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USG® Plaster
and Gypsum Cements Specifications
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the print-friendly version (pdf)
Note: All product
titles link to the respective product pages
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Mix
Ratio
Parts Water
By Wt. Per
100 Parts
Plaster |
Set
Time
(Min.) |
%
Setting
Expansion
Max. |
Approx.
Density
(lb./ft.3)
Wet |
Approx.
Density
(lb./ft.3)
Dry |
Compressive
Strength (psi)
Dry |
USG
Gypsum Cements |
Ultracal
30 |
38 |
25-35 |
0.08 |
115.00 |
99.00 |
6,000 |
Ultracal
60 |
39 |
75-90 |
0.07 |
114.40 |
97.50 |
5,000 |
Hydrocal
A-11 |
42 |
16-20 |
0.12 |
112.50 |
93.80 |
5,500 |
Hydrocal
B-11 |
44 |
25-35 |
0.11 |
111.20 |
91.60 |
4,500 |
White
Hydrocal |
45 |
25-35 |
0.39 |
110.60 |
90.00 |
5,000 |
Hydrocal
FGR-95 |
30 |
50-70 |
- |
112.0 |
101.6 |
- |
Med.-Hi
Expansion |
48 |
25-35 |
1.05 |
108.70 |
- |
- |
Hydrostone |
32 |
17-20 |
0.24 |
119.40 |
108.70 |
10,000 |
USG
Industrial Plasters |
Moulding
Plaster |
70 |
27-37 |
0.20 |
99.00 |
69.00 |
2,000 |
#1
Casting Plaster |
65 |
27-37 |
0.22 |
100.00 |
72.50 |
2,400 |
#1
Pottery Plaster |
70 |
27-37 |
0.21 |
99.00 |
69.00 |
2,400 |
Lab
Dental Plaster |
70 |
6-9 |
- |
99.00 |
69.00 |
2,000 |
Puritan
Pottery Plaster |
66 |
27-37 |
0.22 |
100.50 |
72.50 |
2,400 |
Duramold |
62 |
27-37 |
.220 |
102.0 |
75.0 |
2,900 |
Superfine
Casting |
65 |
27-37 |
.210 |
100.0 |
72.5 |
2,400 |
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