Table III
Schedule of Casting Tests with Pt-5%Cu and Pt-5%Ru, in Duplicate Pairs, Except Where Indicated
| Investment | Alloy | Melt, ºC | Flask, ºC | Centrifuge, rpm | No. of tests |
|---|---|---|---|---|---|
| Wirovest | Pt-5%Cu Pt-5%Cu Pt-5%Cu Pt-5%Cu |
2050 2050 2050 2050 |
940 600 300 950 |
600 600 600 1200 |
2x 2x 2x 2x |
| Pt-5%Ru | 1950 | 950 | 600 | 2x | |
| Astro-Vest | Pt-5%Cu Pt-5%Cu Pt-5%Cu Pt-5%Cu Pt-5%Cu Pt-5%Cu |
1850 1850 1850 1850 1850 1850 |
870 870 600 300 870 870 |
800 900 900 900 1000 1200 |
1x 2x 2x 2x 2x 2x |
| Pt-5%Ru Pt-5%Ru Pt-5%Ru Pt-5%Ru Pt-5%Ru Pt-5%Ru |
2050 2050 2050 2050 2050 2050 |
870 870 600 300 870 870 |
800 900 900 900 1000 1200 |
1x 2x 2x 2x 2x 2x |
|
| Platincast | Pt-5%Cu Pt-5%Cu Pt-5%Cu Pt-5%Cu Pt-5%Cu Pt-5%Cu Pt-5%Cu |
1850 1850 1850 1850 1850 1850 1850 |
900 600 300 900 600 300 900 |
600 600 600 800 800 800 1000 |
2x 2x 2x 6x 2x 2x 2x |
| Pt-5%Ru Pt-5%Ru Pt-5%Ru Pt-5%Ru Pt-5%Ru Pt-5%Ru Pt-5%Ru Pt-5%Ru Pt-5%Ru |
2050 2050 2050 2050 2050 2050 2050 1950 2000 |
900 600 300 900 600 300 900 600 900 |
600 600 600 800 800 800 1000 600 1000 |
2x 2x 2x 6x 2x 2x 13x 2x 4x |