| HS Code | 121373 |
| Product | LATI Latamid 12 H FE90 |
| Material | Polyamide 12 (PA12) |
| Heat Stabilized | Yes |
| Flame Retardant | UL94 V-0 |
| Density | 1.18 g/cm³ |
| Tensile Modulus | 2800 MPa |
| Tensile Stress At Break | 50 MPa |
| Elongation At Break | 5% |
| Flexural Modulus | 2900 MPa |
| Charpy Notched Impact 23 C | 3.5 kJ/m² |
| Melting Temperature Dsc | 178 °C |
| Heat Deflection Temperature 1 8 Mpa | 70 °C |
| Vicat Softening Temperature B50 | 145 °C |
| Water Absorption 24h | 0.2% |
| Volume Resistivity | 1E13 Ω·cm |
| Dielectric Strength | 25 kV/mm |
As an accredited LATI Latamid 12 H FE90 PA 12, Heat Stabilized factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | LATI Latamid 12 H FE90 PA 12, heat-stabilized polyamide 12, supplied in sealed 25 kg bags. |
| Container Loading (20′ FCL) | Container Loading (20′ FCL): A 20-foot full container load of Lati Latamid 12 H FE90 PA 12 heat-stabilized polyamide, packed securely for transport. |
| Shipping | Ship LATI Latamid 12 H FE90 in sealed, moisture-proof packaging to prevent hydrolysis. Keep dry, away from excessive heat, direct sunlight, and humidity. Store in a cool, ventilated area. Handle with care to avoid damage, and follow standard hazardous material protocols if applicable. Ensure proper labeling for transport. |
| Storage | Store LATI Latamid 12 H FE90 PA 12 in its original, sealed packaging in a cool, dry, well-ventilated area away from direct sunlight, heat sources, and ignition sources. Keep containers tightly closed to prevent moisture absorption, which can degrade the material. Avoid extreme temperatures; recommended storage around room temperature. Properly stored, the product maintains its properties within its specified shelf life. |
| Shelf Life | For this heat-stabilized PA12, shelf life is two years in original sealed packaging, cool and dry. |
The extrusion of heat-stabilized PA12 for automotive air brake tubing requires residual moisture below 0.10 % before melt processing. Pre-drying at 80 °C for 4–8 h in a desiccant dryer with a dew point of -40 °C or lower prevents hydrolytic chain scission that reduces melt strength and produces microporosity at the inner wall. On a single-screw extruder with 30:1 L/D grooved feed section and barrier screw, the melt temperature is held at 210–240 °C; screw speed for tube outside diameters of 6–12 mm commonly ranges from 30–60 rpm. The formulation uses 100 parts Latamid 12 H FE90 as base resin, 1.0–2.5 phr PA12-based carbon black masterbatch for ultraviolet stabilization, 0.2–0.5 phr processing lubricant, and 0.1–0.3 phr metal deactivator when brass push-in fittings are part of the finished assembly. Carbon black addition must be adjusted within the 1.0–2.5 phr window because loadings below 1.0 phr fail to meet SAE J844 weathering resistance, while loadings above 2.5 phr increase melt viscosity and cause die-lip deposit formation on the mandrel tip. Downstream, vacuum calibration with water at 20–25 °C and a vacuum level of 0.02–0.08 MPa stabilizes outer diameter before haul-off. Finished tubing is tested for cold impact after conditioning at -40 °C and for burst performance according to ISO 7628-2:2011. End-product forms include straight air brake lines, coiled assemblies, and color-coded bundled lines for trailer installations. Compliance is maintained with SAE J844, ISO 7628-2:2011, and EU 2000/53/EC ELV requirements, while raw material documentation should be retained under REACH 1907/2006. Industrial failure modes on production lines typically involve moisture levels above 0.15 % creating internal voids that reduce burst pressure by 10–15 % in qualification testing.
In fuel vapor return line construction, Latamid 12 H FE90 is used as the outer structural layer in multilayer coextrusion or as a monolayer vapor line where fuel permeation limits allow. The layer formulation is 100 wt% heat-stabilized PA12 plus 0.5–2.0 wt% carbon black masterbatch and 0.2–0.5 wt% processing aid. Addition of a plasticizer is generally avoided because plasticizer migration into the fuel contact layer raises permeation and causes delamination after thermal cycling; if low-temperature flexibility must be increased, the modification is qualified against SAE J2260 permeation and SAE J1645 recirculation tests rather than added arbitrarily. Coextrusion lines use a 25:1–30:1 L/D single-screw extruder for the PA12 outer layer with melt temperatures between 220 °C and 245 °C; inner layers of ETFE, EVOH, or conductive PA are processed in separate extruders and combined in a spiral mandrel die. The downstream process includes vacuum calibration, post-forming corrugation if specified, and laser marking for part traceability. Terminal product types include fuel vapor return lines, clipped quick-connector bodies, filler-neck vent lines, and canister purge line segments. Regulatory documentation should include SAE J2260, SAE J1645, and ISO 13775-1 where applicable; the material must also comply with 2000/53/EC ELV restrictions for lead, cadmium, mercury, and hexavalent chromium. In practice, batch-to-batch viscosity variation above ±8 % of the reference melt flow index value produces visible diameter drift in the calibration tank; therefore melt flow index is measured at 235 °C/5 kg according to ISO 1133-1:2022 before line start.
Compressed air distribution in robotic cells and CNC machining centres imposes dimensional stability requirements that heat-stabilized PA12 meets without the moisture regain of PA6. The formulation is based on 100 wt% Latamid 12 H FE90 with 1.0–2.0 wt% conductive carbon black masterbatch to achieve surface resistivity below 10⁶ Ω for static dissipation, plus 0.2–0.5 wt% extrusion processing aid. Drying before extrusion at 80 °C to 0.08 % moisture is mandatory when ambient relative humidity exceeds 60 %; otherwise moisture-induced foaming appears as internal voids that reduce burst strength by 10–15 % in pressure cycling tests. The tubing is produced on a single-screw extruder with 25:1 L/D, low-compression barrier screw, melt temperature 210–235 °C, and a vacuum sizing tank with water at 18–25 °C. Online ultrasonic gauging after the haul-off records outer diameter tolerance against ISO 14743:2004; after 24 h conditioning at 23 °C/50 % RH, cut lengths are assembled with push-in fittings and tested for leakage at 1 MPa with dry air per ISO 8573-1:2010 class 2.4.2. Terminal products include flexible pneumatic harnesses for robotic cells, CNC machine air distribution lines, blowgun extensions, and control panel air supply tubes. Industrial compliance is anchored to ISO 14743:2004, ISO 8573-1:2010, and REACH 1907/2006.
The internal pressure sheath of an unbonded flexible pipe represents a demanding application for heat-stabilized PA12 because the polymer must withstand continuous hydrocarbon exposure, flexural fatigue, and rapid gas decompression without cracking. Replacement of PA11 with Latamid 12 H FE90 is considered only when the design temperature remains below 90 °C and when the fluid composition does not exceed 100 ppm hydrogen sulfide in the aqueous phase; published data for this specific configuration is limited, so qualification must include sour aging according to NORSOK M-710. The extrusion is performed as a continuous tubular inner sheath over the interlocked carcass using a high-viscosity variant; melt temperature is held at 210–230 °C, and residual moisture before extrusion must be below 0.08 % to prevent hydrolytic degradation during service. The formulation is 100 wt% heat-stabilized PA12; regrind is generally excluded from the inner sheath, and any plasticizer modification must remain within the qualified range established in API Spec 17J flexibility tests. Production occurs on a purpose-built flexible pipe line with a 30:1 L/D extruder, gravimetric dosing to ±0.5 %, and continuous ultrasonic thickness monitoring. Terminal products are unbonded flexible risers, flowlines, and jumpers for subsea hydrocarbon transfer. Compliance documentation is governed by API Spec 17J, API Spec 17K, and ISO 13628-2; pressure testing of the finished pipe is conducted according to API Spec 17J hydrostatic test requirements. The main operational boundary is that this grade should not be used in sour service above 100 ppm H₂S without additional qualification, and continuous exposure above 90 °C reduces permissible design life.
Because rail operators require cable sheathing with reduced smoke density and consistent low-temperature abrasion resistance, heat-stabilized PA12 is extruded as a thin-wall jacket over crosslinked polyethylene or elastomeric insulation in rolling-stock power and control cables. Latamid 12 H FE90 is used at 100 wt% with 0.5–1.5 wt% color masterbatch, 0.2–0.5 wt% processing aid, and 0.1–0.3 wt% anti-block additive to prevent spool blocking. A single-screw extruder with 20:1–25:1 L/D and a pressure die is operated at 210–230 °C; the screw is configured with a shallow metering zone to limit frictional heat buildup, because local melt temperatures above 250 °C initiate yellowing and reduce elongation at break by 5–10 % after aging. The downstream process involves a 60–80 °C water trough followed by air cooling, with capstan tension maintained below 0.1 % of conductor breaking load to prevent jacket necking. Finished cables are tested for flame propagation according to IEC 60332-1-2, smoke density according to IEC 61034-2, and halogen acid gas emission according to IEC 60754-2. Terminal product types include rail jumper cable sheathing, transit vehicle sensor cable jackets, and trackside control cable insulation. Compliance under EN 50264-1 and EN 50306-1 is required for the cable assembly rather than the compound alone; raw material documentation is maintained under REACH 1907/2006 and EU 2011/65/EU RoHS.
If a chemical transfer hose requires a liner with lower moisture regain than PA6 or PA66 and adequate resistance to aliphatic hydrocarbons and dilute alkalis, Latamid 12 H FE90 is processed as a smooth-bore inner liner or as an outer cover over an elastomeric carcass. The formulation is 100 wt% heat-stabilized PA12, with 0.5–1.5 wt% conductive carbon black masterbatch when surface resistivity below 10⁶ Ω is needed for solvent transfer, and 0.2–0.5 wt% processing aid. The liner is extruded using a 30:1 L/D single-screw extruder with vacuum venting, melt temperature 210–240 °C, and a coextrusion block where the outer flexible PVC/nitrile rubber or polyurethane cover is applied after adhesive tie-layer application. Pre-drying is set at 80 °C for 4–6 h to 0.10 % moisture; extrusion above 245 °C is avoided because thermal stabilizer depletion accelerates and inner surface roughness increases. Downstream process steps include spiral wrapping, vulcanization only in the elastomer cover phase, and final pressure testing at 1.5 MPa for 15 min according to EN 12115. Terminal products include solvent transfer hoses, paint spray lines, agricultural chemical hoses, and low-pressure fuel delivery hoses. Regulatory compliance for this application falls under EN 12115, ISO 10380, and REACH 1907/2006; halogen-free incineration requirements are documented under IEC 60754-2 when the finished hose is used in enclosed plants.
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LATI Latamid 12 H FE90 is a heat-stabilized polyamide 12 (PA12) compound supplied as pellets for injection molding and profile extrusion. The material is classified under the polyamide 12 designation of ISO 1043-1:2011. The base polymer is a semicrystalline aliphatic polyamide produced by ring-opening polycondensation of laurolactam; the repeat unit contains 12 carbon atoms per amide group, which reduces the density of interchain hydrogen bonds compared with PA6 or PA66. In published class-level data for unfilled PA12, the dry density is reported in the range 1.01–1.02 g/cm³ by ISO 1183-1:2019, the melting peak is near 175–180°C by ISO 11357-1/-3, and saturation moisture uptake is below 1.6% under ISO 62. The H suffix in the LATI nomenclature identifies a heat-stabilized series. The FE90 suffix is compound-specific; it is not an ISO designation, and no filler content, flame-retardant rating, impact modification, or exact mechanical value should be inferred from the suffix alone. The controlling document for product-specific values is the LATI technical datasheet.
The primary technical claim associated with Latamid 12 H FE90 is enhanced thermo-oxidative stability during melt processing and service. Heat-stabilized PA12 grades commonly contain copper-based stabilizer packages that decompose hydroperoxides and interrupt radical chain scission in the methylene sequences adjacent to amide linkages. The benefit is measured not as an increase in short-term tensile strength but as retention of elongation at break and impact energy after cumulative heat exposure. The accepted numerical index for such performance is the relative thermal index assigned under UL 746B. Published class-level RTI values for heat-stabilized PA12 generally fall between 85°C and 125°C depending on the property criterion, specimen thickness, and failure criterion. The specific RTI for Latamid 12 H FE90 must be obtained from the UL Yellow Card for the exact grade, not estimated from generic PA12 literature.
Moisture is the principal processing constraint. Although PA12 absorbs less water than PA6, it remains hygroscopic. At 23°C and 50% RH, unfilled PA12 reaches an equilibrium moisture content of approximately 0.5–0.8%, whereas PA6 under the same conditions approaches 2.5–3.0%. During melt conversion, free moisture above roughly 0.10% by mass hydrolyses the polymer chain at melt temperatures above 220°C, causing melt viscosity loss, surface splay, internal voids, and reduced ductility. Pellet moisture should therefore be measured by ISO 15512:2016 Method B or an equivalent calibrated Karl Fischer procedure before processing. Desiccant drying at 80–90°C for 4–8 h to a dryer dew point of −30°C or lower is typical for unfilled PA12; the exact profile for Latamid 12 H FE90 must be set from the LATI datasheet and verified on the production floor.
Extrusion of heat-stabilized PA12 is commonly run on a single-screw extruder with an L/D ratio of 24:1–30:1 and a barrier screw. Melt temperature measured at the die is usually held in the 220–245°C range. Production lines making PA12 tubing often keep the feed throat at 40–70°C to prevent premature pellet sticking, while the metering zone is maintained near the upper end of the melt range. Injection molding is typically performed with melt temperatures of 230–260°C, mold temperatures of 40–80°C, and holding pressures of 50–80 MPa. A three-zone screw with a compression ratio near 2.5:1–3.0:1 is conventional. Residence time above 250°C should be minimized; stagnant melt can produce yellowing, black specks, and molecular weight loss. Published data for this specific LATI configuration is limited, so start-up trials should verify melt volume-flow rate according to ISO 1133-1:2022 and confirm that the dried material remains below the 0.10% moisture target through the feed system.
One application boundary where heat-stabilized PA12 replaces PA6 or PA66 is automotive air-brake tubing and pneumatic-control line. The candidate application relies on low-temperature ductility, low moisture uptake, and resistance to zinc chloride stress cracking. PA6 and PA66 are more sensitive to zinc chloride stress cracking, while PA12 offers significantly lower equilibrium water absorption and therefore less humidity-driven dimensional shift. Qualification for air-brake tubing in the United States commonly follows SAE J844; European and other regional specifications may add further environmental resistance testing. Class-level PA12 data are not a substitute for product-specific compliance. Candidate applications for Latamid 12 H FE90 include pneumatic tubing, cable-protection conduit, fuel-vapor vent lines, and technical parts requiring low moisture uptake and low-temperature flexibility. Where food-contact or drinking-water approval is required, the finished compound must be certified against the applicable positive-list regulation, such as FDA 21 CFR 177.1500 for nylon resins or Commission Regulation (EU) No 10/2011. PA12 base-resin compliance does not automatically extend to the compounded product.
Chemical resistance should be validated by immersion testing according to ISO 175:2010. The PA12 class generally resists aliphatic hydrocarbons, mineral oils, greases, and dilute salt solutions. It is not immune to polar or acidic environments. Alcohols and glycols can plasticize PA12; hot aqueous acids can hydrolyse the amide linkage. Continuous service in hot water above 80°C or exposure to phosphate ester hydraulic fluids should be tested because environmental stress cracking can arise when internal stress, temperature, and chemical agent coincide. The heat-stabilization package is not a hydrolysis inhibitor; it addresses oxidative degradation rather than water attack.
Heat-stabilized PA12 is frequently selected for parts exposed to sub-zero temperatures. Class-level unfilled PA12 generally retains ductility at temperatures below −40°C, but the measured impact value depends on notch geometry, conditioning, and strain rate. Notched Charpy testing under ISO 179-1/1eA at −30°C is a standard comparator, with type A notch radius of 0.25 mm producing more severe conditions than a 1.0 mm notch. The glass transition of PA12 is reported near 40–50°C by dynamic mechanical analysis; below that temperature the amorphous phase stiffens, but the crystalline network can continue to carry load and resist brittle failure. For outdoor service, heat stabilization alone is not UV stabilization. Natural unfilled PA12 can embrittle after prolonged ultraviolet exposure. Carbon black at 2–3% by mass is a common weatherability strategy, but the final UV resistance must be confirmed with accelerated weathering such as ISO 4892-2. The presence and dispersion of carbon black in Latamid 12 H FE90 must be verified from the grade definition rather than assumed from the suffix.
Production-scale conversion of heat-stabilized PA12 is sensitive to stagnant melt zones. On injection molding machines with hot-runner manifolds, resin held above 250°C for more than 10 min can generate black specks and measurable loss of notched Charpy impact. Extruders with worn screw flights may exhibit melt-pressure variation exceeding ±5%; such variation is a processing fault signal rather than a material specification. Regrind handling must include adequate drying and a defined addition limit. Regrind levels above 25% by mass without validation are a common source of batch-to-batch variation in elongation and impact. Before shutdown, the machine should be purged with a thermally stable polyamide purge material, and start-up should discard flow-path stagnancy until melt pressure and visual clarity stabilize.
The comparative position of Latamid 12 H FE90 within the semicrystalline polyamide family is defined mainly by density, melting point, moisture uptake, and dry tensile modulus. In dry-as-molded unfilled stock, PA6 typically has a tensile modulus near 2.7–3.2 GPa, approximately twice the 1.3–1.6 GPa range reported for unfilled PA12. After moisture saturation, the modulus of PA6 falls substantially, while PA12 shifts less because its lower amide-group concentration absorbs less water. PA11 is the closest commercial comparison; PA11 has a slightly higher density near 1.03–1.04 g/cm³ and a melting peak near 185–190°C. Glass-filled PA12 grades can raise tensile modulus above 3 GPa at glass contents near 30%, but they reduce elongation at break and alter surface behavior. The following class-level values are screening data only and must not replace the LATI datasheet for design input.
| Property | Test method | Unfilled PA12 class range | Unfilled PA11 class range | Unfilled PA6 class range |
|---|---|---|---|---|
| Density | ISO 1183-1:2019 | 1.01–1.02 g/cm³ | 1.03–1.04 g/cm³ | 1.12–1.15 g/cm³ |
| Melting peak | ISO 11357-1/-3 | 175–180°C | 185–190°C | 220–225°C |
| Saturation moisture uptake | ISO 62 | 1.4–1.6% | 1.6–1.9% | 8–10% |
| Tensile modulus, dry | ISO 527-1/-2 | 1.3–1.6 GPa | 1.1–1.3 GPa | 2.7–3.2 GPa |
| Notched Charpy, 23°C | ISO 179-1/1eA | 4–8 kJ/m² | 5–10 kJ/m² | 4–8 kJ/m² |
These ranges are literature values for unfilled, dry-as-molded or conditioned specimens. They do not certify Latamid 12 H FE90 and should not be used for finite-element design input. The product datasheet is the only valid source for mechanical design values and processing limits.
The following compliance and test matrix summarizes the measurements relevant to incoming-material verification and application validation for Latamid 12 H FE90. The matrix does not establish product-specific acceptance limits; those must be taken from the LATI technical datasheet or the commercial specification.
| Measurement | Standard or regulation | Condition | Meaning for Latamid 12 H FE90 |
|---|---|---|---|
| Density | ISO 1183-1:2019 | 23°C | Class identity and filler-loading check |
| Melt volume-flow rate | ISO 1133-1:2022 | Datasheet temperature/load | Melt viscosity and process-control indicator |
| Moisture content | ISO 15512:2016 Method B | Before melt processing | Typical target ≤0.10% |
| Tensile properties | ISO 527-1/-2 | 23°C, 50 mm/min | Mechanical design input after conditioning |
| Charpy impact | ISO 179-1/1eA | 23°C and −30°C | Low-temperature ranking and ductility check |
| Flammability | IEC 60695-11-10 | Thickness per UL Yellow Card | Not inferred from FE90 suffix |
| Relative thermal index | UL 746B | Electrical, mechanical with and without impact | Product-specific value required |
In material substitution work, Latamid 12 H FE90 is compared with heat-stabilized PA6 and PA66 when the incumbent fails by zinc chloride stress cracking, excessive moisture shift, or low-temperature brittleness. The cost position of PA12 is normally higher than that of PA6 or PA66; substitution therefore requires a defined failure mechanism that the lower-amide polymer resolves. Conversely, when dry tensile modulus and short-term heat-deflection temperature dominate the load case, unfilled PA6 or PA66 generally outperform unfilled PA12. If the FE90 grade contains an impact modifier, filler, or other functional additive, the comparison changes. The FE90 suffix must be decoded from the LATI technical sheet before a substitution analysis is valid. Material substitution based solely on class-level tables is not permitted under design-control procedures; the LATI datasheet and UL Yellow Card remain the controlling documents.
