Description
Stellite 31 Cobalt Based Alloy Valve Balls
Stellite 31 Cobalt Based Alloy Valve Balls is made from is a hard alloy that can withstand various types of abrasion
and corrosion as well as high temperature oxidation.The cobalt-base alloy was invented by American Elwood Hayness in 1907.
The Stellite alloy has major component of cobalt, containing a considerable amount of nickel, chromium, tungsten and a small amount
of molybdenum, niobium, tantalum, titanium, lanthanum, etc..Occasionally it contains an alloy of iron.According to the composition of the alloy,
they can be made into wire, powder for hard surface surfacing, thermal spraying, spray welding, etc.. It also can be made into cast forging parts and
powder metallurgy parts.
We produce Stellite 31 Cobalt Based Alloy Valve Balls with centrifugal cast process, investment process and resin sand cast process.
Dimensions:as per drawings
Table 1 : Standard Cobalt Stellite Alloy is Below: Stellite 31
| Co | Cr | C | W | Mo | Ni | Si | B | Fe | Mn | Others | |
| STELLITE 1 | BAL | 33 | 2.45 | 13 | – | 2.5* | 1 | – | 2.5* | 1 | – |
| STELLITE 3 | BAL | 31 | 2.5 | 13 | – | 2.5* | 1 | – | 2.5* | 1 | – |
| STELLITE 4 | BAL | 31.5 | 1 | 14 | – | 2.0* | 1 | – | 2.0* | 1 | – |
| STELLITE 6 | BAL | 28 | 1.2 | 5 | – | 3.0* | 1 | – | 2.5* | 1 | – |
| STELLITE 12 | BAL | 29 | 1.85 | 9 | – | 2.5* | 1 | – | 2.5* | 1 | – |
| STELLITE 20 | BAL | 33 | 2.45 | 17.5 | – | 2.5* | 1 | – | 2.5* | 1 | – |
| STELLITE 21 | BAL | 27 | 0.25 | – | 5.5 | 2.5* | 1 | – | 3.0* | 1 | – |
| STELLITE 31 | BAL | 26 | 0.5 | 7.5 | – | 10.5 | 1 | – | 2.0* | 1 | – |
| STELLITE 190 | BAL | 26 | 3.3 | 14 | – | 1.0 | 1 | – | 8.0 | 0.5 | – |
| STELLITE 238 | BAL | 26 | 0.1 | – | 3 | – | 1 | – | 20.0 | 1 | – |
| STELLITE 306 | BAL | 25 | 0.4 | 2 | – | 6.0 | 1 | – | 4.0* | 1 | Nb=5 |
| STELLITE 694 | BAL | 28 | 1 | 19 | – | 5.0 | 1 | – | 2.5* | 1 | V=1 |
| STELLITE F | BAL | 25.5 | 1.75 | 12.25 | – | 22.5 | 1 | – | 1.5* | – | – |
| STELLITE SF1 | BAL | 19 | 1.3 | 13 | – | 13 | 3 | 2.5 | 3* | 0.5 | Cu=0.5 |
| STELLITE SF6 | BAL | 19 | 0.7 | 7 | – | 13 | 2.5 | 1.7 | 3* | 0.5 | Cu=0.5 |
| STELLITE SF12 | BAL | 19 | 1 | 9 | – | 13 | 3 | 2 | 3* | 0.5 | Cu=0.5 |
| STELLITE SF20 | BAL | 19 | 1.5 | 15 | – | 13 | 3 | 3 | 2* | 0.5 | Cu=0.5 |
| TRIBALOY T400 | BAL | 8 | 0.1* | – | 28 | 3* | 2.4 | – | 3* | – | – |
| TRIBALOY T800 | BAL | 17 | 0.1* | – | 28 | 3* | 3.2 | – | 3* | – | – |
| DELORO 15 | – | – | 0.06* | – | – | BAL | 2.0 | 1.05 | 1.5* | 20 | Cu=20 |
| DELORO 22 | – | 0.70 | 0.10 | – | – | BAL | 2.3 | 1.75 | – | – | – |
| DELORO 40 | – | 7.0 | 0.10 | – | – | BAL | 3.5 | 2.25 | – | – | – |
| DELORO 50 | – | 10.25 | 0.45 | – | – | BAL | 4.0 | 1.85 | 4.0 | – | – |
| DELORO 60 | – | 14.25 | 0.6 | – | – | BAL | 2.0 | 3.5 | 4.0 | – | – |
| DELORO 625 | – | 22 | 0.1 | – | 9 | BAL | – | – | 5 | – | – |
| NISTELLE C | – | 16.5 | 0.12* | 4.5 | 17 | BAL | 0.7 | – | 6.0 | – | – |
| TRIBALOY T700 | – | 15 | 0.10* | – | 32 | BAL | 3.25 | – |
Table 2 : Standard For Nickel Alloy as Below: Stellite 31
| Hastelloy C22®(UNS N06022)(Max.) | ||||||||||||
| C | MN | P | S | Si | Cr | Ni | Mo | CO | Fe | W | V | |
| 0.015 | 0.5 | 0.02 | 0.02 | 0.08 | 20.0-22.5 | Bal. | 12.5-14.5 | 2.5 | 2.0-6.0 | 2.5-3.5 | 0.35 | |
| Hastelloy C276®(UNS N10276)(Max.) | ||||||||||||
| C | MN | P | S | Si | Cr | Ni | Mo | CO | Fe | W | V | |
| 0.01 | 1 | 0.04 | 0.03 | 0.08 | 14.5-16.5 | Bal. | 15.0-17.0 | 2.5 | 4.0-7.0 | 3.0-4.5 | 0.35 | |
| Hastelloyx®(UNS N06002)(Max.) | ||||||||||||
| C | MN | P | S | Si | Cr | Ni | Mo | CO | Fe | W | other | |
| 0.05-0.15 | 1 | 0.04 | 0.03 | 1 | 20.5-23.0 | Bal. | 8.0-10.0 | 0.5-2.5 | 17.0-20.0 | 0.2-1.0 | / | |
| Monel 400®(UNS NO4400) (Max.) | ||||||||||||
| C | MN | S | Si | Ni | Cu | Fe | ||||||
| 0.3 | 2 | 0.024 | 0.5 | 63 min | 28-34 | 2.5 | ||||||