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Ren® Seamless Modeling/Fixture Paste Specifications

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RenPaste 4503

RenPaste 4618-1

Ren RP 4040

Ren RP 6418-1 / Ren 4619

Color

Brown

Light Grey

Off White

Light Grey

Mix Ratio - Resin to Hrd'nr
(by wt.)

100:90

100:50

N/A

100:50

Mix Ratio - Resin to Hrd'nr
(by vol.)

100:100

N/A

100:50

Gel Time (min) [D-2471]

60-90

15

N/A

150

Density (g/cm3) [D-1963]

0.8

0.9

1.6

0.9

Hardness (Shore D) [D-2240]

60

76

88

76

Compressive Strength
(psi)
[D-695]

2,100

9,280

20,500

Flexural Strength (psi) [D-790]

2,200

5,220

8,140

Deflection Temp.
(264 psi) (°F)
[D-648]

118

122

Tg DMA Onset (°F) [D-4065]

137

220

Tg DMA Peak (°F) [D-4065]

159

324

Coefficient Of Thermal
Expansion (in./in./°F)
[D-3386]

32 x 10-6

30 x 10-6

10 x 10-6

 

 
 

 

 

 

 


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