Intermediate Cure Urethane Specifications

View the Freeman Polyurethane Elastomers brochure (pdf)
View the RenCast Fast Polyurethane Specifications (pdf)

 

Mix Ratio
(by wt.) 
Resin:
Hardener

Mix Ratio 
(by vol.) 
Resin:
Hardener

Gel Time
(min.) 
@ 72°F

Demold Time 
(hours) 
@ 72°F

Hardness 
(Shore D)

Viscosity R/H or Mixed
(cps)

Density
(g/cc)

Volumetric Yield 
(cu. in. / lb.)

Shrink
(in / in)

Compressive 
Strength 
(psi)

Flexural Strength 
(psi)

Tensile Strength (psi)

Flexural Modulus (psi)

Deflection Temp. (°F)

Izod 
Impact
(ft.lb./in.)

Tg per
DMA
(°F)

Cured
Color

Freeman 1070

100:92

1:1

3

15-30 min

70

80

1.05

26.6

0.004

-

-

3,000

-

-

-
-
Off-White

Freeman 1080

117:100

1:1

20

2-4

80

150

1.12

24.7

0.001

8,300

9,500

6,650

2.88 x 105

134°

-
-
White

Freeman 1085

1:1

1:1

6

1/2 - 2

69

80

1.12

24.7

0.002

4,880

5,600

3,300

1.7 x 105

137°

-
-
Beige

Freeman 1090

100:90

1:1

20

16

80

600

1.04

26.7

0.001

-

11,000

2,500

-

-

-
-
Clear

RenCast 6432-1 Fast

100:50

100:50

5-6

1-2

72

50/1,100

1.09

25.4
-

7,200

8,600

5,900

234,000

163

0.6

153

Off-White

RenCast 6486 Slow

100:50

100:50

7-8

8

67

7,800/75

1.16

23.9
-

-

4,800

3,600

110,000

156

6.6

217

Amber

RenCast 6491 Fast

1:1

89:100

4-5

4-6

85

200/640

1.14

24.3
-

33,500

16,000

8,600

400,000

205

1.2

224

Amber

RenCast 6492 Fast

1:1

97:100

5-8

4

85

40/1,800

1.3

21.3
-

15,500

14,000

8,200

400,000

158

0.5

156

Off-White

RenCast 6496 Fast

1:1

89:100

5-6

2-4

68

180/340

1.1

25.2
-

-

-

4,000

110,000

140

0.8

-

White

RenCast 6497 Fast

1:1

-

4-5

2

70A

1,875

1.1

25.2
-

-

-

995

-

-

-

-

Light Amber

ASTM

-

-

D-2471

-

D-2240

D-2393

D-792

D-792

D-2566

D-695

D-790

D-638

D-790

D-648

D256

D4065

 

 

*Deflection Temperature is the temperature when a 1/2 x 1/2 x 5 bar (supported at both ends) deflects 0.010 of an inch under a 66 psi fiber stress.
**Unnotched 
The maximum service temperature may be far above this value depending on the application and the stress of the plastic at high temperature