304 bakin karfe bututu tare da cikakken bayani dalla-dalla
Hanyoyin alamar gama gari a cikin kasuwa sun haɗa da 06cr19ni10 da SUS304, wanda 06cr19ni10 gabaɗaya yana nufin samar da daidaitattun ƙasa, 304 gabaɗaya yana nufin samar da daidaitattun ASTM, kuma SUS 304 yana nufin samar da daidaitattun Jafananci.
304 shine bakin karfe na duniya, wanda aka yi amfani da shi sosai don yin kayan aiki da sassan da ke buƙatar cikakken aiki mai kyau (lalata juriya da tsari). Domin kiyaye juriyar lalata bakin karfe, dole ne karfe ya ƙunshi fiye da 18% chromium da fiye da 8% nickel. 304 bakin karfe alama ce ta bakin karfe da aka samar bisa ga ka'idojin ASTM na Amurka.
Ƙarfin ƙarfi σ b (MPa) ≥515-1035
Ƙarfin yawan amfanin ƙasa σ 0.2 (MPa)≥205
Tsawaita δ 5 (%)≥40
Rage yanki ψ (%) ≥?
Taurin: ≤ 201hbw; ≤92HRB; Saukewa: 210HV
Girma (20 ℃, g/cm) ³): maki bakwai tara uku
Matsayin narkewa (℃): 1398 ~ 1454
Ƙayyadadden ƙarfin zafi (0 ~ 100 ℃, kJ · kg-1k-1): 0.50
Ƙarfin zafin jiki (w · M-1 · k-1): (100 ℃) 16.3, (500 ℃) 21.5
Ƙididdigar faɗaɗa layin layi (10-6 · k-1): (0 ~ 100 ℃) 17.2, (0 ~ 500 ℃) 18.4
Resistivity (20 ℃, 10-6 Ω · m2 / M): 0.73
Moduli na roba mai tsayi (20 ℃, kn / mm2): 193
Don 304 bakin karfe, nau'in Ni a cikin abun da ke ciki yana da mahimmanci, wanda kai tsaye ke ƙayyade juriya da ƙimar 304 bakin karfe.
Abubuwan da suka fi muhimmanci a cikin 304 sune Ni da Cr, amma ba su iyakance ga waɗannan abubuwa biyu ba. An ƙayyade takamaiman buƙatun a daidaitaccen samfur. Dangane da hukuncin gama gari a cikin masana'antar, ana iya la'akari da bakin karfe 304 muddin abun cikin Ni ya fi 8% kuma abun cikin Cr ya fi 18%. Wannan shine dalilin da ya sa ake kiran irin wannan bakin karfe 18/8 bakin karfe a masana'antar. A gaskiya ma, ƙa'idodin samfurin da suka dace suna da cikakkun tanadi akan 304, kuma waɗannan ka'idodin samfurin suna da wasu bambance-bambance don nau'i daban-daban na bakin karfe. Anan akwai wasu ƙa'idodin samfur na gama gari da gwaje-gwaje.
Don ƙayyade ko abu shine bakin karfe 304, dole ne ya cika buƙatun kowane kashi a cikin daidaitaccen samfur. Muddin mutum bai cika buƙatun ba, ba za a iya kiransa 304 bakin karfe ba.
Dari uku da hudu
C
Mn
P
S
Si
Cr
Ni
Abin bukata,%
≤0.08
≤2.00
≤0.045
≤0.030
≤1.00
18.0-20.0
8.0-11.0
ASTM A240 (chromium da chromium nickel bakin karfe farantin karfe, takardar, da tsiri tsiri don matsa lamba essels da na gama-gari aikace-aikace)
Dari uku da hudu
C
Mn
P
S
Si
Cr
Ni
N
Abin bukata,%
≤0.07
≤2.00
≤0.045
≤0.030
≤0.75
17.5-19.5
8.0-10.5
≤0.10
Farashin 304
C
Mn
P
S
Si
Cr
Ni
Abin bukata,%
≤0.08
≤2.00
≤0.045
≤0.030
≤1.00
18.0-20.0
8.0-10.5
Farashin 304
C
Mn
P
S
Si
Cr
Ni
Abin bukata,%
≤0.08
≤2.00
≤0.045
≤0.030
≤1.00
18.0-20.0
8.0-10.5
Ma'auni huɗun da ke sama kaɗan ne kawai na gama-gari. A zahiri, fiye da waɗannan ƙa'idodi ana ambaton su a cikin ASTM da JIS. A zahiri, kowane ma'auni yana da buƙatu daban-daban don 304, don haka idan kuna son sanin ko kayan shine 304, madaidaicin magana yakamata ya dace da buƙatun 304 a cikin daidaitaccen samfur.
