Epoxy Casting Resins Specifications

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Mix Ratio
(by wt.)
Mix Ratio
(by vol.)
Gel Time
(min.) @ 72°F
Demold 
Time (hr.) 
@ 72°F
Hardness 
(Shore D)
Mixed Viscosity (cps)
Density
(g/cc)
Volumetric Yield
(in.3/lb.)
Shrink
(in./in.)
Compressive
Strength (psi)
Flexural
Strength 
(psi)
Tensile
Strength 
(psi)
     C.T.E.     
(in./in./°F)
Deflection
Temp. (°F)
Tg (°F)
Room Temperature Aluminum-Filled Epoxy Casting Resins
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
–
7:1
–
85
24
83
6,000
1.83
15.2
0.005
10,150
8,300
4,000
2.70 x 10-5
128
–
100:18
100:29
150
24
88
9,750
1.47
18.8
0.001
17,200
9,600
8,100
–
200
–
100:9
100:18
140
24
88
4,300
1.78
15.6
0.001
14,400
13,000
8,700
3.76 x 10-5
-
171
100:9
-
60-90
16
91
9,000
1.54
17.9
-
22,000
8,000
-
-
-
-
9:1
5:1
75
16
85
20,000
1.58
17.5
0.0009
9,820
7,180
-
5.00 x 10-5
250
–
High Temperature Aluminum-Filled Epoxy Casting Resins
100:6
9.25:1
45
24
89
18,000
1.63
16.9
0.002"
35,000
11,500
6,800
2.10 x 10-5
355
–
100:7
8:1
200
24
89
18,000
1.63
16.9
0.002"
36,300
11,200
6,600
2.11 x 10-5
355
–
100:8
100:13
37
24
90
11,000
1.68
16.5
0.001
40,000
18,000
10,200
-
225
–
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
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
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
Iron-Filled Epoxy Casting Resins
100:10
100:26
85
24
85
20,000
2.24
12.4
0.001
14,600
7,800
6,100
–
135
–
12:1
1.5:1
240
24
85
35,000
2.27
12.2
0.001
12,600
7,400
5,400
–
123
–
100:10
4.25:1
90
24
90
Thixotropic
2.28
12.1
0.001
14,600
9,253
4,605
2.13 x 10-6
168
–
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
–
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
165
–
100:11
100:28
240
24
85
15,000
2.15
12.9
0.003
11,500
8,000
5,000
3.20 x 10-5
120
–
100:30
100:57
70
24
85
6,200
1.54
18
0.002
12,600
6,900
4,300
-
77
–
100:40
100:76
65
24
70
5,400
1.51
18.3
0.001
Soft
300
1,200
-
77
-
100:50
100:95
60
24
45
4,600
1.48
18.7
0.002
Rubbery
Rubbery
300
-
77
-
100:5
100:16
100
24
90
7,500
2.99
9.3
0.002
15,200
8,500
7,100
3.23 x 10-5
120
–
100:6
100:16
25
24
88
42,500
2.94
9.4
0.003
16,500
8,500
6,000
3.00 x 10-5
138
–
Unfilled Epoxy Casting Resins
100:33
2.8:1
65
24
80
940
1.08
25.6
–
15,000
–
5,300
–
200
–
100:25
100:30
40
24
80
1,300
1.09
25.4
–
–
–
9,500
–
–
–
9:1
3:1
45
16
85
42,500
2.10
13.1
0.001
10,200
7,480
2,800
3.80 x 10-5
–
–
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

 

 * Indicates heated post cure