|
Material Number |
112 |
113 |
114 |
118 |
238 |
248 |
301 |
397 |
398 |
400 |
|
DESCRIPTION AND STRUCTURE *EI DuPont Reg. Trademark |
Laminated Medium Weave Cotton Fabric |
Laminated Medium Weave Cotton Fabric with Graphite |
Laminated Heavy Weave Cotton Fabric |
112 with Laminated Teflon* Cloth |
Macerated Fine Cotton Fabric |
Laminated Cotton Fabric with Moly |
Laminated Medium Weave Cotton Fabric with Teflon* |
Laminated Glass Fiber Fabric |
Laminated Glass Fiber Fabric with Graphite Similar to 125 Grafitex-A |
Laminated Glass Fiber Fabric with Teflon* |
|
AVERAGE MECHANICAL PROPERTIES |
||||||||||
Tensile (psi) |
12000 |
11000 |
12000 |
12000 |
7000 |
7000 |
9500 |
17000 |
16500 |
16500 |
Compressive (psi) |
38000 |
36000 |
33500 |
38000 |
25000 |
41000 |
37000 |
47000 |
46500 |
46000 |
Shear (psi) |
10000 |
10000 |
10000 |
10000 |
6000 |
8000 |
8000 |
12500 |
12500 |
12500 |
Flexural (psi) |
15000 |
15000 |
17500 |
15000 |
14000 |
14000 |
15000 |
16700 |
16500 |
16700 |
Hardness (Rockwell M) |
93 |
92 |
92 |
90 |
115 |
85 |
90 |
103 |
103 |
101 |
Impact (Izod) |
5.7 |
5.7 |
5.7 |
5.7 |
2.2 |
3.2 |
5 |
9.9 |
9.8 |
9.9 |
|
AVERAGE PHYSICAL PROPERTIES |
||||||||||
Density (oz/In^3) |
.788 |
.787 |
.73 |
.78 |
.788 |
.787 |
.789 |
.820 |
.820 |
.82 |
Specific Gravity |
1.370 |
1.380 |
1.360 |
1.370 |
1.370 |
1.380 |
1.370 |
1.430 |
1.430 |
1.43 |
|
Coeffieciant of Friction** |
||||||||||
Elastic Modulus |
850,000 |
850,000 |
900,000 |
850,000 |
1,000,000 |
850,000 |
800,000 |
1,100,000 |
1,000,000 |
1,100,000 |
Coeff.Therm.Expans,("/°F) |
1.3 x 10^4 |
1.3 x 10^5 |
1.3 x 10^5 |
1.3 x 10^5 |
1.95 x 10^5 |
1.3 x 10^5 |
1.3 x 10^5 |
1.0 x 10^5 |
1.0 x 10^5 |
1.0 x 10^5 |
Thermal Conductivity |
.29 |
.29 |
.27 |
.29 |
1.94 |
.29 |
.29 |
.21 |
.23 |
.21 |
Dielectric Strength (V/mil) |
50 to 400 |
30 to 300 |
50 to 400 |
50 to 400 |
180 to 300 |
10 to 150 |
50 to 400 |
10 to 200 |
10 to 150 |
10 to 150 |
Step by Step |
30 to 275 |
20 to 200 |
30 to 275 |
30 to 275 |
100 to 270 |
10 to 100 |
30 to 275 |
10 to 100 |
10 to 75 |
10 to 75 |
Moisture Absorbtion (%) |
1.5 |
1 |
.8 |
1 |
2.2 |
1.2 |
1.5 |
.62 |
.62 |
.62 |
|
GENERAL APPLICATION DATA |
||||||||||
Similar to NEMA or ASTM Grade |
C |
CG |
C |
G-3 |
G-3 |
G-3 |
||||
PV (Dry)*** |
20000 |
35000 |
20000 |
80000 |
20000 |
60000 |
80000 |
30000 |
40000 |
80000 |
PV (Water Lubricated)*** |
75000 |
100000 |
75000 |
130000 |
75000 |
120000 |
130000 |
80000 |
100000 |
130000 |
Chemical Resistance (Immersed) |
Fair |
Fair |
Fair |
Good |
Fair |
Fair |
Good |
Excellent |
Excellent |
Excellent |
Recommended PH Range |
4 to 9 |
4 to 9 |
4 to 9 |
3.7 to 9 |
5 to 8 |
5 to 8 |
4 to 9 |
2 to 11 |
2 to 11 |
2 to 11 |
Temperature Range (°F) |
-80 to 250 |
-80 to 250 |
-80 to 250 |
-80 to 250 |
-100 to 330 |
-80 to 230 |
-80 to 250 |
-80 to 550 |
-80 to 550 |
-80 to 550 |
Poisson's Ratio |
.4 |
.4 |
.4 |
.4 |
.4 |
.4 |
.4 |
.4 |
.4 |
.4 |
NOTE: We believe that the information in this guide to be the best currently available and is offered as such. Scan-Pac makes no guarantee of results and assumes no obligation or liability whatsoever for this data.
**Static: 0.2 to 0.5, Dynamic: 0.1 to 0.3
***PV values (psi X fpm) are an approximate guide only and material suitability should be verified through testing under actual working conditions. Speed is a more critical factor than load. Higher speeds generate more heat which must be dissipated by lubreication since the materials are all heat insulators. For static loading use a safety factor of 3. Therefore, design loading should not exceed 1/3 of the compressive strength.
Gatke tube is available in diameters from 1/2" to 35". Flat sheet is available in sizes up to 30" X 60" and in thickness from 1/16" to 4". Multiple sheets can also be bonded together if larger thicknesses are needed.
Application data required for specifying Gatke material: |
Recommended finish of mating surfaces: |