{"id":2437,"date":"2026-05-29T15:24:58","date_gmt":"2026-05-29T07:24:58","guid":{"rendered":"https:\/\/www.jcinjectionmolding.com\/?p=2437"},"modified":"2026-06-29T11:07:52","modified_gmt":"2026-06-29T03:07:52","slug":"pa-dupont-zytel-70g33l","status":"publish","type":"material_model","link":"https:\/\/www.jcinjectionmolding.com\/it\/materials\/polyamide-pa-nylon\/pa-dupont-zytel-70g33l\/","title":{"rendered":"PA-DuPont Zytel 70G33L"},"content":{"rendered":"
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Zytel 70G33L Structural Mechanics & Thermal Limits<\/h2>\n

Zytel\u00ae 70G33L NC010 is a 33% glass fiber reinforced, heat-stabilized polyamide 66 resin. Because polyamides absorb moisture, our tool designs and structural simulations account for both Dry-As-Molded (DAM) and Conditioned states:<\/p>\n\n\n\n\n\n\n\n
Propriet\u00e0 ingegneristica<\/th>\nValore a secco (DAM)<\/th>\nConditioned (50% RH) Value<\/th>\n<\/tr>\n<\/thead>\n
Modulo a trazione<\/td>\n11,000 MPa<\/td>\n7,500 MPa<\/td>\n<\/tr>\n
Sforzo di trazione a rottura<\/td>\n200 MPa<\/td>\n135 MPa<\/td>\n<\/tr>\n
Distorsione al Calore (HDT)<\/td>\n250 \u00b0C (@ 1,80 MPa)<\/td>\n250 \u00b0C (Unchanged thermal limit)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n

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Industrial Structural Molding Applications & Processing Targets<\/h2>\n

With its high mechanical stiffness and heat-stabilized package, Zytel 70G33L substitutes die-cast alloys across severe load-bearing scenarios:<\/p>\n\n\n\n\n\n\n
Target Application<\/th>\nCriteri di esecuzione del processo<\/th>\n<\/tr>\n<\/thead>\n
Automotive Under-the-Hood Structural Components<\/td>\nDesigned for structural engine mounts, air intake manifolds, cylinder head covers, and heavy-duty radiator brackets requiring high continuous fatigue life.<\/td>\n<\/tr>\n
Electric Power Tools & Heavy Gear<\/td>\nIdeal for drop-resistant circular saw frames, drill housings, heavy-duty industrial bobbins, and transmission gear assemblies.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n

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Zytel 70G33L Tooling Design & Fiber Orientation Guide<\/h2>\n

Molding a highly structural 33% glass-fiber reinforced Nylon 66 demands rigorous parameter profiling. We address its abrasive nature, anisotropic shrinkage, and visual fibers through targeted tooling solutions:<\/p>\n

Abrasive Cavity Wear Control:<\/strong> Rigid glass fibers act as a grinding agent under high injection speeds, eroding standard steel gates rapidly. Jucheng\u2019s tooling division resolves this by fabricating molds with high-hardness tool steels (H13 or S136) heat-treated to 52\u201354 HRC, combined with specialized PVD wear-resistant coatings to ensure mold longevity and sharp parting-line shut-offs.<\/p>\n

Eliminating Floating Fibers (Cosmetic Float):<\/strong> Cold mold temperatures freeze the nylon matrix too rapidly, causing glass fibers to rise to the skin layer (yielding a rough, whitish surface). We use high mold temperatures (100\u00b0C\u2013120\u00b0C \/ 212\u00b0F\u2013248\u00b0F) managed by pressurized water controllers to keep the skin layer resinous, glossy, and visually flawless.<\/p>\n

Compensating for Anisotropic Shrinkage:<\/strong> Zytel 70G33L shrinks exceptionally low along the flow path (0.50%) but significantly higher perpendicular to the flow (1.10%). Our engineering team conducts rigorous Moldflow analysis during our free 24-hour DFM phase to balance gates and orient fibers, preventing post-molding structural warpage.<\/p>\n

Protocollo di Pre-Essiccazione con Essiccante:<\/strong> PA66 is highly hygroscopic. Wet processing causes polymer chain cleavage, severe brittleness, and cosmetic splay. We dry raw material in desiccant hopper dryers at 80\u00b0C\u2013100\u00b0C (176\u00b0F\u2013212\u00b0F) for 4\u20136 hours, keeping moisture strictly below 0.10% (ideally <0.08% for heavy load parts).<\/p>\n<\/section>\n

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Key Application Fields for PA-DuPont Zytel 70G33L<\/h2>\n
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  • Automotive Under-the-Hood (IATF 16949):<\/strong> High-strength engine mounts, cylinder head covers, intake manifolds, air intake grills, radiator water tanks, oil pans, and accelerator pedals.<\/li>\n
  • Industria pesante e utensili elettrici:<\/strong> Professional power tool housings, drop-resistant circular saw frames, heavy-duty coil bobbins, transmission gears, and hardware brackets.<\/li>\n
  • Reti intelligenti e infrastrutture elettriche:<\/strong> Interruttori automatici ad alta tensione per servizio pesante, morsettiere, staffe per quadri elettrici di commutazione e telai per contatori di reti intelligenti.<\/li>\n<\/ul>\n<\/section>\n<\/div>","protected":false},"excerpt":{"rendered":"

    Zytel 70G33L Structural Mechanics & Thermal Limits Zytel\u00ae 70G33L NC010 is a 33% glass fiber reinforced, heat-stabilized polyamide 66 resin. Because polyamides absorb moisture, our tool designs and structural simulations account for both Dry-As-Molded (DAM) and Conditioned states: Engineering Property Dry-As-Molded (DAM) Value Conditioned (50% RH) Value Tensile Modulus 11,000 MPa 7,500 MPa Tensile Stress […]<\/p>\n","protected":false},"featured_media":2438,"template":"","meta":[],"class_list":["post-2437","material_model","type-material_model","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/www.jcinjectionmolding.com\/it\/wp-json\/wp\/v2\/material_model\/2437","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jcinjectionmolding.com\/it\/wp-json\/wp\/v2\/material_model"}],"about":[{"href":"https:\/\/www.jcinjectionmolding.com\/it\/wp-json\/wp\/v2\/types\/material_model"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/it\/wp-json\/wp\/v2\/media\/2438"}],"wp:attachment":[{"href":"https:\/\/www.jcinjectionmolding.com\/it\/wp-json\/wp\/v2\/media?parent=2437"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}