254SMO UNS S31254 1.4547 kowiri tira korekore
1. Whakaahuatanga ngawari:
Ko te 254SMO he kowiri tira tino austenitic.
Koeke GB: 00Cr20Ni18Mo6CuN
Koeke o te Ao: 254SMO
Koeke paerewa Amerika: UNS S31254
Koeke EU: W. – Nr 1.4547
Paerewa Amerika: ASTM A240/ASME SA-240, ASTM A276, ASTM A182/ASME SA-182, ASTM A312/ASME A312
Te awhe rahi: 10*2mm ki te 219*15mm kua whakaritea ranei kia rite ki te tono a te kiritaki
Awhe Roa: 300mm ki te 20000mm
2. Hanga matū:
| Kōeke | Matū Whakaranu (Mōrahi%) | ||||||||||
| C | Mn | Si | Mn | P | S | Cr | Ni | Mo | N | Ce | |
| 254SMO | ≤0.02 | ≤1.0 | ≤0.8 | ≤1.0 | ≤0.03 | ≤0.01 | 19.5-20.5 | 17.5-18.5 | 6.0-6.5 | 0.18-0.2 | 0.03-0.08 |
3. Āhuatanga Miihini:
| Kōeke | Taonga Miihini | ||
| Te Kaha Tuku (N/mm2)/(Mpa) | Te Kaha Tana (N/mm2)/(Mpa) | Whakaroa (%) | |
| 254SMO | ≥300 | ≥650 | ≥35 |
4. 254SMO Whakaahuatanga:
a. Ko te 254SMO he kowiri tira austenitic. Na te nui o te ihirangi molybdenum, he tino kaha te aukati ki te waikura
me te waikura kapiti.
b. Ko tenei momo kowiri tira ka hangaia hei whakamahi i nga taiao e mau ana i te hauwai penei i te wai moana. He pai hoki a 254SMO
ātete ki te waikura ōrite.
c. Ina koa i roto i te waikawa e mau ana i te halide, he pai ake te maitai ki te kowiri tira noa. Ko tona ihirangi C he<0.03%, no reira ka kiia
parakore austenitic kowiri tira (<0.01% ka kiia hoki super austenitic kowiri tira). Super kowiri tira ko te momo o motuhake kowiri tira.
d. Tuatahi, he rereke mai i te kowiri tira noa i roto i te hanganga matū. E tohu ana ki te ahua o te kowiri tira teitei
kei roto i te nickel teitei, te chromium teitei me te molybdenum teitei. Ko te mea tino rongonui ko 254SMo kei roto 6% Mo tenei momo maitai
he tino pai te parenga waikura o te rohe.
e. He pai te parenga waikura pitting (PI ≥ 40) me te awangawanga waikura i raro i nga tikanga o te wai moana, te hau, te kapiti.
me te whiu iti-tere.
f. He rauemi whakakapi mo te koranu turanga Ni me te koranu Titanium. Tuarua, i runga i nga ahuatanga o te pāmahana teitei, te aukati waikura ranei,
he pai ake te atete teitei o te pāmahana, te aukati waikura ranei, he kore e taea te whakakapi mo te 304 kowiri tira. I tua atu,
mai i te whakarōpūtanga o te kowiri tira, ko te hanganga konganuku o te kowiri tira motuhake he hanganga whakarewa austenitic pumau.
g. I te mea ko tenei kowiri tira motuhake he rauemi koranu teitei, he tino uaua tana mahi whakangao. Ko te tikanga, ka taea e te tangata te whakawhirinaki anake
nga tikanga tuku iho ki te hanga i tenei kowiri tira motuhake, penei i te ringihanga, te hanga, te hurihuri, aha atu.
5. Taupānga:
1) Nga moana: nga hanganga moana o te taiao o te moana, te whakahekenga o te wai moana, te mariculture, te whakawhiti wera o te moana, me etahi atu.
2) Te whakamarumaru Taiao: te taputapu whakangao hau rewharewha mo te whakangao hiko waiariki, te maimoatanga wai para, aha atu.
3) Pungao: te hanga hiko ngota, te whakamahi matawhānui o te waro, te hanga hiko tai, aha atu.
4) Te ahumahi matū: te hinu hinu, nga taputapu matū, me etahi atu.
5) Te mara kai: te hanga tote, te mahi ranu soy, etc.
6) Te taiao pūhaumāota kukū teitei: ahumahi pepa, ngā momo taputapu hātea.
6. He maimoatanga atu:
1) Porowini
2) Tohu:
3) Tapeke:
7. Ipu Uta:
