| HS Code | 255548 |
| Density | 1.01 g/cm³ |
| Melting Point | 178 °C |
| Glass Transition Temperature | 37 °C |
| Tensile Strength | 50 MPa |
| Elongation At Break | 250% |
| Flexural Modulus | 1100 MPa |
| Notched Charpy Impact Strength | 5 kJ/m² |
| Shore D Hardness | 70 |
| Water Absorption 24h | 0.25% |
| Thermal Conductivity | 0.23 W/(m·K) |
| Volume Resistivity | 1e14 Ω·cm |
| Dielectric Strength | 30 kV/mm |
| Chemical Resistance | Resistant to oils, greases, aliphatic hydrocarbons and alkalis |
As an accredited Hippe PA 12 Nylon 12 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | 25 kg net in moisture-proof polyethylene-lined kraft bags, sealed to protect Nylon 12 pellets from contamination and moisture. |
| Container Loading (20′ FCL) | 20′ FCL: Hippe PA 12 Nylon 12 loaded in 25kg bags on pallets, secured, container clean/dry, moisture-protected. |
| Shipping | Hippe PA 12 Nylon 12 ships as non-hazardous polymer pellets in sealed moisture-proof bags or drums. Store in a cool, dry area away from ignition sources. Avoid dust accumulation; use grounded equipment during transfer. Standard industrial packaging prevents contamination and protects material properties during transit. |
| Storage | Store Hippe PA 12 Nylon 12 in a cool, dry, well-ventilated area, away from direct sunlight, heat sources, and open flames. Keep containers tightly sealed to prevent moisture absorption and contamination. Avoid dust accumulation and static discharge. Store separately from strong oxidizers. Use within recommended shelf life, typically one year. |
| Shelf Life | Hippe PA 12 Nylon 12 has a shelf life of about 2 years when stored sealed, dry, and cool. |
A production-scale coextrusion line running Hippe PA12 outer jackets for evaporative fuel and vapor return lines encounters melt instability when residual moisture at the screw inlet exceeds 0.10 wt%. Pre-drying is executed at 80–90 °C for 4–6 h in a desiccant dryer with a dew point no higher than -40 °C, and melt pressure is held below 150 bar through a gear pump to avoid shear-induced gel specks. The outer layer formulation combines 100 parts virgin high-viscosity PA12 with 2.0–2.5 wt% carbon black masterbatch, 0.3–0.7 wt% hindered phenol/phosphate stabilizer masterbatch, and 0–5 phr plasticizer when -40 °C cold impact is required. Primary compliance is demonstrated through SAE J2260 for nonmetallic fuel system tubing and SAE J2044 for quick connector material compatibility, with tensile verification according to ISO 527-1:2019 and melt flow rate monitored under ISO 1133-1:2022. Downstream coextrusion uses 30–45 mm single-screw extruders with 25:1–30:1 L/D ratios, barrier screws, a melt pump, and a crosshead die maintained at 235–250 °C; vacuum sizing water is kept at 20–40 °C and line speed is set between 15 m/min and 60 m/min. Molded quick connectors from the same resin family are injected at 40–80 °C mold temperature and 400–800 bar packing pressure. Terminal components include multilayer fuel filler necks, vapor return lines, thermal expansion valve connectors, and fuel rail connector bodies.
On heavy-duty truck production lines, SAE J844-compliant PA12 air brake tubing is extruded from a formulation of 100 wt% medium-viscosity PA12, 1.8–2.2 wt% carbon black masterbatch, 0.2–0.5 wt% UV absorber masterbatch, and 0–8 wt% plasticizer when ambient service temperatures fall below -30 °C. The standard demands both burst strength after heat aging and room-temperature retention of dimensions after exposure to air-brake fluids; batch release testing therefore uses ISO 527-2:2012 tensile yield and ISO 179-1:2010 Charpy notched impact specimens cut longitudinally from extruded tube. Extrusion is performed on 24:1–30:1 L/D single-screw machines with 30–60 mm barrel diameters, a grooved feed section, vacuum sizing at -0.4 bar to -0.8 bar, and a melt window of 225–245 °C. Tube outside diameters range from 6.35 mm to 15.88 mm with wall thickness of 1.0–1.6 mm; laser gauging feedback maintains ovality below 0.08 mm at line speeds of 30–80 m/min. Production-scale failure modes observed on coil lines include outer-surface scoring when accumulated wax from sizing plates is not purged during shift changes and longitudinal weld line splitting when the die land aperture exceeds 0.8 mm. Final product forms include truck and trailer primary air brake tubes, coiled red and yellow control lines, and suspension leveling lines.
Because Hippe PA12 retains dimensional stability in wet hydrocarbon environments, extruded internal pressure sheaths for unbonded flexible risers are manufactured from high-viscosity plasticized grades on long-barrier single-screw lines. The material is pre-dried at 90 °C for 6–8 h to below 0.08 wt% moisture, then metered through a 60–200 mm single-screw extruder with 30:1 L/D, a grooved feed section, and screen packs configured for 150–250 µm filtration. Melt temperature is held between 220 °C and 245 °C, while die temperature is lowered to 200–230 °C to raise melt strength for large-diameter tube formation. The liner formulation combines 100 parts high-viscosity PA12, 0.5–1.0 wt% antioxidant masterbatch, and 6–12 wt% plasticizer according to published trade literature for low-temperature subsea service; for exact batch ratios, published data for this specific configuration is limited and should be verified against API qualification coupons. Compliance is assessed under API 17J and ISO 13628-2 for unbonded flexible pipe, including long-term hydrostatic creep and depressurization resistance. Downstream, extruded liner sections are processed through vacuum calibration and staged water cooling to minimize retained stress before they are helically wrapped with steel carcass and pressure armor. Terminal product forms include riser internal pressure sheaths, flowline liners, and jumper liners for deepwater oil and gas production temperatures up to 60 °C.
| Application | Pre-drying | Melt window | Primary standard |
|---|---|---|---|
| Automotive multilayer fuel lines | 80–90 °C / 4–6 h | 235–250 °C | SAE J2260 |
| Air brake tubing | 80 °C / 4 h | 225–245 °C | SAE J844 |
| Offshore liner | 90 °C / 6–8 h | 220–245 °C | API 17J |
| Medical catheter shaft | 80 °C / 4–6 h | 190–225 °C | ISO 10993-1 |
| SLS powder bed | 80 °C / 6 h | 169–175 °C | ISO 1183-1 |
| Cable jacket | 80 °C / 4–6 h | 210–235 °C | ISO 6722 |
In thin-wall medical extrusion, substitution of Hippe PA12 for PA11 alters draw-down behavior because the melt strength of PA12 supports a 2:1–4:1 draw-down ratio without lumen collapse at wall thicknesses below 0.13 mm. The formulation is compounded with 10–20 wt% barium sulfate radiopacifier, 0.5–1.0 wt% titanium dioxide light barrier, and 0.2 wt% fluoropolymer-free processing aid, with all ingredients pre-dried at 80 °C for 4–6 h to below 0.08 wt% moisture. Biological evaluation follows ISO 10993-1:2018, ISO 10993-5:2009 for cytotoxicity, and ISO 10993-10:2021 for irritation and sensitization; USP Class VI certification is maintained when no regrind is introduced into the cleanroom extrusion line. Processing employs a 20–25 mm single-screw microextruder with 24:1 L/D, a gear melt pump, and a crosshead die gap of 0.6–1.0 mm; barrel temperatures are profiled from 190 °C at the feed zone to 225 °C at the head, and cooling water is held at 10–20 °C. Avoidance of amine-based colorants is mandatory because PA12 undergoes chain scission at elevated processing temperatures in the presence of primary amines, which raises melt index and causes intermittent lumen fill variation. Final product types include neurovascular microcatheter shaft segments, introducer sheath outer jackets, and guiding catheter body stock.
Selective laser sintering powder beds place thermal and oxidative history above all other material variables. Hippe PA12 powder with a D50 of 45–60 µm is conditioned at 80 °C for 6 h in dry air and processed at a layer thickness of 0.100–0.150 mm with a build chamber temperature of 169–175 °C. Laser power is set to 30–60 W, scan speed to 4–12 m/s, and the beam offset is held at 0.15–0.25 mm to avoid over-melting at part boundaries. Powder refresh ratios are maintained at 40–60 wt% virgin material blended with recovered powder, because powder-bed aging above 48 h at elevated chamber temperature increases molecular weight and produces surface porosity on tensile bars. Mechanical verification of each build lot uses ISO 1183-1:2019 for density, ISO 527-2:2012 for tensile modulus and elongation at break, and ASTM D638 Type IV specimens extracted from the build chamber; particle size distribution is checked under ISO 13320-1:2020. For dimensionally stable glass-filled components, 15–30 wt% glass bead filler is mechanically blended with the PA12 powder, which reduces warpage at the cost of lower interlaminar fracture resistance. Final product types include automotive air intake ducts, electronics housing brackets, complex jigs and fixtures, and patient-specific orthotic shells with a published biocompatibility evaluation limited to non-implantable applications.
For automotive sensor cable jackets exposed to road salt and repeated flexing at -40 °C, Hippe PA12 is extruded as a thin-wall jacket over stranded copper or copper-clad steel conductors. The jacket formulation contains 1.5–2.0 wt% carbon black masterbatch, 0.2 wt% processing aid, and 0–4 wt% plasticizer when flexural modulus below 800 MPa is specified at low temperature. Compliance is tested according to ISO 6722 for road vehicle cables, UL 94 HB for flammability classification, and IEC 60332-1 for resistance to vertical flame propagation. Cable extrusion runs on 25:1–30:1 L/D single-screw machines with 30–50 mm barrel diameters, a 210–235 °C melt profile, and conductor preheat at 80–100 °C to improve jacket adhesion. Cooling trough temperatures are held at 20–30 °C and line speed is set between 50 m/min and 200 m/min depending on jacket wall thickness from 0.15 mm to 0.40 mm. Operational boundaries include a continuous service ceiling of 120 °C and exclusion from prolonged contact with concentrated zinc chloride road salt above 60 °C, where stress cracking has been observed on unplasticized grades. Terminal product types include ABS wheel-speed sensor cable jackets, industrial robot flex cables, and railway jumper cable sheaths.
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Hippe PA 12 Nylon 12 is an unfilled, semicrystalline polyamide 12 resin based on laurolactam polymerization. The product is supplied as cylindrical pellets for injection molding and profile or tube extrusion. If multiple viscosity classes are offered, they are commonly distinguished by melt volume-flow rate and stabilization package rather than by base chemistry. The resin has a typical density of 1.01 g/cm³ under ISO 1183-1:2019 and a melting range of 175–180 °C under ISO 11357-3. These are typical values for unmodified polyamide 12; the specific Hippe PA 12 Nylon 12 certificate of analysis governs lot-release properties.
Molecular architecture controls the performance differences. Each repeat unit contains twelve carbon atoms between amide linkages, against six in PA6 and PA66. The lower amide density reduces hydrogen bonding, lowers glass transition to 40–50 °C, and limits equilibrium moisture uptake. Dry unfilled PA12 typically exhibits tensile elongation at break above 200 % by ISO 527-2:2012, while dry PA6 and PA66 are often in the range of 20–40 %. The material is therefore used where snap-fit assembly, living hinges, or tubing bending fatigue must survive repeated strain without cracking. These statements are based on publicly available polyamide 12 data; published data for the specific Hippe PA 12 Nylon 12 configuration in all end-use environments is limited and must be confirmed by finished-part testing.
If the product is supplied as a powder for selective laser sintering, powder-specific handling is different. Powder-bed fusion grades typically target 20–80 µm median particle size and 30–50 % fresh-powder refresh rates; published data for the specific Hippe PA 12 Nylon 12 powder configuration is limited, and recoating behavior must be evaluated on the target machine.
| Property | Test method | Hippe PA 12 Nylon 12 typical unfilled | PA6 dry | PA66 dry |
|---|---|---|---|---|
| Density | ISO 1183-1:2019 | 1.01 g/cm³ | 1.14 g/cm³ | 1.14 g/cm³ |
| Equilibrium moisture at 23 °C, 50 % RH | ISO 62:2008 | 0.7–0.8 % | 2.6–3.0 % | 2.3–2.8 % |
| Water absorption at saturation, 23 °C | ISO 62:2008 | 1.2–1.5 % | 9.5–10.0 % | 8.0–9.0 % |
| Tensile modulus, dry | ISO 527-2:2012 | 1400–1600 MPa | 3000–3400 MPa | 3000–3500 MPa |
| Tensile stress at yield, dry | ISO 527-2:2012 | 38–48 MPa | 75–85 MPa | 80–90 MPa |
| Melting temperature | ISO 11357-3 | 175–180 °C | 220 °C | 260 °C |
Table values are typical published ranges for dry, unfilled resins and are not a Hippe lot-specific datasheet. Tensile data may also be generated under ASTM D638-14; results are not directly comparable to ISO 527-2:2012.
Consequences of lower amide density appear most clearly after moisture conditioning. Absorbed water plasticizes the amorphous phase. Because PA12 equilibrates at 0.7–0.8 % moisture at 23 °C/50 % RH compared with 2.6–3.0 % for PA6, the modulus reduction is smaller. A PA6 part may lose 40–50 % of initial flexural modulus after saturation, while unmodified PA12 retains a larger fraction of dry stiffness. Linear dimensional change in injection-molded plaques at 23 °C/50 % RH is often below 0.2–0.3 % for PA12 and 0.6–0.8 % for PA6. For precision clearance parts, this difference is decisive.
Water ingress follows Fickian diffusion in thin sections. Published diffusion coefficients for water in PA12 at 23 °C are on the order of 1–3 × 10⁻¹³ m²/s, lower than values typical for PA6. A 2 mm plaque therefore reaches half-saturation only after weeks, but the surface layer swells first and can generate transient stress. Post-mold annealing at 120–130 °C for 1–2 h under nitrogen reduces internal stress and stabilizes subsequent moisture-driven movement.
Predrying is mandatory when pellet surface has been exposed to ambient relative humidity above 60 % for more than 4 h. A desiccant dryer with a dew point of −30 °C or lower and a residence time of 4–6 h at 80–90 °C is typical. Drying above 100 °C may soften pellets and cause hopper bridging. The melt temperature is controlled between 210 °C and 250 °C for unfilled grades; extrusion of thick-wall profiles uses the lower end, while fast injection molding uses the upper end. Mold temperature is normally 40–60 °C. Below 30 °C, rapid cooling freezes a low-crystallinity skin and increases post-molding shrinkage variability. Above 80 °C, cycle time rises and ejection may become problematic.
Melt rheology at 100 s⁻¹ and 235 °C is typically 150–300 Pa·s. The flow activation energy is approximately 40–50 kJ/mol; a 10 °C melt-temperature change therefore alters viscosity by roughly 10–15 %. Hot-runner manifold setpoint errors of 5 °C can create visible cavity-to-cavity fill imbalance. Reciprocating-screw machines should use a compression ratio of 2.5:1–3.0:1 for unfilled PA12, with back pressure below 10 bar to limit shear heating. Residence time at melt temperature should not exceed 10 min; beyond this, thermo-oxidative degradation causes yellowing and notched impact loss. Melt volume-flow rate under ISO 1133-1:2022 at 235 °C with 2.16 kg load is typically 10–25 cm³/10 min; values below 8 cm³/10 min are generally unsuitable for thin-wall tubing extrusion without melt-pressure spikes above 200 bar.
On injection molding lines, unfilled Hippe PA 12 Nylon 12 requires clamp force based on projected area and cavity pressure. Cavity pressure at freeze-off typically averages 300–500 bar; thin-wall connectors with flow-length-to-wall-thickness ratios above 150:1 may require 700 bar or more. A general-purpose hydraulic press with 1500 kN clamp force can mold a multi-cavity tool with projected area around 300–500 cm² under the lower pressure range. Switch-over is often set near 95 % of total shot volume to avoid overpacking. Incoming resin should be checked for melt volume-flow rate and dry-as-molded tensile properties according to ISO 527-2:2012, because batch-to-batch variation in melt viscosity is more common than variation in melting point.
Glass-fiber-reinforced compounds based on Hippe PA 12 Nylon 12 are produced on a twin-screw extruder with 40:1 L/D and side feeding of glass fiber at 40–50 wt%. Melt temperature for glass-filled grades is maintained at 240–260 °C, and screw torque increases by 60–80 % relative to the unfilled base. Notched Charpy impact may decline when glass content exceeds 30 wt% due to fiber-end stress concentration, while tensile modulus can exceed 5000 MPa under ISO 527-2:2012.
Typical unfilled PA12 mold shrinkage is 0.8–1.4 % in the flow direction and 1.0–1.6 % transverse, depending on wall thickness and mold temperature. A 1 % moisture uptake can increase linear dimensions by 0.1–0.2 %. Differential shrinkage between the oriented skin and the slower-cooled core causes warp; mold temperature uniformity within ±5 °C across the cavity is necessary to keep shrinkage variation below 0.1 %.
For pneumatic tubing, cable sheathing, and automotive fluid lines, Hippe PA 12 Nylon 12 is selected over PA6 and PA66 when dimensions and flexibility must survive humidity cycles and low-temperature impact. The coefficient of linear thermal expansion for unfilled PA12 is typically 100–130 × 10⁻⁶ K⁻¹ by ISO 11359-2, near PA11 and higher than PBT. Dry glass transition lies below 0 °C, whereas PA6 dry glass transition is near 50–60 °C; this gives PA12 better impact retention at −40 °C. In tube form, burst pressure at 23 °C and 100 °C is certified under DIN 73378 or SAE J844. Typical working pressures for unreinforced PA12 tubing are 10–20 bar at 23 °C, but exact pressure ratings depend on diameter and wall thickness and must be certified on finished tube.
Compared with PA11, PA12 has similar moisture uptake and density, but PA11 is derived from castor oil while PA12 is traditionally petroleum-based. The melting point of PA12 is 10–15 °C lower than PA11, giving a slightly lower processing temperature. Compared with PBT, PA12 has lower modulus and higher elongation at break, reducing notch sensitivity but increasing creep under continuous load. For fuel-contact service, finished assemblies may be evaluated under SAE J2260; published data for the specific Hippe PA 12 Nylon 12 in long-term fuel exposure is limited and must be generated on the finished tube assembly, not the raw resin.
| Standard or regulation | Assessment condition | Typical status for unfilled PA12 grades |
|---|---|---|
| ISO 1183-1:2019 | Density at 23 °C | 1.01 g/cm³ |
| ISO 527-2:2012 | Tensile modulus, dry | 1400–1600 MPa |
| ISO 1133-1:2022 | Melt volume-flow rate, 235 °C, 2.16 kg | 10–25 cm³/10 min |
| DIN 73378 | Polyamide tubing for automotive compressed air systems | Grade-dependent; finished tube certification required |
| SAE J844 | Air brake tubing | Grade-dependent; finished tube certification required |
| FDA 21 CFR 177.1500 | Nylon resin for food contact, if specified | Only for compliant food-contact grades |
| EU 10/2011 | Plastic food contact migration | Grade-specific overall migration limit |
| RoHS 2011/65/EU | Pb, Hg, Cd, Cr(VI), PBB, PBDE | Typically conforms in unfilled natural grades |
This checklist is not a Hippe lot-specific certification; it identifies typical test methods used in industrial specifications.
Continuous contact with hot water above 80 °C reduces molecular weight through hydrolysis; the rate increases below pH 3 and above pH 9. Strong oxidizing acids, phenols, and chlorinated solvents at elevated temperature should be avoided. PA12 is susceptible to environmental stress cracking in concentrated zinc chloride solution, which is relevant for underhood components exposed to winter road salt. Free-acid flame-retardant masterbatches or amine-based additives that cause uncontrolled viscosity shifts should not be used without compounding validation. For outdoor use, natural unfilled PA12 without carbon black or hindered amine stabilizers embrittles under UV exposure; UV-stabilized black grades are recommended. Electrical insulation retention in humid environments is better than PA6; volume resistivity is typically 10¹²–10¹³ Ω·cm by IEC 62631-3-1, but natural unfilled PA12 has a UL 94 classification of HB and is not inherently flame retardant. Medical tubing requires ISO 10993-1 biocompatibility evaluation and characterization of sterilization compatibility on the finished device.
