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BAM BAM
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Material Properties for Expanded Polystyrene Foam

02/23/2009 9:54 AM

I am in dire need of material properties for a expanded polystyrene foam with densities of 1.12 & 2.8.

The information I need surrounds

Uniaxial test data with components of nominal stress versus nominal strain.

Simple shear stress test data with nominal shear stress versus nominal shear strain versus nominal transverse stress.

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Mikerho
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#1

Re: Material Properties for Expanded Polystyrene Foam

02/23/2009 2:24 PM

Density units?

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#2
In reply to #1

Re: Material Properties for Expanded Polystyrene Foam

02/23/2009 3:03 PM

SI g/m3, g/mm3, or kg/m3.....

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Mikerho
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#7
In reply to #2

Re: Material Properties for Expanded Polystyrene Foam

02/23/2009 4:57 PM

1.12 g/m3 ≠ 1.12 kg/m3

And what is mm3? Cubic millimeters? You need to know with certainty what the units are before you can do a property search. You may also need to convert "your" units to match the property search input units.

Mike

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#10
In reply to #7

Re: Material Properties for Expanded Polystyrene Foam

02/24/2009 9:02 AM

Mike:

What I need is gm/cc - typical densities for packing Styrofoams.

We can convert other units if necessary.

Thank you

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RVZ717
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#3

Re: Material Properties for Expanded Polystyrene Foam

02/23/2009 4:25 PM

www.matlab.com

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#4
In reply to #3

Re: Material Properties for Expanded Polystyrene Foam

02/23/2009 4:48 PM

I think you meant www.matweb.com
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#5
In reply to #4

Re: Material Properties for Expanded Polystyrene Foam

02/23/2009 4:50 PM

and a search of "polystyrene expanded" yielded 176 results
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BAM BAM
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#11
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Re: Material Properties for Expanded Polystyrene Foam

02/24/2009 9:06 AM

RVZ717 & Guest:

Thanks for the matweb tip. That was the first place I looked. Unfortunately, there is not sufficient stress strain data available to run a non-linear transient dynamic analysis to fulfill the *hyperfoam criteria. I suppose if I paid the fee, there might be some data in there sufficient enough to put in this Abaqus run.

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#6

Re: Material Properties for Expanded Polystyrene Foam

02/23/2009 4:50 PM

yes i did mean www.Matweb.com, my apologies.

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omw7
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#8

Re: Material Properties for Expanded Polystyrene Foam

02/24/2009 4:26 AM

Cordek - look for eps (expanded polystyrene). They have a data sheet that is as good as many an other.

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#12
In reply to #8

Re: Material Properties for Expanded Polystyrene Foam

02/24/2009 9:07 AM

OMW7:

I will check their data - thanks for the tip.

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babybear
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#9

Re: Material Properties for Expanded Polystyrene Foam

02/24/2009 7:53 AM

Hello BAM BAM,

I do not know if you want a block or sheet of a certain thickness so check these out please?

  1. Polystyrene Packagingwww.advanced-pp.co.uk/polyst Supply polystyrene packaging stock design or tailor made
  2. Expanded Polystyrene UKwww.Expanded-Polystyrene.co.uk Packaging, Display, Construction Sheet, Bead, Insulation etc.
  3. Polystyrene Insulationwww.styrotech.uk.com All Insulation,Sheet,Void Filling Blocks,Bespoke Profiles & Infil

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  1. CR4 - Thread: Material Properties for Expanded Polystyrene Foam 23 Feb 2009 ... I am in dire need of material properties for a expanded polystyrene foam with densities of 1.12 & 2.8. The information I need surrounds ...
    cr4.globalspec.com/thread/33833/Material-Properties-for-Expanded-Polystyrene-Foam - 19 hours ago - Similar pages
  2. Polymer Testing : Deformability and tensile strength of expanded ... The behavior of expanded polystyrene (EPS) in bending [1] and under compression [2], .... 4b, −1, 0, 6.19, 0.168, 1.12, 0.142, 125.0, 5.84 ..... for all tested EPS boards is 2.8% (according to 71 statistical units, i.e. test results) ...
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Take care...................................

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#13
In reply to #9

Re: Material Properties for Expanded Polystyrene Foam

02/24/2009 9:08 AM

Babybear:

Thank you for the plethora of leads!!!!!!

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beriberi
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#14

Re: Material Properties for Expanded Polystyrene Foam

02/24/2009 6:33 PM

The EPS molders association can lead you to the brains in the US.Their website is www.epsmolders.org

if they don't help you, send me a personal note and I will give you a name and number>

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babybear
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#15
In reply to #14

Re: Material Properties for Expanded Polystyrene Foam

02/25/2009 2:03 PM

Hello beriberi:

GA to you for giving the address of the (probably) one organization who can supply detail or who questions can be asked of.

As far as I know the density of the 'Styrofoam' depends to a large extent on the weight and/or size of the product it has to protect? I have received a very open cell foam and an extremely dense foam. So I think the weight has to be part of the equation.

Take care anyway..........................

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#16

Re: Material Properties for Expanded Polystyrene Foam

02/25/2009 2:31 PM

I doubt there are curves for the densities requested. EPS just isn't that precise. It is a gas expanded plastic whose density control is something of an art and seldom is carried to 2 decimal points. Then the molding which follows is another imprecise art. Since this is a difficult material to measure and get reliable repeatable results I question if this is the material desired.

May I inquire as to the end use?

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