{"id":2460,"date":"2026-05-29T17:41:26","date_gmt":"2026-05-29T09:41:26","guid":{"rendered":"https:\/\/www.jcinjectionmolding.com\/?p=2460"},"modified":"2026-06-29T14:31:36","modified_gmt":"2026-06-29T06:31:36","slug":"pbt-dupont-crastin-sk605","status":"publish","type":"material_model","link":"https:\/\/www.jcinjectionmolding.com\/vi\/materials\/polybutylene-terephthalate-pbt\/pbt-dupont-crastin-sk605\/","title":{"rendered":"PBT-DuPont Crastin SK605"},"content":{"rendered":"
\n

<\/p>\n

\n

Crastin SK605 Mechanical Strength & Electrical Insulation Profile<\/h2>\n

Crastin\u00ae SK605 NC010 is a 30% glass fiber reinforced, lubricated polybutylene terephthalate resin engineered by Celanese (formerly DuPont) to deliver exceptional strength, stiffness, and high arc resistance:<\/p>\n\n\n\n\n\n\n\n
Mechanical \/ Electrical Metrics<\/th>\nTypical Value (ISO Standard)<\/th>\nL\u1ee3i th\u1ebf \u00e9p phun v\u00e0 \u1ee9ng d\u1ee5ng cu\u1ed1i<\/th>\n<\/tr>\n<\/thead>\n
Tensile Stiffness<\/td>\nTensile Modulus 10,000 MPa \/ Strength 140 MPa<\/td>\nProvides exceptional, metal-like structural rigidity, replacing die-cast zinc or aluminum brackets in automotive interiors.<\/td>\n<\/tr>\n
Electrical Isolation<\/td>\nDielectric Strength 20 kV\/mm (at 2mm)<\/td>\nOutstanding insulation resistance and arc-tracking resistance, preventing voltage leaks in high-voltage EV connectors.<\/td>\n<\/tr>\n
Processing Flow<\/td>\nMVR 7.0 cm\u00b3\/10min (MFR 10 g\/10min)<\/td>\nEasy-release lubricated matrix ensures smooth, rapid flow and clean, automatic ejection on high-speed automated runs.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n

<\/p>\n

\n

Structural Component Process Configurations for Crastin SK605<\/h2>\n

With its high-stiffness reinforcement and lubricated chemistry, Crastin SK605 is highly optimized for complex dynamic components:<\/p>\n\n\n\n\n\n\n\n
Process Category<\/th>\nKh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch khu\u00f4n & Chi ti\u1ebft thi\u1ebft l\u1eadp quy tr\u00ecnh<\/th>\n<\/tr>\n<\/thead>\n
\u7cbe\u5bc6\u7535\u6c14\u8fde\u63a5\u5668<\/td>\nExcellent. Fully optimized for automotive engine block sensor plugs, high-density multi-pin connectors, and dynamic relay housings.<\/td>\n<\/tr>\n
\u91cd\u578b\u7ed5\u7ec4\u4e0e\u9aa8\u67b6<\/td>\nExcellent. High tensile modulus prevents part deformation or deflection under high copper wire tension on multi-slot bobbins.<\/td>\n<\/tr>\n
\u9ad8\u7f8e\u89c2\u5bb6\u7535\u88c5\u9970\u6761<\/td>\nGood. Easy-release lubricants combined with optimized tooling result in premium surface finishes with minimized glass fiber visibility.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n

<\/p>\n

\n

PBT-DuPont Crastin SK605 Mold Engineering Blueprint<\/h2>\n

Molding an un-lubricated crystalline composite like Crastin SK605 requires strict moisture control and optimized gating to prevent abrasive tool wear and warpage:<\/p>\n

\n
\n

\u786c\u5316 S136 \u6a21\u5177\uff08\u9632\u6b62\u78e8\u8680\u6027\u78e8\u635f\uff09<\/p>\n

30% glass fibers act as an abrasive medium under high injection speeds. Jucheng\u2019s tooling division prevents cavity erosion 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 and flash-free components.<\/p>\n<\/div>\n

\n

Ki\u1ec3m so\u00e1t co ng\u00f3t kh\u00f4ng \u0111\u1eb3ng h\u01b0\u1edbng v\u00e0 cong v\u00eanh<\/p>\n

Crastin SK605 shrinks much less along the flow (0.30%) than perpendicular to it (1.10%). We use Moldflow simulation during our free DFM review to balance gate locations, aligning glass fibers uniformly to prevent component warping and out-of-tolerance dimensions.<\/p>\n<\/div>\n

\n

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 Crastin SK605 resin at 120\u00b0C (248\u00b0F) for 3\u20134 hours, keeping moisture below 0.04%.<\/p>\n<\/div>\n

\n

Balanced Cooling Loops<\/p>\n

\u0110\u1ec3 ng\u0103n ng\u1eeba cong v\u00eanh trong c\u00e1c khung \u0111i\u1ec7n ph\u1ee9c t\u1ea1p, ch\u00fang t\u00f4i gia c\u00f4ng c\u00e1c m\u1ea1ch l\u00e0m m\u00e1t c\u00e2n b\u1eb1ng, ph\u00f9 h\u1ee3p tr\u1ef1c ti\u1ebfp v\u00e0o c\u00e1c kh\u1ed1i l\u00f5i \u0111\u1ec3 t\u0103ng t\u1ed1c \u0111\u1ed9 t\u1ea3n nhi\u1ec7t, gi\u1ea3m th\u1eddi gian chu k\u1ef3 v\u00e0 ng\u0103n ng\u1eeba cong v\u00eanh do nhi\u1ec7t.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

<\/p>\n

\n

Key Application Fields for PBT-DuPont Crastin SK605<\/h2>\n
    \n
  • Automotive Electrical & Powertrains (IATF 16949):<\/strong> High-voltage EV connectors, ignition coil bobbins, throttle sensor housings, headlamp bezel assemblies, and electric water pump housings.<\/li>\n
  • Linh ki\u1ec7n \u0111i\u1ec7n & L\u01b0\u1edbi \u0111i\u1ec7n th\u00f4ng minh:<\/strong> B\u1ed9 ng\u1eaft m\u1ea1ch c\u00f4ng nghi\u1ec7p, \u0111\u1ebf r\u01a1 le h\u1ea1ng n\u1eb7ng, kh\u1ed1i \u0111\u1ea5u d\u00e2y, \u0111\u1ed3ng h\u1ed3 \u0111i\u1ec7n th\u00f4ng minh v\u00e0 \u1ed1ng ch\u1ec9 cu\u1ed9n d\u00e2y.<\/li>\n
  • Consumer Electronics & Appliances:<\/strong> Tay c\u1ea7m thi\u1ebft b\u1ecb h\u1ea1ng n\u1eb7ng, v\u1ecf \u0111\u00e8n pha ngo\u00e0i tr\u1eddi, vi\u1ec1n \u0111\u1ed3ng h\u1ed3 nhi\u1ec7t \u0111\u1ed9 cao v\u00e0 v\u1ecf van h\u00f3a ch\u1ea5t k\u1ebft c\u1ea5u.<\/li>\n<\/ul>\n<\/section>\n<\/div>","protected":false},"excerpt":{"rendered":"

    Crastin SK605 Mechanical Strength & Electrical Insulation Profile Crastin\u00ae SK605 NC010 is a 30% glass fiber reinforced, lubricated polybutylene terephthalate resin engineered by Celanese (formerly DuPont) to deliver exceptional strength, stiffness, and high arc resistance: Mechanical \/ Electrical Metrics Typical Value (ISO Standard) Molding & End-Use Advantage Tensile Stiffness Tensile Modulus 10,000 MPa \/ Strength […]<\/p>\n","protected":false},"featured_media":2461,"template":"","meta":[],"class_list":["post-2460","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\/2460","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\/2461"}],"wp:attachment":[{"href":"https:\/\/www.jcinjectionmolding.com\/vi\/wp-json\/wp\/v2\/media?parent=2460"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}