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| C-454 |
Disintegration of Carbon Refractories By Alkali. T9540 |
Ten 2" cube specimens are required by ASTM. A 1" hole is drilled into the face of each specimen and filled with 8 gm of Potassium Carbonate. the effects of being fired at 1750°F for 5 hours are determined visually. |
| C-559 |
Bulk Density By Physical Measurements of Manufactured Carbon And Graphite Articles. T9556 |
the bulk density is determined using the specimen weight and dimensions. |
| C-561 |
Ash In A Graphite Sample. T9558 |
Ash content of graphite samples is determined by oxidation at 950°C. the ash content for two representative samples per type/brand is determined. |
| C-611 |
Electrical Resistivity of Manufactured Carbon And Graphite Articles At Room Temperature. T9585 |
Electrical resistivity of carbon and graphite materials is determined by DC, as well as AC, methods. Specimens may be in the form of plates, rods, bars, or tubes. |
| C-651 |
Flexural Strength of Manufactured Carbon And Graphite Articles Using Four-Point Loading At Room Temperature. T9587 |
Flexural strength is determined in four-point bending on specimens of rectangular cross-section. |
| C-695 |
Compressive Strength of Carbon And Graphite. T9588 |
the compressive strength is determined on a right cylinder. the diameter of the specimen must be ten times the maximum particle size and the ratio of height to diameter must be between 1.9 and 2.1. |
| C-747 |
Modulus of Elasticity And Fundamental Frequencies of Carbon And Graphite Materials By Sonic Resonance. T9600 |
Resonant frequencies are determined by a non-destructive sonic method in the flexural and torsional modes on prism or rod specimens. Moduli are calculated from the resonant frequency, mass, and dimensions. |
| C-767 |
Thermal Conductivity of Carbon Refractories. T9610 |
The heat flow through a refractory is determined with a water-cooled copper calorimeter. the temperature limit of refractory must be specified, as well as the hot face or mean test temperatures desired. the maximum hot face temperature for testing is 2700¡F. the specimens required are six 9" bricks or an 18" x 13.5" x 2.5" slab. |
| C-769 |
Sonic Velocity In Manufactured Carbon And Graphite Materials For Use In Obtaining An Approximate Young's Modulus. T9620 |
Approximation of Young's Modulus is calculated through sonic velocity measurements in 3 directions. the velocity of sound waves is measured using a James V-meter. |
| C-838 |
Bulk Density of As-Manufactured Carbon And Graphite Shapes. T9660 |
Bulk density is calculated from weight and volume measurements. |
| C-1025 |
Modulus of Rupture In Bending of Electrode Graphite. T9747 |
Flexural strength is determined in four-point bending on 6" x 1 1/2" x 1 1/2" specimens. |
| C-1039 |
Apparent Porosity, Apparent Specific Gravity, And Bulk Density of Graphite Electrodes. T9748 |
A vacuum is used to determine the apparent porosity, bulk density, liquid absorption, and apparent specific gravity. Testing of five specimens (2" diameter x 7 1/2" high) per type/brand is suggested by ASTM. |
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