Epoxy Casting Resins Specifications

View the Freeman Epoxy Tooling Resins Brochure (pdf)
View the RenCast Epoxy Casting Resins Specifications (pdf)


Aluminum-Filled Epoxy Casting Resins

Product
Number

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)

Mixed 
Viscosity 
(cps)

Density
(g/cc)

Volumetric 
Yield 
(cu. in. / lb.)

Shrink
(in / in)

Compressive 
Strength 
(psi)

Flexural 
Strength 
(psi)

Tensile 
Strength 
(psi)

C.T.E. 
(in / in / °F) *

Deflection 
Temp. (°F)

Tg
(°F)
Freeman 801

100:12

100:23

150

24

86

4,650

1.70

16.3

0.002

12,500

11,590

7,280

3.82 x 10-5

142

-

Freeman 805

100:18

100:29

150

24

88

9,750

1.47

18.8

0.001

17,200

9,600

8,100

-

200

-

RenCast 3269

100:9

100:18

140

24

87

4,300

1.78

15.6

0.001

14,400

13,000

8,700

3.76 x 10-5

-

171


High Temperature Aluminum-Filled Epoxy Casting Resins

Product
Number

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)

Mixed
Viscosity
(cps)

Density
(g/cc)

Volumetric
Yield
(cu. in. / lb.)

Shrink
(in / in)

Compressive
Strength
(psi)

Flexural
Strength
(psi)

Tensile
Strength
(psi)

C.T.E.
(in / in / °F) *

Deflection
Temp. (°F)

Tg
(°F)

Freeman 925

100:8

7.55:1

37

24

90

11,000

1.68

16.48

0.001

40,000

18,000

10,200

-

225

-

RenCast 4036/
Ren 1500

100:6

100:10

60

24

90

20,000

1.69

16.5

0.004

30,000

7,500

6,500

1.90 x 10-5

-

350

RenCast 4036/
Ren 1511

100:13

100:22

140

24

91

15,000

1.58

17.6

0.005

25,800

9,300

6,300

2.25 x 10-5

-

350

RenCast 4037/Ren 4037

100:13

100:22

140-165

24

91

12-18,000

1.58

17.6

0.005

25,800

9,300

6,300

22.2 x 10-5

-

350


Iron-Filled Epoxy Casting Resins

Product
Number

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)

Mixed
Viscosity
(cps)

Density
(g/cc)

Volumetric
Yield
(cu. in. / lb.)

Shrink
(in / in)

Compressive
Strength
(psi)

Flexural
Strength
(psi)

Tensile
Strength
(psi)

C.T.E.
(in / in / °F) *

Deflection
Temp. (°F)

Tg
(°F)

Freeman 855

100:10

100:25

150

24

87

13,950

2.23

12.4

0.001

13,400

9,100

6,800

2.80 x 10-5

230

-

RenCast 3209-1

100:10

100:25

90

24

75

15,000

2.04

13.5

0.005

16,500

8,400

5,500

2.60 x 10-5

163

160

RenCast 3209-2

100:11

100:28

240

24

85

15,000

2.15

12.9

0.006

11,500

8,000

5,000

3.20 x 10-5

120

138

RenCast 3215-2

100:18

100:35

200

24

88

3,600

1.65

16.9

0.001

11,100

7,300

4,900

3.80 x 10-5

132

154

RenCast 3215-3
mix 1

100:30

100:57

70

24

85

6,200

1.54

18

0.002

12,600

6,900

4,300

-

77

120

RenCast 3215-3
mix 2

100:40

100:76

65

24

70

5,400

1.51

18.3

0.002

Soft

300

1,200

-

77

93

RenCast 3215-3
mix 3

100:50

100:95

60

24

45

4,600

1.48

18.7

0.002

Rubbery

Rubbery

300

-

77

N/A

RenCast 3253

100:5

100:16

30

24

90

7,500

2.99

9.3

0.002

15,200

8,500

7,100

3.23 x 10-5

120

169

RenCast 3253-3/
Ren 3269

100:6

100:17

65

24

90

10,500

2.57

10.8

0.0007

14,780

9,020

6,800

2.01 x 10-5

140

-

RenCast 3261

100:5

100:16

25

24

88

35,000

2.94

9.4

0.003

16,500

8,500

6,000

3.00 x 10-5

138

180


Unfilled Epoxy Casting Resins

Product
Number

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)

Mixed
Viscosity
(cps)

Density
(g/cc)

Volumetric
Yield
(cu. in. / lb.)

Shrink
(in / in)

Compressive
Strength
(psi)

Flexural
Strength
(psi)

Tensile
Strength
(psi)

C.T.E.
(in / in / °F) *

Deflection
Temp. (°F)

Tg
(°F)

RenCast 140

100:25

100:30

40

24

80

1,300

1.09

25.4

-

-

-

9,500

-

-

-

ASTM

-

-

D-2471

-

D-2240

D-2393

D-792

D-792

D-2566

D-695

D-790

D-638

D-696

D-648

D-648