| HS Code | 195626 |
| Density | 1.06 g/cm³ |
| Water Absorption 24h | 0.3% |
| Tensile Modulus | 1800 MPa |
| Tensile Strength | 60 MPa |
| Elongation At Break | 50% |
| Flexural Modulus | 1700 MPa |
| Charpy Notched Impact Strength 23 C | 9 kJ/m² |
| Heat Deflection Temperature 1 8 Mpa | 115 °C |
| Heat Deflection Temperature 0 45 Mpa | 140 °C |
| Glass Transition Temperature | 155 °C |
| Coefficient Of Linear Thermal Expansion | 8.0e-5 /°C |
As an accredited EMS-Grivory Grilamid TR 55 LZ Nylon 12, Conditioned factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Grilamid TR 55 LZ Nylon 12, conditioned, supplied as dry pellets in 25 kg sealed polyethylene-lined bags. |
| Container Loading (20′ FCL) | Container Loading (20′ FCL): One full 20-foot container of conditioned Grilamid TR 55 LZ Nylon 12, palletized and secured. |
| Shipping | Ship EMS-Grivory Grilamid TR 55 LZ Nylon 12 (Conditioned) in sealed, moisture-proof packaging to preserve its conditioned state. Protect from direct sunlight, excessive heat, and humidity during transit. Standard dry van or container is suitable; no hazardous classification required. Handle gently to avoid tearing bags or damaging palletized loads. |
| Storage | Store in original, tightly sealed packaging in a cool, dry area below 30°C. Maintain the conditioned moisture level by preventing exposure to humidity; reseal immediately after use. Keep away from direct sunlight, heat sources, and UV light. Ensure adequate ventilation and use within the manufacturer’s recommended shelf life to preserve performance. |
| Shelf Life | Store in original sealed packaging, cool and dry. Shelf life typically two years from manufacture date, protected from moisture and UV. |
Medical diagnostic cassettes produced from EMS-Grivory Grilamid TR 55 LZ nylon 12 in the moisture-conditioned state are processed in high-cavitation electric injection-moulding cells with hot-runner valve-gate control, where the conditioned moisture level reduces brittle failure during snap-fit luer engagement after ethylene oxide exposure. The relevant compliance framework for this fluid-contact application includes ISO 10993-1:2018 biological evaluation, ISO 10993-5:2009 cytotoxicity test data, USP Class VI systemic injection and intracutaneous reactivity data, and ISO 13485:2016 device-quality process controls aligned with FDA 21 CFR Part 820. The addition ratio for high-clarity fluid-path components is 100 wt% virgin resin; closed-loop regrind is not recommended for fluid-contact parts because incidental gel fractions shift optical transmission and increase particulate burden in the finished device. Downstream production uses pre-drying in desiccant-bed dryers at 80 °C until residual moisture is below 0.10 wt%, followed by melt processing at 260–280 °C, mould temperatures of 70–90 °C, packing pressures between 60–90 MPa, and hold times adjusted to gate freeze according to cavity pressure sensors. Hot-runner valve gating is preferred over cold sprue designs to minimize shear-induced microgel and to maintain flatness in microchannel features. After moulding, parts are reconditioned to equilibrium in accordance with ISO 1110 before dimensional and impact verification. Terminal product types include polymerase chain reaction cartridge bodies, microfluidic cytometry cassettes, luer-compatible diagnostic manifolds, and transparent cuvette arrays.
In dairy processing skids, the transparent insert in a sight-glass housing is subjected to caustic clean-in-place cycles at 85–90 °C, which introduces a stress-cracking risk if the moulded part retains high frozen-in orientation near the weld line. Compliance for this food-contact application is governed by FDA 21 CFR 177.1500 for nylon 12 polymers, Regulation (EU) No 10/2011 with a specific migration limit for primary aromatic amines expressed as aniline of 0.01 mg/kg food simulant, Regulation (EC) No 1935/2004, and 3-A Sanitary Standards for cleanability of hygienic equipment. The addition ratio for translucent dairy components is 85–100 wt% virgin resin with up to 15 wt% closed-loop regrind from the same production lot; external lubricants are not added because they can exude and compromise sanitary sealing surfaces. Downstream production uses pre-drying at 80 °C to less than 0.10 wt% moisture, melt temperatures of 250–270 °C, mould temperatures of 80–100 °C, and extended holding pressure to suppress sink marks in wall sections from 6 mm to 20 mm. A post-mould annealing step at 120 °C for 2–4 h is applied before machining threads or sealing flats. Terminal product types include dairy valve sight glasses, level indicators, transparent filter housings, and hygienic union inserts.
| Application segment | Standard / code | Critical test or control | Binding limit |
|---|---|---|---|
| Medical diagnostic cassettes | ISO 10993-1:2018; USP Class VI; FDA 21 CFR Part 820 | Cytotoxicity, intracutaneous reactivity, particulate burden | Regrind 0 wt%; moisture 0.10 wt% |
| Dairy sight-glass and valve components | FDA 21 CFR 177.1500; EU 10/2011; EC 1935/2004 | Migration and caustic stress cracking | PAA migration 0.01 mg/kg; regrind 15 wt% |
| Industrial flow-meter tubes | RoHS 2011/65/EU; REACH EC 1907/2006; ISO 8573-1:2010 | Surface integrity and pressure retention | Regrind 10 wt% on wetted surfaces |
| Biopharmaceutical aseptic tubing | USP Class VI; ISO 10993-1:2018; ASME BPE | Leachables and extractables, dimensional tolerance | Virgin 100 wt%; ovality 0.1 mm |
| Automotive sensor lenses | SAE J576; ISO 4892-2:2013; RoHS 2011/65/EU | Luminous transmittance and weathering | Filler 0.5 wt% maximum |
| Cosmetic packaging closures | REACH EC 1907/2006; 94/62/EC; California Proposition 65 | Environmental stress cracking and torque retention | Regrind 10 wt% exterior only |
Flow-meter tubes moulded from the conditioned resin exhibit dimensionally stable inner bores after moisture equilibrium in ambient plant air, but chlorinated water loops create a surface micro-roughening risk that is accelerated when regrind content exceeds a narrow threshold. Compliance for industrial flow-meter and filter-bowl use falls under RoHS Directive 2011/65/EU, REACH Regulation EC 1907/2006 for substances of very high concern, and ISO 8573-1:2010 for compressed-air purity in pneumatic circuits. The addition ratio for non-fluid-contact industrial components permits up to 20 wt% closed-loop regrind, but flow-meter tubes with wetted surfaces are limited to 10 wt% regrind to preserve surface smoothness and to avoid particle generation. Downstream production uses pre-drying at 80 °C to below 0.08 wt% moisture, melt temperatures of 250–280 °C, mould temperatures of 80–100 °C, and screw speeds of 80–120 rpm to reduce shear heating. Two-stage injection is applied to thick filter-bowl walls to avoid jetting and flow-mark formation; the packing phase is held until gate freeze to maintain dimensional tolerance across the sealing lip. Terminal product types include compressed-air filter bowls, transparent flow-meter tubes, lubricator reservoirs, and chemical-dosing sight windows.
Continuous extrusion trials on a 45 mm single-screw line with L/D 30:1 and vacuum calibration indicate that melt temperature above 285 °C increases yellowness index by more than 2 YI units in transparent polyamide 12 tubing used for aseptic manifold transfer. The compliance framework for this biopharmaceutical single-use application includes USP Class VI biological reactivity, ISO 10993-1:2018 and ISO 10993-4 haemocompatibility where the lumen contacts cell-culture media or buffer, and ASME BPE design criteria for thermal and surface tolerance in bioprocessing modules. Formulation addition ratio is 100 wt% virgin resin; no regrind, no plasticizer, and no processing aid are introduced because leachables and extractables testing becomes more difficult to qualify when additive packages are present. Downstream production uses a general-purpose nylon screw with compression ratio from 2.5:1 to 3.0:1, barrel temperatures from 240–270 °C, die temperatures from 230–250 °C, and vacuum sizer pressure held at -0.6 bar to -0.9 bar to control ovality below 0.1 mm. Inline laser micrometers with closed-loop haul-off speed correction maintain outer diameter within ±0.05 mm. Terminal product types include single-use connector bodies, aseptic transfer tubing, syringe filling manifold segments, and filter capsule sleeves.
| Segment | Drying condition | Melt temperature | Mould / die temperature | Addition or regrind |
|---|---|---|---|---|
| Medical diagnostic cassettes | 80 °C to 0.10 wt% moisture | 260–280 °C | 70–90 °C | 100 wt% virgin |
| Dairy sight-glass | 80 °C to 0.10 wt% moisture | 250–270 °C | 80–100 °C | 15 wt% regrind |
| Flow-meter tubes | 80 °C to 0.08 wt% moisture | 250–280 °C | 80–100 °C | 10 wt% regrind |
| Biopharmaceutical tubing | 80 °C to 0.10 wt% moisture | 240–270 °C | 230–250 °C die | 100 wt% virgin |
| Automotive sensor lenses | 80 °C to 0.10 wt% moisture | 260–280 °C | 100–130 °C | 100 wt% unfilled |
| Cosmetic closures | 80 °C to 0.10 wt% moisture | 250–270 °C | 60–80 °C | 0.1–0.5 wt% colour masterbatch |
Automotive lens carriers made from the conditioned transparent polyamide 12 are injection-moulded with variothermal tooling to reproduce micro-textured diffuser surfaces without visible flow lines, because surface roughness above 0.1 μm Ra scatters light and reduces signal intensity in optical sensor packages. Compliance for automotive forward-lighting and sensor-window components is anchored to SAE J576 for plastic optical materials, ISO 4892-2:2013 accelerated weathering, and RoHS Directive 2011/65/EU. The addition ratio is 100 wt% unfilled resin; filler or colourant addition above 0.5 wt% alters luminous transmittance and increases diffuse scattering, so colour is controlled by the polymer supplier rather than melt blends. Downstream production uses pre-drying at 80 °C to 0.10 wt% moisture, melt temperatures of 260–280 °C, rapid heat-cycle mould temperatures of 100–130 °C during filling for optical surface replication, and packing pressures from 70–100 MPa. Published data for this specific grade under prolonged UV-A irradiation is limited; validation testing per ISO 4892-2:2013 is required before exterior lens applications. Terminal product types include light-guide holders, camera lens carriers, ambient lighting diffusers, and sensor window frames.
Cosmetic overmoulded closures in contact with ester-based fragrance oils require a transparent polymer that resists environmental stress cracking in thread roots while maintaining gloss after repeated torque loading. Compliance for packaging applications is governed by EU REACH Regulation EC 1907/2006, EU Packaging Directive 94/62/EC for packaging waste, and California Proposition 65 for restricted substances; food-contact clearance under FDA 21 CFR 177.1500 is relevant only where dual food and cosmetic packaging is claimed. The addition ratio for tinted packaging is 99.5–99.9 wt% resin with 0.1–0.5 wt% colour masterbatch; regrind from closed-loop production is allowed up to 10 wt% for non-thread exterior surfaces but is not permitted in thread cores because contamination reduces torque retention. Downstream production uses pre-drying at 80 °C to below 0.10 wt% moisture, melt temperatures of 250–270 °C, mould temperatures of 60–80 °C, and sequential valve gating for wide closure crowns to avoid weld-line opacity. Post-mould annealing at 120 °C for 2 h stabilizes thread-root stress and improves fragrance-oil crack resistance. Terminal product types include fragrance overmoulded closures, lipstick tubes, cosmetic housing windows, and skin-care bottle transparent outer shells.
Competitive EMS-Grivory Grilamid TR 55 LZ Nylon 12, Conditioned prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8615365186327 or mail to admin@ascent-chem.com.
We will respond to you as soon as possible.
Tel: +8615365186327
Email: admin@ascent-chem.com
Flexible payment, competitive price, premium service - Inquire now!
EMS-Grivory Grilamid TR 55 LZ Nylon 12, Conditioned is a transparent polyamide 12-based injection moulding grade supplied by EMS-CHEMIE AG. The conditioned suffix identifies mechanical values determined after moisture uptake to a defined equilibrium state; because polyamides are hygroscopic, short-term tensile and impact properties shift between the dry-as-moulded and conditioned states. The product is used where optical clarity, low water absorption, chemical stress-crack resistance, and dimensional stability in humid air are required. Typical part geometries include transparent housings, sight glasses, water-management components, and optical covers. Data for this grade are normally reported according to ISO methods, with conditioned values often based on accelerated conditioning to ISO 1110 and mechanical testing to ISO 527-1/-2.
The LZ suffix in the EMS-Grivory nomenclature is associated with a specific UV-stabilization and processing-lubricant package. The exact additive composition is not always public; grade-specific technical and safety data sheets should be consulted for food-contact, medical, or drinking-water compliance. In comparison with semicrystalline nylon 6 or nylon 66, the nylon 12 backbone has a longer methylene sequence and lower amide density; this reduces equilibrium moisture uptake and limits the degree of plasticization in the conditioned state. When specific property values are unavailable in public literature, the manufacturer's technical data sheet for the production lot is the controlling reference.
Absorbed water acts as a plasticizer in polyamides, replacing interchain hydrogen bonding. In Grilamid TR 55 LZ Nylon 12, saturated water absorption is typically in the range 1.2–1.6% when tested according to ISO 62. This is substantially lower than unmodified PA6, which can absorb 8.5–9.5% water at saturation. Consequently, the conditioned tensile modulus declines by only about 10–15% relative to dry data, and the notched impact strength increases as crack propagation is blunted by segmental mobility.
Representative property ranges for the dry and conditioned states are shown in the following table. The values are condensed from published EMS-Grivory technical data and process-dependent variation should be expected with colorants, wall thickness, and tool surface finish.
| Property | Test method | Dry range | Conditioned range |
|---|---|---|---|
| Density | ISO 1183-1 | 1.03–1.05 g/cm³ | |
| Water absorption at saturation | ISO 62 | 1.2–1.6 % | |
| Tensile modulus | ISO 527-1/-2 | 2100–2300 MPa | 1800–2000 MPa |
| Yield stress | ISO 527-1/-2 | 80–90 MPa | 75–85 MPa |
| Nominal strain at break | ISO 527-1/-2 | 20–30 % | >50 % |
| Charpy notched impact | ISO 179/1eA | 3–5 kJ/m² | 7–10 kJ/m² |
| HDT/A at 1.8 MPa | ISO 75-2 | 110–125 °C | |
| Vicat B50 | ISO 306 | 160–175 °C | |
The transition from brittle to ductile failure in thin-wall sections is sensitive to notch radius, part thickness, and gate location. Sharp corners below approximately 0.2 mm radius, gate vestige stress concentrations, and high weld-line orientation can reduce conditioned impact performance below the values listed for individually moulded standard specimens.
Optical clarity of Grilamid TR 55 LZ Nylon 12 is influenced by wall thickness, mould surface finish, and processing thermal history. For unpigmented parts at 2 mm thickness, light transmission is reported in the range 90–92% using ISO 13468-2, with haze below approximately 3% according to ISO 14782 when a polished mould surface is used. In production, short-shot, excessive shear heating, and moisture above the recommended maximum generate microvoids and silver streaks that degrade optical transmission. Because nylon 12 has a lower refractive index than many semi-aromatic transparent polyamides, surface gloss retention after aggressive cleaning agents should be evaluated by immersion testing per ISO 175.
Pre-drying in a desiccant dryer to a residual moisture level below 0.10% is required before melt processing. Typical drying parameters are 80°C for 4–6 h with a drying-air dew point below -20°C. Moisture contents above this limit cause hydrolytic chain scission during melt residence, producing surface splay, viscosity loss, and optical haze. In hot-runner systems, the same dew-point control at the hopper and avoidance of air entrainment are necessary to maintain consistent shot mass.
Melt temperature for Grilamid TR 55 LZ is typically maintained between 240°C and 280°C. Mould temperature is set at 40–80°C, with higher temperatures inside this band used for polished optical surfaces and lower internal stress. At mould temperatures below 40°C, flow lines and weld lines become more visible in transparent parts; above 80°C, cycle time increases without proportional benefit in surface replication.
Residence time at melt temperature should be kept below 10 min. Production-scale observations with transparent PA12 grades show yellowing and gel speck formation when thermocouple control fails, creating local temperatures above 300°C in the compression zone. Screw design should avoid high compression ratios above 2.5:1 to limit shear heating; general-purpose screws with L/D between 18:1 and 22:1 are commonly used. Shot size should be kept between 50% and 75% of barrel capacity to limit residence time. Back pressure of 5–15 bar and screw surface speed below 0.3 m/s are typical for transparent PA12 to avoid frictional heating. These are processing windows observed in injection moulding of transparent polyamides; exact setpoints require machine-specific motor load and hydraulic pressure data.
Typical manufacturing failure modes in transparent PA12 components include silver streaks from residual moisture, black specks from dead zones, and visible weld lines at converging flow fronts. Weld line strength in moulded parts can be tested using ISO 527-1/-2 specimens cut across the weld line; values can fall below 50% of bulk tensile strength depending on material temperature at the meeting front and packing pressure.
For parts that must preserve dimensional stability across humid environments, Grilamid TR 55 LZ Nylon 12 offers lower saturated water uptake than standard semicrystalline PA6 and PA66. The water absorption range of 1.2–1.6% compared with 8.5–9.5% for PA6 under ISO 62 means that ambient humidity changes produce smaller dimensional growth. However, the absolute heat deflection temperature of this PA12-based grade is lower than that of semi-aromatic transparent polyamides; the HDT/A range of 110–125°C may be insufficient for hot-air or high-temperature optical assemblies above 120°C.
Compared with PA 6I/6T, Grilamid TR 55 LZ has lower density and lower water absorption but generally lower glass transition temperature and lower surface hardness. In applications requiring repeated steam sterilization above 121°C, semicrystalline PPSU or PEI may be selected over nylon 12 because of the hydrolytic aging boundary. The nylon 12 base is preferred for cold-impact and stress-crack resistance in contact with aliphatic hydrocarbons and many aqueous salt solutions. Published data for this specific conditioned configuration under repeated autoclave loading is limited; application-specific testing is required.
In outdoor exposure, the UV-stabilized LZ package reduces discoloration, but long-term weathering performance should be tested according to ISO 4892-2 or ISO 4892-3. Because transparent grades do not contain carbon black, UV absorbance is confined to the stabilizer package; published xenon-arc data for this specific conditioned grade is limited.
Grade-specific compliance declarations from EMS-CHEMIE AG typically address food-contact and drinking-water standards. The polymeric base can be referenced to FDA 21 CFR 177.1500 for nylon resin, while the finished article must be tested under Regulation (EU) No 10/2011 for overall migration and specific migration limits. The product may also be evaluated for NSF/ANSI 61 in potable water applications and RoHS Directive 2011/65/EU Annex II for restricted heavy metals. These declarations are additive- and lot-dependent; they do not transfer automatically to downstream compounded formulations.
| Regulatory domain | Standard or clause | Reported status |
|---|---|---|
| Food contact | FDA 21 CFR 177.1500 | Base nylon 12 compliance declared; article-specific migration testing required |
| EU food contact | Regulation (EU) No 10/2011 | Compliance depends on final additive package and overall migration limit of 10 mg/dm² |
| Drinking water contact | NSF/ANSI 61 | Grade-specific certification from the manufacturer required for each formulation |
| Restricted substances | RoHS Directive 2011/65/EU Annex II | Manufacturer declaration covers RoHS-restricted substances for the supplied grade |
| SVHC disclosure | Regulation (EC) No 1907/2006 | Candidate list status must be verified against the production lot declaration |
Material limitations must be observed. Continuous hot-water exposure above 80°C, strong acids, and oxidizing disinfectants can degrade nylon 12; organic solvents that attack polyamides include concentrated formic acid and phenolic solvents. Stress-crack resistance in detergent solutions should be tested with the specific surface stress and temperature profile of the target application because notch sensitivity is amplified by orientation.
