ʻO 304 ke kila kila he mea maʻamau i waena o nā kila kila, me ka nui o 7.93 g/cm³; ua kapa ʻia ʻo ia he 18/8 stainless steel i loko o ka ʻoihana, ʻo ia hoʻi he ʻoi aku ma mua o 18% chromium a ʻoi aku ma mua o 8% nickel; he kū'ē i nā mahana wela o 800 ℃, he hana hoʻoponopono maikaʻi a me ka paʻakikī kiʻekiʻe, a hoʻohana nuiʻia i nāʻoihanaʻoihana a me nā mea hoʻonani hale a me nā meaʻai a me nāʻoihana olakino. Eia nō naʻe, pono e hoʻomaopopo ʻia ʻoi aku ka paʻakikī o ka papa kuhikuhi maʻiʻo o ka meaʻai 304 stainless steel ma mua o ka 304 stainless steel maʻamau. No ka laʻana: ʻo ka wehewehe honua o 304 stainless steel ʻo ia ka nui o 18% -20% chromium a me 8% -10% nickel, akā ʻo ka meaʻai-304 stainless steel he 18% chromium a me 8% nickel, e ʻae ana i nā loli i loko o kekahi. ka laulā a me ka kaupalena ʻana i ka ʻike o nā metala kaumaha like ʻole. I nā huaʻōlelo ʻē aʻe, ʻaʻole pono ke kila kila 304 i ke kila kila 304 meaʻai.
ʻO nā ʻano māka maʻamau ma ka mākeke ʻo 06Cr19Ni10 a me SUS304, ʻo ia ka 06Cr19Ni10 e hōʻike maʻamau i ka hana maʻamau ʻāina, hōʻike maʻamau ʻo 304 i ka hana maʻamau ASTM, a ʻo SUS304 e hōʻike ana i ka hana maʻamau Iapana.
ʻO 304 he kila kila maʻamau, i hoʻohana nui ʻia i ka hana ʻana i nā mea hana a me nā ʻāpana e koi ai i ka hana piha maikaʻi (ka pale ʻana i ka corrosion a me ka formability). No ka mālama ʻana i ke kūpaʻa ʻana o ka corrosion o ke kila kila, pono e loaʻa i ke kila ma mua o 18% chromium a ʻoi aku ma mua o 8% nickel. ʻO ka 304 stainless steel kahi papa o ke kila kila i hana ʻia e like me ka maʻamau ʻAmelika ASTM.
Nā waiwai kino:
Ka ikaika tensile σb (MPa) ≥ 515-1035
ʻO ka ikaika hoʻohua kūlana σ0.2 (MPa) ≥ 205
Elongation δ5 (%) ≥ 40
Hoʻemi ʻāpana ψ (%)≥?
Paʻakiki: ≤201HBW; ≤92HRB; ≤210HV
Māmā (20 ℃, g/cm³): 7.93
Ka helu hehee (℃): 1398~1454
Hiki ke wela wela (0~100 ℃, KJ·kg-1K-1): 0.50
Ka hoʻoheheʻe wela (W·m-1·K-1): (100 ℃) 16.3, (500 ℃) 21.5
Ka helu hoʻonui laina (10-6·K-1): (0~100℃) 17.2, (0~500℃) 18.4
Kū'ē (20 ℃, 10-6Ω·m2/m): 0.73
Modulus elastic lōʻihi (20 ℃, KN/mm2): 193
haku mele
Hōʻike
Lunahooponopono
No ke kila kila 304, he mea koʻikoʻi ka mea Ni i loko o kāna ʻano, kahi e hoʻoholo pololei ai i ke kūpaʻa corrosion a me ka waiwai o 304 stainless steel.
ʻO nā mea nui loa ma 304 ʻo Ni a me Cr, akā ʻaʻole i kaupalena ʻia i kēia mau mea ʻelua. Hōʻikeʻia nā koi kiko'ī e nā kūlana huahana. ʻO ka hoʻoholo maʻamau i ka ʻoihana ʻoiai ʻoi aku ka nui o ka Ni ma mua o 8% a ʻoi aku ka nui o ka Cr ma mua o 18%, hiki ke noʻonoʻo ʻia he 304 stainless steel. ʻO kēia ke kumu i kapa ai ka ʻoihana i kēia ʻano o ke kila kila 18/8 kila kila. ʻO ka ʻoiaʻiʻo, ʻo nā kūlana huahana e pili ana i nā lula akaka loa no 304, a he mau ʻokoʻa kēia mau huahana huahana no ke kila kila o nā ʻano like ʻole. Ma lalo iho nei kekahi mau huahana maʻamau a me nā hoʻāʻo.
No ka hoʻoholo inā he 304 stainless steel kahi mea, pono ia e hoʻokō i nā koi o kēlā me kēia mea i ka maʻamau huahana. I ka wā e hoʻokō ʻole ai kekahi i nā koi, ʻaʻole hiki ke kapa ʻia ʻo 304 stainless steel.
1. ASTM A276 (Standard Specification for Stainless Steel Bars and Shapes)
304
C
Mn
P
S
Si
Cr
Ni
Pono, %
≤0.08
≤2.00
≤0.045
≤0.030
≤1.00
18.0–20.0
8.0-11.0
2. ASTM A240 (Papa kila kuhili ʻole Chromium a me Chromium-Nickel no nā mea hoʻopaʻa paʻi a no nā noi maʻamau)
304
C
Mn
P
S
Si
Cr
Ni
N
Pono, %
≤0.07
≤2.00
≤0.045
≤0.030
≤0.75
17.5–19.5
8.0–10.5
≤0.10
3. JIS G4305 (paʻa kila kuhili ʻole i ʻōwili ʻia, pepa a me ka ʻili)
SUS 304
C
Mn
P
S
Si
Cr
Ni
Pono, %
≤0.08
≤2.00
≤0.045
≤0.030
≤1.00
18.0–20.0
8.0-10.5
4. JIS G4303 (Nā pahu kila ʻole)
SUS 304
C
Mn
P
S
Si
Cr
Ni
Pono, %
≤0.08
≤2.00
≤0.045
≤0.030
≤1.00
18.0–20.0
8.0-10.5
ʻO nā maʻamau ʻehā ma luna nei kekahi o nā mea maʻamau. ʻOiaʻiʻo, ʻoi aku ka nui o kēia mau maʻamau e haʻi ana i ka 304 ma ASTM a me JIS. ʻO ka ʻoiaʻiʻo, he ʻokoʻa nā koi o kēlā me kēia maʻamau no 304, no laila inā makemake ʻoe e hoʻoholo inā he 304 kahi mea, ʻo ke ala pololei e hōʻike ai ʻo ia ke kūpono i nā koi 304 i kekahi kūlana huahana.
Kūlana huahana:
1. Lepili ʻana
Hoʻohana ka American Iron and Steel Institute i ʻekolu huahelu e lepili i nā māka maʻamau o ke kila kila kila. Ma waena o lākou:
① Ua hoʻopaʻa inoa ʻia ke kila kila Austenitic me nā helu 200 a me 300. No ka laʻana, ua hoʻopaʻa inoa ʻia kekahi mau kila kuhili ʻole austenitic maʻamau me 201, 304, 316 a me 310.
② Hōʻike ʻia nā kila kulika ferritic a me martensitic e nā helu moʻo 400.
③ Hoʻopaʻa inoa ʻia ke kila stainless Ferritic me 430 a me 446, a ua hoʻopaʻa ʻia ke kila kila martensitic me 410, 420 a me 440C.
④ ʻO Duplex (austenitic-ferrite), ke kila kila, ke kila paʻakikī paʻakikī a me nā mea hao kiʻekiʻe me ka mea hao ma lalo o 50% ka inoa maʻamau e nā inoa patent a i ʻole nā mea kūʻai.
2. Ka hoʻokaʻawale ʻana a me ka helu ʻana
1. Ka helu ʻana a me ka hoʻokaʻawale ʻana: ① National standard GB ② Industry standard YB ③ Local standard ④ Enterprise standard Q/CB
2. Hoʻokaʻawale: ① Product standard ② Packaging standard ③ Method standard ④ Basic standard
3. Ka pae maʻamau (māhele ʻia i ʻekolu pae): Pae Y: Pae kiʻekiʻe o ke ao holoʻokoʻa I pae: Papa laulā H pae: Pae kiʻekiʻe o ka hale.
4. Kūlana aupuni
GB1220-2007 Nā kaola kila ʻole (I pae) GB4241-84 Koila wiliwili kila ʻole (ka pae H)
GB4356-2002 Koila wiliwili kila (I pae) GB1270-80 Paipu kila kila (I pae)
GB12771-2000 Paipu wiliwili kila kuhiliʻole (Y pae) GB3280-2007 Paʻa anuu kila kuhiliʻole (I pae)
GB4237-2007 Pa'a wela kila 'ole (I pae) GB4239-91 Ke kā'ei anuanu kila 'ole (I pae)
Ka manawa hoʻouna: Sep-11-2024