{"id":2462,"date":"2026-05-29T17:47:01","date_gmt":"2026-05-29T09:47:01","guid":{"rendered":"https:\/\/www.jcinjectionmolding.com\/?p=2462"},"modified":"2026-06-29T14:40:08","modified_gmt":"2026-06-29T06:40:08","slug":"pbt-basf-ultradur-b4406","status":"publish","type":"material_model","link":"https:\/\/www.jcinjectionmolding.com\/vi\/materials\/polybutylene-terephthalate-pbt\/pbt-basf-ultradur-b4406\/","title":{"rendered":"PBT-BASF Ultradur B4406"},"content":{"rendered":"
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Ultradur B4406 Migration-Free Fire Safety & Physical Modulus<\/h2>\n

Ultradur\u00ae B 4406 is an unreinforced, injection molding PBT grade engineered by BASF, formulated with non-migrating organic flame retardants to secure ultimate fire safety and dielectric strength under UL 94 standards:<\/p>\n\n\n\n\n\n\n\n
Ti\u00eau chu\u1ea9n ch\u1ed1ng ch\u00e1y v\u00e0 hi\u1ec7u su\u1ea5t<\/th>\nUltradur B4406 Specification<\/th>\nMolding & Electrical Safety Advantage<\/th>\n<\/tr>\n<\/thead>\n
Thin-Wall Flammability<\/td>\nUL 94 V-0 Rated at 0.40 mm<\/td>\nAchieves self-extinguishing safety in ultra-thin micro-connector geometries, preventing localized ignition and thermal propagation.<\/td>\n<\/tr>\n
Migration-Free additive<\/td>\nZero Halogen Surface Bloom<\/td>\nPrevents flame-retardant additives from blooming or migrating to part surfaces over time, ensuring clean surface aesthetics and stable contact resistance.<\/td>\n<\/tr>\n
Material Density<\/td>\nPure Density 1.45 g\/cm\u00b3<\/td>\nHeavy organic FR compound packages elevate the density of unreinforced matrix, providing enhanced structural weight feel and low porosity.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n

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Process & Thickness Configurations for Non-Migrating Ultradur B4406<\/h2>\n

With its high crystallization velocity and low melt viscosity, Ultradur B4406 processes beautifully inside precision tooling:<\/p>\n\n\n\n\n\n\n\n
Quy tr\u00ecnh \u0111\u00fac<\/th>\nKh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch \u0110\u00fac & Chi ti\u1ebft V\u1eadn h\u00e0nh<\/th>\n<\/tr>\n<\/thead>\n
Thin-Wall Connector Modules<\/td>\nExcellent. Highly suitable for sub-millimeter plug-and-socket connectors, terminal grids, and intricate electrical relays with complex paths.<\/td>\n<\/tr>\n
Precision Switch Bezels<\/td>\nExcellent. Its low molecular shrinkage supports stable dimensions in high-precision micro-switches, circuit breakers, and industrial sensor covers.<\/td>\n<\/tr>\n
Dynamic Low-Moisture Sockets<\/td>\nGood. Extremely low water absorption prevents dimensional swelling in humid environments, ensuring tight-fitting snap assemblies.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n

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PBT-BASF Ultradur B4406 Tooling & Outgassing Matrix<\/h2>\n

Molding an unreinforced, flame-retardant grade like B4406 requires strict melt temperature windows to prevent outgassing corrosion, alongside desiccant drying:<\/p>\n

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S136 Hardened Steel Core (Corrosion Control)<\/p>\n

At melt temperatures above 280\u00b0C, organic flame retardants in B4406 can break down, releasing corrosive acidic gases. Jucheng\u2019s tooling division prevents cavity pitting by constructing molds with premium S136 stainless tool steel hardened to 48\u201352 HRC and machined on our 5-axis CNCs, ensuring long-term parting line precision.<\/p>\n<\/div>\n

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High-Capacity Outgassing Slots<\/p>\n

To prevent gas-induced diesel burn marks and short shots, we machine deep, strategically positioned venting channels (0.015mm to 0.020mm depending on gate layout) on the mold parting lines. This secures clean, blemish-free parts on multi-cavity runs.<\/p>\n<\/div>\n

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Quy tr\u00ecnh s\u1ea5y h\u00fat \u1ea9m (Ng\u0103n ng\u1eeba th\u1ee7y ph\u00e2n)<\/p>\n

PBT is highly sensitive to moisture at high melt temperatures. Wet molding results in rapid hydrolytic chain cleavage, causing severe splay, gas bubbles, and a major drop in impact strength. We desiccant dry Ultradur B4406 resin at 120\u00b0C (248\u00b0F) for 4 hours, keeping moisture strictly below 0.04%.<\/p>\n<\/div>\n

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Melt & Mold Temperature Control<\/p>\n

Processing barrel temperatures are maintained between 250\u00b0C and 275\u00b0C (482\u00b0F to 527\u00b0F) to ensure homogeneous melting. Mold temperatures are kept at 40\u00b0C to 70\u00b0C (104\u00b0F to 158\u00b0F) to optimize crystalline structure, high surface gloss, and mechanical strength.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Key Application Fields for PBT-BASF Ultradur B4406<\/h2>\n
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  • Smart-Grids & Electrical Infrastructure:<\/strong> High-insulation circuit breakers, smart electricity meters, terminal blocks, electrical relay housings, wall switch frames, and coil bobbins.<\/li>\n
  • EV Charging & Automotive Systems (IATF 16949):<\/strong> V\u1ecf s\u00fang s\u1ea1c xe \u0111i\u1ec7n, n\u1eafp h\u1ed9p n\u1ed1i \u0111i\u1ec7n cao th\u1ebf, v\u1ecf c\u1ea7u ch\u00ec n\u1ed9i th\u1ea5t v\u00e0 v\u1ecf c\u1ea3m bi\u1ebfn xe.<\/li>\n
  • Consumer Electronics & Telecommunications:<\/strong> Wi-Fi router enclosures, charger adapter bodies, power tool housings, and set-top boxes.<\/li>\n<\/ul>\n<\/section>\n<\/div>","protected":false},"excerpt":{"rendered":"

    Ultradur B4406 Migration-Free Fire Safety & Physical Modulus Ultradur\u00ae B 4406 is an unreinforced, injection molding PBT grade engineered by BASF, formulated with non-migrating organic flame retardants to secure ultimate fire safety and dielectric strength under UL 94 standards: Flammability & Performance Standard Ultradur B4406 Specification Molding & Electrical Safety Advantage Thin-Wall Flammability UL 94 […]<\/p>\n","protected":false},"featured_media":2463,"template":"","meta":[],"class_list":["post-2462","material_model","type-material_model","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/www.jcinjectionmolding.com\/vi\/wp-json\/wp\/v2\/material_model\/2462","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jcinjectionmolding.com\/vi\/wp-json\/wp\/v2\/material_model"}],"about":[{"href":"https:\/\/www.jcinjectionmolding.com\/vi\/wp-json\/wp\/v2\/types\/material_model"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/vi\/wp-json\/wp\/v2\/media\/2463"}],"wp:attachment":[{"href":"https:\/\/www.jcinjectionmolding.com\/vi\/wp-json\/wp\/v2\/media?parent=2462"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}