Styrene Methyl Methacrylate (SMMA)

Alternative and trade names
NAS®
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Description

Transparent styrene acrylic copolymers are a premium choice for applications demanding a strong, stiff, water-clear plastic. It provides excellent thermal stability, better alcohol resistance, and less molded in stress than acrylic as well as good flowability.

This material data has been provided by M-Base.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

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Properties

General

PropertyValue

Density

1.03 - 1.13 g/cm³

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Mechanical

PropertyValueComment

Elastic modulus

3.1 - 3.4 GPa

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Elongation

2.0 - 3.0 %

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Impact strength, Charpy notched

1.5 - 2.5 kJ/m²

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Impact strength, Charpy unnotched

12 kJ/m²

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15 kJ/m²

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Tensile strength

60.0 - 70.0 MPa

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at 2-3% strain

Thermal

PropertyValue

Flammability

UL 94 HB

Optical

PropertyValue

Transparency

yes

Technological properties

Property
Application areas

Medical devices, office accessories, water filters, food boxes, diabetes devices

Processing methods

injection molding, extrusion