1.  PA612 158L Grade Basic Description
a.Base resin: PA612 (long carbon chain low-moisture-absorption nylon)
b.158: Medium-viscosity base PA612 resin
c.L: Built-in general-purpose lubricant formulation for improved demolding, wear resistance and flowability
d.NC010: Natural unpigmented pellets, free of carbon black and colorants
2. Core Physical Properties (ISO Standard, Dry / 50% RH Conditioned)
Basic Physical Properties

Item	Value	Test Standard
Density	1.06 g/cm³	ISO 1183
Equilibrium water absorption at 50%RH (2mm specimen)	2.6%	ISO 62
Saturated water absorption	8.5%	ISO 62
Molding shrinkage	0.8~1.2%	Manufacturer Standard
Melting Point Tm	218~224℃	ISO 11357

Mechanical Properties

Property	Dry State	Conditioned at Equilibrium Humidity	Test Standard
Tensile Modulus	2350 MPa	1680 MPa	ISO 527-2
Tensile Yield Strength	61 MPa	53 MPa	ISO 527-2
Yield Elongation	4.3%	17%	ISO 527-2
Charpy Notched Impact Strength (23℃)	3.4 kJ/m²	3.9 kJ/m²	ISO 179/1eA
Flexural Modulus	2150 MPa	1460 MPa	ISO 178

Thermal Properties
a.HDT at 0.45 MPa: 218℃
b.HDT at 1.82 MPa: 210℃
c.Recommended melt processing temperature range: 230~290℃, optimum at 250℃
d.Mold temperature: 50~90℃, constant 70℃ is recommended
3.  PA612 158L Key Grade Characteristics
1.Medium viscosity with internal lubricationBalances mold filling and mechanical strength; self-lubricating and wear-resistant, ideal for slides, gears and bushings with smooth movement and low mold sticking risk; no extra external mold release agent required.
2.Low water absorption & excellent dimensional stabilityMuch lower moisture uptake than PA6 and PA66, resulting in minimal dimensional fluctuation under humid conditions, suitable for precision small mechanical components.
3.Broad chemical resistanceResistant to engine oil, grease, alcohol, weak acids & alkalis, and general cleaning agents; applicable to automotive fuel and hydraulic small parts.
4.Dual processing compatibilityCapable of injection molding various structural parts, as well as extrusion for tubes, rods, monofilaments and cable coatings.
5.No dedicated medical complianceOnly basic FDA food contact certification available; without ISO 10993, USP Class VI biocompatibility certifications, not allowed for implantable devices or medical instruments requiring repeated sterilization.
4.  PA612 158L Standard Injection Molding Processing Guidelines
1.Drying: Dehumidified hot air drying at 80℃ for 2~4 hours; optimal moisture content ≤0.1%, maximum acceptable 0.15% to avoid silver streaks and hydrolysis embrittlement.
2.Barrel temperature profile: 235~255℃, nozzle temperature +5~10℃ higher.
3.Constant mold temperature at 70℃ to enhance surface gloss and uniform crystallization.
4.Screw residence time: 3~5 minutes ideal; never exceed 10 minutes to prevent thermal degradation and discoloration.
5.Molding parameters: Medium-high injection speed for filling, moderate holding pressure to reduce internal stress and warpage.
5. PA612 158L Typical Applications (Industrial & Automotive Focus)
1.Automotive: Fuel line connectors, tubing liners, gears, sliding latches for door & window, oil pump components
2.General machinery: Wear-resistant slides, small gears, bearing bushings, precision valve seats, pneumatic parts
3.Extruded products: PA612 tubing, rods, fine filaments, cable coatings
4.General food-contact small parts (non-sterilization ambient-use only)
5.Sanitary ware, cosmetic pump bodies and sliding structures (ambient use only, not for repeated high-temperature disinfection)