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Plastics & Elastomers
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Technical Datasheet | Supplied by Sumitomo Chemical
SUMIPEX® HT55Y by Sumitomo Chemical is a polymethyl methacrylate acrylic grade. It is available in the form of clear/transparent pellets. Exhibits good crack resistance, good strength, good transparency, good impact resistance, good mechanical strength and good weather resistance. This increased strength functions to reduce the amount of cracking that might occur, at the time of molding or transportation. Suitable for processing by injection molding. SUMIPEX® HT50Y is used in automotive applications, automotive instrument panel, construction applications, automotive exterior parts, automotive interior trim and table products.
Product Type
PMMA (Acrylic) > PMMA
Physical Form

SUMIPEX® HT55Y Properties

Physical Properties

Value & Unit
Test Condition
Test Method
Specific Gravity
1.17 -
( )
JIS K7112
Melt Mass-Flow Rate (MFR or MFI = Melt Flow Index or MI = Melt Index)
2 g/10 min
(230°C / 3.8 kg)
JIS K7210
Water Absorption
0.40 %
(73°C, 24 hr)
JIS K7209

SUMIPEX® HT55Y Processing Guidelines

Injection Molding Properties

Value & Unit
Test Condition
Test Method
Drying Temperature
70 - 80 °C
Mold Temperature
70 - 80 °C
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