MTS Model 680-01 High-Temperature Grips - Manual (Page 34)

Model 680.01 High-Temperature Grips 34
Grip Force Rating versus Specimen Temperature
Force versus hydraulic
pressure
The horizontal scale at the bottom of the graph shows required gripping pressure
versus maximum force to be applied, which is shown on the left hand vertical
scale.
The right hand vertical scale is provided as a convenience. Assuming that the
gage portion of the specimen has a diameter of 0.25 inches, the right hand scale
shows maximum engineering stress (for a 0.25 inch diameter specimen), versus
required gripping pressure on the bottom horizontal scale and also the equivalent
force on the left hand vertical scale.
Required Pressure for the Applied Force
Specimen Temperature
66.7 kN up to 700º C
(15 kip up to 1292º F)
8.9 kN at 1000º C
(2 kip at 1832º F)
1038º C
(1900º F)
482º C
(900º F)
0 kN
(0 kip)
66.7 kN
(15 kip)
•
•
Load