hans_jorgen_1968
3340
Hesalite crystal facts
There has been much said on hesalite crystal as used on the Speedmaster prof Hesalite or from other supplier could also be brandname Perspex. Both of them a PMMA sheet Tradename Material Manufacturer Hesalite PMMA sheet G-S Plastic Optics
Perspex PMMA sheet Lucite International
www.luciteinternational.com
Proporties of the materiel is.
• Exceptional light transmission with virtually no colour bias - even in thick blocks.
• Excellent resistance to outdoor weathering.
• Good resistance to impact.
• A high gloss, hard surface.
• High tensile strength and rigidity.
• Easily thermoformable with simple workshop tools.
• Easy to clean.
• Capable of being fully recycled.
My question, wanting the original speedy was always: How will it take scratches. What I found stated on perspex was:
"Numerous test methods have been devised and a simple guide for plastics is the pencil scratch method using a set of graphite pencils covering the hardness range from 6B to 9H. 'Perspex', which is one of the hardest of the thermoplastics, is scratched by a 9H pencil only"
BR Hans
Some links
UL yellow card:
database.ul.com
en.wikipedia.org
www.paradisespa.co.za
hesalite.blogspot.com
Datasheet Perspex:
www.lucitesolutions.com
Handbook Perspex:
Hesalite crystal facts
