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Technical Datasheet | Supplied by Toray
TORAYCON® 1158W by Toray is polybutylene terephthalate (PBT) grade reinforced with 35% glass fiber. Offers excellent heat cycle-, chemical-, abrasion- and wear resistance. Exhibits low warpage, high crystallization rate, outstanding surface gloss, superior dimensional stability and low water absorption. Possesses high flowability, excellent electrical, anti-creep and anti-fatigue properties. It can be processed by injection molding. TORAYCON® 1158W is recommended for automobile applications. Complies with UL 94 HB flame rating.
Product Type
Polyester > PBT
Physical Form
Product Status

TORAYCON® 1158W Properties

Physical Properties

Value & Unit
Test Condition
Test Method
Water Absorption
0.08 %
(At 23°C, 24 hr)
ISO 62
1490 kg/m³
(At 23°C)
ISO 1183
Linear Mold Shrinkage, Flow
0.4 %
(80×80×3 mm)
Toray Method

TORAYCON® 1158W Processing Guidelines

Injection Molding Properties

Value & Unit
Test Condition
Test Method
Melt Temperature
230 - 260 °C
Drying Temperature
120 - 130 °C
Drying Time
3 - 5 hr
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