Acrylic - Materials - Technical

Acrylic - Polymethylmethacrylate (PMMA)

SPB Products made from this material
Balls

PMMA is an amorphous, transparent thermoplastic that is hard and stiff but brittle and notch-sensitive. It is UV resistant but has poor low temperature and solvent resistance. It is flammable but it has low smoke emission.

Properties of Polymethylmethacrylate

Physical Properties
PROPERTY UNIT VALUE
Density g/cm3 1.19
Surface Hardness Rockwell M 92-100
Tensile Strength MPa 80
Tensile Modulus GPa 2.4-3.3
Izod Impact Strength J m-1 16-32
Elongation at Break % 2.5-4
Max Operating Temp. oC 85
Water Absorption % 0.2 Over 24 Hours
Flammability UL94 HB
Volume Resistivity ohm.cm 2-14x1015
Dielectric Strength kV/mm-1 15
Dissipation Factor @ 1MHz 0.014
Dielectric Constant @ 1MHz 2.6
Heat Deflection Temp. @ 0.45 MPa oC 105
Heat Deflection Temp. @ 1.80 MPa oC 95

Chemical Resistance
Chemical Resistance
Acids (Concentrated) Poor-Good
Acids (Dilute) Poor-Good
Alcohols Poor-Good
Alkalis Good
Aromatic hydrocarbons Poor
Greases and Oils Good
Halogenated Hydrocarbon Poor
Halogens Poor
Ketones Poor

Note! Property values are typical and should be used only as a guide to selection of materials and not as purchase specifications.


You can find PMMA products online at Small Parts and Bearings PMMA Online Catalogue pages.


For a huge range of bearings online please visit the Bearing Shop Online Website.

Hobby and Engineering Supplies lists a smaller range of products and only the most popular items in each range. They also list many additional hobby specific categories.

For the best range of miniature and small bearings please try the Miniature Bearings Australia website. Miniature Bearings Australia also list a large variety of miniature engineering products.



Other pages related to Technical - Materials

Click Page Banner Below

Top

Other Technical Pages

Click Page Banner Below

Top

Main Pages

Click Page Banner Below

Top





Top



Freight Rates
Terms and Conditions
Privacy Policy

Small Parts and Bearings offers 124306 products in 3086 categories including ball bearings, roller bearings, thrust bearings, ceramic and ceramic hybrid bearings, stainless steel bearings, miniature bearings, linear bearings, shafting, oil seals and adhesives - see the full listing in the Online Catalogue. We have excellent Freight Rates within Australia and worldwide. We offer a choice of delivery with a signature required, or cheaper options with no signature required. The no signature required options are at the customer’s risk once the goods leave our store.

Using the links throughout this site you will find extensive information including catalogues, technical data, and other product specific information. We sell our products worldwide through our online store and our overseas freight rates are competitive for fully traceable courier delivery.

Small Parts and Bearings is part of MBA Group offering a select range from the MBA Group catalogue.

Small Parts and Bearings products are not authorised for sale into the USA or Canada due to the reluctance of Australian insurers to provide product liability insurance into those two countries.

Information on this website is Copyright Small Parts and Bearings 1997. All rights reserved.