Tu'aiga 347 (UNS S34700) ile paipa fa'a'au'au
Fa'amatalaga
347 uamea uamea vili paipa
Ituaiga 347 o se niobium stabilized chromium nickel austenitic uʻamea uʻamea ma corrosion tetee tutusa ma le 304/304L.O lenei vasega e masani ona faʻaaogaina i le 800-1500˚F le maualuga o le vevela lea e faʻamautu ai i le chromium carbide precipitation e ala i le faʻaopoopoina o le niobium, lea e mafua ai le timu o niobium carbide.O le ituaiga 347 e sili ona lelei le tete'e atu i le corrosion intergranular pe a uma ona fa'aalia i lenei va'aiga vevela, ma o lenei vasega e tete'e i fa'ama'i e o'o atu i le 1500˚F ma e maualuga atu le fetolofi ma fa'alavelave male fa'alavelave nai lo le 304/304L.O lo'o i ai fo'i le malosi maualalo maualalo o le vevela ma e le fa'amaneta i le tulaga fa'afefe.
347 uamea uamea vili paipa
Fa'asu'esu'ega o vaila'au
Fa'ainumera Fa'agata (wt%) tapula'a e pei ona fa'amaoti mai ile ASTM A240 ma le ASME SA240*.
| Elemene | 347 |
| kaponi | 0.08 |
| Chromium | 17.0-19.0 |
| Nikeli | 9.0-13.0 |
| Manganese | 2.00 |
| Silicon | 0.75 |
| Phosphorus | 0.045 |
| Sulfur | 0.030 |
| Niobium | 10 x C min / 1.00 maualuga |
Meatotino Fa'ainisinia347 uamea uamea vili paipa
Manaoga o meatotino fa'ainisinia mo oloa fa'apipi'i e pei ona fa'amaonia ile ASTM A240 ma le ASME SA240.
| Meatotino | 347 |
| Malosi o le Manuia, min.(ksi) | 30 |
| Malosi Tetele, min.(ksi) | 75 |
| Fa'aumiumi, min.(%) | 40 |
| Malosi, maualuga.(Rb) | 92 |
Meatotino Faaletino
Mea fa'aletino mo le ituaiga 347 u'amea u'amea
| Meatotino | 347 Fa'amaumauga |
| Malosi, lb/in3 | 0.288 |
| Modulus o Elasticity, psi | 28.0 x 106 |
| Coefficient o le Fa'alauteleina o le vevela, 68-212˚F, /˚F | 9.3 x 10-6 |
| Amioga vevela, Btu/ft hr ˚F | 9.2 |
| Avela Fa'apitoa, Btu/lb ˚F | 0.12 |
| Tete'e eletise, Microohm-i totonu | 28.4 |
Tulaga
Tulaga masani mo le ituaiga 347 uamea u'amea
| 347 |
| ASTM A240 |
| ASME SA240 |
| AMS 5512 |
Taimi meli: Apr-22-2023