Lucite International Diakon® ST25H8 Toughened Acrylic Compound

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Lucite International Diakon® ST25H8 Toughened Acrylic Compound
Categories:	Polymer; Thermoplastic; Acrylic (PMMA); Acrylic, Impact Modified, Molded
Material Notes:	The Diakon® impact PMMA series offer the best combination of impact, chemical and heat resistance and provide rigidity and surface hardness. The grades in the Diakon® series can be processed by injection molding or extrusion. Information provided by Lucite International
Key Words:	PMMA; Polymethyl Methacrylate; Polymethylmethacrylate
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Physical Properties	Metric	English	Comments

Density	1.17 g/cc	0.0423 lb/in³	ISO 1183
Water Absorption	0.32 %	0.32 %	ISO 62
Linear Mold Shrinkage	0.0040 - 0.0070 cm/cm	0.0040 - 0.0070 in/in
Melt Flow	0.80 g/10 min	0.80 g/10 min	ISO 1133

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell M	74	74	ISO 2039-2
Tensile Strength	73.0 MPa	10600 psi	ISO 527
Elongation at Break	20 %	20 %	ISO 527
Flexural Strength	100 MPa	14500 psi	ISO 178
Flexural Modulus	2.90 GPa	421 ksi	ISO 178
Izod Impact, Notched (ISO)	3.90 kJ/m²	1.86 ft-lb/in²	ISO 180/1A
Charpy Impact Unnotched	5.40 J/cm²	25.7 ft-lb/in²	ISO 179/1eU
Charpy Impact, Notched	0.400 J/cm²	1.90 ft-lb/in²	ISO 179/1eA

Thermal Properties	Metric	English	Comments
CTE, linear	100 µm/m-°C	55.6 µin/in-°F	ASTM E831
Vicat Softening Point	103 °C	217 °F	ISO 306B
	114 °C	237 °F	ISO 306A
Heat Distortion Temperature	97.0 °C	207 °F	ISO 75A
Flammability, UL94	HB	HB
Glow Wire Test	650 °C	1200 °F	IEC 695-2-1

Optical Properties	Metric	English	Comments
Refractive Index	1.49	1.49	ISO 489
Haze	2.0 %	2.0 %	ASTM D1003
Transmission, Visible	91 %	91 %	ASTM D1003

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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PLUCIT9414 / 150128

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