Alloy 686 ndi gawo limodzi, austenitic Ni-Cr-Mo-W alloy yomwe imapereka kukana kwa dzimbiri m'malo osiyanasiyana ovuta.Nickel yake yapamwamba (Ni) ndi molybdenum (Mo) imapereka kukana bwino pakuchepetsa mikhalidwe, ndipo chromium yapamwamba (Cr) imapereka kukana kwa oxidizing media.Molybdenum (Mo) ndi tungsten (W) zimathandizira kukana kudzimbiri komweko monga kuponya.Iron (Fe) imayendetsedwa bwino kuti iwonjezere katundu.Mpweya wochepa (C) umathandizira kuchepetsa kugwa kwa m'malire a tirigu kuti zisawonongeke ndi kutentha m'malo olumikizirana ndi kutentha.
Aloyi | % | Fe | Cr | Ni | Mo | Mg | W | C | Si | S | P | Ti |
686 | Min. | - | 19.0 | bwino | 15.0 | - | 3.0 | - | - | - | - | 0.02 |
Max. | 2.0 | 23.0 | 17.0 | 0.75 | 4.4 | 0.01 | 0.08 | 0.02 | 0.04 | 0.25 |
Kuchulukana | 8.73g/cm³ |
Malo osungunuka | 1338-1380 ℃ |
Mkhalidwe | Kulimba kwamakokedwe Rm N/mm² | Zokolola mphamvu Rp 0. 2N/mm² | Elongation Monga% |
Yankho mankhwala | 810 | 359 | 56 |
Chipinda / ndodo | Waya | Mzere / Coil | Mapepala/Mbale | Pipe/Tube | Kupanga | Zomangira |
ASTM B 462, ASTM B 564 ASME SB 564, ASTM B 574 DIN 17752 | ASTM B462 ASTM B564 ASTM B 574 DIN 17752 | ASTM B 575 ASTM B 906 ASME SB 906 DIN 17750 | ASTM B 575 ASTM B 906 DIN 17750 | ASME SB163,ASTM B 619 ASTM B 622 ASTM B 626 ASTM B751 ASTM B 775 ASME SB 829 | ASTM B 462, ASTM B 564 ASME SB 564,ASTM B 574 ASME B 574,DIN 17752 | ASTM F 467/ F 468/ F 468M;SAE/AMS J2295, J2271, J2655, J2280 |
1.Kukana kwabwino pakuchepetsa mikhalidwe;
2.Good kukana oxidizing TV;
3.Kukaniza kwambiri, kuphulika kwa mapiko ndi mng'oma kumawonjezeka.
media media pokonza mankhwala, kuwongolera kuipitsidwa, kupanga zamkati ndi mapepala, komanso kugwiritsa ntchito zinyalala.