Category: Equipment for Standards

5 Apparatus5.1 Constant-Temperature Liquid Bath, capable of controlling accurately to ±0.5°C.5.1.1 The liquid for the bath should not plasticize or react with the specimens. Poly(ethylene glycol), glycerin, and water have been found to have wide applicability.5.2 Thermometer—ASTM Thermometer 1 °C conforming to the requirements as prescribed in Specification E 1.5.3 Square Metal Stamp, 100 by…

General Methods5.1 Except as otherwise specified in these test methods for rubber O-rings, the following ASTM test methods applicable in general to vulcanized rubber, shall be complied with as required and are hereby made a part of these test methods:5.1.1 Tension Test—Test Methods D 412.5.1.2 Compression Set—Test Methods D 395.5.1.3 Low Temperature—Test Method D 1329.5.1.4…

5 Apparatus5.1 Pendulum Impulse-Type Testing Apparatus, 5 consisting of the following:5.1.1 Stationary Clamp.5.1.2 Movable Clamp, carried on a pendulum, preferably formed by a sector of a wheel or circle, free to swing on a ball bearing or other substantially frictionless bearing. 5.1.3 Stop Catch, for holding the pendulum in a raised position and for releasing…

5 Apparatus5.1 Testing Machines—Machines used for tension testing shall conform to the requirements of Practices E 4. The forces used in determining tensile strength and yield strength shall be within the verified force application range of the testing machine as defined in Practices E 4.5.2 Gripping Devices:5.2.1 General—Various types of gripping devices may be used…

6 Apparatus6.1 Differential Scanning Calorimeter—As a minimum requirement, the thermal analysis equipment shall be capable of measuring heat flow of at least 10 mW full scale. The instrument recorder shall be capable of displaying heat flow or temperature differential on the y-axis and time on the x-axis. The time base must be accurate to 61…

4 PrincipleA pipe of specified length is placed in a liquid bath or air oven at a specified temperature for a specified time .A marked length of this portion of pipe is measured, under identical conditions, before and after heating. The reversion is calculated as a percentage of the change in length in relation to…