black Nylon 12 in the conditioned state is fed to a 45 mm single-screw extruder with a 25:1 L/D ratio and an enclosed, air-cooled feed throat. The first process conflict is moisture management: although the grade is supplied conditioned, granulate stored above 0.10 wt% water must be dried to 0.08 wt% or lower by a desiccant dryer delivering a -40°C dew point at 80°C for 4 h before melting. Barrel zones are set at 210°C, 220°C, 230°C, 235°C, and 235°C from throat to breaker plate; adapter and spiral mandrel die are held at 235°C. A gear pump between screw and die stabilizes melt-pressure fluctuation to ±0.2 MPa, preventing wall-thickness drift in the vacuum calibration sleeve. The coextruded construction uses an inner functional layer of 1.00 mm and an outer abrasion-resistant layer of 0.25 mm, giving a nominal 10 mm outside diameter and 1.25 mm total wall. Vacuum calibration is maintained at -0.4 bar while the tube travels through a 60°C water bath and a 40°C secondary cooling trough at 30 m/min line speed. Drying discipline is critical because free moisture above 0.12 wt% at melt temperature produces microvoids at the inner wall and pinholes that appear only during the SAE J844 pressure-retention test after 72 h thermal ageing at 100°C. Post-extrusion conditioning is then performed in a 70°C water bath for 6 h, followed by sealed storage, shifting the polyamide 12 matrix toward equilibrium moisture of approximately 0.6–0.8 wt% at 23°C and 50% relative humidity. The terminal product is a coiled trailer air brake harness that must satisfy SAE J844, ISO 7628-1, and ISO 7628-2 for dimensional stability, low-temperature impact at -40°C, and minimum burst pressure after thermal ageing. In production audits, the dominant start-up failure is low melt temperature below 220°C, which produces helical weld lines at the mandrel spider legs; the corrective action is to raise all downstream zones to 235°C and reduce screw speed until die-exit melt temperature measured by infrared pyrometer exceeds 230°C.
Melt temperature at the injection nozzle is the first variable recorded because the conditioned grade retains approximately 0.15–0.25 wt% moisture, lowering melt viscosity and permitting a lower barrel profile than dry PA12. The application is a push-to-connect barbed fitting for industrial compressed-air circuits, moulded in a 4-cavity cold-runner tool with a 160 t hydraulic clamp and a 25 mm injection unit. Barrel temperatures are set at 230°C feed, 240°C compression, and 245°C metering, with the nozzle at 240°C; mould temperature is held at 70°C by a water manifold. The gate is a single submarine gate at the root of the barb, with a diameter of 1.2 mm. Part wall is 2.0 mm at the boss and 3.0 mm at the barb transition, with a rib root radius of at least 0.8 mm to avoid notch sensitivity in the impact-modified grade. If the nozzle falls below 220°C, the cold slug at the gate freezes before the packing phase can transmit holding pressure; the result is an annular void at the barb root that passes visual inspection but fails the ISO 14743:2004 leak test at 1.5× nominal working pressure. Nominal working pressure for the terminal M8 and M10 push-fit connectors is 10 bar at 23°C and 7 bar at 60°C. Maximum residence time is 8 min at 245°C; longer residence produces visible black-surface degradation and a fall in melt viscosity recorded as a reduction in screw recovery time. The compliance matrix for the finished article includes REACH 1907/2006, RoHS 2011/65/EU, and the dimensional requirements of ISO 6150 for plug-in connectors. Production-line data show that a mould temperature below 40°C raises post-mould shrinkage after 72 h to 1.8–2.2%, causing interference-fit drift and barb pull-out failure; the corrective action is to raise mould temperature to 70°C and verify in-pack moisture at 0.15–0.25 wt% before dry-out.
Bunched copper conductors for wind-turbine pitch-control cables require a jacket that remains flexible after repeated low-temperature cable-track loading at -40°C and does not embrittle under salt-spray exposure. The conditioned PA12 is pressure-extruded over a 0.5 mm² stranded bare-copper bundle with a 0.25 mm semi-conductive screen and a 0.75 mm polypropylene insulation layer. Final jacket wall is 0.40 mm over a core diameter of 2.0 mm. Before extrusion, the granulate is exposed to 23°C and 50% relative humidity for 24 h to reach a surface moisture of 0.15–0.25 wt%, which reduces melt temperature sensitivity and prevents spherulitic size gradients. Processing uses a 30 mm single-screw extruder with a 24:1 L/D ratio and a barrier screw without compression relief, fitted with a 1.0 mm pressure die; barrel settings from throat to head are 210°C, 225°C, 235°C, and 240°C. Melt temperature at the die entry is kept between 235°C and 242°C, measured with a flush-mount probe. The cable passes through a 45°C water trough at 150 m/min, then a 60°C air oven for 4 h to relax orientation before winding. The critical discontinuity is melt fracture at the die land when apparent shear rate exceeds 1,200 s⁻¹; this produces sharkskin on the outer surface that reduces abrasion resistance and creates microtears during bending. Screw speed is limited to 35 rpm to keep shear rate below 900 s⁻¹. Compliance testing for the jacket includes RoHS 2011/65/EU, REACH SVHC screening, and low-temperature bend testing according to IEC 60811-503 at -40°C using a mandrel diameter of 4× outer diameter. The terminal product is a 3-core or 5-core pitch-control cable for wind-turbine nacelle installations, with the PA12 jacket also acting as an oil-resistant containment layer in the rotor hub. Published data for this specific impact-modified conditioned PA12 against cable-specific oils is limited; compatibility screening with the turbine-mandated gearbox oil is therefore recommended on every batch.
The connector is gated at the barb root to orient weld lines away from the burst-critical hoop stress path, and the 6-cavity hot-runner tool is balanced to a fill variation of less than 2%. The part is an injection-moulded quick connector for selective catalytic reduction urea lines, exposed to 32.5 wt% aqueous urea solution that freezes at -11°C. The material is the impact-modified PA12 conditioned to 0.15–0.25 wt% moisture; this moisture level reduces cold-temperature brittleness without causing hydrolytic degradation during melt processing. Barrel temperatures are set at 230°C feed, 245°C compression, and 250°C metering, with a hot-runner manifold at 245°C and nozzle tips at 240°C. Mould temperature is 80°C to ensure crystallization above the cold-cracking threshold. Holding pressure is 60 MPa for 4 s, followed by 30 s cooling. The critical process conflict is frozen urea solution between service intervals; if the connector is brittle below -20°C, expanding ice creates hoop stress that initiates cracks at gate remnants. The acceptance test is burst-pressure measurement after 50 freeze-thaw cycles between -20°C and 60°C in 32.5 wt% urea solution, with no leakage at 3 bar for 30 s. Gate geometry is 1.0 mm diameter with a 0.3 mm land to generate controlled shear heating and eliminate cold-slug ejection. The formulation ratio is not altered by the moulder; the grade is used as supplied without regrind, because black impact-modified PA12 loses notched Charpy performance when reprocessed above 20 wt% regrind addition. The terminal product is a 9.5 mm quick connector meeting ISO 22241-3:2017 for diesel exhaust fluid handling and SAE J2044 for evaporative emissions. Dimensional checks are made after 48 h conditioning at 23°C and 50% relative humidity; parts measured immediately after ejection show 0.8–1.0% diameter shrink bias that reverses after moisture uptake.
Corrugator vacuum stability becomes the limiting variable when the conditioned PA12 is extruded into 25 mm outside diameter energy-chain conduit with a 6.0 mm corrugation pitch and a 0.4 mm wall. The process uses a 38 mm single-screw extruder with a 30:1 L/D ratio and a barrier screw; barrel temperatures are 210°C, 220°C, 230°C, and 235°C, with a die temperature of 235°C. The melt is drawn into corrugator mould blocks, where vacuum is pulled at -0.5 bar through micro-porous vents. Vacuum decay of more than 0.05 bar from mould-block seal wear causes pitch variation of ±0.3 mm and inner diameter ovality above 0.2 mm, both of which are rejected by IEC 61386-23 bend tests because the conduit kinks at the corrugation trough. The ratio of groove depth to wall thickness is set at 1.0 mm to 0.4 mm, giving a 2.5:1 draw-depth ratio that the impact-modified grade can reproduce without tearing at a line speed of 12 m/min. After forming, the conduit is cooled in a 40°C water bath and then conditioned for 48 h at 23°C and 50% relative humidity to stabilize the snap-fit closure. The terminal product is a non-flame-retarded corrugated conduit for moving cable carriers in machine tools, meeting low-smoke and halogen-free construction expectations common in European machinery directive conformity. The grade is used without flame-retardant additives; therefore the conduit is limited to installations where UL 94 HB classification is acceptable. The dominant process failure is condensate accumulation in corrugator vacuum lines; if moisture in the regrind layer exceeds 0.10 wt%, water vapour reduces vacuum efficiency and produces pinholes at the groove root. The corrective action is to drain the vacuum reservoir every 8 h and dry any added regrind to below 0.08 wt% before blending with virgin material at a 10 wt% ratio.
Hydraulic pilot circuits in mobile machinery impose rapid pressure pulses from 0 bar to 35 bar at 1 Hz, which cause fatigue crack propagation through the inner wall if the conditioned PA12 is processed with excessive frozen-in orientation. The line is a 6 mm outside diameter hydraulic pilot tube with a 0.9 mm wall, extruded on a 30 mm single-screw line with a 24:1 L/D ratio, using a gear pump and a rotating puller to control diameter to 6.00 ± 0.05 mm. Barrel profile is 215°C, 225°C, 235°C, and 235°C; the melt exits at 238°C into a spiral die with a 0.5 mm gap. The conditioning level of 0.15–0.25 wt% moisture reduces melt stiffness and permits a lower drawdown ratio; the draw ratio between die annulus and final tube is restricted to 1.5:1 to avoid axial orientation. The acceptance test for the hydraulic pilot line is impulse testing according to ISO 6803:2017, with 1 million pressure cycles from 0 bar to 35 bar at 60°C and zero leakage. The dominant process failure is inner-wall axial cracking caused by excessive drawdown above 2.0:1; this is corrected by raising the vacuum calibration temperature to 50°C and reducing puller speed to keep axial shrinkage below 3%. The terminal product is a pilot control line for agricultural load-sensing systems, with push-in fittings at both ends. Because the grade is unfilled and impact-modified, the line is not intended for high-pressure service above 70 bar; burst pressure at 23°C should be verified on each extrusion batch after 24 h moisture stabilization at 50% relative humidity.
A wall-thickness variation above 0.05 mm in a compressed-air recoil hose produces kinking under partial vacuum and premature cracking at the helix transition when the conditioned PA12 is used as the outer wear layer. The hose is a 8 mm outside diameter spiral-recoil assembly with a 1.0 mm total wall and a 3.0 mm helix rib, extruded on a 45 mm single-screw line with a 25:1 L/D ratio and a rotating die head for spiral profile formation. Barrel temperatures from feed to head are 210°C, 220°C, 230°C, and 235°C; melt temperature at the die is 238°C. The conditioned moisture content of 0.15–0.25 wt% lowers melt pressure at the die by approximately 10–15% relative to dry PA12, permitting the spiral profile to form without excessive head pressure. The terminal product operates at 10 bar workshop air pressure and must meet ISO 5774:2016 for general-purpose compressed-air hoses, including burst-pressure verification at 4× working pressure. The functional ratio is set by the die gap: the inner tube is 0.6 mm, the outer sheath is 0.4 mm, and the helical reinforcement cavity is 0.5 mm deep, giving a total wall of 1.0 mm and a rib height of 3.0 mm. The main process failure is wall-thickness drift caused by melt-pressure oscillation above ±0.3 MPa; a gear pump is mandatory between screw and rotating die to hold output variation below 2%. Cooling is staged in a 55°C water bath followed by a 25°C air blast, and the hose is conditioned at 23°C and 50% relative humidity for 72 h before burst testing. The application boundary is that the black impact-modified PA12 is not intrinsically flame-retardant, so the finished recoil hose should be excluded from installations requiring UL 94 V-0 jacketing.
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EMS-Grivory Grilamid L XE 10953 black Nylon 12, Conditioned, is a polyamide 12 grade supplied as a pre-compounded black compound. The product is identified under ISO 1043 as PA12 and is reported in the conditioned state after accelerated moisture balancing in accordance with ISO 1110. Conditioning generally involves exposure to 70°C/62% RH until the water content corresponding to standard atmosphere 23°C/50% RH is reached, using ISO 291 laboratory atmosphere as the reference environment. This sample state is material because PA12 tensile and impact properties change measurably with water absorption. Dry-as-molded values should not be compared directly to conditioned values without stating the sample basis. The Grilamid L prefix denotes the PA12 platform, while the XE 10953 suffix is an EMS-Grivory internal grade identifier for a specific molecular-weight, additive, and pigment configuration. The black designation may be associated with a carbon black package; carbon black can modify ultraviolet resistance, surface resistivity, and weld-line performance. Published data for this specific configuration is limited in secondary sources, so numerical values below are family-level PA12 benchmarks unless the EMS-Grivory grade-specific datasheet is expressly referenced.
Conditioned polyamide 12 specimens are typically exposed to 70°C/62% RH in a controlled chamber until the specimen mass reaches the equilibrium level equivalent to 23°C/50% RH. Process parameters and tolerances are defined in ISO 1110. Water absorption at equilibrium for PA12 is lower than for PA6 and PA66. For PA12 at 23°C/50% RH, equilibrium water content is generally 0.6% to 0.8% by mass, compared with 2.5% to 3.0% for PA6. This lower moisture affinity reduces property shift between dry and humid environments and limits moisture-induced dimensional change. Documentation for conditioned material should state whether values are dry-as-molded or conditioned. The designation block under ISO 1874-1 provides the polyamide family, viscosity number, and modification information. If a certificate of analysis reports properties without sample conditioning, those values are not comparable to conditioned data. The processor should also retain the batch certificate, material safety data sheet, and grade-specific processing datasheet from EMS-Grivory.
Moisture acts as a plasticizer in polyamide 12. At 23°C/50% RH, hydrogen-bond disruption lowers tensile modulus and yield stress while increasing tensile strain at yield and notched impact energy. For generic unmodified PA12, dry-as-molded tensile modulus commonly lies between 1500 MPa and 1800 MPa under ISO 527-1/-2; after conditioning, tensile modulus may fall to 1100 MPa to 1300 MPa. Tensile stress at yield shifts from approximately 40 MPa to 50 MPa dry to 35 MPa to 45 MPa conditioned. Notched Charpy impact energy at 23°C increases under ISO 179-1/1eA as moisture content rises. Electrical properties also shift because surface moisture raises dielectric constant and lowers surface resistivity. Family-level PA12 dry volume resistivity may be near 1014 Ω·m under IEC 62631-3-1, while conditioned surface resistivity can fall by orders of magnitude. Grade-specific values for Grilamid L XE 10953 black must be read from the EMS-Grivory datasheet; family-level PA12 data must not be substituted for design values.
| Property | Unit | Dry-as-molded | Conditioned | Test method |
|---|---|---|---|---|
| Density | g/cm³ | 1.01–1.02 | 1.01–1.02 | ISO 1183-1 |
| Tensile modulus | MPa | 1500–1800 | 1100–1300 | ISO 527-1/-2 |
| Tensile stress at yield | MPa | 40–50 | 35–45 | ISO 527-1/-2 |
| Tensile strain at yield | % | 5–10 | 10–25 | ISO 527-1/-2 |
| Notched Charpy impact at 23°C | kJ/m² | 5–10 | 7–15 | ISO 179-1/1eA |
| Equilibrium moisture content | wt% | — | 0.6–0.8 | ISO 1110 |
Water molecules diffuse into the amorphous phase of PA12 and disrupt interchain hydrogen bonding. This reduces the glass transition temperature and tensile modulus while increasing chain mobility. The crystalline domains remain largely unaffected at room temperature, so melting temperature and density are not altered to the same extent as tensile properties. Because PA12 has a relatively low amide group density compared with PA6 or PA66, equilibrium water uptake is lower, which limits the modulus reduction. The conditioned state therefore represents a more realistic service condition for parts exposed to atmospheric humidity. A component designed only on dry-as-molded stiffness may be too stiff in service but may gain impact safety margin after conditioning. For snap-fit, tube, and cable-jacket behavior, the relevant comparison is usually conditioned notched impact energy and conditioned tensile modulus rather than dry-only values. This is why EMS-Grivory datasheets for PA12 grades commonly report both dry-as-molded and conditioned mechanical data.
In moisture-equilibrated PA12, lower tensile modulus and higher elongation at break can alter clamp-snap assembly recovery, pressure retention in tubing, and creep response. For pneumatic tubing, cable sheathing, and fluid-handling components, the shift is typically managed by specifying minimum conditioned notched impact energy and maximum conditioned tensile modulus. Low-temperature performance of PA12 is characterized by ISO 179-1/1eA at -30°C; family-level unmodified PA12 grades often retain notched Charpy impact values from 4 kJ/m² to 8 kJ/m² at -30°C after conditioning. Exact low-temperature values for Grilamid L XE 10953 black must be verified from the manufacturer’s data.
Although the exact melt volume-flow rate of Grilamid L XE 10953 black is grade-specific, PA12 extrusion grades are typically processed at melt temperatures between 220°C and 250°C. At melt temperatures above 260°C or with holdup times longer than 10 min, thermal-oxidative degradation can reduce molecular weight and produce yellowing. Single-screw extruders with L/D ratios from 24:1 to 30:1 and compression ratios from 2.5:1 to 3.5:1 are common for PA12 tubing and profile extrusion. The pre-drying hopper should deliver air with a dew point of -30°C to -40°C; hopper temperature of 80°C for 4–8 h is a typical starting point for unmodified PA12. Residual moisture above 0.15% at the feed throat can produce surface splay and hydrolytic molecular weight loss. Injection molding of PA12 usually uses barrel settings from 220°C to 250°C, mold temperatures from 40°C to 80°C, and back pressures of 0.5 MPa to 1.0 MPa. Exact parameters must be taken from the manufacturer’s processing datasheet. Grade-specific melt volume-flow rate can be determined under ISO 1133-1; common PA12 test conditions include 235°C/2.16 kg, but the applicable condition for XE 10953 black should be confirmed.
When the material is stored in high-humidity conditions, uncontrolled moisture absorption can occur before processing. The conditioned state is not a permanent property; parts dried after molding will revert toward dry-as-molded stiffness and lower impact. Processing at relative humidity above 60% without sealed storage or adequate drying can cause dimensional variation and surface defects. The grade should not be used in prolonged contact with strong acids, phenols, or oxidizing media without validation. Carbon-black-containing black polyamide grades may show reduced weld-line strength compared with unpigmented versions; weld-line performance should be checked under ISO 527-2 using multipurpose test specimens with an intentional weld line.
PA12 is often specified when a part must retain ductility below -20°C while resisting aliphatic hydrocarbons, greases, and zinc chloride stress cracking. Compared with PA6 and PA66, PA12 has a lower amide group density, which reduces equilibrium water absorption and limits moisture-induced dimensional change. Density for PA12 is typically 1.01 g/cm³ to 1.02 g/cm³ under ISO 1183-1, while PA66 is approximately 1.14 g/cm³. This density difference can reduce mass in automotive and pneumatic components. The lower melting point of PA12, typically 175°C to 180°C by ISO 11357-3, also reduces processing energy relative to PA66 but lowers continuous-use temperature under load. Black pigmentation may improve ultraviolet stability for exposed tubing or cable jackets, but the effect depends on pigment type and particle size. For fuel-contact applications, grade-specific permeation and compliance testing under SAE J2260, SAE J844, or equivalent OEM standards may be required. No fuel-contact certification is implied without written confirmation from EMS-Grivory.
Compared with glass-fiber-reinforced PA12 grades such as Grilamid L 20 G, the XE 10953 designation is expected to exhibit lower tensile modulus, lower tensile stress at yield, and higher tensile strain at break because it is not designated as a glass-fiber compound. Glass-fiber levels near 20 wt% in PA12 can raise dry tensile modulus above 4000 MPa, whereas unmodified family-level PA12 remains below 2000 MPa. The lower modulus can reduce notch sensitivity and improve clamp-snap assembly recoverability. Compared with natural PA12, a black grade should be evaluated for surface resistivity and laser-marking contrast if those properties are relevant. In all cases, the user must request the EMS-Grivory material datasheet for grade-specific dry and conditioned values because published data for this specific configuration is limited.
Documentation for a conditioned PA12 compound should include the ISO designation block under ISO 1874-1, batch certificate, material safety data sheet, and regulatory statements for REACH, RoHS, and, where applicable, FDA 21 CFR. These documents are grade-specific and must be obtained from EMS-Grivory. General secondary-source data cannot establish food-contact or medical clearance.
