Comparative Compositions
| ALLOYS | NOMINAL CHEMISTRIES |
PHYSICAL PROPERTIES |
||||||||||||
| Cobalt | Spec. | C | Mn | Si | Ni | Cr | W | Mo | Fe | Co | B | Rc. | Liquidus | Lbs/in³ |
| #6 | RCoCr-A | 1.2 | .2 | 1.5 | 1.5 | 29 | 4.5 | .5 | 1.5 | Bal. | -- | 38-46 | 2440ºF | .303 |
| #12 | RCoCr-B | 1.6 | .2 | 1.5 | 1.5 | 29 | 8 | .5 | 1.5 | Bal. | -- | 46-52 | 2350ºF | .313 |
| #1 | RCoCr-C | 2.5 | .2 | 1.5 | 1.5 | 30 | 12 | .5 | 1.5 | Bal. | -- | 53-59 | 2275ºF | .316 |
| #612 | N/A | - | - | - | - | - | - | - | - | - | - | - | - | - |
| #20 | N/A | 2.5 | .2 | 1.5 | 2.5 | 32 | 17 | -- | 1.5 | Bal. | -- | 58 | - | .328 |
| HC-1 | N/A | 3.5 | .2 | 1 | 1 | 28 | 14 | .5 | 1.5 | Bal. | - | 58-62 | 2200ºF | .316 |
| #21 | AMS 5385 | .3 | .5 | .6 | 2.5 | 27 | -- | 5.5 | 1 | Bal. | -- | 30-43 | 2480ºF | .299 |
| #25 | N/A | .1 | 1.5 | 1 | 10 | 20 | 15 | .5 | 1.5 | Bal. | -- | 24 | 2500ºF | .333 |
| #694 | PWA | .8 | .2 | 1 | 5 | 28 | 19 | -- | 1.5 | Bal. | .01 | 45 | 2300ºF | .34 |
| T400 | N/A | .1 | -- | 2.4 | 1 | 8 | -- | 28 | 1 | Bal. | -- | 51 | - | - |
| T800 | N/A | .1 | -- | 3.2 | 1 | 17 | -- | 28 | 1 | Bal. | -- | 53 | - | - |
| Nickel | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| SP44 | RNiCr-A | .4 | -- | 2.0 | Bal. | 10 | -- | -- | 2.5 | -- | 1.7 | 35-40 | 1800ºF | .309 |
| SP45 | RNiCr-B | .5 | -- | 3.0 | Bal. | 12 | -- | -- | 3.0 | -- | 2.4 | 45-50 | 1850ºF | .299 |
| SP56 | RNiCrB/C | .6 | -- | 3.3 | Bal. | 12.5 | -- | -- | 3.3 | -- | 2.7 | 50-55 | 1875ºF | .297 |
| SP46 | RNiCr-C | .8 | -- | 3.8 | Bal. | 14 | -- | -- | 3.8 | -- | 3.0 | 56-62 | 1900ºF | .297 |
| "C" | AMS 5388 | .06 | .5 | 1 | Bal. | 16.5 | 4.25 | 17 | 6 | 2 | v-.4 | 12 | 2350ºF | - |
