Duplex UNS S31803
Duplex UNS S31803 Fa'amatalaga Fa'atekinisi
Vaaiga lautele
O le Duplex o se austenitic ferritic Iron Chromium-Nickel alloy faatasi ai ma le faaopoopoga Molybdenim. E lelei le tete'e atu i pitting, maualuga malosi ma'a'a ma maualuga atu tete'e i fa'amamafa u'amea ta'e i tau feololo i le austenitic uamea u'amea masani.
O le Duplex o se mea e tutusa le aofaʻi o austenite ma ferrite. O nei mea e tuʻufaʻatasia lelei le faʻafefeteina ma le malosi maualuga. O meatotino fa'ainisinia e tusa ma le fa'aluaina o u'amea austenitic tu'utasi ma le tete'e atu i fa'amamafa fa'ama'i e sili atu nai lo le ituaiga 316 u'amea u'amea i vaifofo chloride. O mea fa'apipi'i e iai se suiga fa'alelei / ma'ale'ale pe a ma le -50°C. O le fa'aogaina o le vevela e masani lava ona fa'atapula'aina i le maualuga o le vevela o le 300°C mo le fa'aogaina e le fa'agata ona o le fa'aleagaina.
Faamanuiaga
E tele faʻamanuiaga o le Duplex e aofia ai:
Malosi Maualuga
Tete'e maualuga i pitting, crevice corrosion tetee
Le maualuga tete'e i le fa'apopoleina ta'e, vaivai ma tafia
E sili atu le tetee i le Chloride stress corrosion ta'e
Faʻalauteleina le vevela maualalo ma maualuga atu le vevela nai lo uʻamea Austenitic
Malosi maualuga absorption
Lelei lelei galuega ma uelo
Talosaga
Paipa – ASTM A790
O le auala o le gaosiga e mafai ona faʻaogaina poʻo le faʻapipiʻiina otometi, e aunoa ma se faʻaopoopoga o uʻamea faʻatumu. E mafai ona vevela pe malulu le paipa ae e tatau lava ona faʻapipiʻiina i se tulaga vevela.
UIGA UIGA – ASTM A815
O lenei vasega e aofia ai le vasega o le WP, e aofia ai vaega e 4 ma faʻamalieina manaʻoga o le ANSI B16.9. O fua fa'atatau o le mamafa o le tutusa tutusa o le paipa tutusa.
Vaega:-
WP-S : Fausiaina Lega
WP-W : Fausia Faumea lea e fa'aili ai le leitio
WP-WX : Fausia uelefea lea o lo'o fa'aili uma ai le leitio
WP-WU : Fausia uelefea lea e su'e ai le Ultrasonically Tested.
Flanges ASTM A182
O fa'amatalaga a le ASTM e fa'atulafonoina mea mata'utia fa'amaonia e mafai ona fai mai ai flanges. Fa'aigoa pe ta'avale u'amea paipa paipa, mea fa'apipi'i ma alatoto mo fa'aoga maualuga le vevela.
Valves ASTM A890 Vasega 5A
Fa'amatalaga Fa'ata'atia mo Tu'u, lron-Chromium-Nickel-Molybdenum Corrosion-
Tetee, Duplex (Austenitic/Ferritic) mo Talosaga Lautele'
Fa'amatalaga Fa'apitoa
CHEMICAL COMPOSITION (O tau uma e maualuga se'i vagana ua ta'ua ese)
| %C | %Cr | %I totonu | %Mo | %Mn | %S | %P | %Ma | %N |
| 0.03 | 21.0-23.0 | 4.5-6.5 | 2.5-3.5 | 2.00 | 0.02 | 0.03 | 1.00 | 0.08-0.2 |
MESINIA MESINIA
| Malosi e maua | Malosi Tetele | Fa'aumi (Laiti) | Fa'aitiitiga o le Avanoa (Laiti) | Ma'a'a (Ma'a'a)* |
| Ksi/Mpa | Ksi/Mpa | BHN | ||
| 65/450 | 60/620 | 20 | 290 |
*(NACE MR-01-75 toe teuteuga lata mai e mafai ona faʻatapulaʻaina le maaa i nisi o talosaga)
PREn (PITTING RESISTANCE E TUTUSA) – (%Cr) + (3.3 x %Mo) + (16 x %N)
TULAFONO O LE AVELA: SOLUTE FA'AI'I I LE 1020 DEG C – 1100 DEG C WATER QENCH.
VAEGA TUTUSA +
| US | BS EN | SWEDEN SS | SAMANIA DIN | FARANI AFNOR | SANDVIK |
| 31803 | 1.4462 | 2377 | X2 CrNiMoN 22.5.3 | Z2 CND 22.05.03 | SAF 2205 |
Taimi meli: Aukuso-11-2022