[Halld-cal] Acrylic properties from CERN stores (fwd from Serguei)

[Elton Smith]

On Fri, 14 Jan 2011 serguei at jlab.org wrote:

>             Elton,
> Here is an information about the acrylic plastic, that we use for LG.
>
>
>  CERN Stores Catalogue
>
> SCEM Code:   Keyword(s):
>
>
>  Group: 44.96 44.96.60.B
>
>
>
> 44.96.60.A - SQUARE BARS - COLOURLESS PLEXIGLAS
> Technical information : product manager
>
> --------------------------------------------------------------------------------
>
> ALLOY SYMBOL  : ACRYLIC GLASS
> TRADE NAME    : PLEXIGLAS gs
> SURFACE STATE : POLISHED, VERY BRIGHT
> MECHANICAL CHARACTERISTICS :
> Elastic modulus E in traction  3300 N/mm2
> Traction resistance B  80 N/mm2
> Elongation at break R  5.5%
> Ball impact hardness H961/30  200 N/mm2
> PHYSICAL CHARACTERISTICS :
> Density  1.18 g/cm3
> Water absorption  30 mg in 24 hours
> Weather resistance  very good
> Cast colourless Plexiglas panes
> THERMAL CHARACTERISTICS :
> Specific heat C  1.47 Ws/gK
> Long-term heat resistance  60 - 80°C
> ELECTRICAL CHARACTERISTICS :
> Dry resistivity d  10**15 Ohm.cm
> Dielectric strength  30 kV/mm
> OPTICAL CHARACTERISTICS :
> Light transmission by translucence  92%
> Reflection losses  4%
> Absorption in visible spectrum at 3 mm  <0.05%
> Refractive index n 20/D  1.491
> NOTES: DO NOT CLEAN WITH ALCOHOL :  CRAZES
> MANUFACTURING LENGTH : 2 m
> Buy SCEM Code Unit Unit Price S
> mm
>   44.96.60.080.7 MT 9.6 8
>   44.96.60.100.0 MT 11.0 10
>   44.96.60.115.3 MT 11.0 15
>   44.96.60.120.6 MT 16.0 20
>   44.96.60.125.1 MT 22.0 25
>   44.96.60.130.4 MT 35.5 30
>   44.96.60.140.2 MT 51.5 40
>   44.96.60.150.0 MT 71.0 50
>
>
> --------------------------------------------------------------------------------
>
> Legend: Item stocked at CERN (subject to the quantities available) Item
> not stocked at CERN Not replenished
>
> General information : e-mail to Cern.Stores
>