| HS Code | 754200 |
| Density 23 C | 1.01 g/cm³ |
| Water Absorption 24h 23 C | 0.25% |
| Melting Point Dsc | 178 °C |
| Heat Deflection Temperature 1 8 Mpa | 55 °C |
| Vicat Softening Temperature B50 | 140 °C |
| Tensile Strength At Yield 23 C | 45 MPa |
| Elongation At Break | >200% |
| Flexural Modulus 23 C | 1300 MPa |
| Charpy Impact Strength 23 C Unnotched | 100 kJ/m² |
| Flammability Rating Ul94 | HB |
| Volume Resistivity | 1.0E12 ohm·cm |
| Dielectric Strength | 30 kV/mm |
As an accredited LATI Latamid 12 H 90FE03 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 90FE03 PA12 heat-stabilized granules supplied in 25 kg moisture-proof polyethylene bags, 1,000 kg pallets. |
| Container Loading (20′ FCL) | Container Loading (20′ FCL) for LATI Latamid 12 H 90FE03: palletized, securely braced, in clean, dry, ventilated container to prevent moisture and heat damage. |
| Shipping | LATI Latamid 12 H 90FE03 is a heat-stabilized polyamide 12 resin, supplied as dry pellets. Ship in sealed moisture-proof bags or drums to prevent humidity absorption. No hazardous goods classification; avoid excessive heat and store in a cool, dry area during transit. |
| Storage | Store LATI Latamid 12 H 90FE03 PA 12 in its original, unopened packaging in a cool, dry, well-ventilated area, away from direct sunlight, heat sources, and moisture. Keep containers tightly sealed to prevent humidity absorption, which can degrade performance. Avoid exposure to UV radiation and excessive temperatures. Use within shelf life under recommended conditions. |
| Shelf Life | Shelf life is typically 2 years from production date when stored unopened in a cool, dry place. |
Desiccant drying at 80°C for 4–6 h to a residual moisture content below 0.10% as measured by ISO 15512 is the first control step in converting LATI Latamid 12 H 90FE03 into SAE J844 air brake tubing for heavy-duty commercial vehicles. A single-screw extruder with a 30:1 L/D ratio and a barrier screw provides sufficient plastication at a barrel profile from 220°C in the feed section to 245°C at the metering section; melt temperature at the die is held between 235°C and 245°C. The heat-stabilized grade is run neat, with internal scrap regrind limited to 15 wt% and only if generated from unpigmented, moisture-controlled edge trim; carbon black masterbatch at 0.3–0.5 wt% is added when UV resistance is required for exposed chassis runs. A melt pump after the breaker plate reduces pressure oscillations and improves wall-thickness consistency; screen packs of 60/80/100 mesh are used for standard line speeds. Vacuum sizing and a closed-loop haul-off maintain outside diameter and wall thickness within the dimensional bands specified in ISO 7628; post-extrusion annealing at 120–140°C for 30 min is occasionally used to relax residual stress before burst testing. End-product qualification is based on room-temperature burst pressure, −40°C cold impact, and zinc chloride stress-crack resistance as referenced in SAE J844 and FMVSS 106. Production bottlenecks observed on continuous lines include melt-pressure drift caused by screen pack fouling and ovality from uneven cooling in the sizing tank when line speeds exceed 25 m/min for 8 mm outside diameter tubing. The heat stabilizer package increases oxidation induction time and retards carbonyl formation, but published data for this specific grade in SAE J844 long-term fleet testing is limited; therefore line qualification normally includes a 1,000 h air oven ageing at 125°C with elongation retention checked per ISO 527-2 on the extruded tube.
In coextruded automotive fuel-vapour recovery lines, LATI Latamid 12 H 90FE03 forms the outer structural layer because its heat-stabilized polyamide 12 matrix resists burst at 125°C and zinc chloride exposure better than polyolefin alternatives; the inner layer is typically a fluoropolymer such as ETFE, and the two are joined by a maleic anhydride graft tie resin. The layer distribution is controlled by gravimetric melt pumps and is constrained by the allowable melt-temperature window of the fluoropolymer, which is lower than the optimum die temperature of the PA12; die temperature is therefore set at 240–250°C, and residence time is limited to prevent ETFE thermal degradation. A practical outer-layer thickness for an 8 mm outside diameter tube ranges from 0.35 mm to 0.60 mm, while the barrier layer and tie layer together occupy 15–25% of the total wall thickness; reducing the ETFE layer below this band to save material compromises permeation resistance under the SAE J2260 test protocol, while increasing it degrades burst resistance because the outer PA12 load-bearing section becomes too thin. Coextrusion tooling requires a spiral mandrel die with separate melt channels and temperature isolation; melt-pressure transducers in each layer are needed to detect instabilities that cause interfacial waviness. End-product testing includes heat ageing at 125°C for 1,000 h, fuel soak in CE10 and CE85 at 40°C, and cold impact at −40°C. The heat-stabilized formulation slows thermo-oxidative chain scission in the outer layer, but published data for this specific grade in multi-layer fuel line configuration is limited; users typically verify elongation retention after ageing against their own OEM specification.
Push-to-connect pneumatic circuits in automated assembly lines and rail rolling stock braking controls use extruded PA12 tubing because the material’s low equilibrium moisture absorption of approximately 0.7% at 23°C and 50% RH per ISO 62 keeps dimensional change small when dew-point-controlled compressed air is introduced. LATI Latamid 12 H 90FE03 is dried to a residual moisture level near 0.08% before extrusion on a 25:1 single-screw line; barrel temperatures from 210°C to 240°C and a die temperature of 235°C are used for 4–12 mm outside diameter tubing. Internal scrap from dimensional rejects is reground at 10–20 wt% and blended with virgin pellets; higher regrind fractions raise the melt flow rate and reduce hoop stress retention, which is measured by burst testing at 23°C and 80°C. The extrudate is passed through a vacuum calibration sleeve and cut to length; push-to-connect fittings require a minimum ovality and a clean cut surface, so saw speed and blade condition are line variables monitored by in-line laser diameter gauges. Damp environments and residual oil aerosol in compressed air can act as stress-cracking agents; the heat-stabilized formulation has acceptable resistance to zinc chloride and sodium chloride at room temperature but is not recommended for continuous contact with strong acids or methanol-containing mixed solvents. Published data for this specific grade in high-humidity push-to-connect circuits is limited, but the base PA12 chemistry is widely used for industrial pneumatic tubing where ISO 14743 or producer-specific fitting compatibility tests apply.
| Downstream segment | Standard designation | Critical test condition | Typical requirement |
|---|---|---|---|
| Air brake tubing | SAE J844 | Burst pressure at 23°C and 80°C; cold impact at −40°C | No rupture below specified pressure; no crack after impact |
| Fuel vapour recovery line | SAE J2260 | Fuel soak in CE10/CE85 at 40°C; heat ageing at 125°C for 1,000 h | No visible cracking; retained burst strength |
| Underhood clip | ISO 527-2, ISO 179-1/1eA | Charpy impact at −40°C; tensile after 125°C ageing | Ductile failure; elongation retention per drawing |
| Industrial pneumatic tube | ISO 14743 | Burst pressure at 23°C; fit retention after humidity ageing | No leak; no pull-out below specified load |
Underbonnet wiring-harness clips and sensor bracket clips are moulded from LATI Latamid 12 H 90FE03 at a melt temperature of 245–260°C and a mould temperature of 50–80°C. A 3-zone reciprocating screw with a non-return valve and a 20:1 L/D ratio is typical; clamping force is calculated on the basis of 30–45 MPa cavity pressure and projected area. The heat-stabilized grade permits dry-as-moulded parts to retain lower internal stress than faster-crystallising PA66 grades, but hot-runner systems should avoid dead zones where residence time exceeds 10 min at melt temperature because thermo-oxidative discoloration can begin. Regrind from sprues and runners is reintroduced at up to 25 wt% after drying. Retention force after heat ageing at 125°C for 1,000 h depends on the stabilizer package and on part geometry; the hinge loop must be designed with a radius of at least 0.5 mm to avoid notch-sensitive fracture in cold-impact testing at −40°C. Dimensional control is verified by ISO 291 conditioning and ISO 527-2 tensile modulus measurements on plaques and by functional clip retention tests on the finished component. Published data for the specific moulded clip configuration is limited, so moulders commonly run design-of-experiment studies with gate location and hold pressure as factors.
For ski boot cuffs and heel counters, unfilled heat-stabilized PA12 is selected over PA6 because the lower density reduces component weight and the low-temperature impact behaviour remains ductile at −20°C to −30°C. Injection moulding uses a melt temperature of 235–250°C and a mould temperature of 40–60°C; the grade absorbs moisture slowly, so parts can be tested at 50% RH without significant dimensional distortion. Adhesion of solvent-based polyurethane paints and printing inks requires surface activation by corona or plasma; after treatment, surface energy is checked to exceed 40 mN/m. The moulded shell must meet ISO 5355 step-in/step-out load requirements when the PA12 component is part of a rigid alpine ski boot; however, LATI Latamid 12 H 90FE03 is usually used for non-structural tongue supports and trim components rather than the primary shell because unfilled heat-stabilized PA12 has lower flexural modulus than glass-filled nylon and may creep under continuous load at warm temperatures. Published data for this specific footgear configuration is limited, and cycle time targets require gate and cooling geometry to be optimised by mould-flow simulation rather than relying on generic PA12 processing tables.
In unbonded flexible pipe for offshore oil and gas production, PA12 heat-stabilized grades have been used as the polymeric pressure sheath in low-sour service because of their combination of flexibility, resistance to hydrocarbon permeation, and fatigue tolerance in dynamic riser configurations. Published data for LATI Latamid 12 H 90FE03 in this specific configuration is limited; qualification for hydrocarbon service requires testing to API 17J and API 17K, including tensile properties after ageing in simulated produced water at 60°C and depressurization testing to evaluate blistering from gas permeation. The polymer is extruded as a continuous sheath over an interlocked carcass and pressure armour; a 30:1 L/D extruder is used at melt temperatures 230–250°C, and the melt must be filtered to remove particles larger than 60 µm. The stabilizer package limits oxidative degradation at operational temperatures up to 60°C in wet hydrocarbon environments; however, elevated concentrations of H2S and carbon dioxide in produced fluids promote hydrolysis of the amide bond, so sour service requires special grades and validation. The end-product layer must withstand a specified hydrostatic test pressure defined by the pipe design; dimensional tolerance is evaluated by ultrasonic thickness scanning after extrusion. Field failure modes reported in unbonded pipe include blistering at the interface between the sheath and the underlying armour, which is why depressurization rate is controlled during service and during factory acceptance testing.
Competitive LATI Latamid 12 H 90FE03 PA 12, Heat Stabilized 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!
The compound designated LATI Latamid 12 H 90FE03 is a heat-stabilized polyamide 12 (PA 12) supplied for injection moulding and extrusion. The base polymer is prepared from laurolactam; the repeating unit contains a linear aliphatic sequence of 11 methylene groups between amide groups. This structure reduces equilibrium moisture uptake and density relative to PA 6 and PA 66. Unfilled PA 12 density is typically 1.01–1.03 g/cm³ by ISO 1183-1, and saturation water absorption is commonly 1.5–2.0% by ISO 62. The suffix H identifies the heat-stabilization package, which retards oxidative chain scission during melt processing and long-term thermal exposure. The 90FE03 block is a LATI formulation identifier; because the exact datasheet values for this formulation are not fully reproduced in the present text, design data should be obtained from the current LATI technical datasheet and, where required, from batch-specific certificates of analysis.
The heat-stabilized grade is a formulated modification of the base PA 12. The additive package influences melt viscosity retention during high-shear dispersion in twin-screw compounding and slows the decline in relative viscosity measured per ISO 307. Melt flow rate may be measured according to ISO 1133-1:2022; the exact MFR range for the 90FE03 formulation should be read from the producer’s datasheet because melt viscosity can be adjusted within the same family to suit thin-wall flow length or extrusion sag resistance. The compound is compatible with standard polyamide screw surfaces but is not interchangeable with PA 6 in terms of melt temperature settings.
Before injection moulding or extrusion, the compound should be dried to a residual moisture content below 0.10% by weight. A desiccant dryer set at 80 °C with a dew point at or below -30 °C is normally adequate for a residence time of 4–8 h, provided the granulate layer is not overfilled and return-air flow is unobstructed. Moisture levels are verified by ISO 15512 or a Karl Fischer apparatus calibrated for polyamides; visual inspection alone cannot determine the hydrolytic damage threshold. Recommended melt temperature for unfilled PA 12 is normally 230–250 °C, while mould temperature is held at 40–80 °C. For dimensionally stable parts with the highest crystallinity, the mould temperature should be maintained in the 60–80 °C band. Below 40 °C, rapid solidification reduces spherulite size but can produce anisotropic shrinkage and lower post-mould stability in semi-crystalline parts.
On a production floor converting from PA 66 to PA 12, the most frequent failure mode is applying the 260–290 °C barrel settings of PA 66 to a long-chain polyamide. That condition may exceed the upper melt temperature of PA 12 and can generate black specks, pressure instability near the torpedo, and a fall in notched Charpy energy after moulding. A more controlled transfer on a 25 mm general-purpose screw with L/D 20:1 uses reverse-profile zones: rear zone at 220 °C, centre zones at 235–245 °C, front zone at 245 °C, and nozzle at 240 °C; back pressure is kept at 0.5–1.0 MPa and screw speed is selected to avoid shear heating above 260 °C at the tip. The actual profile must be tuned because color concentrates and the 90FE03 additive package shift melt viscosity and residence-time tolerance.
The following ranges represent unfilled heat-stabilized PA 12 as a family. The values are not batch guarantees for LATI Latamid 12 H 90FE03; the LATI datasheet and its certificate of analysis remain the controlling references.
| Property | Test Method | Typical Range | Unit |
|---|---|---|---|
| Density | ISO 1183-1 | 1.01–1.03 | g/cm³ |
| Tensile modulus, 1 mm/min | ISO 527-1/-2 | 1400–1600 | MPa |
| Yield stress, 50 mm/min | ISO 527-1/-2 | 38–45 | MPa |
| Nominal strain at break | ISO 527-1/-2 | >50 | % |
| Charpy notched impact at 23 °C | ISO 179-1/1eA | 4–7 | kJ/m² |
| Melting peak temperature | ISO 11357-1/-3 | 176–181 | °C |
| Vicat softening temperature B50 | ISO 306 | 140–155 | °C |
| Water absorption, saturation, 23 °C | ISO 62 | 1.5–2.0 | % |
For load-bearing design, tensile modulus should be measured on dry-as-moulded specimens and again after moisture conditioning to 50% RH at 23 °C; PA 12 can lose measurable stiffness when equilibrated near 1.0–1.5% water. Snap-fit retention analysis should therefore use the conditioned modulus rather than the dry datasheet modulus. If the part is evaluated only at -40 °C, impact testing per ISO 179-1/1eA is more discriminating than at room temperature because long-chain polyamides become stiffer and may exhibit lower ductility at cold temperatures. The heat deflection temperature of unfilled PA 12 is lower than that of PA 66; typical HDT/A values under 1.80 MPa by ISO 75-1/-2 often lie near 50–55 °C. This is not a processing defect but a family limit.
Application validation for heat-stabilized PA 12 commonly includes pneumatic tubing and underhood retention devices. Tubing specifications such as SAE J844 for thermoplastic air brake tubing or DIN 73378 define burst-pressure retention after thermal aging; heat-stabilized formulations are assessed after aging at 100 °C or 125 °C depending on service class. Clips, cable ties, and snap-fit connectors are further conditioned at 23 °C and 50% RH and tested for notched Charpy impact according to ISO 179-1/1eA. The lower melting point of PA 12 means that ultrasonic welding or hot-plate welding parameters must be reduced relative to PA 66; a hot-plate set-point of 220–230 °C is a useful starting range, but weld strength must be confirmed on the production line because the heat-stabilizer package can alter melt-film formation. Weld factor is determined using ISO 527-1 tensile specimens and is reported as the ratio of welded to unwelded strength.
In extrusion lines, heat-stabilized PA 12 is processed on 24:1 to 30:1 single-screw machines with polyamide barrier screws or on 30:1 to 44:1 twin-screw machines for compounding. The melt temperature at the die is held between 235 °C and 250 °C, and the water bath is held at 20–40 °C for dimension control. Melt pressure variation below ±1.5% of set point is typically required to keep tube wall thickness variation within ±0.05 mm. Because PA 12 crystallizes quickly, post-extrusion annealing at 80 °C for 4 h can stabilize semi-crystalline dimensions before cutting. The heat-stabilizer package retards gel formation on the die lip, but periodic purge cycles are still required when runs exceed 24 h.
Long-chain polyamide 12 has fewer amide groups per unit mass than PA 6 or PA 66, which reduces moisture-driven attack by polar salts. In stress-cracking evaluations based on bent-strip methods from ISO 22088-2 or ISO 22088-3, PA 12 generally retains a higher fraction of initial failure stress after immersion in 50% aqueous zinc chloride at 23 °C than short-chain nylons. This is one reason the material is specified for connectors, cable glands, and mounting clips exposed to road de-icing chemicals. The test is not trivial to reproduce: surface cleanliness, molded-in stress, and colorant package all shift the time to cracking. Heat-stabilized grades are not automatically immune to stress cracking; the stabilizer package controls oxidative aging, while plasticization by water or salt solutions is governed by the amide concentration and morphology. Published data for the specific 90FE03 package under combined thermal aging and salt immersion are more limited, so qualification should include a design-specific stress-cracking matrix.
Dimensional stability in high humidity is a primary differentiator against PA 6. PA 6 absorbs roughly 9.5% water at saturation under ISO 62, whereas PA 12 remains near 1.5–2.0%. In extruded tubes, that lower uptake reduces the diameter and wall-thickness shift after damp storage, and it preserves burst retention in conditioned testing. Against PA 66, the dry tensile modulus of PA 12 is lower: unfilled PA 66 may show a modulus near 2800–3200 MPa under ISO 527-1/-2, while PA 12 is typically in the 1400–1600 MPa range. Therefore, direct replacement in a structural bracket without ribbing or part geometry changes will reduce stiffness. The lower melt peak of PA 12, near 176–181 °C versus 260 °C for PA 66, also limits service in hot-oil environments.
Heat-stabilized polyamide 12 is protected against oxidative degradation during processing and against short-term or intermittent thermal aging, but the polymer retains the low glass transition temperature and limited heat deflection temperature of the PA 12 backbone. The glass transition measured by DMA per ISO 6721-1 typically falls near 40–50 °C; this low transition explains the mechanical damping and flexibility at room temperature. Under continuous load at elevated temperature, unreinforced PA 12 exhibits creep even below 100 °C; tensile creep tests per ISO 899-1 are required to generate design curves. In underhood brackets where PA 66 glass-filled grades are commonly used at 150 °C and above, heat-stabilized PA 12 without glass reinforcement is not a direct substitute. Hot-air aging at 150 °C may be used to screen stabilizer packages, but the part’s actual use limit depends on oxygen access, section thickness, and retained stress.
Chemical resistance of PA 12 is broad but not universal. Long-chain polyamides resist hydrocarbons, fuels, mineral oils, greases, aliphatic solvents, and most salt solutions; immersion testing under ISO 175 at 70 °C or 100 °C is used to generate weight and dimension changes. Strong acids, certain phenolic compounds, and some chlorinated solvents can dissolve or swell the polymer. The heat-stabilizer package does not necessarily improve chemical resistance; it may be depleted by prolonged contact with hot aggressive media. Fuel-line formulations require extraction and aging testing under the specific fuel blend, because ethanol and biodiesel accelerate plasticizer extraction or stabilizer consumption. Published data for this exact 90FE03 grade in all fuel blends may be limited; OEM approvals are usually material/part-specific.
In injection moulding production, heat-stabilized PA 12 can tolerate regrind incorporation only if the regrind is dry and free of oil or dust contamination. A regrind fraction of 20% by weight is a common starting point; retention of tensile strength and impact energy should be verified after 3 remoulding cycles according to ISO 527-1/-2 and ISO 179-1/1eA. At regrind fractions above 30%, molding defects such as flow lines, silver streaking, or loss of weld strength may appear before mechanical property failure is detected in standard specimens. The stabilizer package influences the number of heat histories before the melt flow rate drifts beyond the accepted specification limit; that limit is defined by the producer’s MFR certificate, not by visual inspection alone.
