304 uʻamea uʻamea o se mea masani i uʻamea uʻamea, ma le mamafa o le 7.93 g/cm³; e taʻua foi 18/8 uʻamea uʻamea i le alamanuia, o lona uiga o loʻo aofia ai le sili atu i le 18% chromium ma sili atu i le 8% nickel; e teteʻe i le maualuga o le vevela o le 800 ℃, e lelei le gaosiga o gaioiga ma maualuga le malosi, ma e faʻaaogaina lautele i fale gaosi oloa ma meaafale teuteuga ma meaʻai ma falemaʻi. Ae ui i lea, e tatau ona maitauina o le faʻasinomaga o meaʻai-grade 304 stainless steel e sili atu le faʻamalosi nai lo le masani 304 stainless steel. Mo se faʻataʻitaʻiga: o le faʻauigaga faʻavaomalo o le 304 stainless steel o loʻo aofia ai le 18% -20% chromium ma le 8% -10% nickel, ae o meaʻai-grade 304 stainless steel o loʻo i ai le 18% chromium ma le 8% nickel, e mafai ai ona fesuiaʻi i totonu o se tasi. lautele ma faʻatapulaʻaina mea o loʻo i totonu o uʻamea mamafa eseese. I se isi faaupuga, 304 uʻamea uʻamea e le o meaʻai-grade 304 uamea stainless.
O metotia faʻailoga masani i luga o le maketi e aofia ai le 06Cr19Ni10 ma le SUS304, o le 06Cr19Ni10 e masani ona faʻaalia ai le gaosiga o le atunuʻu, o le 304 e masani ona faʻaalia le gaosiga o le ASTM, ma le SUS304 o loʻo faʻaalia ai le gaosiga masani a Iapani.
304 o se u'amea u'amea lautele, lea e masani ona fa'aaogaina i le gaosiga o meafaigaluega ma vaega e mana'omia ai le fa'atinoga lelei atoatoa (tete'e ma le fa'aogaina). Ina ia fa'atumauina le fa'aleagaina o le sila, e tatau ona sili atu i le 18% chromium ma sili atu i le 8% nickel le sila. 304 u'amea u'amea o se vasega o u'amea u'amea gaosia e tusa ai ma le tulaga American ASTM.
Meatotino faaletino:
Malosi fa'amalosi σb (MPa) ≥ 515-1035
Malosi fa'atupu fa'atatau σ0.2 (MPa) ≥ 205
Fa'aumi δ5 (%) ≥ 40
Fa'aitiitia vaega ψ (%)≥?
Malosi: ≤201HBW; ≤92HRB; ≤210HV
Malosi (20℃, g/cm³): 7.93
Liu liusuavai (℃): 1398~1454
Maoti le malosi o le vevela (0~100℃, KJ·kg-1K-1): 0.50
Fa'avevela vevela (W·m-1·K-1): (100℃) 16.3, (500℃) 21.5
Fa'atele fa'alautele laina (10-6·K-1): (0~100℃) 17.2, (0~500℃) 18.4
Resistivity (20 ℃, 10-6Ω·m2/m): 0.73
Fa'ato'a fa'a'umi'umi (20℃, KN/mm2): 193
Tulaga oloa
Lipoti
Fa'atonu
Mo le 304 uʻamea uʻamea, o le elemene Ni i lona tuufaatasiga e taua tele, lea e fuafua saʻo ai le faʻafefeteina ma le taua o le 304 stainless steel.
O elemene sili ona taua i le 304 o Ni ma Cr, ae le gata i nei elemene e lua. O manaʻoga faʻapitoa e faʻamaonia e tulaga o oloa. O le faʻamasinoga masani i totonu o pisinisi o le umi lava e sili atu le maualuga o le Ni i le 8% ma le Cr content e sili atu i le 18%, e mafai ona manatu o le 304 stainless steel. O le mafuaʻaga lea ua taʻua ai e le alamanuia lenei ituaiga uʻamea uʻamea 18/8 uʻamea. O le mea moni, o tulaga talafeagai o oloa o loʻo i ai tulafono manino mo le 304, ma o nei tulaga faʻatau oloa ei ai ni eseesega mo uʻamea uʻamea o foliga eseese. O lo'o mulimuli mai nisi o tulaga masani o oloa ma su'ega.
Ina ia iloa pe o se mea e 304 stainless steel, e tatau ona fetaui ma manaoga o elemene taitasi i le tulaga o oloa. Afai lava e le ausia e se tasi manaoga, e le mafai ona taʻua o le 304 stainless steel.
1. ASTM A276 (Fa'amatalaga Fa'asinomaga mo Pa uamea ma Fa'atusa)
304
C
Mn
P
S
Si
Cr
Ni
Manaoga,%
≤0.08
≤2.00
≤0.045
≤0.030
≤1.00
18.0–20.0
8.0-11.0
2. ASTM A240 (Chromium ma Chromium-Nikeli uamea u'amea, Pepa, ma le fa'ailoga mo mea fa'amalosi ma mo Talosaga Lautele)
304
C
Mn
P
S
Si
Cr
Ni
N
Manaoga,%
≤0.07
≤2.00
≤0.045
≤0.030
≤0.75
17.5–19.5
8.0–10.5
≤0.10
3. JIS G4305 (pepa u'amea u'amea ta'ai malulu, laupepa ma fasimea)
SUS 304
C
Mn
P
S
Si
Cr
Ni
Manaoga,%
≤0.08
≤2.00
≤0.045
≤0.030
≤1.00
18.0–20.0
8.0-10.5
4. JIS G4303 (Fa'amau uamea)
SUS 304
C
Mn
P
S
Si
Cr
Ni
Manaoga,%
≤0.08
≤2.00
≤0.045
≤0.030
≤1.00
18.0–20.0
8.0-10.5
O ta'iala e fa o lo'o i luga ua na'o nisi o tulaga masani. O le mea moni, e sili atu nai lo nei tulaga o loʻo taʻua ai le 304 i le ASTM ma le JIS. O le mea moni, o tulaga taʻitasi e iai manaʻoga eseese mo le 304, o lea afai e te manaʻo e fuafua pe o se mea e 304, o le auala saʻo e faʻaalia ai e tatau ona tusa pe fetaui ma le 304 manaʻoga i se tulaga o oloa.
tulaga o oloa:
1. Fa'ailoga igoa
E fa'aogaina e le American Iron and Steel Institute ni numera se tolu e fa'aigoaina ai togi fa'ata'atia eseese o u'amea e mafai ona fa'aogaina. Faatasi ai ma i latou:
① Austenitic uamea uamea ua faailogaina i numera 200 ma 300 faasologa. Mo se faʻataʻitaʻiga, o nisi uʻamea austenitic masani e faʻailogaina i le 201, 304, 316 ma le 310.
② Ferritic ma martensitic uʻamea uamea o loʻo faʻatusalia e 400 numera faasologa.
③ Ua fa'ailoga uamea u'amea ferritic i le 430 ma le 446, ma ua fa'aigoaina le uamea uamea martensitic i le 410, 420 ma le 440C.
④ Duplex (austenitic-ferrite), u'amea u'amea, timu fa'ama'a'aina u'amea u'amea ma u'amea maualuga fa'atasi ai ma le u'amea i lalo ifo o le 50% e masani ona ta'ua i igoa pateni po'o fa'ailoga fa'ailoga.
2. Fa'avasegaina ma le fa'avasegaina
1. Fa'ailoga ma fa'avasegaina: ① National standard GB ② Alamanuia tulaga YB ③ Fa'alotoifale tulaga ④ Atina'e tulaga Q/CB
2. Fa'avasegaina: ① Fa'asologa o oloa ② Fa'apipi'i tulaga ③ Metotia tulaga ④ Fa'avae masani
3. Tulaga masani (vaevaeina i ni vaega se tolu): Laasaga Y: Laasaga fa'ava-o-malo I tulaga maualuga: Laasaga lautele fa'ava-o-malo H Laasaga: Tulaga alualu i luma ile lotoifale
4. Tulaga fa'aleatunuu
GB1220-2007 Pa uamea uamea (I tulaga) GB4241-84 Uila u'amea uamea (H maualuga)
GB4356-2002 Uila u'amea uamea (I tulaga) GB1270-80 Paipa uamea uamea (I tulaga)
GB12771-2000 Uamea u'amea u'amea paipa (Y tulaga) GB3280-2007 u'amea uamea malulu ipu (I tulaga)
GB4237-2007 Uamea uamea uamea ipu vevela (I tulaga) GB4239-91 Uamea malulu fusipa'u (I tulaga)
Taimi meli: Sep-11-2024