{"id":2458,"date":"2026-05-29T17:31:06","date_gmt":"2026-05-29T09:31:06","guid":{"rendered":"https:\/\/www.jcinjectionmolding.com\/?p=2458"},"modified":"2026-06-29T14:28:09","modified_gmt":"2026-06-29T06:28:09","slug":"pbt-basf-ultradur-b4500","status":"publish","type":"material_model","link":"https:\/\/www.jcinjectionmolding.com\/ar\/materials\/polybutylene-terephthalate-pbt\/pbt-basf-ultradur-b4500\/","title":{"rendered":"PBT-BASF Ultradur B4500"},"content":{"rendered":"
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BASF Ultradur B4500 Toughness & Rheological Profile<\/h2>\n

Ultradur\u00ae B 4500 is a medium-viscosity, unreinforced PBT resin engineered by BASF, formulated to provide high melt strength, high tensile ductility, and excellent dimensional repeatability:<\/p>\n\n\n\n\n\n\n\n
\u0627\u0644\u0645\u0639\u0627\u0645\u0644 \u0627\u0644\u0641\u064a\u0632\u064a\u0627\u0626\u064a \u0648\u0645\u0639\u0627\u0645\u0644 \u0627\u0644\u0642\u0648\u0629<\/th>\nUltradur B4500 Spec Value<\/th>\n\u0627\u0644\u0645\u064a\u0632\u0629 \u0627\u0644\u0647\u0646\u062f\u0633\u064a\u0629 \u0644\u0644\u0623\u062c\u0632\u0627\u0621 \u0627\u0644\u0645\u0642\u0648\u0644\u0628\u0629<\/th>\n<\/tr>\n<\/thead>\n
Exceptional Ductility<\/td>\nNominal Strain at Break >50%<\/td>\nProvides substantial structural elongation and toughness without glass fibers, preventing cracking in flexible snap-fits and hinges.<\/td>\n<\/tr>\n
Stable Flow Rheology<\/td>\nMVR 19 cm\u00b3\/10min (250\u00b0C x 2.16kg)<\/td>\nIntermediate melt flow rate ensures highly balanced pressure distribution inside thin-walled technical profiles and pipe fittings.<\/td>\n<\/tr>\n
Pure Density Profile<\/td>\nUnfilled Density 1.30 g\/cm\u00b3<\/td>\nOffers lightweight structural integrity compared to 30% glass-filled variants, ensuring lower weight in dynamic aerospace connectors.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n

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Structural Component Process Configurations for Ultradur B4500<\/h2>\n

With its high crystallinity rate and stable melt index, Ultradur B4500 processes smoothly across complex multi-cavity tooling:<\/p>\n\n\n\n\n\n\n\n
\u062a\u0642\u0646\u064a\u0629 \u0627\u0644\u062a\u0634\u0643\u064a\u0644<\/th>\n\u0627\u0644\u062a\u0648\u0627\u0641\u0642 \u0627\u0644\u062a\u0634\u063a\u064a\u0644\u064a \u0648\u0627\u0644\u062a\u0641\u0627\u0635\u064a\u0644 \u0627\u0644\u062a\u0634\u063a\u064a\u0644\u064a\u0629<\/th>\n<\/tr>\n<\/thead>\n
Precision Thin-Walled Profiles<\/td>\nExcellent. Highly optimized for extruding and injection molding thin-walled technical pipes, fluid-handling conduits, and complex diagnostic cassettes.<\/td>\n<\/tr>\n
Food-Contact Consumer Systems<\/td>\nExcellent (via FC \/ Food Contact compliant versions). Ideal for high-safety consumer coffee machine adapters, food packaging closures, and structural dishwashing racks.<\/td>\n<\/tr>\n
Metal-Insertion Assemblies<\/td>\nExcellent. Safe for encapsulating metallic electrical contacts and bushings directly inside high-insulation connector blocks without cracking.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n

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PBT-BASF Ultradur B4500 Molding & Melt Control Checklist<\/h2>\n

Processing a semi-crystalline engineering polyester like Ultradur B4500 requires strict moisture control and balanced cooling to manage volumetric shrinkage:<\/p>\n

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Hygroscopic Hydrolysis Protection<\/p>\n

At high melt temperatures, PBT is highly sensitive to moisture. Wet molding results in rapid hydrolytic chain cleavage, causing severe splay, bubbles, and a major drop in tensile strength. We pre-dry Ultradur B4500 resin in desiccant hopper dryers at 120\u00b0C (248\u00b0F) for 3\u20134 hours, keeping moisture strictly below 0.04%.<\/p>\n<\/div>\n

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Balanced Cooling & Shrinkage Controls<\/p>\n

Being an unfilled crystal grade, Ultradur B4500 exhibits high shrinkage (typically 1.60% parallel and 1.90% normal to flow). Jucheng’s tooling division uses 5-axis CNC machines to mill uniform, balanced cooling circuits directly inside mirror-polished S136 stainless steel mold cavity blocks to prevent warpage.<\/p>\n<\/div>\n

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\u064a\u062a\u0645 \u0627\u0644\u062d\u0641\u0627\u0638 \u0639\u0644\u0649 \u062f\u0631\u062c\u0627\u062a \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u0628\u0631\u0645\u064a\u0644 \u0628\u064a\u0646 250 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629 \u0648 275 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629 (482 \u062f\u0631\u062c\u0629 \u0641\u0647\u0631\u0646\u0647\u0627\u064a\u062a \u0625\u0644\u0649 527 \u062f\u0631\u062c\u0629 \u0641\u0647\u0631\u0646\u0647\u0627\u064a\u062a) \u0644\u0636\u0645\u0627\u0646 \u0630\u0648\u0628\u0627\u0646 \u0645\u062a\u062c\u0627\u0646\u0633. \u064a\u062a\u0645 \u0627\u0644\u062d\u0641\u0627\u0638 \u0639\u0644\u0649 \u062f\u0631\u062c\u0627\u062a \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u0642\u0627\u0644\u0628 \u0639\u0646\u062f 40 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629 \u0625\u0644\u0649 70 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629 (104 \u062f\u0631\u062c\u0629 \u0641\u0647\u0631\u0646\u0647\u0627\u064a\u062a \u0625\u0644\u0649 158 \u062f\u0631\u062c\u0629 \u0641\u0647\u0631\u0646\u0647\u0627\u064a\u062a) \u0644\u062a\u062d\u0633\u064a\u0646 \u0627\u0644\u0628\u0646\u064a\u0629 \u0627\u0644\u0628\u0644\u0648\u0631\u064a\u0629 \u0648\u0627\u0644\u0644\u0645\u0639\u0627\u0646 \u0627\u0644\u0633\u0637\u062d\u064a \u0627\u0644\u0639\u0627\u0644\u064a \u0648\u0627\u0644\u0642\u0648\u0629 \u0627\u0644\u0645\u064a\u0643\u0627\u0646\u064a\u0643\u064a\u0629.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Key Application Fields for PBT-BASF Ultradur B4500<\/h2>\n
    \n
  • \u0627\u0644\u0647\u0646\u062f\u0633\u0629 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629 \u0648\u0627\u0644\u0634\u0628\u0643\u0627\u062a \u0627\u0644\u0630\u0643\u064a\u0629:<\/strong> High-insulation connector blocks, multi-pin electrical terminals, coil bobbins, smart power meter frames, and switchgears.<\/li>\n
  • Food-Safe Consumer Systems (FC Compliant):<\/strong> \u0645\u062d\u0648\u0644\u0627\u062a \u0622\u0644\u0627\u062a \u0627\u0644\u0642\u0647\u0648\u0629 \u0627\u0644\u0645\u0646\u0632\u0644\u064a\u0629 \u0627\u0644\u0642\u0627\u0628\u0644\u0629 \u0644\u0625\u0639\u0627\u062f\u0629 \u0627\u0644\u0627\u0633\u062a\u062e\u062f\u0627\u0645\u060c \u0623\u063a\u0637\u064a\u0629 \u0645\u0642\u0627\u0648\u0645\u0629 \u0644\u0644\u0628\u062e\u0627\u0631\u060c \u0623\u063a\u0637\u064a\u0629 \u062a\u063a\u0644\u064a\u0641 \u0627\u0644\u0645\u0648\u0627\u062f \u0627\u0644\u063a\u0630\u0627\u0626\u064a\u0629\u060c \u0648\u0627\u0644\u0623\u062c\u0632\u0627\u0621 \u0627\u0644\u0647\u064a\u0643\u0644\u064a\u0629 \u0644\u063a\u0633\u0627\u0644\u0627\u062a \u0627\u0644\u0623\u0637\u0628\u0627\u0642.<\/li>\n
  • Precision Fluid & Automotive Pipes:<\/strong> Thin-walled chemical conduits, industrial pipe connectors, fluid water mixing valves, and fuel sensor enclosures (IATF 16949).<\/li>\n<\/ul>\n<\/section>\n<\/div>","protected":false},"excerpt":{"rendered":"

    BASF Ultradur B4500 Toughness & Rheological Profile Ultradur\u00ae B 4500 is a medium-viscosity, unreinforced PBT resin engineered by BASF, formulated to provide high melt strength, high tensile ductility, and excellent dimensional repeatability: Physical & Strength Parameter Ultradur B4500 Spec Value Engineering Advantage for Molded Parts Exceptional Ductility Nominal Strain at Break >50% Provides substantial structural […]<\/p>\n","protected":false},"featured_media":2459,"template":"","meta":[],"class_list":["post-2458","material_model","type-material_model","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/www.jcinjectionmolding.com\/ar\/wp-json\/wp\/v2\/material_model\/2458","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jcinjectionmolding.com\/ar\/wp-json\/wp\/v2\/material_model"}],"about":[{"href":"https:\/\/www.jcinjectionmolding.com\/ar\/wp-json\/wp\/v2\/types\/material_model"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/ar\/wp-json\/wp\/v2\/media\/2459"}],"wp:attachment":[{"href":"https:\/\/www.jcinjectionmolding.com\/ar\/wp-json\/wp\/v2\/media?parent=2458"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}