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

3,650

4,500

3,000

132,000

140°

-
-
Off-White

Freeman 1080

115:100

1:1

20

2 - 4

80

150

1.12

24.7

0.003

8,300

9,500

6,650

288,000

134°

0.31
-
White

Freeman 1085

1:1

1:1

6

30 - 120 min.

69

80

1.12

24.7

0.002

4,880

5,600

3,300

170,000

137°

0.35
172
Beige

RenCast 6432-1 Fast

100:50

100:50

5-6

1 - 2

72

50/1,100

1.13

24.5
0.005

7,200

8,600

5,900

234,000

163

0.6

153

Off-White

RenCast 6486 Slow

100:50

1:1

7-8

8

67

7,800/75

1.16

23.9
-

-

4,750

3,600

110,000

156

6.6

156

Amber

RenCast 6491 Fast

1:1

89:100

4-5

30 - 40 min.

85

200/640

1.22

23
-

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

Freeman Synthene PRC 1719

100:60

19

120 min. @ 158°F

87

400

1.10

12,183

9,427

200

Transparent colorless

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